Emerging Threathightest
Potential POWERTRASH Script Execution
Detects potential execution of the PowerShell script POWERTRASH
Convert In Phoenix Studio
Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.
Launch
Emerging Threat
Active Threat
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
Log Source
WindowsPowerShell Script
ProductWindows← raw: windows
CategoryPowerShell Script← raw: ps_script
Definition
bade5735-5ab0-4aa7-a642-a11be0e40872
Detection Logic
Detection Logic1 selector
detection:
selection:
ScriptBlockText|contains|all:
- 'IO.Compression.DeflateStream'
- 'IO.MemoryStream'
- '::FromBase64String'
- 'GetDelegateForFunctionPointer'
- '.Invoke()'
- 'GlobalAssemblyCache'
condition: selectionFalse Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
References
MITRE ATT&CK
Tactics
Sub-techniques
Groups
Other
detection.emerging-threats
Rule Metadata
Rule ID
4e19528a-f081-40dd-be09-90c39352bd64
Status
test
Level
high
Type
Emerging Threat
Created
Thu May 04
Path
rules-emerging-threats/2023/TA/FIN7/posh_ps_apt_fin7_powertrash_execution.yml
Raw Tags
attack.executionattack.t1059.001attack.g0046detection.emerging-threats