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ATT&CK Technique

Defacement

T1491 · impact

Adversaries may modify visual content available internally or externally to an enterprise network, thus affecting the integrity of the original content. Reasons for Defacement include delivering messaging, intimidation, or claiming (possibly false) credit for an intrusion. Disturbing or offensive images may be used as a part of Defacement in order to cause user discomfort, or to pressure compliance with accompanying messages.

WindowsIaaSLinuxmacOSESXi
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Actors Using This

14
iranAgrius
russia_speaking_cybercrimeAkira
russia_speaking_cybercrimeALPHV / BlackCat
north_koreaAndariel
unknown_likely_russia_alignedAnubis Ransomware
iranAPT33
iranAPT35
north_koreaAPT38
brazilBizarro
russia_speaking_cybercrimeBlack Basta
russia_apt_sandwormBlackEnergy
unknown_likely_russia_aligned_eldorado_lineageBlackLock Ransomware
unknown_likely_russia_alignedBrain Cipher
russia_apt_sandwormCaddyWiper
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Likely Attack Path

Techniques the same actors pair with this one distinctively - those showing up among actors who use this technique noticeably more than across all actors (lift > 1.15), grouped by kill-chain phase. The × is that lift multiplier; the shared-actor count is in the tooltip. A near-universal technique pairs with everything at baseline, so its list is short by design.
execution earlier
T1569 · System Services ×2.97T1059.008 · Network Device CLI ×2.93
persistence earlier
T1037.003 · Network Logon Script ×3.90T1136.002 · Domain Account ×3.25
lateral-movement earlier
T1550.003 · Pass the Ticket ×2.93
collection earlier
T1530 · Data from Cloud Storage ×3.18
impact same
T1491.001 · Internal Defacement ×3.90T1491.002 · External Defacement ×3.90T1488 · Disk Content Wipe ×3.90T1489 · Service Stop ×3.52T1531 · Account Access Removal ×3.03T1495 · Firmware Corruption ×3.00T1561.002 · Disk Structure Wipe ×2.93
other same
T1562.009 · Safe Mode Boot ×3.62T1027.007 · Dynamic API Resolution ×2.93
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Mitigations

1
MITRE ATT&CK mitigations - vendor-agnostic guidance for reducing exposure to this technique.
M1053Data Backup

Data Backup involves taking and securely storing backups of data from end-user systems and critical servers. It ensures that data remains available in the event of system compromise, ransomware attacks, or other disruptions. Backup processes should include hardening backup systems, implementing secure storage solutions, and keeping backups isolated from the corporate network to prevent compromise during active incidents.

Regular Backup Scheduling
  • Use Case: Ensure timely and consistent backups of critical data.
  • Implementation: Schedule daily incremental backups and weekly full backups for all critical servers and systems.
Immutable Backups
  • Use Case: Protect backups from modification or deletion, even by attackers.
  • Implementation: Use write-once-read-many (WORM) storage for backups, preventing ransomware from encrypting or deleting backup files.
Backup Encryption
  • Use Case: Protect data integrity and confidentiality during transit and storage.
  • Implementation: Encrypt backups using strong encryption protocols (e.g., AES-256) before storing them in local, cloud, or remote locations.
Offsite Backup Storage
  • Use Case: Ensure data availability during physical disasters or onsite breaches.
  • Implementation: Use cloud-based solutions like AWS S3, Azure Backup, or physical offsite storage to maintain a copy of critical data.
Backup Testing
  • Use Case: Validate backup integrity and ensure recoverability.
  • Implementation: Regularly test data restoration processes to ensure that backups are not corrupted and can be recovered quickly.
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Detection Coverage

0/6 layers
Coverage across standard detection surfaces. Rows marked none have no rule of that type mapped. Some are real blind spots worth closing; others are simply not applicable to this technique (e.g. YARA matches malware files, not network behaviour).
Behavioral / log (Sigma) none
Analytics (MITRE CAR) none
Runtime / container (Falco) none
File / malware (YARA) none
Network (Suricata/Snort) none
Vuln scan (Nuclei) none
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Caldera Emulation

2
MITRE Caldera abilities that emulate this technique - each is an executable action for automated adversary emulation.
impactwindowsInvoke-MemeKatz
.\Invoke-MemeKatz.ps1
impactdarwin, linux, windowsLeave note
echo "proof that this machine was hacked." > message.txt
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Comply & Defend

NIST 800-53AC-03, AC-06, CM-02, CP-02, CP-07, CP-09, CP-10, SI-03, SI-04, SI-07
Intelligence Graph · click any node to traverse
CVETechnique ActorTool Family
drag to reposition · click any node to traverse · button top-right enlarges
External lookups - second-class, for what we don’t hold ourselves
MITRE ATT&CKAtomic Red Teamcar (MITRE)
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