TROJ_ACTIVEHIJ.B

This Trojan comes with a .DLL file which is executed when Microsoft Word is successfully exploited.

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It does not have any propagation routine.

It does not have any backdoor routine.

It does not have any downloading capability.

It does not have any information-stealing capability.

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Download Routine

This Trojan does not have any downloading capability.

Information Theft

This Trojan does not have any information-stealing capability.

NOTES:

Other Details

It takes advantage of the following software vulnerability:

• Vulnerabilities in Microsoft Office Could Allow Remote Code Execution

More information on this vulnerability can be found below:

• Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (2587634) (CVE-2011-1980)

This specially-crafted .DOC file takes advantage of vulnerability in certain versions of Microsoft Office to execute a file named imeshare.dll in the malware's current folder. After successfully executing the .DLL file, it then deletes the file and drops a non-malicious file named, Thumbs.db, in the malware's current folder.

As a result, malicious routines of the .DLL file are then exhibited on the affected system.

The said .DLL file is detected by Trend Micro as TROJ_MOONDRP.A.

It does not have rootkit capabilities.