Analysis by: Nikko Tamana
ALIASES:

W32/Krypt.HAHA!tr (Fortinet), Trojan-PWS.Win32.Tepfer (Ikarus), TrojanDownloader:Win32/Waledac.R (Microsoft), W32.Waledac.D!gen3 (Norton)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • 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: 43,008 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 14 Feb 2013

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 accesses the following websites to download files:

  • http://{BLOCKED}ol.ru/rasta01.exe
  • http://{BLOCKED}op.ru/rasta01.exe

It saves the files it downloads using the following names:

  • %Temp%\temp{random number}.exe

(Note: %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp.)