Suspicious Execution of Hidden Binary from Private Tmp via Process Creation

ATT&CK techniques

Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1564.001Hidden Files and Directories
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects execution of a dot-prefixed hidden binary from the private tmp directory which the macOS pirate ship campaign uses to run its dropped Khepri payload from a concealed location. Running hidden executables out of a world-writable temporary directory is a strong indicator of malware attempting to evade file visibility.

Reporting behind it

Related detections9 linkedT1564.001 — drag to rearrange

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Malicious Cryptominer Staging Files Dropped in tmp Directory

Suspicious Batch Script Unhiding Files via Attrib From Temp

Suspicious Hidden Directory configrc for Bandwidth SDK Abuse

Suspicious Execution of Hidden Binary from Private Tmp via Process Creation

Pivot detection · T1564.001 · 9 related

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

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