Troj_Virux.A is a Trojan that arrives as a malicious file that has been infected by PE_VIRUT.BO. The infected files may be downloaded from the several malicious Web sites.

Upon execution, it attempts to access certain malicious Web sites. However, the said sites are inaccessible as of this writing.

It terminates itself after execution.

Technical details can be found at this Trend Micro page.