Suspicious Curl Download to Public User Directory

PremiumReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-07-31
Updated
2026-08-28

ATT&CK techniques

C2
  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. Exfiltration

  13. Impact

What it detects

This rule detects curl being used to download a file into the C:\\Users\\Public directory, the staging behavior of the Snake Python infostealer delivered through messaging services. Attackers stage a ZIP payload in this world-writable location before unpacking and executing it. The combination of a download utility writing to Public is a strong sign of malware staging.

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Suspicious Curl Download to Public User Directory
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Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.