Suspicious disablement of the Windows Firewall

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	7 Days
Required Data	XDR Agent
ATT&CK Tactic	Defense Impairment (TA0112)
ATT&CK Technique	Disable or Modify System Firewall (T1686)
Severity	Low

Description

The Windows Firewall has been disabled. Malware may turn it off to exfiltrate data and communicate with C2 servers.

Attacker's Goals

An attacker may turn the firewall off to exfiltrate data and communicate with C2 servers.

Investigative actions

• Check whether the command line executed is benign or normal for the host and/or user performing it.
• Investigate the endpoint to determine if the process is legitimately disabling the firewall.