Suspicious Fileless Execution From Memory File Descriptor via PUMAKIT

ATT&CK techniques

Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1014Rootkit
- T1620Reflective Code Loading
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects a process executing from an in-memory file descriptor path such as memfd or dev fd which is the fileless execution technique used by the PUMAKIT rootkit loader to run payloads without touching disk. Adversaries use memfd_create and execveat to evade file based detection and forensic recovery on Linux hosts.

Reporting behind it

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Suspicious Fileless Execution From Memory File Descriptor via PUMAKIT

Pivot detection · T1014 · 9 related

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

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