Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-05-2024 08:40

General

  • Target

    2024-05-01_8cc06975b1620c3966116af1e1e36471_cryptolocker.exe

  • Size

    56KB

  • MD5

    8cc06975b1620c3966116af1e1e36471

  • SHA1

    ce33e306f6ef1d49e438d64f7580d25083c1b2aa

  • SHA256

    f2fbf246009bb7f82f0301bc81608abd1dd9a34b9f5a62338b413e7fd938585d

  • SHA512

    a497b4831e09a5d2c1de8cf50f380f35d879602a84d46a3264f411815133d37c4af9a8535d1e8e59d00c95fc29f2e3d4210471feace07b1f1c67dae93732819f

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6ImpyJ:BbdDmjr+OtEvwDpjM+

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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
  • 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\2024-05-01_8cc06975b1620c3966116af1e1e36471_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-01_8cc06975b1620c3966116af1e1e36471_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4948
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1988

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    56KB

    MD5

    5c6aa9b9df0db27a0a75471133988fa2

    SHA1

    681766f430571fc42d767086065d01d4ab124356

    SHA256

    5ff664c3d0aab9b815022e66570e11db32be74d0d2e2ca7dc43dd2a6e713bdbd

    SHA512

    aee7ddc199b14b9567f85a396f8e69b552ab67115379dca9452c3d299f3ea7ace8e0322d728f2e77d5154d9349d7c12d8857763196941fe25d8ffbc9f18d0249

  • memory/1988-19-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1988-21-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/1988-27-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/1988-28-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4948-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4948-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4948-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4948-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4948-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB