Analysis

  • max time kernel
    122s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    16/02/2023, 16:50

General

  • Target
    Setup.exe
  • Size 455KB
  • Sample230216-vb858aaf66
  • SHA256 e282e8a40a9f9c66e32ff63aa62ea236f642110e79047a3c3d00428df09536a6
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • vidar

Version
  • 2.5

Botnet
  • 408

Attributes
  • profile_id

    408

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Loads dropped DLL 2 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 1 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:892
      • 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\AppLaunch.exe" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1628
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 6
          4⤵
          • Delays execution with timeout.exe
          PID:1072

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        mozglue.dll

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

        nss3.dll

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

        memory/892-55-0x0000000000400000-0x0000000000472000-memory.dmp

        memory/892-57-0x0000000000400000-0x0000000000472000-memory.dmp

        memory/892-64-0x0000000000400000-0x0000000000472000-memory.dmp

        memory/892-66-0x0000000000400000-0x0000000000472000-memory.dmp

        memory/892-67-0x00000000512B0000-0x00000000513A3000-memory.dmp

        memory/2024-54-0x00000000766D1000-0x00000000766D3000-memory.dmp