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Trojan.MSIL.DLOADR.BU

March 31, 2021
 Analysis by: Clive Fuentebella
 ALIASES:

a variant of MSIL/TrojanDownloader.Agent.HNP trojan (NOD32)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet

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 does not have any propagation routine.

It does not have any backdoor routine.

As of this writing, the said sites are inaccessible.

It does not have any information-stealing capability.

  TECHNICAL DETAILS

File Size:

42,112 bytes

File Type:

EXE

Memory Resident:

Yes

Payload:

Connects to URLs/IPs, Downloads files

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.

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Rootkit Capabilities

This Trojan does not have rootkit capabilities.

Download Routine

This Trojan accesses the following websites to download files:

  • http://{BLOCKED}fanclub.com/liverpool-fc-news/features/steven-gerrard-liverpool-future-dalglish--goal-8DAB36B523D35BE6A6D2D638D1D56C6E.html
  • http://{BLOCEKD}fanclub.com/liverpool-fc-news/features/steven-gerrard-liverpool-future-dalglish--goal-F402400C9C326155269B2B8CD562B394.html

As of this writing, the said sites are inaccessible.

Information Theft

This Trojan does not have any information-stealing capability.

Other Details

This Trojan does the following:

  • The downloaded file will be loaded into and executed from the memory.
  • The sample will connect repeatedly to the malicious URL until a response is sent to the infected machine.

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

16.628.03

FIRST VSAPI PATTERN DATE:

31 Mar 2021

VSAPI OPR PATTERN File:

16.629.00

VSAPI OPR PATTERN Date:

01 Apr 2021

Step 1

Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:

    • Troj.Win32.TRX.XXPE50FFF042

Step 2

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 3

Scan your computer with your Trend Micro product to delete files detected as Trojan.MSIL.DLOADR.BU. 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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