Individual skill
detecting-t1003-credential-dumping-with-edr
Detect OS credential dumping techniques targeting LSASS memory, SAM database, NTDS.dit, and cached credentials using EDR telemetry, Sysmon process access monitoring, and Windows security event correlation.
internal/tools/skills/data/threat-hunting/detecting-t1003-credential-dumping-with-edr/SKILL.md
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- Last checked
- Nov 7, 2026
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- 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
- credential-dumping Declared skill tag
- lsass Declared skill tag
- mitre-t1003 Declared skill tag
- edr Declared skill tag
- mimikatz Declared skill tag
- ntds Declared skill tag
- sam-database Declared skill tag
- security Derived category
- operations Derived category
- data Derived category
- data-databases Derived category
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SKILL.mdcore · 7,740 bytes
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# Detecting T1003 Credential Dumping with EDR
## When to Use
- When hunting for credential theft activity in the environment
- After compromise indicators suggest attacker has elevated privileges
- When EDR alerts fire for LSASS access or suspicious process memory reads
- During incident response to determine scope of credential compromise
- When auditing LSASS protection controls (Credential Guard, RunAsPPL)
## Detection Gaps & Validation
- **GrantedAccess masking:** rules pinned to `0x1FFFFF`/`0x1010` miss tools that open LSASS with minimal rights — modern dumpers request `0x1438`/`0x1410` or clone the handle via `PROCESS_DUP_HANDLE (0x0040)`. Match the EID 10 CallTrace (into `dbgcore.dll`/`dbghelp.dll`/`ntdll!NtReadVirtualMemory`) rather than a single mask.
- **PPL/Credential Guard gaps:** if RunAsPPL or Credential Guard is not enabled, plaintext is recoverable and some EDRs suppress the alert — confirm protection state; conversely handle-clone and `MiniDumpWriteDump` evade many EID 10 rules.