huntrule

Windows: SyncAppvPublishingServer.exe execution via PowerShell script block content

Flags PowerShell script blocks that reference SyncAppvPublishingServer.exe, indicating possible execution via a PowerShell-restricted workflow.

FreeReviewedSigma · Medium · v2
Product
windows
Category
ps_script
Author
Ensar Şamil, @sblmsrsn, OSCD Community (SigmaHQ), DRL 1.1
Published
2020-10-05
Updated
2026-07-31
AnalysisDetection

ATT&CK techniques

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 PowerShell script block content that includes the string "SyncAppvPublishingServer.exe". Attackers can use this executable to evade PowerShell execution restrictions, making its presence inside PowerShell telemetry a useful indicator of stealthy process launching. The detection relies on Script Block Logging and on script block text containing the specified executable name.

Reporting behind it

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Windows: SyncAppvPublishingServer.exe execution via PowerShell script block content
Pivot detection · T1218 · 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.