
Patchwork
Also known as:Hangover Group · Dropping Elephant · Chinastrats · MONSOON · Operation Hangover
Overview
Patchwork is a cyber espionage group that was first observed in December 2015. While the group has not been definitively attributed, circumstantial evidence suggests the group may be a pro-Indian or Indian entity. Patchwork has been seen targeting industries related to diplomatic and government agencies. Much of the code used by this group was copied and pasted from online forums. Patchwork was also seen operating spearphishing campaigns targeting U.S. think tank groups in March and April of 2018.
Naming & attribution
Patchwork is tracked under 6 names across the industry. It uses 41 documented ATT&CK techniques — more than 76% of the 174 groups tracked here.
| Name | First reported by |
|---|---|
| Hangover Group | Levene, B. et al. |
| Dropping Elephant | Hamada, J. |
| Chinastrats | Kaspersky Lab's Global Research & Analysis Team |
| MONSOON | Settle, A., et al |
| Operation Hangover | Settle, A., et al |
| Patchwork | Cymmetria |
Distinctive techniques
Techniques this group uses that are rare across the other 173 tracked groups — these carry more signal than the near-universal ones.
T1587.002Code Signing Certificates — used by 3 of 174 groups
Closest groups by technique overlap
Computed from shared ATT&CK techniques. Overlap is not attribution — distinct actors converge on the same tradecraft — but a high share is a useful pivot.
- Sidewinder India — 20 shared techniques (39% overlap)
- BRONZE BUTLER China — 20 shared techniques (33% overlap)
- Cobalt Group — 18 shared techniques (32% overlap)
- APT3 China — 19 shared techniques (29% overlap)
- MuddyWater Iran — 24 shared techniques (28% overlap)
- Silence — 15 shared techniques (28% overlap)
Targets
Diplomacy · Finance · Government · Military · Private sector · Security Service
Regions
Bangladesh · Germany · Pakistan · Sri Lanka
Capabilities
- Exploitation of public-facing / client applications — ATT&CK T1203
- Custom malware/implant development — ATT&CK: 6 attributed custom malware families
TTPs — 41 techniques across 13 tactics
Reconnaissance
T1598.003Spearphishing Link
Resource Development
T1587.002Code Signing CertificatesT1588.002Tool
Initial Access
T1189Drive-by CompromiseT1566.001Spearphishing AttachmentT1566.002Spearphishing Link
Execution
T1053.005Scheduled TaskT1059.001PowerShellT1059.003Windows Command ShellT1059.005Visual BasicT1203Exploitation for Client ExecutionT1204.001Malicious LinkT1204.002Malicious FileT1559.002Dynamic Data Exchange
Persistence
T1547.001Registry Run Keys / Startup Folder
Privilege Escalation
T1548.002Bypass User Account Control
Stealth
T1027.001Binary PaddingT1027.002Software PackingT1027.005Indicator Removal from ToolsT1027.010Command ObfuscationT1036.005Match Legitimate Resource Name or LocationT1055.012Process HollowingT1070.004File DeletionT1197BITS JobsT1574.001DLL
Defense Impairment
T1112Modify RegistryT1553.002Code Signing
Credential Access
T1555.003Credentials from Web Browsers
Discovery
Lateral Movement
T1021.001Remote Desktop Protocol
Collection
T1005Data from Local SystemT1074.001Local Data StagingT1119Automated CollectionT1560Archive Collected Data
Command and Control
T1102.001Dead Drop ResolverT1105Ingress Tool TransferT1132.001Standard Encoding
Tools & malware (8)
NDiskMonitor · QuasarRAT · BackConfig · TINYTYPHON · AutoIt backdoor · PowerSploit · BADNEWS · Unknown Logger
Reporting (3)
- Updated BackConfig Malware Targeting Government and Military Organizations in South Asia — Hinchliffe, A. and Falcone, R
- Patchwork APT Group Targets US Think Tanks — Meltzer, M, et al
- Patchwork Continues to Deliver BADNEWS to the Indian Subcontinent — Levene, B. et al.