TROJ_UPATRE.YYSHL

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 deletes the initially executed copy of itself.

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.

Installation

This Trojan drops the following files:

• %User Temp%\V99E08.txt
• %User Temp%\vatog3.exe
• %User Temp%\viagra.pdf
• %User Temp%\{random}.exe

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Other Details

This Trojan connects to the following possibly malicious URL:

• http://checkip.dyndns.org/
• http://{BLOCKED}oot.de/gfx/din-n.pdf
• http://{BLOCKED}on.de/files/file/2010/din-n.pdf
• http://{BLOCKED}.{BLOCKED}.9.129:{port}/0403no11/{hostname}/{data}

It deletes the initially executed copy of itself