TROJ_BEBLOH.NAL

January 26, 2016
 Analysis by: Janus Agcaoili
 ALIASES:

Troj/Shiotob-T (Sophos)

 PLATFORM:

Windows

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

  • 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.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size:

228,666 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

21 Jan 2016

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.

Other System Modifications

This Trojan adds the following registry entries:

HKEY_CURRENT_USER\Software\{Random 8 Characters}
{null} = "{Hexadecimal Values}"

HKEY_CURRENT_USER\Software\{Random 8 Characters}
{Random 8 Characters} = "0"

Other Details

This Trojan connects to the following URL(s) to check for an Internet connection:

  • www.google.com

It connects to the following possibly malicious URL:

  • {Random Domain Address}.com/set/
  • {Random Domain Address}.net/set/

It deletes itself after execution.

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

12.296.05

FIRST VSAPI PATTERN DATE:

25 Jan 2016

VSAPI OPR PATTERN File:

12.297.00

VSAPI OPR PATTERN Date:

26 Jan 2016

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

Restart in Safe Mode

[ Learn More ]

Step 4

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.

  • In HKEY_CURRENT_USER\Software
    • {Random 8 Characters}

Step 5

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_BEBLOH.NAL. 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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