Overview

overview

9

Static

static

3

2025-07-08...ar.exe

windows10-2004-x64

9

2025-07-08...ar.exe

windows11-21h2-x64

9

Resubmissions

08/07/2025, 13:47

250708-q3xt2seq4t9

08/07/2025, 05:07

250708-fr3wtatthz9

Analysis

  • max time kernel
    101s
  • max time network
    103s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250619-en
  • resource tags

    arch:x64arch:x86image:win11-20250619-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    08/07/2025, 05:07

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General

  • Target
    2025-07-08_6c4fa3e0eedb3100f4757bd2172bec9f_conti_vidar.exe
  • Size 243KB
  • Sample250708-fr3wtatthz
  • SHA256 14468d1a661ce6296e3b0ee696d8c95b3798138668463e142046c056fb870b68
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10
credential_accessdiscoveryransomwarespywarestealer

Malware Config

Signatures

  • Renames multiple (8492) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

    credential_accessstealer
  • Drops startup file 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Drops desktop.ini file(s) 30 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-07-08_6c4fa3e0eedb3100f4757bd2172bec9f_conti_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-07-08_6c4fa3e0eedb3100f4757bd2172bec9f_conti_vidar.exe"
    1⤵
    • Drops startup file
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{2DEF40C0-F13A-4FD6-ADA2-1D3AD66487CC}'" delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1084
      • C:\Windows\System32\wbem\WMIC.exe
        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{2DEF40C0-F13A-4FD6-ADA2-1D3AD66487CC}'" delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:5452
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:5064

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        BlackField_ReadMe.txt
        • Path C:\Program Files\BlackField_ReadMe.txt
        • Size 2KB
        • SHA256 2c56e74534d4b9ef7cde82582b5cc238a3ed70447cc3f09650a082923ec43fb2
        • MD5 SHA1 SHA512
        Submit Download