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 Trojan-dropper.irc.tkb variant outbound connection lordhack

Rule Explanation

This event is generated when activity relating to the "trojan-dropper.irc.tkb" Trojan Horse program is detected. Impact: Possible theft of data and control of the targeted machine leading to a compromise of all resources the machine is connected to. Details: Trojan horse programs can be used by an attacker to steal data from the infected machine, they can also be used to control the infected host. This event indicates that activity relating to the trojan horse program trojan-dropper.irc.tkb has been detected in network traffic. In particular this event indicates that the software detected is a Remote Access Trojan. RAT programs allow full control of the target system using a client on the attackers machine that connects to the server on the client host. Ease of Attack: This is Trojan activity, the target machine may already be compromised.

What To Look For

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Alex Kirk Nigel Houghton

MITRE ATT&CK Framework

Tactic:

Technique:

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

Additional Links

Rule Vulnerability

CVE Additional Information