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MediumSigmaHQSwachchhanda Shrawan Poudel (Nextron Systems)

Indirect Command Execution via SFTP ProxyCommand

Detects the use of SFTP.exe to execute commands indirectly via ProxyCommand parameter. Threat actors were seen leveraging this legitimate Windows binary to bypass security controls and execute arbitrary commands…

Description

Detects the use of SFTP.exe to execute commands indirectly via ProxyCommand parameter. Threat actors were seen leveraging this legitimate Windows binary to bypass security controls and execute arbitrary commands while evading detection.

Detection logic

Detection requirements

Platform
Windows

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

Log source product
windows
Log source category
process_creation

Known benign triggers

  • Legitimate use of SFTP with proxy commands for administration or networking tasks

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