title: Okta FastPass Phishing Detection
id: ee39a9f7-5a79-4b0a-9815-d36b3cf28d3e
status: test
description: Detects when Okta FastPass prevents a known phishing site.
references:
    - https://sec.okta.com/fastpassphishingdetection
    - https://developer.okta.com/docs/reference/api/system-log/
    - https://developer.okta.com/docs/reference/api/event-types/
author: Austin Songer @austinsonger
date: 2023-05-07
modified: 2026-04-27
tags:
    - attack.initial-access
    - attack.t1566
logsource:
    product: okta
    service: okta
detection:
    selection:
        outcome.reason: 'FastPass declined phishing attempt'
        outcome.result: FAILURE
        eventType: user.authentication.auth_via_mfa
    condition: selection
falsepositives:
    - Unlikely
level: high

title: Okta New Admin Console Behaviours
id: a0b38b70-3cb5-484b-a4eb-c4d8e7bcc0a9
status: test
description: Detects when Okta identifies new activity in the Admin Console.
references:
    - https://developer.okta.com/docs/reference/api/system-log/
    - https://sec.okta.com/articles/2023/08/cross-tenant-impersonation-prevention-and-detection
author: kelnage
date: 2023-09-07
modified: 2026-04-27
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.initial-access
    - attack.stealth
    - attack.t1078.004
logsource:
    product: okta
    service: okta
detection:
    selection_event:
        eventType: 'policy.evaluate_sign_on'
        target.displayName: 'Okta Admin Console'
    selection_positive:
        - debugContext.debugData.behaviors|contains: 'POSITIVE'
        - debugContext.debugData.logOnlySecurityData|contains: 'POSITIVE'
    condition: all of selection_*
falsepositives:
    - When an admin begins using the Admin Console and one of Okta's heuristics incorrectly identifies the behavior as being unusual.
level: high

title: Okta Suspicious Activity Reported by End-user
id: 07e97cc6-aed1-43ae-9081-b3470d2367f1
status: test
description: Detects when an Okta end-user reports activity by their account as being potentially suspicious.
references:
    - https://developer.okta.com/docs/reference/api/system-log/
    - https://github.com/okta/workflows-templates/blob/1164f0eb71ce47c9ddc7d850e9ab87b5a2b42333/workflows/suspicious_activity_reported/readme.md
author: kelnage
date: 2023-09-07
modified: 2026-04-27
tags:
    - attack.resource-development
    - attack.t1586.003
logsource:
    product: okta
    service: okta
detection:
    selection:
        eventType: 'user.account.report_suspicious_activity_by_enduser'
    condition: selection
falsepositives:
    - If an end-user incorrectly identifies normal activity as suspicious.
level: high

title: Okta User Session Start Via An Anonymising Proxy Service
id: bde30855-5c53-4c18-ae90-1ff79ebc9578
status: test
description: Detects when an Okta user session starts where the user is behind an anonymising proxy service.
references:
    - https://developer.okta.com/docs/reference/api/system-log/
    - https://sec.okta.com/articles/2023/08/cross-tenant-impersonation-prevention-and-detection
author: kelnage
date: 2023-09-07
modified: 2026-04-27
tags:
    - attack.defense-impairment
    - attack.t1685
logsource:
    product: okta
    service: okta
detection:
    selection:
        eventType: 'user.session.start'
        securityContext.isProxy: 'true'
    condition: selection
falsepositives:
    - If a user requires an anonymising proxy due to valid justifications.
level: high

title: OneNote.EXE Execution of Malicious Embedded Scripts
id: 84b1706c-932a-44c4-ae28-892b28a25b94
status: test
description: |
    Detects the execution of malicious OneNote documents that contain embedded scripts.
    When a user clicks on a OneNote attachment and then on the malicious link inside the ".one" file, it exports and executes the malicious embedded script from specific directories.
references:
    - https://bazaar.abuse.ch/browse/tag/one/
author: '@kostastsale'
date: 2023-02-02
tags:
    - attack.stealth
    - attack.t1218.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\onenote.exe'
        Image|endswith:
            - '\cmd.exe'
            - '\cscript.exe'
            - '\mshta.exe'
            - '\powershell.exe'
            - '\pwsh.exe'
            - '\wscript.exe'
        CommandLine|contains:
            - '\exported\'
            - '\onenoteofflinecache_files\'
    condition: selection
falsepositives:
    - Unlikely
level: high

title: Onyx Sleet APT File Creation Indicators
id: 2fef4fd9-7206-40d1-b4f5-ad6441d0cd9b
status: test
description: Detects file creation activity that is related to Onyx Sleet APT activity
references:
    - https://www.microsoft.com/en-us/security/blog/2023/10/18/multiple-north-korean-threat-actors-exploiting-the-teamcity-cve-2023-42793-vulnerability/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-10-24
tags:
    - attack.execution
    - detection.emerging-threats
logsource:
    category: file_event
    product: windows
detection:
    selection:
        TargetFilename|endswith: ':\Windows\ADFS\bg\inetmgr.exe'
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - FTP Login Attempt
id: 6991bc2b-ae2e-447f-bc55-3a1ba04c14e5
status: test
description: Detects instances where an FTP service on an OpenCanary node has had a login attempt.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.initial-access
    - attack.exfiltration
    - attack.lateral-movement
    - attack.t1190
    - attack.t1021
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 2000
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - GIT Clone Request
id: 4fe17521-aef3-4e6a-9d6b-4a7c8de155a8
status: test
description: Detects instances where a GIT service on an OpenCanary node has had Git Clone request.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.collection
    - attack.t1213
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 16001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - HTTP GET Request
id: af6c3078-84cd-4c68-8842-08b76bd81b13
status: test
description: Detects instances where an HTTP service on an OpenCanary node has received a GET request.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.initial-access
    - attack.t1190
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 3000
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - HTTP POST Login Attempt
id: af1ac430-df6b-4b38-b976-0b52f07a0252
status: test
description: |
    Detects instances where an HTTP service on an OpenCanary node has had login attempt via Form POST.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.initial-access
    - attack.t1190
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 3001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - HTTPPROXY Login Attempt
id: 5498fc09-adc6-4804-b9d9-5cca1f0b8760
status: test
description: |
    Detects instances where an HTTPPROXY service on an OpenCanary node has had an attempt to proxy another page.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.initial-access
    - attack.command-and-control
    - attack.t1090
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 7001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - Host Port Scan (SYN Scan)
id: 974be8d2-283e-4033-ab08-7505b84204d0
status: experimental
description: Detects instances where an OpenCanary node has been targeted by a SYN port scan.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Marco Pedrinazzi (@pedrinazziM)
date: 2026-01-06
tags:
    - attack.discovery
    - attack.t1046
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 5001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - MSSQL Login Attempt Via SQLAuth
id: 3ec9a16d-0b4f-4967-9542-ebf38ceac7dd
status: test
description: |
    Detects instances where an MSSQL service on an OpenCanary node has had a login attempt using SQLAuth.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.credential-access
    - attack.collection
    - attack.t1003
    - attack.t1213
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 9001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - MSSQL Login Attempt Via Windows Authentication
id: 6e78f90f-0043-4a01-ac41-f97681613a66
status: test
description: |
    Detects instances where an MSSQL service on an OpenCanary node has had a login attempt using Windows Authentication.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.credential-access
    - attack.collection
    - attack.t1003
    - attack.t1213
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 9002
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - MySQL Login Attempt
id: e7d79a1b-25ed-4956-bd56-bd344fa8fd06
status: test
description: Detects instances where a MySQL service on an OpenCanary node has had a login attempt.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.credential-access
    - attack.collection
    - attack.t1003
    - attack.t1213
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 8001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - NMAP FIN Scan
id: eae8c0c8-e5da-450a-9d7d-66aa56cd26b6
status: experimental
description: Detects instances where an OpenCanary node has been targeted by a NMAP FIN Scan
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Marco Pedrinazzi (@pedrinazziM)
date: 2026-01-06
tags:
    - attack.discovery
    - attack.t1046
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 5005
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - NMAP NULL Scan
id: 68b8547b-107f-43f3-97fb-900a7d63c190
status: experimental
description: Detects instances where an OpenCanary node has been targeted by a NMAP NULL Scan
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Marco Pedrinazzi (@pedrinazziM)
date: 2026-01-06
tags:
    - attack.discovery
    - attack.t1046
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 5003
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - NMAP OS Scan
id: e8a677fd-248c-4eab-94df-de2f6f645884
status: experimental
description: Detects instances where an OpenCanary node has been targeted by a NMAP OS Scan
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Marco Pedrinazzi (@pedrinazziM)
date: 2026-01-06
tags:
    - attack.discovery
    - attack.t1046
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 5002
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - NMAP XMAS Scan
id: d7553d7b-f485-479c-b192-cdac6edd83a4
status: experimental
description: Detects instances where an OpenCanary node has been targeted by a NMAP XMAS Scan
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Marco Pedrinazzi (@pedrinazziM)
date: 2026-01-06
tags:
    - attack.discovery
    - attack.t1046
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 5004
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - NTP Monlist Request
id: 7cded4b3-f09e-405a-b96f-24248433ba44
status: test
description: Detects instances where an NTP service on an OpenCanary node has had a NTP monlist request.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.impact
    - attack.t1498
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 11001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - RDP New Connection Attempt
id: 598290cf-5932-45cd-9123-be1e05ab4f2e
status: experimental
description: Detects instances where an RDP service on an OpenCanary node has had a connection attempt.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Marco Pedrinazzi (@pedrinazziM)
date: 2026-01-06
tags:
    - attack.initial-access
    - attack.lateral-movement
    - attack.persistence
    - attack.t1133
    - attack.t1021.001
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 14001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - REDIS Action Command Attempt
id: 547dfc53-ebf6-4afe-8d2e-793d9574975d
status: test
description: Detects instances where a REDIS service on an OpenCanary node has had an action command attempted.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.credential-access
    - attack.collection
    - attack.t1003
    - attack.t1213
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 17001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - SIP Request
id: e30de276-68ec-435c-ab99-ef3befec6c61
status: test
description: Detects instances where an SIP service on an OpenCanary node has had a SIP request.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.collection
    - attack.t1123
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 15001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - SMB File Open Request
id: 22777c9e-873a-4b49-855f-6072ab861a52
status: test
description: Detects instances where an SMB service on an OpenCanary node has had a file open request.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.lateral-movement
    - attack.collection
    - attack.t1021
    - attack.t1005
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 5000
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - SNMP OID Request
id: e9856028-fd4e-46e6-b3d1-10f7ceb95078
status: test
description: Detects instances where an SNMP service on an OpenCanary node has had an OID request.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.discovery
    - attack.lateral-movement
    - attack.t1016
    - attack.t1021
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 13001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - SSH Login Attempt
id: ff7139bc-fdb1-4437-92f2-6afefe8884cb
status: test
description: Detects instances where an SSH service on an OpenCanary node has had a login attempt.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.privilege-escalation
    - attack.initial-access
    - attack.lateral-movement
    - attack.persistence
    - attack.stealth
    - attack.t1133
    - attack.t1021
    - attack.t1078
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 4002
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - SSH New Connection Attempt
id: cd55f721-5623-4663-bd9b-5229cab5237d
status: test
description: Detects instances where an SSH service on an OpenCanary node has had a connection attempt.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.privilege-escalation
    - attack.initial-access
    - attack.lateral-movement
    - attack.persistence
    - attack.stealth
    - attack.t1133
    - attack.t1021
    - attack.t1078
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 4000
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - TFTP Request
id: b4e6b016-a2ac-4759-ad85-8000b300d61e
status: test
description: Detects instances where a TFTP service on an OpenCanary node has had a request.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.exfiltration
    - attack.t1041
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 10001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - Telnet Login Attempt
id: 512cff7a-683a-43ad-afe0-dd398e872f36
status: test
description: Detects instances where a Telnet service on an OpenCanary node has had a login attempt.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.initial-access
    - attack.command-and-control
    - attack.stealth
    - attack.t1133
    - attack.t1078
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 6001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenCanary - VNC Connection Attempt
id: 9db5446c-b44a-4291-8b89-fcab5609c3b3
status: test
description: Detects instances where a VNC service on an OpenCanary node has had a connection attempt.
references:
    - https://opencanary.readthedocs.io/en/latest/starting/configuration.html#services-configuration
    - https://github.com/thinkst/opencanary/blob/a0896adfcaf0328cfd5829fe10d2878c7445138e/opencanary/logger.py#L52
author: Security Onion Solutions
date: 2024-03-08
tags:
    - attack.lateral-movement
    - attack.t1021
logsource:
    category: application
    product: opencanary
detection:
    selection:
        logtype: 12001
    condition: selection
falsepositives:
    - Unlikely
level: high

title: OpenWith.exe Executes Specified Binary
id: cec8e918-30f7-4e2d-9bfa-a59cc97ae60f
status: test
description: The OpenWith.exe executes other binary
references:
    - https://github.com/LOLBAS-Project/LOLBAS/blob/4db780e0f0b2e2bb8cb1fa13e09196da9b9f1834/yml/LOLUtilz/OSBinaries/Openwith.yml
    - https://twitter.com/harr0ey/status/991670870384021504
author: Beyu Denis, oscd.community (rule), @harr0ey (idea)
date: 2019-10-12
modified: 2021-11-27
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\OpenWith.exe'
        CommandLine|contains: '/c'
    condition: selection
falsepositives:
    - Unknown
level: high

title: Operation Wocao Activity
id: 1cfac73c-be78-4f9a-9b08-5bde0c3953ab
related:
    - id: 74ad4314-482e-4c3e-b237-3f7ed3b9ca8d
      type: derived
status: test
description: Detects activity mentioned in Operation Wocao report
references:
    - https://www.fox-it.com/en/news/whitepapers/operation-wocao-shining-a-light-on-one-of-chinas-hidden-hacking-groups/
    - https://twitter.com/SBousseaden/status/1207671369963646976
author: Florian Roth (Nextron Systems), frack113
date: 2019-12-20
modified: 2022-10-09
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.discovery
    - attack.stealth
    - attack.t1012
    - attack.t1036.004
    - attack.t1027
    - attack.execution
    - attack.t1053.005
    - attack.t1059.001
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
    definition: The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697
detection:
    selection:
        CommandLine|contains:
            - 'checkadmin.exe 127.0.0.1 -all'
            - 'netsh advfirewall firewall add rule name=powershell dir=in'
            - 'cmd /c powershell.exe -ep bypass -file c:\s.ps1'
            - '/tn win32times /f'
            - 'create win32times binPath='
            - '\c$\windows\system32\devmgr.dll'
            - ' -exec bypass -enc JgAg'
            - 'type *keepass\KeePass.config.xml'
            - 'iie.exe iie.txt'
            - 'reg query HKEY_CURRENT_USER\Software\\*\PuTTY\Sessions\'
    condition: selection
falsepositives:
    - Administrators that use checkadmin.exe tool to enumerate local administrators
level: high

title: Operation Wocao Activity - Security
id: 74ad4314-482e-4c3e-b237-3f7ed3b9ca8d
status: test
description: Detects activity mentioned in Operation Wocao report
references:
    - https://web.archive.org/web/20200226212615/https://www.fox-it.com/en/news/whitepapers/operation-wocao-shining-a-light-on-one-of-chinas-hidden-hacking-groups/
    - https://web.archive.org/web/20200226212615/https://resources.fox-it.com/rs/170-CAK-271/images/201912_Report_Operation_Wocao.pdf
    - https://twitter.com/SBousseaden/status/1207671369963646976
author: Florian Roth (Nextron Systems), frack113
date: 2019-12-20
modified: 2022-11-27
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.discovery
    - attack.stealth
    - attack.t1012
    - attack.t1036.004
    - attack.t1027
    - attack.execution
    - attack.t1053.005
    - attack.t1059.001
    - detection.emerging-threats
logsource:
    product: windows
    service: security
detection:
    selection:
        EventID: 4799
        TargetUserName|startswith: 'Administr'
        CallerProcessName|endswith: '\checkadmin.exe'
    condition: selection
falsepositives:
    - Administrators that use checkadmin.exe tool to enumerate local administrators
level: high

title: Operator Bloopers Cobalt Strike Commands
id: 647c7b9e-d784-4fda-b9a0-45c565a7b729
related:
    - id: 4f154fb6-27d1-4813-a759-78b93e0b9c48
      type: similar
status: test
description: Detects use of Cobalt Strike commands accidentally entered in the CMD shell
references:
    - https://hstechdocs.helpsystems.com/manuals/cobaltstrike/current/userguide/content/cobalt-4-5-user-guide.pdf
    - https://thedfirreport.com/2021/10/04/bazarloader-and-the-conti-leaks/
    - https://thedfirreport.com/2022/06/16/sans-ransomware-summit-2022-can-you-detect-this/
author: _pete_0, TheDFIRReport
date: 2022-05-06
modified: 2023-01-30
tags:
    - attack.execution
    - attack.t1059.003
    - stp.1u
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - OriginalFileName: 'Cmd.Exe'
        - Image|endswith: '\cmd.exe'
    selection_cli:
        CommandLine|startswith:
            - 'cmd '
            - 'cmd.exe'
            - 'c:\windows\system32\cmd.exe'
        CommandLine|contains:
            - 'psinject'
            - 'spawnas'
            - 'make_token'
            - 'remote-exec'
            - 'rev2self'
            - 'dcsync'
            - 'logonpasswords'
            - 'execute-assembly'
            - 'getsystem'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high

title: Operator Bloopers Cobalt Strike Modules
id: 4f154fb6-27d1-4813-a759-78b93e0b9c48
related:
    - id: 647c7b9e-d784-4fda-b9a0-45c565a7b729
      type: similar
status: test
description: Detects Cobalt Strike module/commands accidentally entered in CMD shell
references:
    - https://hstechdocs.helpsystems.com/manuals/cobaltstrike/current/userguide/content/cobalt-4-5-user-guide.pdf
    - https://thedfirreport.com/2021/10/04/bazarloader-and-the-conti-leaks/
    - https://thedfirreport.com/2022/06/16/sans-ransomware-summit-2022-can-you-detect-this/
author: _pete_0, TheDFIRReport
date: 2022-05-06
modified: 2023-01-30
tags:
    - attack.execution
    - attack.t1059.003
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - OriginalFileName: 'Cmd.Exe'
        - Image|endswith: '\cmd.exe'
    selection_cli:
        CommandLine|contains:
            - 'Invoke-UserHunter'
            - 'Invoke-ShareFinder'
            - 'Invoke-Kerberoast'
            - 'Invoke-SMBAutoBrute'
            - 'Invoke-Nightmare'
            - 'zerologon'
            - 'av_query'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high

title: Oracle WebLogic Exploit CVE-2020-14882
id: 85d466b0-d74c-4514-84d3-2bdd3327588b
status: test
description: Detects exploitation attempts on WebLogic servers
references:
    - https://isc.sans.edu/diary/26734
    - https://twitter.com/jas502n/status/1321416053050667009?s=20
    - https://twitter.com/sudo_sudoka/status/1323951871078223874
author: Florian Roth (Nextron Systems)
date: 2020-11-02
modified: 2023-01-02
tags:
    - attack.t1190
    - attack.initial-access
    - cve.2020-14882
    - detection.emerging-threats
logsource:
    category: webserver
detection:
    selection:
        cs-uri-query|contains:
            - '/console/images/%252E%252E%252Fconsole.portal'
            - '/console/css/%2e'
    condition: selection
falsepositives:
    - Unknown
level: high

title: Outbound Network Connection Initiated By Cmstp.EXE
id: efafe0bf-4238-479e-af8f-797bd3490d2d
status: test
description: |
    Detects a network connection initiated by Cmstp.EXE
    Its uncommon for "cmstp.exe" to initiate an outbound network connection. Investigate the source of such requests to determine if they are malicious.
references:
    - https://web.archive.org/web/20190720093911/http://www.endurant.io/cmstp/detecting-cmstp-enabled-code-execution-and-uac-bypass-with-sysmon/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-08-30
modified: 2024-05-31
tags:
    - attack.stealth
    - attack.t1218.003
logsource:
    category: network_connection
    product: windows
detection:
    selection:
        Image|endswith: '\cmstp.exe'
        Initiated: 'true'
    filter_main_local_ranges:
        DestinationIp|cidr:
            - '127.0.0.0/8'
            - '10.0.0.0/8'
            - '172.16.0.0/12'
            - '192.168.0.0/16'
            - '169.254.0.0/16'
            - '::1/128'  # IPv6 loopback
            - 'fe80::/10'  # IPv6 link-local addresses
            - 'fc00::/7'  # IPv6 private addresses
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unknown
# Note: Please report any false positive seen in the wild to help tune the rule.
level: high

title: Outbound Network Connection Initiated By Microsoft Dialer
id: 37e4024a-6c80-4d8f-b95d-2e7e94f3a8d1
status: test
description: |
    Detects outbound network connection initiated by Microsoft Dialer.
    The Microsoft Dialer, also known as Phone Dialer, is a built-in utility application included in various versions of the Microsoft Windows operating system. Its primary function is to provide users with a graphical interface for managing phone calls via a modem or a phone line connected to the computer.
    This is an outdated process in the current conext of it's usage and is a common target for info stealers for process injection, and is used to make C2 connections, common example is "Rhadamanthys"
references:
    - https://tria.ge/240301-rk34sagf5x/behavioral2
    - https://app.any.run/tasks/6720b85b-9c53-4a12-b1dc-73052a78477d
    - https://research.checkpoint.com/2023/rhadamanthys-v0-5-0-a-deep-dive-into-the-stealers-components/
    - https://strontic.github.io/xcyclopedia/library/dialer.exe-0B69655F912619756C704A0BF716B61F.html
author: CertainlyP
date: 2024-04-26
tags:
    - attack.execution
    - attack.command-and-control
    - attack.t1071.001
logsource:
    category: network_connection
    product: windows
detection:
    selection:
        Image|endswith: ':\Windows\System32\dialer.exe'
        Initiated: 'true'
    filter_main_local_ranges:
        DestinationIp|cidr:
            - '127.0.0.0/8'
            - '10.0.0.0/8'
            - '172.16.0.0/12'
            - '192.168.0.0/16'
            - '169.254.0.0/16'
            - '::1/128'  # IPv6 loopback
            - 'fe80::/10'  # IPv6 link-local addresses
            - 'fc00::/7'  # IPv6 private addresses
    condition: selection and not 1 of filter_main_*
falsepositives:
    - In Modern Windows systems, unable to see legitimate usage of this process, However, if an organization has legitimate purpose for this there can be false positives.
level: high

title: Outbound Network Connection Initiated By Script Interpreter
id: 992a6cae-db6a-43c8-9cec-76d7195c96fc
related:
    - id: 08249dc0-a28d-4555-8ba5-9255a198e08c
      type: derived
status: test
description: Detects a script interpreter wscript/cscript opening a network connection to a non-local network. Adversaries may use script to download malicious payloads.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/28d190330fe44de6ff4767fc400cc10fa7cd6540/atomics/T1105/T1105.md
author: frack113, Florian Roth (Nextron Systems)
date: 2022-08-28
modified: 2024-03-13
tags:
    - attack.command-and-control
    - attack.t1105
logsource:
    category: network_connection
    product: windows
detection:
    selection:
        Initiated: 'true'
        Image|endswith:
            - '\wscript.exe'
            - '\cscript.exe'
    filter_main_local_ranges:
        DestinationIp|cidr:
            - '127.0.0.0/8'
            - '10.0.0.0/8'
            - '172.16.0.0/12'
            - '192.168.0.0/16'
            - '169.254.0.0/16'
            - '::1/128'  # IPv6 loopback
            - 'fe80::/10'  # IPv6 link-local addresses
            - 'fc00::/7'  # IPv6 private addresses
    filter_main_ms_ranges:
        DestinationIp|cidr: '20.0.0.0/11' # Microsoft range, caused some FPs
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Legitimate scripts
level: high

title: Outdated Dependency Or Vulnerability Alert Disabled
id: 34e1c7d4-0cd5-419d-9f1b-1dad3f61018d
status: test
description: |
    Dependabot performs a scan to detect insecure dependencies, and sends Dependabot alerts.
    This rule detects when an organization owner disables Dependabot alerts private repositories or Dependabot security updates for all repositories.
author: Muhammad Faisal (@faisalusuf)
date: 2023-01-27
references:
    - https://docs.github.com/en/code-security/dependabot/dependabot-alerts/about-dependabot-alerts
    - https://docs.github.com/en/organizations/keeping-your-organization-secure/managing-security-settings-for-your-organization/managing-security-and-analysis-settings-for-your-organization
tags:
    - attack.initial-access
    - attack.t1195.001
logsource:
    product: github
    service: audit
    definition: 'Requirements: The audit log streaming feature must be enabled to be able to receive such logs. You can enable following the documentation here: https://docs.github.com/en/enterprise-cloud@latest/admin/monitoring-activity-in-your-enterprise/reviewing-audit-logs-for-your-enterprise/streaming-the-audit-log-for-your-enterprise#setting-up-audit-log-streaming'
detection:
    selection:
        action:
            - 'dependabot_alerts_new_repos.disable'
            - 'dependabot_alerts.disable'
            - 'dependabot_security_updates_new_repos.disable'
            - 'dependabot_security_updates.disable'
            - 'repository_vulnerability_alerts.disable'
    condition: selection
falsepositives:
    - Approved changes by the Organization owner. Please validate the 'actor' if authorized to make the changes.
level: high

