Analysis

  • max time kernel
    88s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/01/2024, 08:35

General

  • Target

    2024-01-24_af96f3858c24bff7512a5ee86ea3144d_cryptolocker.exe

  • Size

    44KB

  • MD5

    af96f3858c24bff7512a5ee86ea3144d

  • SHA1

    97e6ff4584e8411128c73fa3e3bdfb68ea78e11e

  • SHA256

    f0eb92aa842b3c78254b4257955a4707eb9694598e0168026175787377ef96ae

  • SHA512

    d6c980f0494d708c466f64cce9701bd83b92847954c29c5a5d123bde0a6e3e6e126c5e539f79c69d64f39167e42d0325e3b3bec4eb5bd7579c30e7243f6c8c4d

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjIm8z2iaSIO/WZrEu/d+qmsUHQ1wsC:ZzFbxmLPWQMOtEvwDpj386Sj/WprqQ1I

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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\2024-01-24_af96f3858c24bff7512a5ee86ea3144d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-24_af96f3858c24bff7512a5ee86ea3144d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4796
    • 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:2488

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    44KB

    MD5

    c15e20ba68e0ad87abcb6ee77eaa063b

    SHA1

    1b7272d00d871353ce6f325c3a7f896f9873b9cb

    SHA256

    4fc2ecc47526a8d09cf1ed507f7b1ecdceb3c3cabe00d846c92db22b955f28ee

    SHA512

    3f6f6c4b1a24c10d6460b7f27ac16c38636ce07e14308551b68b68db2d5cb1ec628ae97e4329e88b28debf1d288c04aed77e76d9d4e5ad43fc799f2a39233761

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2488-17-0x0000000000410000-0x0000000000413000-memory.dmp

    Filesize

    12KB

  • memory/2488-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2488-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4796-0-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB

  • memory/4796-1-0x0000000000530000-0x0000000000536000-memory.dmp

    Filesize

    24KB

  • memory/4796-2-0x0000000000530000-0x0000000000536000-memory.dmp

    Filesize

    24KB

  • memory/4796-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

    Filesize

    24KB

  • memory/4796-18-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB