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TrojanSpy.Win32.VIDAR.CFJ

August 22, 2023
 Analysis by: Melvin Jhun Palbusa
 Modified by: Melvin Jhun Palbusa
 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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.

  TECHNICAL DETAILS

File Size:

629531712 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

17 Aug 2023

Payload:

Downloads files, Drops files, Connects to URLs/IPs, Deletes files, Steals information

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.

Installation

This Trojan Spy adds the following folders:

  • %ProgramData%\{Random Numbers}\autofill
  • %ProgramData%\{Random Numbers}\History
  • %ProgramData%\{Random Numbers}\Downloads
  • %ProgramData%\{Random Numbers}\CC

(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 drops the following files:

  • %ProgramData%\freebl3.dll
  • %ProgramData%\mozglue.dll
  • %ProgramData%\msvcp140.dll
  • %ProgramData%\nss3.dll
  • %ProgramData%\softokn3.dll
  • %ProgramData%\sqlite3.dll
  • %ProgramData%\vcruntime140.dll
  • %ProgramData%\{Random numbers}-wal.txt → Stolen information
  • %ProgramData%\{Random numbers}-shm.txt → Stolen information
  • %ProgramData%\{Random numbers}-journal.txt → Stolen information
  • %ProgramData%\{Random Numbers}\autofill\{Random numbers}.txt → Stolen information
  • %ProgramData%\{Random Numbers}\History\{Random Numbers}.txt → Stolen information
  • %ProgramData%\{Random Numbers}\Downloads\{Random Numbers}.txt → Stolen information
  • %ProgramData%\{Random Numbers}\CC\{Random Numbers}.txt → Stolen information
  • %ProgramData%\{Random Numbers}\screenshot.jpg

(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 adds the following processes:

  • %System%\cmd.exe /c timeout /t 6 & del /f /f "{Malware File path}\{Malware Filename}" & exit

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

Other System Modifications

This Trojan Spy deletes the following files:

  • %ProgramData%\{Random numbers}-wal.txt → After Exfiltration
  • %ProgramData%\{Random numbers}-shm.txt → After Exfiltration
  • %ProgramData%\{Random numbers}-journal.txt → After Exfiltration
  • %ProgramData%\{Random Numbers}\autofill\{Random numbers}.txt → After Exfiltration
  • %ProgramData%\{Random Numbers}\History\{Random Numbers}.txt → After Exfiltration
  • %ProgramData%\{Random Numbers}\Downloads\{Random Numbers}.txt → After Exfiltration
  • %ProgramData%\{Random Numbers}\CC\{Random Numbers}.txt → After Exfiltration
  • %ProgramData%\{Random Numbers}\screenshot.jpg → After Exfiltration

(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 deletes the following folders:

  • %ProgramData%\{Random Numbers}\autofill → After Exfiltration
  • %ProgramData%\{Random Numbers}\History → After Exfiltration
  • %ProgramData%\{Random Numbers}\Downloads → After Exfiltration
  • %ProgramData%\{Random Numbers}\CC → After Exfiltration

(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.)

Download Routine

This Trojan Spy connects to the following URL(s) to download its configuration file:

  • {BLOCKED}e/odyssey_tg:443
  • https://{BLOCKED}ommunity.com/profiles/76561199541261200
  • https://{BLOCKED}.{BLOCKED}.{BLOCKED}.95/64e1125059a8138bb4cd9958d5e9baa4h
  • https://{BLOCKED}.{BLOCKED}.{BLOCKED}.95/pack.zip

Information Theft

This Trojan Spy gathers the following data:

