W2KM_DLOADR.YYSZX

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.

However, as of this writing, the said sites are inaccessible.

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.

Download Routine

This Trojan saves the files it downloads using the following names:

• %User Temp%\{random number}.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://{BLOCKED}ink.com/uk1ej-kt757-md/
• http://{BLOCKED}anitz.com/gqj5ijg-y250-ex/
• http://{BLOCKED}ontor.org/b8hcg-o392-gj/
• http://{BLOCKED}haelis.com/uf1t-g513-xa/
• http://{BLOCKED}mbatzone.com/wse9o-jr465-pguf/

However, as of this writing, the said sites are inaccessible.