Malicious Recon Output Staged in Qlik Sense Fonts Directory by Cactus Ransomware

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-10-15
Updated
2026-10-15

ATT&CK techniques

Initial Access → Discovery
  1. Recon

  2. Resource Dev

  3. Execution

  4. Persistence

  5. Priv Esc

  6. Defense Evasion

  7. Cred Access

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects discovery command output being redirected into the Qlik Sense web-served fonts directory using the qle.ttf or qle.woff filenames, a data-staging technique used by Cactus ransomware operators after exploiting Qlik Sense to make recon results retrievable over HTTP. Writing whoami or quser output into a webroot fonts path is a strong indicator of hands-on-keyboard exploitation.

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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.