Individual skill
hunting-for-webshell-activity
Runs a hypothesis-driven threat hunt for web shell deployment (T1505.003) on internet-facing servers by analyzing file creation in web directories, suspicious child-process spawning from web server processes, and anomalous HTTP request patterns. Use when hunting for web shells after a public-facing app compromise, when EDR/SIEM alerts fire on webserver process anomalies, or during incident response on internet-facing infrastructure.
skills/hunting-for-webshell-activity/SKILL.md
Source commit 54a798831d2266a3ca61ce68a7acb80b81160d57
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- Yes
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- Observed behavior
- Local scripts
- Last checked
- Nov 9, 2026
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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
- webshell Declared skill tag
- persistence Declared skill tag
- web-server Declared skill tag
- t1505 Declared skill tag
- proactive-detection Declared skill tag
- devops Derived category
- operations Derived category
- security Derived category
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LICENSEasset · 11,255 bytesSKILL.mdcore · 3,613 bytesassets/template.mddoc · 2,640 bytesreferences/api-reference.mddoc · 1,767 bytesreferences/standards.mddoc · 1,571 bytesreferences/workflows.mddoc · 2,982 bytesscripts/agent.pyruns · 6,797 bytesscripts/process.pyruns · 4,532 bytes
Read excerpt
# Hunting For Webshell Activity
## When to Use
- When proactively hunting for indicators of hunting for webshell activity 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)