  • Browser Data(e.g.Cookies, History, Downloads, Bookmarks, Credentials, Credit Card data, Autofills):
    • Mozilla Firefox
    • Pale Moon
    • Opera Stable
    • Opera Crypto Stable
    • Opera GX
    • Google Chrome
    • Chromium
    • Amigo
    • Torch
    • Vivaldi
    • Comodo
    • Epic Privacy Browser
    • CocCoc
    • Brave
    • CentBrowser
    • 7Star
    • TorBro
    • Chedot
    • Microsoft Edge
    • Microsoft Edge Canary
    • Microsoft Edge Beta
    • Microsoft Edge Dev
    • 360Browser
    • QQBrowser
    • CryptoTab Browser
    • Authy Desktop
    • Thunderbird
  • Browser Extension:
    • Slides
    • Docs
    • Google Drive
    • Youtube
    • Sheets
    • Gmail
    • Trezor Password Manager
    • Authenticator
    • Authy
    • EOS Authenticator
    • GAuth Authenticator
    • Microsoft Autofill
    • Bitwarden
    • KeePass Tusk
    • KeePassXC-Browser
  • CryptoCurrency Browser Extension:
    • TronLink
    • MetaMask
    • Binance Wallet
    • Yoroi
    • Nifty Wallet
    • Coinbase Wallet
    • Guarda Wallet
    • cjelfplplebdjjenllpjcblmjkfcffne
    • iWallet
    • MEW Wallet
    • Ronin Wallet
    • NeoLine
    • CLV Wallet
    • Liquality Wallet
    • Station Wallet
    • Keplr
    • Sollet Wallet
    • Aura Wallet
    • Polymesh Wallet
    • ICONex
    • Coin98 Wallet
    • EVER Wallet
    • KardiaChain Wallet
    • Rabby Wallet
    • Phantom
    • Brave Wallet
    • Oxygen - Atomic Crypto Wallet
    • Pali Wallet
    • aodkkagnadcbobfpggfnjeongemjbjca
    • XDEFI Wallet
    • pfcbjknijpeeillifnkikgncikgfhdo
    • MultiversX DeFi Wallet
    • Keeper Wallet
    • Solflare Wallet
    • Cyano Wallet
    • KHC Wallet
    • TezBoz - Tezos Wallet
    • Temple - Tezos Wallet
    • Goby
    • Tron Wallet and Explorer - Tronium
    • Trust Wallet
    • Exodus Web3 Wallet
    • Braavos Smart Wallet
    • Enkrypt: Multichain Crypto Wallet
    • OKX Wallet
    • Sender Wallet
    • Hashpack
    • Eternl
    • Gero Wallet
    • Pontem Aptos Wallet
    • Petra Aptos Wallet
    • Martian Wallet for Sui and Aptos
    • Finnie
    • Leap Terra Wallet
  • Crypto Wallet Data:
    • Ethereum
    • Electrum-LTC
    • Exodus
    • ElectronCash
    • MultiDoge
    • Jaxx
    • Atomic
    • Binance
    • Coinomi
    • Daedalus Mainnet
    • Blockstream Green
    • WalletWasabi
    • Electrum
    • Bitcoin
    • Dogecoin
    • Raven
    • Ledger Live
    • Chia
  • System Information:
    • Time and Date
    • Version
    • MachineID
    • GUID
    • HWID
    • Malware File Path
    • Work Directory
    • Product Name
    • OS Version and Architecture
    • Install date of OS
    • Antivirus Products
    • Computer Name
    • User Name
    • Dsiplay Resolution
    • Display Language
    • Keyboard Language
    • Local Time
    • Time Zone
  • Hardware Information:
    • Processor
    • # of Core
    • # of Threads
    • RAM
    • Video Card
  • Runnning Processes
  • Installed Software and version
  • Screenshot of current display
  • SFTP/FTP Clients (e.g. Host, Port, User, Pass, Recent Servers):
    • WinSCP
    • FileZilla

Stolen Information

This Trojan Spy sends the gathered information via HTTP POST to the following URL:

  • https://{BLOCKED}.{BLOCKED}.{BLOCKED}.95

Other Details

This Trojan Spy does the following:

  • It terminates itself if any of the following computer name(s) are found in the affected system:
    • JohnDoe
    • HAL9TH
  • Drops files in %ProgramData% directory with random names containing the stolen informations then deletes it after exfiltration
  • It downloads the following archive in %ProgramData% upon resolving its configuration:
    • pack.zip
    which contains the following normal files:
    • freebl3.dll
    • mozglue.dll
    • msvcp140.dll
    • nss3.dll
    • softokn3.dll
    • vcruntime140.dll
    • msvcp140.dll

(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.)

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

18.608.08

FIRST VSAPI PATTERN DATE:

02 Aug 2023

VSAPI OPR PATTERN File:

18.609.00

VSAPI OPR PATTERN Date:

03 Aug 2023

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

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 3

Search and delete this file

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.  
  • %ProgramData%\freebl3.dll
  • %ProgramData%\mozglue.dll
  • %ProgramData%\msvcp140.dll
  • %ProgramData%\nss3.dll
  • %ProgramData%\softokn3.dll
  • %ProgramData%\sqlite3.dll
  • %ProgramData%\vcruntime140.dll

Step 4

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