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 Unix.Spyware.WellMess variant outbound cnc attempt

Rule Explanation

This rule looks for HTTP traffic associated with Unix.Spyware.WellMess or Dos.Spyware.WellMess samples.

What To Look For

This rule fires on outbound traffic by a Unix.Spyware.WellMess or Dos.Spyware.WellMess infected host.

Known Usage

No public information

False Positives

No known false positives


Cisco Talos Intelligence Group

MITRE ATT&CK Framework

Tactic: Command and Control

Technique: Standard Cryptographic Protocol

For reference, see the MITRE ATT&CK vulnerability types here:

Additional Links

Rule Vulnerability


Not Applicable

CVE Additional Information