title: Outlook EnableUnsafeClientMailRules Setting Enabled
id: 55f0a3a1-846e-40eb-8273-677371b8d912
related:
    - id: 6763c6c8-bd01-4687-bc8d-4fa52cf8ba08 # Registry variation
      type: similar
status: test
description: Detects an attacker trying to enable the outlook security setting "EnableUnsafeClientMailRules" which allows outlook to run applications or execute macros
references:
    - https://www.fireeye.com/blog/threat-research/2018/12/overruled-containing-a-potentially-destructive-adversary.html
    - https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=44
    - https://support.microsoft.com/en-us/topic/how-to-control-the-rule-actions-to-start-an-application-or-run-a-macro-in-outlook-2016-and-outlook-2013-e4964b72-173c-959d-5d7b-ead562979048
author: Markus Neis, Nasreddine Bencherchali (Nextron Systems)
date: 2018-12-27
modified: 2023-02-09
tags:
    - attack.execution
    - attack.stealth
    - attack.t1059
    - attack.t1202
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains: '\Outlook\Security\EnableUnsafeClientMailRules'
    condition: selection
falsepositives:
    - Unknown
level: high

title: Outlook EnableUnsafeClientMailRules Setting Enabled - Registry
id: 6763c6c8-bd01-4687-bc8d-4fa52cf8ba08
related:
    - id: c3cefdf4-6703-4e1c-bad8-bf422fc5015a
      type: similar
    - id: 55f0a3a1-846e-40eb-8273-677371b8d912 # ProcCreation variation
      type: similar
status: test
description: Detects an attacker trying to enable the outlook security setting "EnableUnsafeClientMailRules" which allows outlook to run applications or execute macros
references:
    - https://support.microsoft.com/en-us/topic/how-to-control-the-rule-actions-to-start-an-application-or-run-a-macro-in-outlook-2016-and-outlook-2013-e4964b72-173c-959d-5d7b-ead562979048
    - https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=44
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-02-08
modified: 2023-08-17
tags:
    - attack.persistence
    - attack.defense-impairment
    - attack.t1112
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|endswith: '\Outlook\Security\EnableUnsafeClientMailRules'
        Details: 'DWORD (0x00000001)'
    condition: selection
falsepositives:
    - Unknown
level: high

title: Outlook Macro Execution Without Warning Setting Enabled
id: e3b50fa5-3c3f-444e-937b-0a99d33731cd
status: test
description: Detects the modification of Outlook security setting to allow unprompted execution of macros.
references:
    - https://www.mdsec.co.uk/2020/11/a-fresh-outlook-on-mail-based-persistence/
    - https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=53
author: '@ScoubiMtl'
date: 2021-04-05
modified: 2023-08-17
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.command-and-control
    - attack.t1137
    - attack.t1008
    - attack.t1546
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|endswith: '\Outlook\Security\Level'
        Details|contains: '0x00000001' # Enable all Macros
    condition: selection
falsepositives:
    - Unlikely
level: high

title: PCRE.NET Package Image Load
id: 84b0a8f3-680b-4096-a45b-e9a89221727c
status: test
description: Detects processes loading modules related to PCRE.NET package
references:
    - https://twitter.com/rbmaslen/status/1321859647091970051
    - https://twitter.com/tifkin_/status/1321916444557365248
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
date: 2020-10-29
modified: 2022-10-09
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: image_load
    product: windows
detection:
    selection:
        ImageLoaded|contains: \AppData\Local\Temp\ba9ea7344a4a5f591d6e5dc32a13494b\
    condition: selection
falsepositives:
    - Unknown
level: high

title: PCRE.NET Package Temp Files
id: 6e90ae7a-7cd3-473f-a035-4ebb72d961da
status: test
description: Detects processes creating temp files related to PCRE.NET package
references:
    - https://twitter.com/rbmaslen/status/1321859647091970051
    - https://twitter.com/tifkin_/status/1321916444557365248
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
date: 2020-10-29
modified: 2022-10-09
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: file_event
    product: windows
detection:
    selection:
        TargetFilename|contains: \AppData\Local\Temp\ba9ea7344a4a5f591d6e5dc32a13494b\
    condition: selection
falsepositives:
    - Unknown
level: high

title: PDF File Created By RegEdit.EXE
id: 145095eb-e273-443b-83d0-f9b519b7867b
status: test
description: |
    Detects the creation of a file with the ".pdf" extension by the "RegEdit.exe" process.
    This indicates that a user is trying to print/save a registry key as a PDF in order to potentially extract sensitive information and bypass defenses.
references:
    - https://sensepost.com/blog/2024/dumping-lsa-secrets-a-story-about-task-decorrelation/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2024-07-08
tags:
    - attack.stealth
logsource:
    category: file_event
    product: windows
detection:
    selection:
        Image|endswith: '\regedit.exe'
        TargetFilename|endswith: '.pdf'
    condition: selection
falsepositives:
    - Unlikely
level: high

