W2KM_BARTALEX.SMO

July 29, 2015
 Analysis by: Anthony Joe Melgarejo
 ALIASES:

TrojanDownloader:W97M/Adnel (Microsoft), W97M.Downloader (Symantec), W97M/Bartallex.n (McAfee)

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

  TECHNICAL DETAILS

File Size:

78,336 bytes

File Type:

DOC

Initial Samples Received Date:

18 Jul 2015

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.

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}nneton-quebec.com/components/com_sexycontactform/fileupload/files/78672738612836.txt
  • http://{BLOCKED}ions.com/wp-includes/js/tinymce/themes/advanced/skins/highcontrast/78672738612836.txt

It drops the following file(s)/component(s):

  • %User Temp%\dikopirt.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.)