DCShadow
Fake domain controller pushes malicious AD changes via replication
categoryIdentity, authentication and credential attacksseverityVery HighdetectabilityLowlabnot yet measured
Example: Mimikatz
Detection opportunity what to watch for
A benign emulation of this technique’s linchpin behaviour — the command an attacker runs, and where we’ve detonated it in the lab, exactly what the SIEM saw, what caught it, and what it missed.
What the attacker runs
powershell -ExecutionPolicy Bypass -File C:\lab\detonate.ps1 -Technique T1207 -Tool atomic -RunId <run-id> -Command 'Invoke-AtomicTest T1207 -TestGuids 0f4c5eb0-98a0-4496-9c3d-656b4f2bc8f6 -GetPrereqs; Invoke-AtomicTest T1207 -TestGuids 0f4c5eb0-98a0-4496-9c3d-656b4f2bc8f6 -TimeoutSeconds 120'Queued for lab measurement — not yet detonated.
Classification
25 values: 13 reviewed, 11 imported, 1 derived. What do these mean?
Exploitability
| Attack vector | Credential attacks |
|---|---|
| Reach (CVSS) | Network |
| Attack complexity | Low |
| Privileges required | High |
| User interaction | None |
| Attacker skill required | High |
| Resources required | Low |
| Likelihood / prevalence | Medium |
| Maturity | Established |
Impact & scope
| Severity | Very High |
|---|---|
| Impact | Integrity |
| Platform | Windows |
| Environment | On-premises |
| Target asset class | IdentityServer |
| Kill-chain phase (tactic) | Defense Impairment |
Detection & telemetry
| Detectability | Low |
|---|---|
| Testability | Atomic Red Team test |
| Data sources (ATT&CK data components) | Active Directory Credential RequestActive Directory Object AccessActive Directory Object CreationActive Directory Object ModificationNetwork Traffic Content |
| Defense bypassed | Log analysis |
| Attack permissions (ATT&CK) | Administrator |
Detection & response
Mitigated by 14
D3-ANAAd3fendD3-APCAd3fendD3-CAAd3fendD3-CSPPd3fendD3-DId3fendD3-NTCDd3fendD3-NTFd3fendD3-NTSAd3fendD3-PHDURAd3fendD3-PMADd3fendD3-RDd3fendD3-RTSDd3fendD3-SCPd3fendD3-UGLPAd3fend
Detected by 3
- DET0276 attack-detection-strategy
20d96d95-5a20-4cf1-a483-f3bda8a7c037sigma32e19d25-4aed-4860-a55a-be99cb0bf7edsigma
Tested by 1
0f4c5eb0-98a0-4496-9c3d-656b4f2bc8f6atomic
Framework references
- Primary source: https://attack.mitre.org/techniques/T1207/
- attack: T1207 (primary)
Evidence & sources
- ev-0001 (Cyber Attack Taxonomy) — Name, definition and Example/ID taken verbatim from the 'Identity, authentication and credential attacks' table, line 329 of Cyber-Attack-Taxonomy.md
- ev-0002 (MITRE Enterprise ATT&CK v19.2 (STIX 2.1)) — ATT&CK usage prevalence: 1 groups/software/campaigns reference this technique (ATT&CK enterprise v19.2)