Individual skill
detecting-process-hollowing-technique
Detect process hollowing (T1055.012) by analyzing memory-mapped sections, hollowed process indicators, and parent-child process anomalies in EDR telemetry.
internal/tools/skills/data/threat-hunting/detecting-process-hollowing-technique/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Last checked
- Nov 7, 2026
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- 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
- mitre-attack Declared skill tag
- process-hollowing Declared skill tag
- process-injection Declared skill tag
- edr Declared skill tag
- t1055 Declared skill tag
- proactive-detection Declared skill tag
- operations Derived category
- security Derived category
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SKILL.mdcore · 5,993 bytes
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# Detecting Process Hollowing Technique
## When to Use
- When investigating suspected fileless malware or in-memory threats
- After EDR alerts on process injection or suspicious memory operations
- When hunting for defense evasion techniques in a compromised environment
- When threat intel reports indicate process hollowing in active campaigns
- During purple team exercises validating T1055.012 detection coverage
## Detection Gaps & Validation
- **Event ID 25 requires Sysmon 13+:** ProcessTampering (the cleanest hollowing signal) does not exist on older agents — confirm the Sysmon version or you silently miss every hollowing event. EID 25 also only flags image/section divergence, not all RunPE variants.
- **CREATE_SUSPENDED is not logged directly:** the suspended-create → unmap → write → resume chain has no single event. Stitch EID 1 (process create) + EID 8 (CreateRemoteThread) + EID 10 (ProcessAccess `0x0008 PROCESS_VM_OPERATION` / `0x0020 PROCESS_VM_WRITE`) on the same target PID.