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Trojan.HTML.DLOADR.VWEF

July 15, 2019
 Analysis by: Maureen Reyes
 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:

Dropped by other malware, 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 file infection routine.

It does not have any propagation routine.

It does not have any backdoor routine.

It does not have any information-stealing capability.

  TECHNICAL DETAILS

File Size:

18,497 bytes

File Type:

CHM

Memory Resident:

Yes

Initial Samples Received Date:

11 Jul 2019

Payload:

Connects to URLs/IPs, Displays windows

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.

Infection Points

This Trojan does not have any file infection routine.

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:

  • https://bit.ly/{BLOCKED}x, which redirects to:
    http://data.{BLOCKED}ews.club:8080/open?id=mFUbNFblIJmSb9c%2BJEXIr5pN2CfgrYUlLghqsNVHd%2Bo%3D

Information Theft

This Trojan does not have any information-stealing capability.

Other Details

This Trojan does the following:

  • Displays the following window:

NOTES:

However, as of this writing, the said sites are inaccessible.

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

15.230.02

FIRST VSAPI PATTERN DATE:

12 Jul 2019

VSAPI OPR PATTERN File:

15.231.00

VSAPI OPR PATTERN Date:

13 Jul 2019

Step 1

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 2

Scan your computer with your Trend Micro product to delete files detected as Trojan.HTML.DLOADR.VWEF. 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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