Msiexec.EXE Initiated Network Connection Over HTTP

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About the rule

Rule Type

Standard

Rule Description

Detects a network connection initiated by an "Msiexec.exe" process over port 80 or 443. Adversaries might abuse "msiexec.exe" to install and execute remotely hosted packages. Use this rule to hunt for potentially anomalous or suspicious communications.

Severity

Attention

Rule Requirement

Criteria

Action1: actionname = "sa_network_connection" AND IS_INITIATED = "true" AND PROCESSNAME endswith "\msiexec.exe" AND DEST_PORT = "80,443" select Action1.HOSTNAME,Action1.MESSAGE,Action1.USERNAME,Action1.PROCESSNAME,Action1.DESTINATIONHOST,Action1.DESTINATION_IPV6,Action1.DEST_IP,Action1.SOURCEHOST,Action1.SOURCE_IP,Action1.SOURCE_IPV6

Detection

Execution Mode

realtime

Log Sources

Windows

Author

frack113