Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-02-2024 21:29

General

  • Target

    2024-02-19_33c2a1189c2d5716f3e89f9ab0179675_darkside.exe

  • Size

    146KB

  • MD5

    33c2a1189c2d5716f3e89f9ab0179675

  • SHA1

    832cbb42ca2d3d772f5fc6836f98bb5b0059ee3b

  • SHA256

    f01909eee3dec5474a5a845deea3f8fb5502ac006f65060a7e945f91c966e266

  • SHA512

    530777cd0805f84b7831b193e8adec637877332b1ecf7005efc960e3fb2f5432b33c44ba758f853f364702e64d781330896fb6fc878314c0de926e547dc18d69

  • SSDEEP

    3072:9FqJogYkcSNm9V7DdOgrDx34Uuv5hQrfT:9Fq2kc4m9tDsIDx31d

Malware Config

Extracted

Path

C:\7fpKwvu5x.README.txt

Ransom Note
!!! ALL YOUR FILES ARE ENCRYPTED!!! All your files, documents, photos, databases and other important files are encrypted. The only way to recover your files is to use a decryptor. To get the decryptor, write to us by mail or telegram, specify the ID of the encrypted files in the letter: Email: [email protected] Telegram: https://t.me/bit_decryptor Warning. * Do not rename encrypted files. * Do not attempt to decrypt data using third party software as this may result in permanent data loss. * Do not contact other people, only we can help you and recover your data. Your personal decryption ID: 6D5636AB1EC8D8A24C41A0559C62E003
URLs

https://t.me/bit_decryptor

Signatures

  • Renames multiple (582) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops desktop.ini file(s) 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-19_33c2a1189c2d5716f3e89f9ab0179675_darkside.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-19_33c2a1189c2d5716f3e89f9ab0179675_darkside.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3512
    • C:\ProgramData\C796.tmp
      "C:\ProgramData\C796.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:4040
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\C796.tmp >> NUL
        3⤵
          PID:4788

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\$Recycle.Bin\S-1-5-21-983843758-932321429-1636175382-1000\desktop.ini

      Filesize

      129B

      MD5

      28f48e9bc1370204235f21fa0d397951

      SHA1

      5ae62015893f71e5bd5a6b9225ef06a1a4b81908

      SHA256

      294af59fd946c2367f21b4f0747ef4bd964df256236054697276ea0cea601cf5

      SHA512

      22442aebac854c19a63fe654690b769a67e9a742a7f6bcbd781efa2cb7a689778920e705410508bb905c5c154d385a827edc1dd6a6e93de18ae514cdee47d86c

    • C:\7fpKwvu5x.README.txt

      Filesize

      659B

      MD5

      5591feeb6b8425ab4538af7a9c9b2dcc

      SHA1

      1abc5bb79730ddea096e48b10f9a491515bb7012

      SHA256

      11818078762c50ebf5b9f9f2113aadd3295cb0525aaa600a8f3326eab0682cec

      SHA512

      41dfb2440a53dde34c4171de019b9bca1e9583f47e4acb551eb6c72140e8b428918207e6fabeb68c35e085218a07a8515931890eae16847fb48b2894a69d6506

    • C:\ProgramData\C796.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

    • C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

      Filesize

      146KB

      MD5

      5e9e83f64eec8551dd41b794a84d137d

      SHA1

      bc5171281668dc62bd832c29b420298add9bb6a5

      SHA256

      54df08cab5240d8a55cd8287a56419c4023c8492b75ddbab1b580ea0377d2d56

      SHA512

      afd73905108cbbbb7b08df1778139d85b533b570afff75404f194744f5dd8fd33daf6e6fa6c12a956a4116478b1ba8354fa019e501eb03252658c5ce1cc84da6

    • F:\$RECYCLE.BIN\S-1-5-21-983843758-932321429-1636175382-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      f8661091e0ecc47c7e3f384be0043c03

      SHA1

      da62058291f4a5fb7ebf4311e3b08639664d54ba

      SHA256

      4c541b2e1e2757b875627fd801db9dd3ba3eec40542e558dc7efa9f57a5c895f

      SHA512

      54bfa49e0741c95eafc617d9bfb3e457057489e9214aee657947eebdc870e589c8682e4faf718c564bea0a6e52104d11fbe75af8ce6345bdf2e65b605185d834

    • memory/3512-2726-0x0000000002C40000-0x0000000002C50000-memory.dmp

      Filesize

      64KB

    • memory/3512-2-0x0000000002C40000-0x0000000002C50000-memory.dmp

      Filesize

      64KB

    • memory/3512-2725-0x0000000002C40000-0x0000000002C50000-memory.dmp

      Filesize

      64KB

    • memory/3512-0-0x0000000002C40000-0x0000000002C50000-memory.dmp

      Filesize

      64KB

    • memory/3512-2727-0x0000000002C40000-0x0000000002C50000-memory.dmp

      Filesize

      64KB

    • memory/3512-1-0x0000000002C40000-0x0000000002C50000-memory.dmp

      Filesize

      64KB

    • memory/4040-2728-0x000000007FE40000-0x000000007FE41000-memory.dmp

      Filesize

      4KB

    • memory/4040-2731-0x000000007FE20000-0x000000007FE21000-memory.dmp

      Filesize

      4KB

    • memory/4040-2729-0x00000000023A0000-0x00000000023B0000-memory.dmp

      Filesize

      64KB

    • memory/4040-2730-0x00000000023A0000-0x00000000023B0000-memory.dmp

      Filesize

      64KB

    • memory/4040-2732-0x000000007FDC0000-0x000000007FDC1000-memory.dmp

      Filesize

      4KB

    • memory/4040-2761-0x000000007FDE0000-0x000000007FDE1000-memory.dmp

      Filesize

      4KB

    • memory/4040-2762-0x000000007FE00000-0x000000007FE01000-memory.dmp

      Filesize

      4KB