PE_TRATS.A-O

To get a one-glance comprehensive view of the behavior of this malware, refer to the Behavior Diagram shown below.

This file infector may be dropped by other malware. It may also be downloaded unknowingly by a user when visiting malicious Web sites.

It drops another malware detected by Trend Micro as TROJ_TRATS.A.

It targets EXE files for infection. Its infection routine involves sandwiching a target file between its code and TROJ_TRATS.A's code. When an infected file is executed, normal file operation is still performed but, at the same time, the infection cycle is triggered all over again.

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