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Analysis

  • max time kernel
    70s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/10/2022, 13:06

General

  • Target

    c5ed85e8c11af4a57d4ed3d4511c0cad.exe

  • Size

    348KB

  • MD5

    c5ed85e8c11af4a57d4ed3d4511c0cad

  • SHA1

    025695a987afcb517e03b57b7a68aacd4452a21d

  • SHA256

    9edf684165900cda2567c388a5ec574bbc6b2c27415cc56e965d5562c4ad1176

  • SHA512

    fe19b57bc665c9900da2cb55cfaa9cdd580ad65a9c5bb6ae7f7305b1d1f224529a90b85e71326b99627ebe8f4bb8c67e26a698527021f4a777551c4b00e1f813

  • SSDEEP

    6144:kbHpL5/47iaCautdZ6MtiXsGPgZFGHVvJGs:kbHpB47DktdoiMtyFGjGs

Malware Config

Extracted

Family

vidar

Version

55.2

Botnet

1707

C2

https://t.me/slivetalks

https://c.im/@xinibin420

Attributes
  • profile_id

    1707

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 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.

  • 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 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c5ed85e8c11af4a57d4ed3d4511c0cad.exe
    "C:\Users\Admin\AppData\Local\Temp\c5ed85e8c11af4a57d4ed3d4511c0cad.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:736
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\c5ed85e8c11af4a57d4ed3d4511c0cad.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4224
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:5088
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 1908
      2⤵
      • Program crash
      PID:4692
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 736 -ip 736
    1⤵
      PID:4284

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    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

    • C:\ProgramData\sqlite3.dll

      Filesize

      1.1MB

      MD5

      1f44d4d3087c2b202cf9c90ee9d04b0f

      SHA1

      106a3ebc9e39ab6ddb3ff987efb6527c956f192d

      SHA256

      4841020c8bd06b08fde6e44cbe2e2ab33439e1c8368e936ec5b00dc0584f7260

      SHA512

      b614c72a3c1ce681ebffa628e29aa50275cc80ca9267380960c5198ea4d0a3f2df6cfb7275491d220bad72f14fc94e6656501e9a061d102fb11e00cfda2beb45

    • memory/736-133-0x0000000002C50000-0x0000000002D50000-memory.dmp

      Filesize

      1024KB

    • memory/736-134-0x00000000030C0000-0x0000000003109000-memory.dmp

      Filesize

      292KB

    • memory/736-135-0x0000000000400000-0x0000000002C44000-memory.dmp

      Filesize

      40.3MB

    • memory/736-141-0x0000000000400000-0x0000000002C44000-memory.dmp

      Filesize

      40.3MB