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Sidewinder G0121

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Also known as: T-APT-04, Rattlesnake

Updated at source on Jul 31, 2026 · View on MITRE ATT&CK

2
associated CVEs
32
Techniques
1
Malware and tools

Sidewinder is a suspected Indian threat actor group that has been active since at least 2012. They have been observed targeting government, military, and business entities throughout Asia, primarily focusing on Pakistan, China, Nepal, and Afghanistan.

Exploited vulnerabilities

CVEs cited by MITRE ATT&CK for this group, with the source excerpt. Records not yet published here appear without a link.

CVE-2020-0674 High · 7.5 KEV Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability
“Sidewinder has exploited vulnerabilities to gain execution including CVE-2017-11882 and CVE-2020-0674.”
CVE-2017-11882 High · 7.8 KEV Ransomware Microsoft Office Memory Corruption Vulnerability
“Sidewinder has exploited vulnerabilities to gain execution including CVE-2017-11882 and CVE-2020-0674.”

Techniques by tactic

Reconnaissance
T1598.002 Spearphishing AttachmentT1598.003 Spearphishing Link
Initial Access
T1566.001 Spearphishing AttachmentT1566.002 Spearphishing Link
Execution
T1059.001 PowerShellT1059.005 Visual BasicT1059.007 JavaScriptT1203 Exploitation for Client ExecutionT1204.001 Malicious LinkT1204.002 Malicious FileT1559.002 Dynamic Data ExchangeT1574.001 DLL
Persistence
T1547.001 Registry Run Keys / Startup Folder
Privilege Escalation
T1547.001 Registry Run Keys / Startup Folder
Stealth
T1027.010 Command ObfuscationT1027.013 Encrypted/Encoded FileT1036.005 Match Legitimate Resource Name or LocationT1218.005 MshtaT1574.001 DLL
Discovery
T1016 System Network Configuration DiscoveryT1033 System Owner/User DiscoveryT1057 Process DiscoveryT1082 System Information DiscoveryT1083 File and Directory DiscoveryT1124 System Time DiscoveryT1518 Software DiscoveryT1518.001 Security Software Discovery
Collection
T1074.001 Local Data StagingT1119 Automated Collection
Command and Control
T1071.001 Web ProtocolsT1105 Ingress Tool Transfer
Exfiltration
T1020 Automated Exfiltration

Malware and tools

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