SID 1:3012

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 RUX the Tick upload/execute arbitrary file

Rule Explanation

This event is generated when an attacker attempts to remotely upload and execute a file with the RUX the Tick trojan. Impact: If successful, the attacker would gain unauthorized access to an affected system, enabling him to upload and execute file on the machine. The attacker can use this function to upload additional backdoors to the victim's sytem and execute them. Details: When executed, RUX the Tick opens up its assigned port (default is 22222) for communication with the attacker. RUX the Tick has three functions: Get Windows Directory, Get System Directory, and Upload And Execute File. Get Windows Directory and Get System Directory are used for reconnaissance. Upload And Execute File is mainly used to upload and run other backdoors onto the victim's computer. Ease of Attack: Simple.

What To Look For

No information provided

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Ricky Macatee