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TSPY_DRIDEX.YYSOP

August 08, 2017
 Analysis by: Joselyn Canuela
 ALIASES:

Trojan-PSW.Win32.Fareit.bgqi (Kaspersky), PWS:Win32/Fareit (Microsoft), Downloader.Ponik (Symantec)

 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan Spy 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:

203,264 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

20 Oct 2015

Arrival Details

This Trojan Spy 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 Spy drops and executes the following files:

  • %User Temp%\{random numbers}.bat -> batch file to delete itself

(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 Spy connects to the following possibly malicious URL:

  • http://{BLOCKED}ofttold.ru/gate.php
  • http://{BLOCKED}nkele.ru/gate.php
  • http://{BLOCKED}slohat.ru/gate.php
  • http://{BLOCKED}computers.co.uk/host.exe
  • http://{BLOCKED}azaar.in/media/system/host.exe
  • http://{BLOCKED}tex.com/media/system/host.exe
  • http://{BLOCKED}r-it.co.uk