Malicious REF5961 PsExec-Style Remote Service Execution from Windows Help Directory via Process Creation

ATT&CK techniques

Lateral Movement

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
- T1021.002SMB/Windows Admin Shares
Collection
C2
Exfiltration
Impact

What it detects

This rule detects PsExec-style remote execution that runs a payload as a service from the Windows help directory as seen in the REF5961 intrusion set deploying RUDEBIRD, where an actor uses the accepteula system service flags together with a help directory path to move laterally and run code under a masqueraded location for stealth.

Reporting behind it

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Malicious REF5961 PsExec-Style Remote Service Execution from Windows Help Directory via Process Creation

Pivot detection · T1021.002 · 9 related

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