Suspicious Remote Payload Download Piped to Shell on Linux (via process_creation)

PremiumReviewedSigma · Medium · v1
Product
linux
Category
process_creation
Author
HuntRule
Published
2026-10-14
Updated
2026-10-14

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 curl or wget downloads piped directly into a shell interpreter. Attackers exploiting OpenMetadata used this pattern to retrieve and execute a cryptominer without writing an intermediate file.

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Suspicious Remote Payload Download Piped to Shell on Linux (via process_creation)
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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.