Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/02/2024, 02:28

General

  • