ThreatNexus
Nation-state APT intelligence
Dossiers Open app
IndiaSuspectedIndia-linkedEspionageActive 2015 – 2025

Patchwork

Also known asDropping Elephant · Quilted Tiger · Hangover Group · Chinastrats · Operation Hangover

Summary

Cyberespionage group first observed in December 2015 (MITRE G0040) that MITRE says may be a pro-Indian or Indian entity, targeting diplomatic and government organisations; Arctic Wolf likewise describes it as suspected to be of Indian origin. It relies on spearphishing with malicious documents and links, exploiting Office vulnerabilities such as CVE-2017-0199 and CVE-2017-11882, and on tooling largely copied from online forums alongside custom malware such as BADNEWS. In March–April 2018 Volexity saw it spearphish US think tanks with lures mimicking CFR, CSIS and MERICS and per-recipient tracking links. ESET attributed with high confidence twelve trojanised Android messaging apps carrying the VajraSpy RAT (six on Google Play, April 2021–March 2023), mostly aimed at users in Pakistan. In July 2025 Arctic Wolf reported a Dropping Elephant campaign against Turkish defense contractors, including a precision-guided missile manufacturer, using conference-themed LNK lures and VLC DLL side-loading.

Attribution

SuspectedSuspected link: India-linked

Not definitively attributed

Hedged, circumstantial or press-only reporting; not established.

Sources
  • MITRE ATT&CK (MITRE ATT&CK, 2026-10)
    Circumstantial evidence: may be pro-Indian or Indian
  • Volexity (Research, 2018-06-07)
    Describes an Indian APT group

Campaigns 3

CampaignPeriodTargetsSectorsSource
Turkish defense industry — conference-lure LNK and VLC side-loading2025-06 – 2025-07TurkeyDefenseArctic Wolf (2025-07-23)
VajraSpy trojanised Android messaging apps2021-04 – 2023-09PakistanIndividualsESET (2024-02-01)
US think-tank spearphishing (QuasarRAT)2018-03 – 2018-04USAThink TanksVolexity (2018-06-07)

Newest first. ASSESSED: tied to the actor with hedging or through an alias. CLAIMED: an allegation no independent source confirms.

MITRE ATT&CK techniques 12

Reconnaissance1T1598.003Spearphishing Link
Initial Access2T1566.001Spearphishing AttachmentT1566.002Spearphishing Link
Execution2T1203Exploitation for Client ExecutionT1053.005Scheduled Task
Stealth2T1574.001DLLT1197BITS Jobs
Defense Impairment1T1553.002Code Signing
Credential Access1T1555.003Credentials from Web Browsers
Discovery1T1680Local Storage Discovery
Collection1T1119Automated Collection
Command and Control1T1102.001Dead Drop Resolver

Malware and tools 8

NameDescriptionPlatform
BADNEWSBackdoor (RSS/forum dead-drop C2)Windows
BackConfigPlugin-based TrojanWindows
NDiskMonitor.NET backdoorWindows
VajraSpyAndroid RAT (trojanised messaging apps)Android
QuasarRATOpen-source RATWindows
TINYTYPHONBackdoorWindows
AutoIt backdoorBackdoorWindows
PowerSploitPowerShell post-exploitation frameworkWindows

Exploited vulnerabilities 6

CVECVSSDetail
CVE-2012-18568.8Microsoft Windows Common Controls (TabStrip) — RCE (KEV 2022-03-03)
CVE-2014-41147.8Windows OLE "Sandworm" — RCE via PowerPoint (KEV 2022-03-03)
CVE-2015-16417.8Microsoft Word — memory corruption RCE (KEV 2021-11-03)
CVE-2017-01997.8Microsoft Office/WordPad — OLE/HTA remote code execution (KEV 2021-11-03)
CVE-2017-118827.8Microsoft Office Equation Editor — memory corruption RCE (KEV 2021-11-03)
CVE-2017-85707.8Microsoft Office — composite moniker RCE (KEV 2022-02-25)

Highest CVSS first.

Infrastructure patterns

  • Dead-drop resolvers: encrypted C2 locations in comments on legitimate websites (MITRE ATT&CK, 2026)
  • C2 protocol that impersonates legitimate websites — as Dropping Elephant (Arctic Wolf, 2025)

Reporting and advisories 4