Suspicious Network Connection From CUPS Foomatic-Rip Child Process

PremiumReviewedSigma · High · v1
Product
linux
Category
network_connection
Author
HuntRule
Published
2026-06-24
Updated
2026-08-28

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 an outbound network connection initiated by a child of the foomatic-rip print filter which indicates post-exploitation activity following abuse of the CUPS printing vulnerability. Adversaries who gain execution through the print filter reach out to command and control or download additional tooling from the compromised host.

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Malicious Foomatic-Rip Filter Spawning Shell via CUPS Exploitation
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Suspicious Network Connection From CUPS Foomatic-Rip Child Process
Pivot detection · T1203 · 9 related

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