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Analysis

  • max time kernel
    92s
  • max time network
    161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/02/2024, 03:49

General

  • Target

    2024-02-04_a01ad8aef189854014da85ec7962d5de_cryptolocker.exe

  • Size

    39KB

  • MD5

    a01ad8aef189854014da85ec7962d5de

  • SHA1

    1a10ad75ea3c0c3e5d5873445679d4eeca7bee96

  • SHA256

    db1f558858708ef6bb5d0361d19684926437bb9995c22168aca0d6c8f029b059

  • SHA512

    4ed7cb97546db1a3d3c62ddf7cc98acc6794ffe17a539e2f814758933646516a4f3814743e91abf436d5036aa11e6a5bc7b9bb8c6293c737c4163cff745ecc16

  • SSDEEP

    384:60VkMq01bJ3wtEwPS8HLEh+Jagz+3be+26aIIcVRYpetOOtEvwDpjqIGRmdHzOOK:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/c

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • 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\2024-02-04_a01ad8aef189854014da85ec7962d5de_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-04_a01ad8aef189854014da85ec7962d5de_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1944
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:2168

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    d43847283cc55623264ae7125804086f

    SHA1

    512ff584816ea18befe6f8a4f7662bd84425b6b2

    SHA256

    daf0be17f445a97636b39b697e564d93a3577d8feed41989b4fb7cef65f05195

    SHA512

    647cb2b793d170a491228bfe8c6714e12054da00841befe84d5b52dc4804bb2541165f61dca1c41710b84f75ed401342cc86954afe366d89b63a26370cb36531

  • memory/1944-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1944-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/1944-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/1944-3-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/1944-14-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2168-19-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/2168-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2168-54-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB