Individual skill
detecting-suspicious-powershell-execution
Hunt for suspicious PowerShell execution (T1059.001) such as encoded commands, download cradles, AMSI bypass, and constrained language mode evasion using EDR telemetry (CrowdStrike, Microsoft Defender for Endpoint), Sysmon, and SIEM queries (Splunk, Elastic). Use when proactively threat hunting, triaging EDR/SIEM alerts, or scoping an incident involving malicious PowerShell activity.
skills/detecting-suspicious-powershell-execution/SKILL.md
Source commit 54a798831d2266a3ca61ce68a7acb80b81160d57
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
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Repository context
- Repository stars (not skill ratings)
- 35,926
- Repository last updated
- Aug 31, 2026
- License
- Apache-2.0
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- ai-agents Repository topic
- claude-code Repository topic
- cybersecurity Repository topic
- incident-response Repository topic
- mitre-attack Repository topic
- penetration-testing Repository topic
- red-team Repository topic
- security Repository topic
- cloud-security Repository topic
- malware-analysis Repository topic
- threat-hunting Declared skill tag
- mitre-attack Declared skill tag
- powershell Declared skill tag
- execution Declared skill tag
- t1059 Declared skill tag
- amsi Declared skill tag
- proactive-detection Declared skill tag
- security Derived category
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LICENSEasset · 11,255 bytesSKILL.mdcore · 3,692 bytesSKILL.mdcore · 3,692 bytesassets/template.mddoc · 2,658 bytesreferences/api-reference.mddoc · 2,589 bytesreferences/standards.mddoc · 1,593 bytesreferences/workflows.mddoc · 2,982 bytesscripts/agent.pyruns · 6,004 bytesscripts/process.pyruns · 3,774 bytes
Read excerpt
# Detecting Suspicious Powershell Execution
## When to Use
- When proactively hunting for indicators of detecting suspicious powershell execution in the environment
- After threat intelligence indicates active campaigns using these techniques
- During incident response to scope compromise related to these techniques
- When EDR or SIEM alerts trigger on related indicators
- During periodic security assessments and purple team exercises
## Prerequisites
- EDR platform with process and network telemetry (CrowdStrike, MDE, SentinelOne)
- SIEM with relevant log data ingested (Splunk, Elastic, Sentinel)