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.Ransomware.GandCrab outbound connection

Rule Explanation

This event is generated when an outbound connection from Win.Trojan.GandCrab is observed. Impact: Potential infection of host. Details: This rule triggers on the initial C2 traffic observed from Win.Trojan.GandCrab. Upon infection, an HTTP Post request is observed sending important data back to the C2 server. If dropped, encryption of the drive(s) will fail. Ease of Attack:

What To Look For

No information provided

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

Rule Groups

No rule groups

CVE

None

Additional Links

Rule Vulnerability

No information provided

CVE Additional Information

This product uses data from the NVD API but is not endorsed or certified by the NVD.

None