huntrule

Windows regini.exe Used to Modify Registry via Alternate Data Streams (ADS)

Alert on regini.exe process executions whose command line contains an ADS-style colon pattern used for registry modification.

FreeReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
Eli Salem, Sander Wiebing, oscd.community (SigmaHQ), DRL 1.1
Published
2020-10-12
Updated
2026-07-30
AnalysisDetection

ATT&CK techniques

Persistence → Defense Evasion

  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

  14. Impact

What it detects

This rule flags process creation events where regini.exe is executed with a command line containing an ADS-style stream marker (a colon not followed by space or backslash). Using alternate data streams with regini.exe can be leveraged to tamper with registry values for persistence or defense impairment. It relies on Windows process creation telemetry, specifically the executed image name/original filename and the command-line content pattern.

Reporting behind it

Related detections9 linkedT1112 — drag to rearrange
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Malicious WDigest Credential Caching Enabled via Registry (via registry_set)
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Malicious Gh0stBins RAT Registry Marker HHClient
Suspicious PebbleDash C2 Configuration Stored Under WMI Security Key (via registry_set)
Suspicious WDigest UseLogonCredential Enablement for Plaintext Credential Theft (via registry_set)
Windows regini.exe Used to Modify Registry via Alternate Data Streams (ADS)
Pivot detection · T1112 · 9 related

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