Suspicious Execution of PAN-OS Captive Portal Implant Binaries (via process_creation)

PremiumReviewedSigma · High · v1
Product
linux
Category
process_creation
Author
HuntRule
Published
2026-10-21
Updated
2026-10-21

ATT&CK techniques

Initial Access → C2
  1. Recon

  2. Resource Dev

  3. Execution

  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 execution of implant binaries dropped during exploitation of the PAN-OS Captive Portal zero-day, staged under /var/tmp as linuxap, linuxda, or linuxupdate. These files provide attacker foothold and follow-on tooling on the compromised firewall.

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Suspicious Execution of PAN-OS Captive Portal Implant Binaries (via process_creation)
Pivot detection · T1190 · 9 related

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