Troj_Agent.GUK is a memory-resident Trojan that may be downloaded from remote sites by other malware. It may be downloaded from remote sites by TROJ_AGENT.QMN. It may arrive bundled with malware packages as a malware component. It may be downloaded unknowingly by a user when visiting malicious Web sites.

When executed, it drops its component .DLL file, which Trend Micro also detects as TROJ_AGENT.GUK.

It then attempts to access a certain Web site to download files. As of this writing, however, the said site is inaccessible.


Technical details can be found at this Trend Micro page.