Analysis

  • max time kernel
    65s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-10-2022 08:57

General

  • Target

    file.exe

  • Size

    318KB

  • MD5

    e58c70e8e2cde5c7aee3975db0a2e559

  • SHA1

    4c88ba2a9c7cd614c74fdb34d17ee5d82fc6a4fe

  • SHA256

    2a929266c1c731452ab4171a4c6cb980d6c84a6cc81e2bec5b1dacec075113bf

  • SHA512

    b4a49e871630b96e94833ca794c2982e96ceb03052fcfbe58e7b3c7e2868a5d2f837f0ed8173bef0b22ba38be28ec22584fabd0d199b0706ae71b9481880adf8

  • SSDEEP

    6144:0gqL0tcc42sJfwLJBd9wEu6bxAfcdbr9syJM9GTQtbUxQWm0vMEl:0votci1zjw9QrdFsyMOmFEl

Malware Config

Extracted

Family

vidar

Version

55.2

Botnet

937

C2

https://t.me/slivetalks

https://c.im/@xinibin420

Attributes
  • profile_id

    937

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 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.

  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 15 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:1952
    • C:\ProgramData\36248078010644580156.exe
      "C:\ProgramData\36248078010644580156.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4392
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\FilesH.bat" "
        3⤵
        • Drops file in Drivers directory
        PID:4156
      • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Cert.exe
        "C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Cert.exe"
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:316
    • 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:1028
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:32
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1952 -s 2008
      2⤵
      • Program crash
      PID:224
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1952 -ip 1952
    1⤵
      PID:2652

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\36248078010644580156.exe

      Filesize

      377KB

      MD5

      de45c35d825037562691bf4966baa877

      SHA1

      34d5ce24da23e95eede66f7eb03f643c9f1fc6fc

      SHA256

      d2702be16de20ee796d1c38ce9f7636b3327b648cdb4bd77823fba908d481c48

      SHA512

      c0ce84055656b576fd5c597aea063844f0227a1940eb64e4fe1c7bc4e5bdff0a06a7abbd8d3c4c18017337b44828c262ecebaf948a17e1e9d5a253c53de152ef

    • C:\ProgramData\36248078010644580156.exe

      Filesize

      377KB

      MD5

      de45c35d825037562691bf4966baa877

      SHA1

      34d5ce24da23e95eede66f7eb03f643c9f1fc6fc

      SHA256

      d2702be16de20ee796d1c38ce9f7636b3327b648cdb4bd77823fba908d481c48

      SHA512

      c0ce84055656b576fd5c597aea063844f0227a1940eb64e4fe1c7bc4e5bdff0a06a7abbd8d3c4c18017337b44828c262ecebaf948a17e1e9d5a253c53de152ef

    • 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

    • C:\ProgramData\sqlite3.dll

      Filesize

      1.1MB

      MD5

      1f44d4d3087c2b202cf9c90ee9d04b0f

      SHA1

      106a3ebc9e39ab6ddb3ff987efb6527c956f192d

      SHA256

      4841020c8bd06b08fde6e44cbe2e2ab33439e1c8368e936ec5b00dc0584f7260

      SHA512

      b614c72a3c1ce681ebffa628e29aa50275cc80ca9267380960c5198ea4d0a3f2df6cfb7275491d220bad72f14fc94e6656501e9a061d102fb11e00cfda2beb45

    • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Cert.exe

      Filesize

      275KB

      MD5

      119ee6d6dcfa21f32dd9db95b365f256

      SHA1

      42d7f74eab4682928b03e577e2f5b9e6a2d95356

      SHA256

      ca128762eff2a68d3c319bd81574e423c79f59b1e445646ebe83b9c2135c5146

      SHA512

      cb4b8a2f037f1e0ab6a06094895ce9afffaaa428142c63259fa4d899ea53e06c581f5379156bb5f5c577daec8ed8d3e4e315d504771176f2c1a9fb8904a54b7e

    • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Cert.exe

      Filesize

      275KB

      MD5

      119ee6d6dcfa21f32dd9db95b365f256

      SHA1

      42d7f74eab4682928b03e577e2f5b9e6a2d95356

      SHA256

      ca128762eff2a68d3c319bd81574e423c79f59b1e445646ebe83b9c2135c5146

      SHA512

      cb4b8a2f037f1e0ab6a06094895ce9afffaaa428142c63259fa4d899ea53e06c581f5379156bb5f5c577daec8ed8d3e4e315d504771176f2c1a9fb8904a54b7e

    • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\FilesH.bat

      Filesize

      355B

      MD5

      dd02458f6895094a339f406307325786

      SHA1

      3fc884aa1813ff64b3e0a9811158c4dbd8bf7736

      SHA256

      8e5b9aebf24078dc03e2a18c802127eb66bde2cda4d42740b9082bb1a888b787

      SHA512

      b2bb96803b53f3d4b6e318268e8fe76bc5340b7bbe01287c0d526caf1ab54747692491df0c2b3684cf30eaa49ab2bbf65ebeec5099c8b82709044116c9bc6e73

    • memory/32-143-0x0000000000000000-mapping.dmp

    • memory/316-148-0x0000000000760000-0x00000000007AA000-memory.dmp

      Filesize

      296KB

    • memory/316-145-0x0000000000000000-mapping.dmp

    • memory/316-151-0x00000000064D0000-0x00000000064F2000-memory.dmp

      Filesize

      136KB

    • memory/1028-142-0x0000000000000000-mapping.dmp

    • memory/1952-134-0x0000000000400000-0x0000000002C3D000-memory.dmp

      Filesize

      40.2MB

    • memory/1952-133-0x0000000002DD0000-0x0000000002E19000-memory.dmp

      Filesize

      292KB

    • memory/1952-132-0x0000000002E43000-0x0000000002E6F000-memory.dmp

      Filesize

      176KB

    • memory/1952-149-0x0000000002E43000-0x0000000002E6F000-memory.dmp

      Filesize

      176KB

    • memory/1952-150-0x0000000000400000-0x0000000002C3D000-memory.dmp

      Filesize

      40.2MB

    • memory/4156-141-0x0000000000000000-mapping.dmp

    • memory/4392-138-0x0000000000000000-mapping.dmp