Suspicious T-Rex CoinMiner Binaries in Windows NT Program Files Folder (via file_event)

PremiumReviewedSigma · Medium · v1
Product
windows
Category
file_event
Author
HuntRule
Published
2026-09-05
Updated
2026-09-05

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 the creation of T-Rex CoinMiner executables such as mmc.exe, mtn.exe, syc.exe, syn.exe, or tnt.exe inside a Windows NT folder under Program Files x86 as used in the internet cafe mining campaign. Placing miner binaries under a fake Windows NT directory is a masquerading technique.

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Suspicious T-Rex CoinMiner Binaries in Windows NT Program Files Folder (via file_event)
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.