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Open Threat Intel Archive

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S1239malware

TONESHELL

TONESHELL is a custom backdoor that has been used since at least Q1 2021. TONESHELL malware has previously been leveraged by Chinese affiliated actors identified as Mustang Panda.

Platforms: Windows

MITRE ATT&CK ↗

Linked entities · 24

usesT1480.001Environmental Keying usesT1480Execution Guardrails usesT1036.005Match Legitimate Resource Name or…usesT1518.001Security Software Discovery usesT1678Delay Execution usesT1113Screen Capture usesT1497.002User Activity Based Checks usesT1057Process Discovery usesT1082System Information Discovery usesT1027.007Dynamic API Resolution usesT1574.001DLL usesT1053.005Scheduled Task usesT1047Windows Management Instrumentation usesT1132.002Non-Standard Encoding usesT1680Local Storage Discovery usesT1070.004File Deletion usesT1056.001Keylogging usesT1547.001Registry Run Keys / Startup Folder usesT1105Ingress Tool Transfer usesT1010Application Window Discovery usesT1218.010Regsvr32 usesT1553.002Code Signing usesT1055.001Dynamic-link Library Injection usesT1573.001Symmetric Cryptography