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W2KM_DLOADR.XTUD

June 23, 2015
 Analysis by: RonJay Kristoffer Caragay
 ALIASES:

TrojanDownloader:W97M/Donoff (Microsoft); W97M.Downloader (Symantec); Trojan-Downloader.MSWord.Agent.mf (Kaspersky); VBA/TrojanDownloader.Agent.UM (ESET-NOD320; Trojan.Agent.VBS.BK (BitDefender)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan arrives as attachment to mass-mailed email messages.

  TECHNICAL DETAILS

File Size:

51,200 bytes

File Type:

DOC

Initial Samples Received Date:

15 Jun 2015

Arrival Details

This Trojan arrives as attachment to mass-mailed email messages.

Download Routine

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

  • %User Temp%\ginkan86.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://www.{BLOCKED}ntjes.info/34/44.exe