Rule Category

MALWARE-CNC -- Snort has detected a Comand and Control (CNC) rule violation, most likely for commands and calls for files or other stages from the control server. The alert indicates a host has been infiltrated by an attacker, who is using the host to make calls for files, as a call-home vector for other malware-infected networks, for shuttling traffic back to bot owners, etc.

Alert Message

MALWARE-CNC Win.Trojan.Qakbot variant outbound connection

Rule Explanation

This rule is looking for the initial C2 communication sent via TCP port 65400.

What To Look For

This alert signifies Command & Control (C2) communication from a computer infected with Qakbot to a C2 service.

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

MITRE ATT&CK Framework

Tactic: Command and Control

Technique: Custom Command and Control Protocol

For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org

Additional Links

Rule Vulnerability

N/A

Not Applicable

CVE Additional Information