SID 1:63806

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.Grandoreiro Outbound CNC connection

Rule Explanation

This rule detects a crafted HTTP request commonly used by the Grandoreiro strain of malware

What To Look For

This rule detects a crafted HTTP request commonly used by the Grandoreiro strain of malware

Known Usage

Attacks/Scans seen in the wild

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group