Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/03/2024, 10:45

General

  • Target

    2024-03-27_e4687f2936a286a97a973ae363be0436_cryptolocker.exe

  • Size

    40KB

  • MD5

    e4687f2936a286a97a973ae363be0436

  • SHA1

    2a7ceeb920e15f4bcd7336dcc47f66d0595c422d

  • SHA256

    895fe052414034e070423e9e577f15406ee7755ff6bc9b364668fc06d9726728

  • SHA512

    53e73c7237bd907b241bb7d7b154f11db58c5085d9371f58abd3ed0f445fe0c0841bfe52348f03f3240bdf2d181e06c3b4fef3b997087f1593db4d7cb4eec35a

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9RzhwaO4f:i5nkFGMOtEvwDpjR+TR

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • Detects executables built or packed with MPress PE compressor 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
  • 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\2024-03-27_e4687f2936a286a97a973ae363be0436_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-27_e4687f2936a286a97a973ae363be0436_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3632
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:824

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    1fb312051ac83958c9fceb777b6145a0

    SHA1

    c0214e23236d77bb3c423094a2d7f730187a2f9a

    SHA256

    c782b177bcef7379e17ea26b6464a0bdbdf8f9c764ae3168a32b242b3e039daa

    SHA512

    d13eb611b817e7de083f878dd3323c69ee1089fe6158b8acd45fd13b7f7b65ba6d89baf513e34c04464eb42beeaabd91b1a83b17f4ec861b339692df87245366

  • memory/824-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/824-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/824-26-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/824-27-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3632-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3632-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3632-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3632-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3632-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB