Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/06/2024, 16:31

General

  • Target

    2024-06-16_b6b9a4ff8505614375180c4197bdf12a_cryptolocker.exe

  • Size

    94KB

  • MD5

    b6b9a4ff8505614375180c4197bdf12a

  • SHA1

    fdae8820ba86624f6b5779b532cec74db65999af

  • SHA256

    b82654957449874b70ce7def777f4a58482c0505688c59325d8506d97c5fa861

  • SHA512

    869950b1e2fb3c25f47e3dcda7f5eedd67c067831405886d884ef6da9f5b80df9a48e5ca3499740f2cc6a70b455631e144cac4565fb6a61a746d8c5bd95f19f6

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/kb:zCsanOtEvwDpjB4

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-16_b6b9a4ff8505614375180c4197bdf12a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-16_b6b9a4ff8505614375180c4197bdf12a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2300
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:1872

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\misid.exe

    Filesize

    94KB

    MD5

    be932e83402ad5648c60c73e130b1c0b

    SHA1

    74d2abc662b692ae5a237c7a3adc677b94fe956d

    SHA256

    bb5cd42a6a55fd605a2be63707d6d054c209ff045d62d692f64a937e8ed94990

    SHA512

    8d4a82ecb749db7563f61bb7d547d9ac659d7e54b0be9c6ffc73442d56c8af0fd72c67d1c0a7719a8baecec80b7fbfda1c4bfdb54e76a3a8c5d256de76a41e0f

  • memory/1872-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1872-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/1872-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/1872-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2300-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2300-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/2300-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/2300-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/2300-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB