Suspicious Brutforce with Denied Access Due to Account Restrictions Policies (via security)

PremiumReviewedSigma · Medium · v1
Product
windows
Service
security
Author
HuntRule
Published
2026-09-02
Updated
2026-09-02

ATT&CK techniques

Initial Access → Defense Evasion
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Defense Evasion

  6. Cred Access

  7. Discovery

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects attemps to use a comprimised account but failed to login due to account restrictions policies (permissions, time restrictions, workstation, logon type, ...).

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Suspicious Brutforce with Denied Access Due to Account Restrictions Policies (via security)
Pivot detection · T1078 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.