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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.
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| name | detecting-t1003-credential-dumping-with-edr |
| description | 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. |
| domain | cybersecurity |
| subdomain | threat-hunting |
| tags | ["threat-hunting","credential-dumping","lsass","mitre-t1003","edr","mimikatz","ntds","sam-database"] |
| version | 1.0 |
| author | mahipal |
| license | Apache-2.0 |
| d3fend_techniques | ["Token Binding","Execution Isolation","File Metadata Consistency Validation","Restore Access","Application Protocol Command Analysis"] |
| nist_csf | ["DE.CM-01","DE.AE-02","DE.AE-07","ID.RA-05"] |
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.MiniDumpWriteDump evade many EID 10 rules.vssadmin create shadow + ntdsutil ifm, and reg save HKLM\SAM, are 4688/EID 1 command-line hunts — invisible if command-line auditing is off.DS-Replication-Get-Changes) from a non-DC account; requires directory-service access auditing.MiniDump, procdump -ma lsass) and T1003.003 to confirm the EID 10, EID 1, and 4662 searches fire.| Concept | Description |
|---|---|
| T1003.001 | LSASS Memory -- dumping credentials from LSASS process |
| T1003.002 | Security Account Manager -- extracting local account hashes from SAM |
| T1003.003 | NTDS -- extracting domain hashes from Active Directory database |
| T1003.004 | LSA Secrets -- extracting service account passwords |
| T1003.005 | Cached Domain Credentials -- extracting DCC2 hashes |
| T1003.006 | DCSync -- replicating credentials from domain controller |
| Credential Guard | Virtualization-based isolation of LSASS secrets |
| RunAsPPL | Protected Process Light for LSASS |
index=sysmon EventCode=10
| where match(TargetImage, "(?i)lsass\.exe$")
| where GrantedAccess IN ("0x1FFFFF", "0x1F3FFF", "0x143A", "0x1F0FFF", "0x0040", "0x1010", "0x1410")
| where NOT match(SourceImage, "(?i)(csrss|lsass|svchost|MsMpEng|WmiPrvSE|taskmgr|procexp|SecurityHealthService)\.exe$")
| table _time Computer SourceImage SourceProcessId GrantedAccess CallTrace
index=sysmon EventCode=1
| where match(CommandLine, "(?i)(sekurlsa|lsadump|kerberos::list|crypto::certificates)")
OR match(CommandLine, "(?i)procdump.*-ma.*lsass")
OR match(CommandLine, "(?i)comsvcs\.dll.*MiniDump")
OR match(CommandLine, "(?i)ntdsutil.*\"ac i ntds\".*ifm")
OR match(CommandLine, "(?i)reg\s+save\s+hklm\\\\(sam|security|system)")
OR match(CommandLine, "(?i)vssadmin.*create\s+shadow")
| table _time Computer User Image CommandLine ParentImage
DeviceEvents
| where Timestamp > ago(7d)
| where ActionType in ("LsassAccess", "CredentialDumpingActivity")
| project Timestamp, DeviceName, AccountName, InitiatingProcessFileName,
InitiatingProcessCommandLine, ActionType, AdditionalFields
| sort by Timestamp desc
title: LSASS Memory Credential Dumping Attempt
status: stable
logsource:
product: windows
category: process_access
detection:
selection:
TargetImage|endswith: '\lsass.exe'
GrantedAccess|contains:
- '0x1FFFFF'
- '0x1F3FFF'
- '0x143A'
- '0x0040'
filter:
SourceImage|endswith:
- '\csrss.exe'
- '\lsass.exe'
- '\MsMpEng.exe'
- '\svchost.exe'
condition: selection and not filter
level: critical
tags:
- attack.credential_access
- attack.t1003.001
sekurlsa::logonpasswords to extract plaintext passwords, NTLM hashes, and Kerberos tickets.procdump.exe -ma lsass.exe lsass.dmp creating a memory dump for offline credential extraction.rundll32.exe comsvcs.dll MiniDump [LSASS_PID] dump.bin full using a built-in Windows DLL for LSASS dumping.reg save HKLM\SAM sam.save followed by reg save HKLM\SYSTEM system.save for local account hash extraction.Hunt ID: TH-CRED-[DATE]-[SEQ]
Host: [Hostname]
Dumping Method: [LSASS_Access/NTDS/SAM/DCSync]
Source Process: [Tool or process used]
Target: [LSASS/NTDS.dit/SAM/SECURITY]
Access Rights: [Granted access mask]
User Context: [Account performing the dump]
ATT&CK Technique: [T1003.00x]
Risk Level: [Critical/High/Medium]
Credentials at Risk: [Scope assessment]