Suspicious Hidden Local Account via SpecialAccounts UserList
- Product
- windows
- Category
- registry_set
- Author
- HuntRule
- Published
- 2026-10-01
- Updated
- 2026-10-01
ATT&CK techniques
Defense EvasionRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects registry writes under the Winlogon SpecialAccounts UserList key, which hides a local account from the Windows logon screen and user management panels. Akira ransomware operators used this technique to conceal accounts created for persistence. Hidden accounts allow attackers to maintain covert access after initial remediation.
Reporting behind it
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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