What’s the Secret? Unpacking Command-Line Argument Manipulation

Command-line argument spoofing is an attack technique used to manipulate the reported command-line arguments of processes, allowing malware to disguise itself as benign and bypass detection.
This evasion tactic undermines Security Information and Event Management (SIEM) systems and Sysmon logging, which heavily rely on process command-line data for threat analysis.
By creating a process in a suspended state and modifying its memory to replace falsified arguments with actual malicious commands, attackers can stealthily manipulate command-line arguments.
To counter this threat, defenders should implement a multi-layered detection approach with event correlation, deep memory inspection, anomaly detection based on anomaly detection, and monitoring of suspicious API calls and syscalls.
Continuous threat hunting and enhancing logging solutions are essential in combating evolving attacker techniques.

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