Suspicious Automated SSH Lateral Movement with Batch Mode (via process_creation)

PremiumReviewedSigma · Medium · v1
Product
linux
Category
process_creation
Author
HuntRule
Published
2026-09-06
Updated
2026-09-06

ATT&CK techniques

Lateral Movement
  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 non interactive SSH connection attempts that disable host key checking and use batch mode with a short connect timeout, the pattern the Tomcat campaign uses to spread across hosts with harvested keys. Configuration management tooling can produce similar commands so validate the source process.

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Suspicious OpenSSH Reverse Tunnel Over HTTPS Port (Chaos Ransomware)
OpenSSH Native Server Feature Installation (via powershell)
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Suspicious Automated SSH Lateral Movement with Batch Mode (via process_creation)
Pivot detection · T1021.004 · 9 related

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