Suspicious Offensive Recon and Credential Tools Execution (via process_creation)

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-05-09
Updated
2026-08-28

ATT&CK techniques

Cred Access → Discovery
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects execution of the fscan network scanner and the SharpDecryptPwd credential extraction utility. The SLOW#TEMPEST campaign used these tools for internal reconnaissance and browser credential theft.

Related detections9 linkedT1555.003 — drag to rearrange
Windows PowerShell ScriptBlock keyword match for WinPwn tool usage
Windows process command line matches WinPwn tool execution keywords
Malicious Fake Fortinet Patch Infostealer Execution (via process_creation)
Suspicious BoryptGrab Infostealer Staging Directory (via file_event)
Malicious Interlock Credential Stealer Output File
Suspicious Fscan Internal Network Scanner Execution (via process_creation)
Possible Network Service Scanning via Nmap or Masscan (via process_creation)
Malicious Anonymous Login - Domain Specified (via security)
Malicious Browser Master Key Decryption Artifacts Written by Katz Stealer (via file_event)
Suspicious Offensive Recon and Credential Tools Execution (via process_creation)
Pivot detection · T1555.003 · 9 related

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