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HighSigmaHQStan Beukers

Process Execution From Shared Memory Directory

Detects the execution of a binary from the Linux shared memory directory /dev/shm. This directory is a tmpfs mount backed entirely by RAM and is abused by attackers for fileless malware staging because files written…

Description

Detects the execution of a binary from the Linux shared memory directory /dev/shm. This directory is a tmpfs mount backed entirely by RAM and is abused by attackers for fileless malware staging because files written there never touch physical disk and may evade disk-based detection.

Detection logic

Detection requirements

Platform
LinuxWindows

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Log source product
linux
Log source category
process_creation

Known benign triggers

  • Unlikely in production environments; some container runtimes or IPC frameworks may use /dev/shm for inter-process communication but should not spawn executables.

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