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LNK_DORKBOT.SMF

September 20, 2017
 Analysis by: John Kevin Sanchez
 PLATFORM:

Windows

 OVERALL RISK RATING:
 REPORTED INFECTION:

  • 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 may be dropped by other malware.

It is a component of other malware.

It is used to load and execute a file.

  TECHNICAL DETAILS

File Size:

876 bytes

File Type:

LNK

Initial Samples Received Date:

01 Feb 2017

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.

It may be dropped by the following malware:

  • WORM_DORKBOT family

Installation

This Trojan is a component of other malware.

Other Details

This Trojan is used to load and execute the following file:

  • {Malware Path}\AntiUsbShortCut\AntiUsb.exe
  • {Malware Path}\AntiUsbShortCut\AntiUsbShortCut.zip

NOTES:
This file is a component of WORM_DORKBOT malware family. It is a shortcut file that executes its malware component using cmd.exe.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.194.04

FIRST VSAPI PATTERN DATE:

01 Feb 2017

VSAPI OPR PATTERN File:

13.195.00

VSAPI OPR PATTERN Date:

02 Feb 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

Scan your computer with your Trend Micro product to delete files detected as LNK_DORKBOT.SMF. 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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