Suspicious AtlasRAT Loader Artifacts in Public Documents (via file_event)

PremiumReviewedSigma · Medium · v1
Product
windows
Category
file_event
Author
HuntRule
Published
2026-09-05
Updated
2026-09-05

ATT&CK techniques

Execution → 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 the creation of AtlasRAT loader components such as Wxfun.dll, offline.ini, and MODIf.html in the Public Documents directory. These filenames and location are used by the AtlasRAT in-memory loader chain to stage and inject the RAT.

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Suspicious AtlasRAT Loader Artifacts in Public Documents (via file_event)
Pivot detection · T1574.001 · 9 related

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