Suspicious Spectre Ops Staging in CullinetProgram Directory via file_event

PremiumReviewedSigma · High · v1
Product
windows
Category
file_event
Author
HuntRule
Published
2026-06-20
Updated
2026-08-28

ATT&CK techniques

Persistence → Priv Esc
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Defense Evasion

  6. Cred Access

  7. Discovery

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects the Spectre Ops stealer staging files inside a CullinetProgram directory under AppData Roaming, which it pairs with a Startup folder entry for persistence. The uniquely named working directory holds the malware components between reboots. This distinctive folder name is not associated with legitimate software and reliably marks the stealer footprint on disk.

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Suspicious Spectre Ops Staging in CullinetProgram Directory via file_event
Pivot detection · T1547.001 · 9 related

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