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Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/03/2024, 23:29

General

  • Target

    2024-03-07_57973aca44473d723dd9b977242214d8_cryptolocker.exe

  • Size

    59KB

  • MD5

    57973aca44473d723dd9b977242214d8

  • SHA1

    0091bdb5732b03a27eb8174c5d2200be206d9dd7

  • SHA256

    aca1a0c73b75bba9b5d1d0de1a026f27b71d7458ecbb2752303cba49b271e348

  • SHA512

    7850d7722ab9c1a3cb66d0a35ae94d7b09a3a23ae0bbc308aef1789b8d36628da40461474cfdc1d45f16fb62823ca7815e2a55c5f0baa1b04d27c8aa5fada6ea

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb614v:BbdDmjr+OtEvwDpjMs

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 2 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\2024-03-07_57973aca44473d723dd9b977242214d8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-07_57973aca44473d723dd9b977242214d8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2800
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1132

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    59KB

    MD5

    3f0372f4e0152bef3455d8c3a87a033e

    SHA1

    b9b9a1cf9db4883808fee561d8bf7429e1cb3446

    SHA256

    a400e03046e77a5c70552b39d298c84612af72f9484631862c4ea0be1751d568

    SHA512

    fda24246f3843f273b1b462f6e6af9f40feb1f78af0fb1169a1e356801a44fa11f146afc161a702015da442752dcac70c748d437afda0bd4d06c117191b3eac0

  • memory/1132-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1132-21-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/1132-20-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/1132-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2800-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2800-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2800-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2800-3-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/2800-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB