Analysis by: Sammy Chua
ALIASES:

Trojan:Win32/Gatak.DR (Microsoft); Trojan.Win32.Yakes.ilkh (Kaspersky); Trojan.Asprox.B (Symantec)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Canal de infección Downloaded from the Internet, Dropped by other malware

This Trojan may be unknowingly downloaded by a user while visiting malicious websites. It may be manually installed by a user.

  TECHNICAL DETAILS

Tamaño del archivo 808,257 bytes
Residente en memoria No
Fecha de recepción de las muestras iniciales 15 Jan 2015
Carga útil Drops files

Arrival Details

This Trojan may be unknowingly downloaded by a user while visiting malicious websites.

It may be manually installed by a user.

Installation

This Trojan drops and executes the following files:

  SOLUTION

Motor de exploración mínimo 9.700
Primer archivo de patrones de VSAPI 11.440.05
Primera fecha de publicación de patrones de VSAPI 27 Jan 2015
Versión de patrones OPR de VSAPI 11.441.00
Fecha de publicación de patrones OPR de VSAPI 28 Jan 2015

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Remove malware/grayware files dropped/downloaded by TROJ_DROPR.GTK. (Note: Please skip this step if the threats listed below have already been removed.)

Step 4

Scan your computer with your Trend Micro product to delete files detected as TROJ_DROPR.GTK. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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