huntrule

Windows UAC Bypass via iscsicpl.exe DLL Search Order Hijacking (iscsiexe.dll)

Detects iscsicpl.exe loading iscsiexe.dll from outside C:\Windows, consistent with UAC bypass DLL hijacking.

FreeReviewedSigma · High · v2
Product
windows
Category
image_load
Author
Nasreddine Bencherchali (Nextron Systems) (SigmaHQ), DRL 1.1
Published
2022-07-17
Updated
2026-07-31
AnalysisDetection

ATT&CK techniques

Priv Esc → 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 identifies a likely UAC bypass attempt where SysWOW64\iscsicpl.exe loads a DLL ending with \iscsiexe.dll. It focuses on image loads where the loaded DLL path includes C:\Windows\ but is not consistent with the expected baseline described by the filter. Attackers may use this behavior to execute code in a higher-privileged context; the detection relies on Windows image load telemetry showing the initiating Image and the loaded DLL name/path.

Reporting behind it

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Malicious User Account Control Bypass via Auto-Elevating Binary Hijack (via process_creation)
Suspicious Mock Trusted Directory with Trailing Space (via process_creation)
Windows UAC Bypass via iscsicpl.exe DLL Search Order Hijacking (iscsiexe.dll)
Pivot detection · T1548.002 · 9 related

Changelog

v2
  1. v2
    Candidate ingested via manual entry.2026-07-31
  2. v1
    No changelog recorded for this version.2026-07-30

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