Analysis

  • max time kernel
    71s
  • max time network
    116s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/10/2022, 04:39

General

  • Target
    file.exe
  • Size 503KB
  • Sample221022-e9yjdaaff5
  • SHA256 e1b703cb0718ac38b01753facb2dd66a8c60d5af82f190f00f90d3a2f53a8a4c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • vidar

Version
  • 55.1

Botnet
  • 670

C2
  • https://t.me/tg_privatetalk

  • https://nerdculture.de/@yixehi33

Attributes
  • profile_id

    670

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Loads dropped DLL 3 IoCs
  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • 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 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3660
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1952
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4708
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 6
          4⤵
          • Delays execution with timeout.exe
          PID:484

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/1952-133-0x0000000000400000-0x000000000045E000-memory.dmp

        memory/1952-139-0x0000000000400000-0x000000000045E000-memory.dmp

        memory/3660-140-0x00000000005C0000-0x0000000000641000-memory.dmp