Analysis by: Maria Emreen Viray
ALIASES:

Trojan:Win32/Dridex.NN!MTB (MICROSOFT); HEUR:Trojan-Downloader.Win32.Cridex.gen (KASPERSKY)

 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet

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

It retrieves specific information from the affected system.

It connects to certain websites to send and receive information.

  TECHNICAL DETAILS

File Size: 803,840 bytes
File Type: DLL
Memory Resident: Yes
Initial Samples Received Date: 28 Feb 2021
Payload: Connects to URLs/IPs

Arrival Details

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

Information Theft

This Trojan Spy retrieves the following information from the affected system:

  • Computer Name
  • User Name
  • System Information:
    • OS Install Date
    • Volume Information
    • Processor Architecture
    • Number of Processors
    • Processor Type
    • Page Size
    • Minimum Application Address
  • Installed Applications:
    • Name
    • Version
  • Environment Variables set within the System

Other Details

This Trojan Spy connects to the following website to send and receive information:

  • {BLOCKED}.{BLOCKED}.87.138:443
  • {BLOCKED}.{BLOCKED}.115.153:8172
  • {BLOCKED}.{BLOCKED}.29.248:6516

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 16.566.06
FIRST VSAPI PATTERN DATE: 28 Feb 2021
VSAPI OPR PATTERN File: 16.567.00
VSAPI OPR PATTERN Date: 01 Mar 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.XXPE50FFF041

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

Identify and terminate files detected as TrojanSpy.Win32.DRIDEX.TIAOABDG

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.Win32.DRIDEX.TIAOABDG. 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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