Suspicious Timestomp and Hidden Attribute Set on NTUSER Data File by EAGERBEE

PremiumReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-10-08
Updated
2026-10-08

ATT&CK techniques

Defense Evasion
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule detects use of attrib to apply system, hidden, and archive attributes to a decoy ntusers0.dat file used by the EAGERBEE backdoor. The malware hides its staging file and manipulates attributes to blend with genuine user profile data. Setting these attributes on this specific file indicates indicator hiding.

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Suspicious Timestomp and Hidden Attribute Set on NTUSER Data File by EAGERBEE
Pivot detection · T1070.006 · 9 related

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