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TrojanSpy.Win32.GOZI.AB

April 12, 2019
 PLATFORM:

Windows

 OVERALL RISK RATING:
 REPORTED INFECTION:

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted: No

  • 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.

It accesses websites to download files. This action allows this malware to possibly add other malware on the affected computer. As of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

221,696 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

10 Apr 2019

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 adds the following processes:

  • iexplore.exe

It injects codes into the following process(es):

  • iexplore.exe

Download Routine

This Trojan Spy accesses websites to download the following files:

  • http://{BLOCKED}nii.com/images/{random string}.avi
  • http://{BLOCKED}nii.com/favicon.ico
  • http://{BLOCKED}rry.com/images/{random string}.avi
  • http://{BLOCKED}rry.com/favicon.ico
  • http://{BLOCKED}ioh.com/images/{random string}.avi
  • http://{BLOCKED}ioh.com/favicon.ico

As of this writing, the said sites are inaccessible.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

14.931.00

FIRST VSAPI PATTERN DATE:

10 Apr 2019

VSAPI OPR PATTERN File:

14.932.00

VSAPI OPR PATTERN Date:

11 Apr 2019

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 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

Terminate this process using Process Explorer

[ Learn More ]
If you still cannot terminate the malware/grayware process because it is not displayed in Process Explorer, please restart your computer in Safe Mode. You may refer to this page for details.

Step 4

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.Win32.GOZI.AB. 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 the following Trend Micro Support pages for more information:


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