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BKDR_RMTSVC.U

April 25, 2017
 ALIASES:

Backdoor:Win32/Rmtsvc.C!bit (Microsoft)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 REPORTED INFECTION:

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware

This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

476,302 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

21 Apr 2017

Payload:

Executes files, Compromises system security

Arrival Details

This Backdoor 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 Backdoor injects codes into the following process(es):

  • explorer.exe

NOTES:

Once executed, a remote malicious user can access a web page hosted on the affected machine using Port 7778. This web page contains a control panel where a remote user can perform remote commands.

It has the following capaibilities:

  • Screen view
  • Fully control
  • Send Ctrl + Alt + Del
  • Set the clipboard
  • Get the clipboard
  • Run a program
  • Shutdown
  • Restart
  • Log off

Remote management

  • Telnet control
  • File management
  • Process list
  • Port list
  • Service list
  • The registry
  • FTP management

VIDC management

  • UPnP port mapping
  • Local port mapping
  • Remote port mapping
  • VIDC service management
  • Proxy service configuration
  • Configure import and export

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.354.05

FIRST VSAPI PATTERN DATE:

21 Apr 2017

VSAPI OPR PATTERN File:

13.355.00

VSAPI OPR PATTERN Date:

22 Apr 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 BKDR_RMTSVC.U. 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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