PowerShell Remote Download From Bunny CDN Host

PremiumReviewedSigma · Medium · v1
Product
windows
Category
ps_script
Author
HuntRule
Published
2026-08-14
Updated
2026-08-28

ATT&CK techniques

Execution → C2
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Persistence

  5. Priv Esc

  6. Defense Evasion

  7. Cred Access

  8. Discovery

  9. Lateral Movement

  10. Collection

  11. Exfiltration

  12. Impact

What it detects

This rule detects PowerShell download activity referencing a b-cdn.net Bunny CDN host, an abused delivery infrastructure in the LummaStealer campaign. Attackers stage payloads on legitimate CDN domains to blend malicious downloads with normal traffic.

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PowerShell Remote Download From Bunny CDN Host
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.