Individual skill

hunting-for-lolbins-execution-in-endpoint-logs

Hunt for adversary abuse of Living Off the Land Binaries (LOLBins) by analyzing endpoint process creation logs for suspicious execution patterns of legitimate Windows system binaries used for malicious purposes.

internal/tools/skills/data/threat-hunting/hunting-for-lolbins-execution-in-endpoint-logs/SKILL.md

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Last checked: Nov 7, 2026

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Repository stars (not skill ratings): 1,310
Repository last updated: Nov 7, 2026
License: Apache-2.0

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cybersecurity Repository topic
security Repository topic
bug-bounty Repository topic
automation Repository topic
autonomous-pentesting Repository topic
ai-agent Repository topic
ai-security Repository topic
ethical-hacking Repository topic
golang Repository topic
penetration-testing Repository topic
threat-hunting Declared skill tag
lolbins Declared skill tag
living-off-the-land Declared skill tag
endpoint-detection Declared skill tag
process-monitoring Declared skill tag
mitre-t1218 Declared skill tag
defense-evasion Declared skill tag
operations Derived category
security Derived category

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SKILL.mdcore · 8,945 bytes

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# Hunting for LOLBins Execution in Endpoint Logs

## When to Use

- When hunting for fileless attack techniques that abuse built-in Windows binaries
- After threat intelligence indicates LOLBin-based campaigns targeting your industry
- When investigating alerts for suspicious use of certutil, mshta, rundll32, or regsvr32
- During purple team exercises testing detection of defense evasion techniques
- When assessing endpoint detection coverage for MITRE ATT&CK T1218 sub-techniques

## Detection Gaps & Validation

- **4688 lacks `OriginalFileName`.** Renamed-LOLBin detection (e.g., `certutil.exe`→`update.exe`) requires Sysmon EID 1 `OriginalFileName`/`Hashes`; relying on Security 4688 alone misses it. Also confirm command-line auditing is on, or the `CommandLine` field is blank and every keyword rule silently fails.
- **Keyword/regex lists miss obfuscation:** caret/quote insertion (`c^ertu^til`, `"certutil"`), env-var expansion (`%COMSPEC%`), and base64 `-enc` defeat literal matches.