Malicious RustyStealer Masquerading as AudioDriver in Windows Temp

ATT&CK techniques

Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1036.005Match Legitimate Resource Name or Location
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects execution of AudioDriver2.0.exe from the Windows Temp directory. The Ymir intrusion staged the RustyStealer payload under this driver-like name in Windows Temp to collect credentials before ransomware deployment, and this path and name combination is not legitimate.

Reporting behind it

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Malicious RustyStealer Masquerading as AudioDriver in Windows Temp

Pivot detection · T1036.005 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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