Malicious POOLRAT Backdoor Log File Creation (via file_event)

PremiumReviewedSigma · High · v1
Product
linux
Category
file_event
Author
HuntRule
Published
2026-10-18
Updated
2026-10-18

ATT&CK techniques

Execution
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Persistence

  5. Priv Esc

  6. Defense Evasion

  7. Cred Access

  8. Discovery

  9. Lateral Movement

  10. Collection

  11. C2

  12. Exfiltration

  13. Impact

What it detects

This rule detects creation of the file /tmp/xweb_log.md, the hardcoded error-log artifact written by the POOLRAT Linux backdoor deployed by Gleaming Pisces. This fixed path is unique to the implant and indicates the backdoor is running on the host.

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