Suspicious Renamed Tunneling Tool Executing from Windows Tasks Directory

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-10-28
Updated
2026-10-28

ATT&CK techniques

Defense Evasion → C2
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Cred Access

  8. Discovery

  9. Lateral Movement

  10. Collection

  11. Exfiltration

  12. Impact

What it detects

This rule detects binaries such as chrome.exe or tunn.exe running from the Windows Tasks directory, where Spirals ransomware operators staged renamed Chisel and tunneling utilities. Legitimate browsers and tools do not execute from this path.

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Malicious GS-Netcat Command and Control via Global Socket Relay Network (via dns_query)
Suspicious Microsoft Dev Tunnel Domain Resolution via DNS (via dns_query)
Suspicious Renamed PowerShell Binary Execution (via process_creation)
Possible DarkGate Process Injection via iTunesHelper Spawning vbc.exe
Suspicious Renamed PowerShell Copied from System32 via Batch Loader
Suspicious DNS Query to Dynamic DNS and Tunneling Providers Abused by RATs
Suspicious SSH Reverse Tunnel Over DNS Port
Suspicious Renamed Tunneling Tool Executing from Windows Tasks Directory
Pivot detection · T1572 · 9 related

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