Analysis

  • max time kernel
    115s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-10-2022 16:13

General

  • Target

    file.exe

  • Size

    359KB

  • MD5

    a1c33d360b68460d9b42d30ba8eb0b66

  • SHA1

    9a26e01b7330c77a2f15e39c0da564003841513a

  • SHA256

    1bd4abc21125d116ca1b721d180e1c36dd0bf7b78b69088a9b17c8445fdda085

  • SHA512

    47be7f5260bcaa860bfec3072d8a6db0c5c69cc9cc31f79c0f1fc44baa849bbb7f35c93066022f40f0c4694198105b33cbc218c38150dfbe02da4532b1099d71

  • SSDEEP

    6144:qb3pDH9HadMdX6jN2iVydIgckBqNEp+1w6PAgLcMvhlOO85kMC+vh7HMyx5g6VO:qlGMQg+yuaZMT4chlKqEp7HM25K

Malware Config

Extracted

Family

vidar

Version

55

Botnet

1718

C2

https://t.me/truewallets

https://mas.to/@zara99

http://116.203.10.3:80

Attributes
  • profile_id

    1718

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.

  • 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
  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 18 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:4056
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Checks computer location settings
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1284
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" 195.201.253.169/c taskkill /im file.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\file.exe" & del C:\PrograData\*.dll & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3828
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /im file.exe /f
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:3592
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 6
          4⤵
          • Delays execution with timeout.exe
          PID:4368

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/1284-133-0x0000000000400000-0x0000000000469000-memory.dmp

    Filesize

    420KB

  • memory/1284-135-0x0000000000400000-0x0000000000469000-memory.dmp

    Filesize

    420KB

  • memory/1284-136-0x0000000000400000-0x0000000000469000-memory.dmp

    Filesize

    420KB

  • memory/1284-137-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/1284-159-0x0000000000400000-0x0000000000469000-memory.dmp

    Filesize

    420KB