Suspicious DLL Sideloading by hpreader Executable from Documents

PremiumReviewedSigma · High · v1
Product
windows
Category
image_load
Author
HuntRule
Published
2026-09-20
Updated
2026-09-20

ATT&CK techniques

Execution → 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 detects the hpreader host executable loading a DLL from the user Documents directory, the DLL sideloading technique used by Ghost Crypt to launch PureRAT. A signed reader binary loading a masqueraded dependency from Documents rather than its install path is highly abnormal and indicates search-order hijacking.

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Pivot detection · T1574.001 · 9 related

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