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InformationalSplunk security contentMaria Jose Erquiaga +1

Socat Remote TCP Connection with Local Echo Disabled

The following analytic detects execution of the socat utility with a remote TCP or OpenSSL connection and local terminal echo disabled. This configuration may be used for interactive terminal sessions, password…

Description

The following analytic detects execution of the socat utility with a remote TCP or OpenSSL connection and local terminal echo disabled. This configuration may be used for interactive terminal sessions, password handling, automation, or network debugging. When observed in an unexpected context, such as execution by an unusual parent process or connection to an untrusted endpoint, it may indicate suspicious remote access activity.

Detection logic

Detection requirements

Platform
ContainersESXiIaaSIdentity ProviderLinuxmacOSNetwork DevicesOffice SuiteSaaSWindows

The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.

Log source category
osquery_resultssysmon_for_linux_eventid_1

Known benign triggers

  • Developers and network engineers may use socat with local echo disabled for legitimate TCP debugging, protocol testing, terminal handling, or troubleshooting.

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