Analysis

  • max time kernel
    100s
  • 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
    13-02-2024 17:27

General

  • Target

    2024-02-13_12e2d1c2de65f1a66db9a994bbc11073_cryptolocker.exe

  • Size

    100KB

  • MD5

    12e2d1c2de65f1a66db9a994bbc11073

  • SHA1

    744fe16869010e5f75597d50a0dcfaf1032ef6df

  • SHA256

    9fce5ed461e08244f19d0218dd19aa1fa606a32fe4ec9061113e4f4fa2d2a591

  • SHA512

    6e02e9c28a0a8a7093bbccd2853eb32959fc971ca0851ed771495d40304b325ee5871dc28d79f78ccc2f765dfe1edb7b75e4710281f6661667f6b27cdd05fc1b

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRiWjzUNu5tZ:i5nkFGMOtEvwDpjNbwQEIikgNyZ

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 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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-13_12e2d1c2de65f1a66db9a994bbc11073_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-13_12e2d1c2de65f1a66db9a994bbc11073_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4684
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:4092

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    100KB

    MD5

    697c7d96ecb85b8dcbd4767065768926

    SHA1

    e38d11298a1cb4c578b97e40d864cd0852ffbb16

    SHA256

    f4042b15324d3210d45033e453b6ff139fc69f106c3a0c6d62169fce4118e0f0

    SHA512

    b1d03dd8d552e32384b31670a28197ef8998d9e7b020494da3a5ed0b03adbe5130c038cc1aa227300ffa06329674363de383ae165d132e4b760d9fcad2ebdd4f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4092-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4092-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4092-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4092-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4684-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4684-1-0x0000000002190000-0x0000000002196000-memory.dmp

    Filesize

    24KB

  • memory/4684-2-0x0000000002190000-0x0000000002196000-memory.dmp

    Filesize

    24KB

  • memory/4684-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

    Filesize

    24KB

  • memory/4684-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB