Suspicious MSR Kernel Module Loading for Cryptomining Optimization via Command Line (via process_creation)

PremiumReviewedSigma · Medium · v1
Product
linux
Category
process_creation
Author
HuntRule
Published
2026-11-01
Updated
2026-11-01

ATT&CK techniques

Impact
  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

What it detects

This rule detects loading of the model specific register kernel module via modprobe msr, which cryptominer ELF binaries use to write MSR values that boost hashing performance. It is associated with cryptominer ELFs abusing MSR reported by Uptycs. Loading the msr module and writing to it is uncommon on production servers and, combined with mining activity, indicates resource-hijacking malware tuning the CPU.

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Pivot detection · T1496 · 9 related

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