title: PIM Alert Setting Changes To Disabled
id: aeaef14c-e5bf-4690-a9c8-835caad458bd
status: test
description: Detects when PIM alerts are set to disabled.
references:
    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-identity-management#azure-ad-roles-assignment
author: Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'
date: 2022-08-09
tags:
    - attack.initial-access
    - attack.persistence
    - attack.privilege-escalation
    - attack.stealth
    - attack.t1078
logsource:
    product: azure
    service: auditlogs
detection:
    selection:
        properties.message: Disable PIM Alert
    condition: selection
falsepositives:
    - Administrator disabling PIM alerts as an active choice.
level: high

title: PIM Approvals And Deny Elevation
id: 039a7469-0296-4450-84c0-f6966b16dc6d
status: test
description: Detects when a PIM elevation is approved or denied. Outside of normal operations should be investigated.
references:
    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-identity-management#azure-ad-roles-assignment
author: Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'
date: 2022-08-09
tags:
    - attack.persistence
    - attack.initial-access
    - attack.privilege-escalation
    - attack.stealth
    - attack.t1078.004
logsource:
    product: azure
    service: auditlogs
detection:
    selection:
        properties.message: Request Approved/Denied
    condition: selection
falsepositives:
    - Actual admin using PIM.
level: high

title: PPL Tampering Via WerFaultSecure
id: 1f0b4cac-9c81-41f4-95d0-8475ff46b3e2
related:
    - id: 387df17d-3b04-448f-8669-9e7fd5e5fd8c
      type: similar
    - id: 8a2f4b1c-3d5e-4f7a-9b2c-1e4f6d8a9c2b
      type: similar
status: experimental
description: |
    Detects potential abuse of WerFaultSecure.exe to dump Protected Process Light (PPL) processes like LSASS or to freeze security solutions (EDR/antivirus).
    This technique is used by tools such as EDR-Freeze and WSASS to bypass PPL protections and access sensitive information or disable security software.
    Distinct command line patterns help identify the specific tool:
    - WSASS usage typically shows: "WSASS.exe WerFaultSecure.exe [PID]" in ParentCommandLine
    - EDR-Freeze usage typically shows: "EDR-Freeze_[version].exe [PID] [timeout]" in ParentCommandLine
    Legitimate debugging operations using WerFaultSecure are rare in production environments and should be investigated.
references:
    - https://www.zerosalarium.com/2025/09/EDR-Freeze-Puts-EDRs-Antivirus-Into-Coma.html
    - https://github.com/TwoSevenOneT/EDR-Freeze/blob/a7f61030b36fbde89871f393488f7075d2aa89f6/EDR-Freeze.cpp#L53
    - https://www.zerosalarium.com/2025/09/Dumping-LSASS-With-WER-On-Modern-Windows-11.html
    - https://github.com/TwoSevenOneT/WSASS/blob/2c8fd9fa32143e7bc9f066e9511c6f8a57bc64b5/WSASS.cpp#L251
author: Jason (https://github.com/0xbcf)
date: 2025-09-23
modified: 2025-11-23
tags:
    - attack.defense-impairment
    - attack.t1685
    - attack.credential-access
    - attack.t1003.001
logsource:
    category: process_creation
    product: windows
detection:
    selection_image:
        - Image|endswith: '\WerFaultSecure.exe'
        - OriginalFileName: 'WerFaultSecure.exe'
    selection_args:
        CommandLine|contains|all:
            - ' /h '
            - ' /pid ' # Antimalware or EDR process pid will be after this flag
            - ' /tid '
            - ' /encfile '
            - ' /cancel '
            - ' /type '
            - ' 268310'
    condition: all of selection_*
falsepositives:
    - Legitimate usage of WerFaultSecure for debugging purposes
level: high
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_werfaultsecure_abuse/info.yml

title: PSAsyncShell - Asynchronous TCP Reverse Shell
id: afd3df04-948d-46f6-ae44-25966c44b97f
status: test
description: Detects the use of PSAsyncShell an Asynchronous TCP Reverse Shell written in powershell
references:
    - https://github.com/JoelGMSec/PSAsyncShell
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-10-04
tags:
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection:
        ScriptBlockText|contains: 'PSAsyncShell'
    condition: selection
falsepositives:
    - Unlikely
level: high