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VBS_GOLROTED.AUSSKN

March 07, 2017
 Analysis by: Michael Jay Villanueva
 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

Infection Channel:

Dropped by other malware


This Trojan may be dropped by other malware.

It does not have any propagation routine.

It does not have any backdoor routine.

  TECHNICAL DETAILS

File Size:

384 bytes

Memory Resident:

No

Initial Samples Received Date:

02 Mar 2017

Payload:

Executes files

Arrival Details

This Trojan may be dropped by the following malware:

  • TSPY_GOLROTED.AUSSKN

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Other Details

This Trojan does the following:

  • This malware is capable of executing the dropped copy of a malware detected as TSPY_GOLROTED.AUSSKN, using these commands/codes:
    • {Shell Object Name/Variable}.ShellExecute "%User Temp%\subfolder\filename.exe", "", "", "", 1

(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.)

NOTES:

This malware is commonly dropped in %User Startup% directory, to serve as an Autostart Technique of a malware.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.256.04

FIRST VSAPI PATTERN DATE:

04 Mar 2017

VSAPI OPR PATTERN File:

13.257.00

VSAPI OPR PATTERN Date:

05 Mar 2017

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 the malware/grayware file dropped/downloaded by VBS_GOLROTED.AUSSKN. (Note: Please skip this step if the threat(s) listed below have already been removed.)

     
    • TSPY_GOLROTED.AUSSKN

Step 4

Scan your computer with your Trend Micro product to delete files detected as VBS_GOLROTED.AUSSKN. 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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