huntrule

Suspicious PowerShell IEX Execution of documentLoger Payload via CharmingCypress

PremiumReviewedSigma · High · v1
Product
windows
Category
ps_script
Author
HuntRule
Published
2026-11-02
Updated
2026-11-02
AnalysisDetection

ATT&CK techniques

Execution

  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 PowerShell reading and invoking the contents of documentLoger.txt via IEX as used by CharmingCypress backdoors. The actor stored encoded payloads in text files and executed them in memory. In-memory execution of file-staged scripts evades file-based detection.

Reporting behind it

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Suspicious PowerShell Download Cradle Spawned from Explorer via ClickFix Lure (via process_creation)
Suspicious PowerShell IEX Execution of documentLoger Payload via CharmingCypress
Pivot detection · T1059.001 · 9 related

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