BIOC Low

64-bit PowerShell spawning a 32-bit PowerShell

Malware typically spawns 32-bit processes to work on as many hosts as possible. This case is therefore suspicious when it happens on a 64-bit host.

Module:
Platform Analytics
Agent event type:
Process execution
Category:
Execution
Status:
Enabled
ATT&CK tactics: Execution (TA0002)
ATT&CK techniques: Command and Scripting Interpreter: PowerShell (T1059.001)
Indicator:

Process action type = execution AND target process cmd != *noprofile -nologo -noninteractive -executionpolicy allsigned -command set-executionpolicy allsigned AND target process name = powershell.exe AND target process path = *syswow64* AND target process path != *windows\\ccm\\systemtemp\\* Process initiated by = powershell.exe AND initiator path = *system32* AND initiator path != *\\windows\\ccmcache\\*

Preventable: yes