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TrojanSpy.Win32.VIDAR.CFC

November 28, 2022
 Analysis by: Francesca Villasanta
 ALIASES:

Trojan.Win32.Chapak.endb (KASPERSKY)

 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

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 does not have any propagation routine.

It does not have any backdoor routine.

It gathers certain information on the affected computer.

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

  TECHNICAL DETAILS

File Size:

343,040 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

09 Sep 2020

Payload:

Connects to URLs/IPs, Deletes files, Steals information, Terminates processes

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 drops the following files:

  • where gathered information is archived before exfiltrated:
    • %ProgramData%\{Random numbers}\_{Random numbers}.zip
  • where gathered information is stored:
    • %ProgramData%\{Random numbers}\outlook.txt
    • %ProgramData%\{Random numbers}\passwords.txt
      • where gathered information is stored:
      • %ProgramData%\{Random numbers}\outlook.txt
      • %ProgramData%\{Random numbers}\passwords.txt
      • %ProgramData%\{Random numbers}\screenshot.jpg
      • %ProgramData%\{Random numbers}\system.txt
      • %ProgramData%\{Random numbers}\temp
      • %ProgramData%\{Random numbers}\autofill\{stolen information}
      • %ProgramData%\{Random numbers}\cc\{stolen information}
      • %ProgramData%\{Random numbers}\cookies\{stolen information}
      • %ProgramData%\{Random numbers}\crypto\{Cryptocurrency name}\{stolen wallet information}
    • %ProgramData%\{Random numbers}\screenshot.jpg
    • %ProgramData%\{Random numbers}\system.txt
    • %ProgramData%\{Random numbers}\temp
    • %ProgramData%\{Random numbers}\autofill\{stolen information}
    • %ProgramData%\{Random numbers}\cc\{stolen information}
    • %ProgramData%\{Random numbers}\cookies\{stolen information}
    • %ProgramData%\{Random numbers}\crypto\{Cryptocurrency name}\{stolen wallet 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 creates the following folders:

  • where stolen information is stored:
    • %ProgramData%\{Random numbers}
    • %ProgramData%\{Random numbers}\cc
    • %ProgramData%\{Random numbers}\autofill
    • %ProgramData%\{Random numbers}\cookies
    • %ProgramData%\{Random numbers}\crypto

(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.)

Other System Modifications

This Trojan Spy deletes 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}\outlook.txt
  • %ProgramData%\{Random numbers}\passwords.txt
  • %ProgramData%\{Random numbers}\screenshot.jpg
  • %ProgramData%\{Random numbers}\system.txt
  • %ProgramData%\{Random numbers}\temp
  • %ProgramData%\{Random numbers}\autofill\{stolen information}
  • %ProgramData%\{Random numbers}\cc\{stolen information}
  • %ProgramData%\{Random numbers}\cookies\{stolen information}
  • %ProgramData%\{Random numbers}\crypto\{Cryptocurrency name}\{stolen wallet 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 deletes the following folders:

  • after exfiltration:
    • %ProgramData%\{random numbers}
    • %ProgramData%\{random numbers}\autofill
    • %ProgramData%\{random numbers}\cc
    • %ProgramData%\{random numbers}\cookies
    • %ProgramData%\{random numbers}\crypto

(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.)

Propagation

This Trojan Spy does not have any propagation routine.

Backdoor Routine

This Trojan Spy does not have any backdoor routine.

Rootkit Capabilities

This Trojan Spy does not have rootkit capabilities.

Process Termination

This Trojan Spy terminates the following malware-related processes:

  • /c taskkill /pid {Process ID} & erase {MalwarePath}\{Malware Name} & RD /S /Q %ProgramData%\{Random numbers}\* & exit

(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 component file(s):

  • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/freebl3.dll
  • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/mozglue.dll
  • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/msvcp140.dll
  • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/nss3.dll
  • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/softokn3.dll
  • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/sqlite3.dll
  • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/vcruntime40.dll

Information Theft

This Trojan Spy gathers the following information on the affected computer:

  • Browser data (e.g. cookies, credentials, autofills, credit card data)
    • Google Chrome
    • Chromium
    • Kometa
    • Amigo
    • Torch
    • Orbitum
    • Comodo Dragon
    • Nichrome
    • Maxthon5
    • Sputnik
    • EPB
    • Vivaldi
    • CocCoc Browser
    • Uran Browser
    • QIP Surf
    • Cent
    • Elements Browser
    • TorBro
    • Microsoft Edge
    • CryptoTab
    • Brave
    • Opera
    • Mozilla Firefox
    • Pale Moon
    • Waterfox
    • Cyberfox
    • BlackHawk
    • IceCat
    • KMeleon
    • Thunderbird
  • Email credentials:
    • Outlook
  • Cryptocurrency Wallet data
    • Anoncoin
    • BBQCoin
    • Bitcoin
    • DashCore
    • devcoin
    • digitalcoin
    • ElectronCash
    • Electrum
    • Electrum-LTC
    • Ethereum
    • Exodus
    • Florincoin
    • Franko
    • Freicoin
    • GoldCoinGLD
    • Infinitecoin
    • IOCoin
    • Ixcoin
    • jaxx
    • Litecoin
    • Megacoin
    • Mincoin
    • MultiDoge
    • Namecoin
    • Primecoin
    • Terracoin
    • YACoin
    • Zcash
  • System Information
    • OS Version and Architecture
    • Username
    • Computer name
    • System Language
    • Machine ID
    • GUID
    • Domain Name
    • Workgroup
    • Keyboard Languages
  • Hardware Information
    • Processor
    • # of Logical Processors
    • Videocard
    • Display resolution
    • RAM
    • If laptop or desktop
  • Local time & zone
  • Network Information
    • IP Address
    • Country
  • Installed software & version
  • Screenshot of current display

Other Details

This Trojan Spy does the following:

  • This Trojan Spy connects to the following website to send and receive information:
    • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz
  • It accesses the following websites to download its configuration/component files:
    • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/freebl3.dll
    • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/mozglue.dll
    • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/msvcp140.dll
    • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/nss3.dll
    • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/softokn3.dll
    • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/sqlite3.dll
    • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/vcruntime140.dll
    • http://{BLOCKED}3g7u3EO07WT42n7f4vIn5fZH.biz/main.php {configuration to collect particular files}
  • It terminates itself if any of the user default language identifiers is found:
    • Kazakh (Kazakhstan)
    • Russian (Russia)
    • Ukrainian (Ukraine)
    • Belarusian (Belarus)
    • Uzbek - Latin (Uzbekistan)
    • Azeri - Cyrillic (Azerbaijan)

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

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

  • HAL9TH
    If true, checks if username is
    • JohnDoe

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

17.944.01

FIRST VSAPI PATTERN DATE:

17 Nov 2022

VSAPI OPR PATTERN File:

17.945.00

VSAPI OPR PATTERN Date:

18 Nov 2022

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.XXPE50FFF062

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 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%\{Random numbers}\_{Random numbers}.zip
  • %ProgramData%\freebl3.dll
  • %ProgramData%\mozglue.dll
  • %ProgramData%\msvcp140.dll
  • %ProgramData%\nss3.dll
  • %ProgramData%\softokn3.dll
  • %ProgramData%\sqlite3.dll
  • %ProgramData%\vcruntime140.dll
  • %ProgramData%\{Random numbers}\outlook.txt
  • %ProgramData%\{Random numbers}\passwords.txt
  • %ProgramData%\{Random numbers}\screenshot.jpg
  • %ProgramData%\{Random numbers}\system.txt
  • %ProgramData%\{Random numbers}\temp
  • %ProgramData%\{Random numbers}\autofill\{stolen information}
  • %ProgramData%\{Random numbers}\cc\{stolen information}
  • %ProgramData%\{Random numbers}\cookies\{stolen information}
  • %ProgramData%\{Random numbers}\crypto\{Cryptocurrency name}\{stolen wallet information}

Step 5

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 numbers}
  • %ProgramData%\{Random numbers}\cc
  • %ProgramData%\{Random numbers}\autofill
  • %ProgramData%\{Random numbers}\cookies
  • %ProgramData%\{Random numbers}\crypto

Step 6

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