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TrojanSpy.Win32.VIDAR.D

September 27, 2021
 Analysis by: Warren Adam Sto. Tomas
 ALIASES:

Trojan-Banker.UrSnif (Ikarus)

 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, Dropped by other malware

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 may be dropped by other malware.

It executes then deletes itself afterward.

  TECHNICAL DETAILS

File Size:

603,648 bytes

Memory Resident:

No

Initial Samples Received Date:

09 Aug 2021

Payload:

Connects to URLs/IPs, Drops files

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.

It may be dropped by the following malware:

Installation

This Trojan Spy drops the following files:

  • %ProgramData%\{Random characters}\{GUID}{Random characters}.zip (contains aggregated system information to be sent to C2)

(Note: %ProgramData% is a version of the Program Files folder where any user on a multi-user computer can make changes to programs. This contains application data for all users. This is usually C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit), or C:\Documents and Settings\All Users on Windows Server 2003(32-bit), 2000(32-bit) and XP.)

It creates the following folders:

  • %ProgramData%\{Random characters} (contains stolen information)

(Note: %ProgramData% is a version of the Program Files folder where any user on a multi-user computer can make changes to programs. This contains application data for all users. This is usually C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit), or C:\Documents and Settings\All Users on Windows Server 2003(32-bit), 2000(32-bit) and XP.)

It executes then deletes itself afterward.

Information Theft

Upon execution of the affected application, it gathers the following information:

  • Telegram session data
  • Cryptocurrency wallet data
  • Browser data (e.g. cookies, downloads, history, credentials, autofills, credit card data)
  • Date executed
  • Machine ID
  • GUID
  • HWID
  • Working path
  • Product name
  • Computer name
  • User name
  • Resolution
  • Operating system information
  • Keyboard layout
  • Datetime executed
  • RAM information
  • Processor information
  • Video card information
  • Running processes
  • Screenshot

Other Details

This Trojan Spy does the following:

  • It connects to the following URL to resolve its configuration:
    • https://prophefliloc.{BLOCKED}r.com/
    As of this moment, it received the following URL it will use to send its stolen information: {BLOCKED}.{BLOCKED}.2.239
  • It downloads the following normal files in %ProgramData% upon resolving its configuration:
    • freebl3.dll
    • mozglue.dll
    • msvcp140.dll
    • nss3.dll
    • softokn3.dll
    • vcruntime140.dll
    • msvcp140.dll

It terminates itself if any of the following computer name(s) are found in the affected system:

  • JohnDoe
  • HAL9TH

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

16.956.05

FIRST VSAPI PATTERN DATE:

09 Sep 2021

VSAPI OPR PATTERN File:

16.957.00

VSAPI OPR PATTERN Date:

10 Sep 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.XXPE50FFF048

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 4

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %ProgramData%\{Random characters}

Step 5

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.Win32.VIDAR.D. 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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