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Threat Actor

Patchwork

patchwork · india · active since 2009

Patchwork (Dropping Elephant / Chinastrats / Quilted Tiger / Monsoon / APT-C-09 / G0040) is an India-aligned cyber-espionage cluster active since at least 2009 and widely assessed as contractor-or-private-sector-aligned with Indian state intelligence requirements, responsible for sustained spear-phishing operations against Chinese government, military, and foreign-affairs targets, US-and Europe-based think tanks researching Chinese policy, and South Asian and Tibetan-diaspora dissident communities, defined by its signature BADNEWS and NDiskMonitor implants, its eclectic open-source-heavy toolkit, and the "patchwork" copy-paste construction style that gave the cluster its name.

india confidence: high 25 aliases MITRE ATT&CK G0040 ↗

Profile

Patchwork (also tracked as Dropping Elephant, Chinastrats, Quilted Tiger, Viceroy Tiger, Monsoon, APT-C-09, TG-4410, and MITRE ATT&CK G0040) is an India-aligned cyber-espionage cluster active since at least 2009 (some assessments) or publicly visible from 2013 onward. The cluster was named "Patchwork" by Cymmetria's seminal July 2016 disclosure on the basis of its tooling, built largely by copy-pasting public exploit and offensive-tradecraft code from online sources, and assessed by Cymmetria as the work of an Indian commercial entity executing targeted-intelligence contracts. Subsequent vendor reporting has consistently maintained the India-aligned framing, often describing the cluster as contractor-or-private-sector-aligned with Indian intelligence requirements rather than directly-run government tasking. No formal government attribution has been issued. The cluster is operationally distinct from the earlier "Operation Hangover" cluster disclosed by Norman ASA in March 2013, though the two are widely treated as sharing partial code and operational lineage. Modern reporting consistently treats Operation Hangover and Patchwork as adjacent-but-separate. Targeting focus is overwhelmingly directed at Chinese government, military, foreign-affairs, and strategic-economic-policy entities, plus diplomatic and dissident-community collection across South Asia (Pakistan, Bangladesh, Sri Lanka, Nepal, Bhutan, Myanmar, Mongolia, Tibet, Hong Kong, Taiwan) and the Tibetan, Uyghur, and Falun Gong diaspora communities in the West. From 2018 onward US-based think tanks researching Chinese strategic and economic policy have repeatedly appeared in Patchwork victim lists (Volexity, June 2018). Operationally Patchwork is distinguished from peer clusters by the eclecticism and patchwork (hence the name) construction of its toolkit. The cluster's central bespoke implants are BADNEWS (a Windows backdoor with C2 over RSS, GitHub, and other novel channels, first analyzed by Forcepoint and Cymmetria 2016) and NDiskMonitor (a simpler USB-collection-and-exfiltration tool). Beyond these, the cluster makes extensive use of open-source tooling (QuasarRAT, PowerSploit, Unknown Logger, AutoIt-based loaders) and has progressively integrated newer open-source frameworks (JsOutProx). Initial access is overwhelmingly via spear-phishing with weaponized Office documents, RTF and PPT lures exploiting long-lived Office vulnerabilities (CVE-2014-4114 / Sandworm, CVE-2012-0158, CVE-2015-1641, CVE-2017-0199, CVE-2017-8570, CVE-2017-11882, CVE-2018-0802). The cluster does not operate at the technical sophistication tier of the major nation-state clusters.

its strength is operational tempo, regional collection focus, and durable longstanding access into Chinese- government-adjacent research and diplomatic environments. A handful of operational notes: First, the name overlap between "Operation Hangover" (Norman ASA 2013) and the "Hangover Group" alias of Patchwork has caused persistent confusion in reporting. Treat them as adjacent clusters unless reporting explicitly identifies cross-cluster overlap. Second, "Chinastrats" appears in some reporting as an alias for Patchwork and in other reporting as a specific Patchwork campaign cluster, Operation Chinastrats. Both usages are common.

in this record Chinastrats is treated as an alias. Third, attribution to India specifically, though dominant in vendor reporting, has not been confirmed by formal state attribution. The "Indian commercial contractor" framing from Cymmetria's 2016 report is widely accepted but not formally established.

Aliases

25
patchworkpatchwork aptpatchwork_aptdropping elephantdropping_elephantchinastratschina stratsmahabusinessquilted tigerquilted_tigerviceroy tigerviceroy_tigerapt-c-09apt_c_09aptc09apt-c-09_patchworkoperation hangover overlapmonsoonoperation monsoontg-4410tg_4410atk 11g0040hangoverthe hangover group

MITRE ATT&CK aliases

2
Additional names MITRE lists for G0040.
Hangover GroupOperation Hangover

Notable Campaigns

8
2024-2025Continued Operations and Toolkit Iteration (2024-2025)
2022-2024Pakistan and UAE Diplomatic and Energy Targeting (2022-2024)
2020-2022JsOutProx Integration and Continued Operations (2020-2022)
2018-2020Operation Chinastrats, Sustained China-Focused Operations (2018-2020)
2016Cymmetria: Unveiling Patchwork (July 2016)
2016Forcepoint Operation Monsoon Disclosure (August 2016)
2016Kaspersky Dropping Elephant Naming (July 2016)
2013Operation Hangover Overlap (Norman ASA, March 2013)

Attribution & Reporting

Attributed by
CymmetriaKaspersky GReATForcepoint (Raytheon Forcepoint Security Labs)SymantecCisco TalosVolexityTrend MicroSecureworksMicrosoftSentinelOneCyfirmaCluster25ESETPT Expert Security CenterQiAnXin RedDrip360 Threat Intelligence CenterRecorded Future Insikt GroupCybleCrowdStrikeMandiant
Key reporting
reportNorman ASA: Operation Hangover (March 2013), adjacent cluster, partial Patchwork lineage
reportCymmetria: Unveiling Patchwork (July 2016), seminal cluster naming
reportKaspersky GReAT: The Dropping Elephant, Aggressive Cyber-Espionage in the Asian Region (July 2016)
reportForcepoint Security Labs: MONSOON, Analysis of an APT Campaign (August 2016)
reportSymantec: Patchwork Cyberespionage Group Expands Targets from Governments to Wide Range of Industries (August 2016)
reportTrend Micro: Untangling the Patchwork Cyberespionage Group (August 2017)
reportCisco Talos: Patchwork Continues to Deliver BADNEWS (March 2018)
reportVolexity: Patchwork APT Group Targets US Think Tanks (June 2018)
reportESET: Spearphishing Campaign MAHA-Business and Indian Origin (May 2017)
reportCyfirma: Patchwork APT Strikes Back (multiple years)
reportCluster25: Patchwork APT, India Cluster Tracking
reportRecorded Future Insikt Group: Patchwork APT Tracking
reportSentinelOne Labs: Patchwork Targets Pakistan
reportPT Expert Security Center: Patchwork APT Analysis
reportVirus Bulletin 2018: M1 Fox Hunter, Chasing Patchwork APT
reportMalpedia Actor Profile: Patchwork
reportMITRE ATT&CK Group G0040, Patchwork

Operational

State sponsor

Suspected India-aligned advanced persistent threat group, widely assessed by vendor research to operate in alignment with Indian state interests, often described as a private-sector or contractor operation supporting Indian intelligence requirements rather than a directly-run government cyber unit. Cymmetria's 2016 "Unveiling Patchwork" report, the seminal public profile, characterized the cluster as likely the work of an Indian commercial entity executing targeted-intelligence contracts. Subsequent vendor reporting (Kaspersky, Forcepoint, Symantec, Volexity, Trend Micro, Cisco Talos, Cyfirma, Cluster25) has consistently maintained the India-aligned framing based on victimology and language artifacts. No formal government attribution has been issued by any state. The cluster is widely treated as adjacent to, but operationally distinct from, the earlier "Operation Hangover" cluster (Norman ASA, 2013)

the two share Indian-aligned framing and partial code lineage but are tracked separately in most modern reporting.

Motivations
espionage, intelligence_gathering, diplomatic_collection, dissident_surveillance, geopolitical_collection, economic_intelligence
Sectors
Regions

Detection Blind Spots

60 techniques
Across this actor’s 60 mapped techniques, the share covered by each detection layer. Low bars are where you’d be blind if this actor targeted you.
Behavioral / log (Sigma)55/60 · 91%
Analytics (MITRE CAR)25/60 · 41%
Runtime / container (Falco)6/60 · 10%
File / malware (YARA)0/60 · 0%
Network (Suricata/Snort)16/60 · 26%
Vuln scan (Nuclei)0/60 · 0%

Atomic Test Plan

30 techniques
Runnable Atomic Red Team tests covering this actor’s mapped techniques - validate your detections against this specific adversary. Cross-reference the blind spots above. For authorized lab / purple-team use. Open the full builder

Tools Used

1 mapped
Other tooling / TTPs (curation, not ATT&CK-mapped):
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