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Analysis

  • max time kernel
    146s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/05/2023, 04:25

General

  • Target

    file.exe

  • Size

    4.6MB

  • MD5

    3cc3c84c2b53d1af1ef32385194d9567

  • SHA1

    b39f3f126d7ce4c8d0c4e9466d442dfff1be1b2e

  • SHA256

    43283967357b7430a89b8904c8ad5022759cf0d5e9adc6505e68e95d7eebf993

  • SHA512

    f5463525fc8e98d7ab1e259578e7ba26e5512900da4daa567fec7d98349d325c8d79fd1273a2beb9e7b08b37d41f59ffaeae269417abd14ba97fe5775951e217

  • SSDEEP

    98304:OwH5CqQ9h1l2jhdslXO2NmuWnCCYUryWQ4m+zyrVxigu6LrL:xH5CqQnP8hdscKmHryWXmk4xiuf

Malware Config

Extracted

Family

vidar

Version

3.7

Botnet

50444a9e42e55764a9d1f05ed3caa653

C2

https://steamcommunity.com/profiles/76561199501059503

https://t.me/mastersbots

Attributes
  • profile_id_v2

    50444a9e42e55764a9d1f05ed3caa653

  • user_agent

    Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/112.0

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 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • VMProtect packed file 1 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Accesses 2FA software files, 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.

  • Enumerates physical storage devices 1 TTPs

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

  • 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 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2280
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2520
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:4008

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • C:\ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/2280-133-0x0000000000EC0000-0x00000000016AD000-memory.dmp

    Filesize

    7.9MB

  • memory/2280-145-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB