Possible Krasue Linux RAT Command and Control on Uncommon Port 52699

PremiumReviewedSigma · Low · v1
Product
linux
Category
network_connection
Author
HuntRule
Published
2026-09-26
Updated
2026-09-26

ATT&CK techniques

C2
  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. Exfiltration

  13. Impact

What it detects

This rule detects network traffic to the uncommon port 52699 which the Krasue Linux RAT uses for its embedded command and control server on compromised hosts. The rootkit hides this port range while relaying operator commands over it. Detecting connections to it can surface Krasue infected servers despite the kernel level concealment.

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Possible Krasue Linux RAT Command and Control on Uncommon Port 52699
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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.