Analysis

  • max time kernel
    70s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/10/2022, 12:23

General

  • Target
    2f77277a17c38c8466993f09347e384b.exe
  • Size 367KB
  • Sample221024-pkfx5sgfdn
  • SHA256 5f7c22b82bb7dcb071efc024f67819c76613c0664f7e56df022ed942a376f5a5
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • vidar

Version
  • 55.1

Botnet
  • 1515

C2
  • https://t.me/tg_privatetalk

  • https://nerdculture.de/@yixehi33

Attributes
  • profile_id

    1515

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2f77277a17c38c8466993f09347e384b.exe
    "C:\Users\Admin\AppData\Local\Temp\2f77277a17c38c8466993f09347e384b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3404
    • C:\Users\Admin\AppData\Local\Temp\2f77277a17c38c8466993f09347e384b.exe
      "C:\Users\Admin\AppData\Local\Temp\2f77277a17c38c8466993f09347e384b.exe"
      2⤵
      • Checks computer location settings
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:816
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\2f77277a17c38c8466993f09347e384b.exe" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4808
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 6
          4⤵
          • Delays execution with timeout.exe
          PID:1196

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        mozglue.dll

        • Path C:\ProgramData\mozglue.dll
        • Size 593KB
        • SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
        • MD5 SHA1 SHA512 SSDEEP

        nss3.dll

        • Path C:\ProgramData\nss3.dll
        • Size 2.0MB
        • SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
        • MD5 SHA1 SHA512 SSDEEP

        sqlite3.dll

        • Path C:\ProgramData\sqlite3.dll
        • Size 1.1MB
        • SHA256 4841020c8bd06b08fde6e44cbe2e2ab33439e1c8368e936ec5b00dc0584f7260
        • MD5 SHA1 SHA512 SSDEEP

        memory/816-134-0x0000000000F90000-0x0000000000FEE000-memory.dmp

        memory/816-138-0x0000000000F90000-0x0000000000FEE000-memory.dmp

        memory/816-141-0x0000000000F90000-0x0000000000FEE000-memory.dmp

        memory/3404-132-0x0000000000740000-0x000000000079F000-memory.dmp