Suspicious Acrobat.exe Loading Co-located DLL from ProgramData

PremiumReviewedSigma · High · v1
Product
windows
Category
image_load
Author
HuntRule
Published
2026-09-26
Updated
2026-09-26

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 a signed Acrobat.exe located under ProgramData side-loading a co-located Acrobat.dll. Adversaries plant an unsigned malicious DLL beside a legitimate signed executable in ProgramData so it is loaded under a trusted process. This masquerade plus wrong-path context is a strong indicator of DLL side-loading.

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Suspicious Acrobat.exe Loading Co-located DLL from ProgramData
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.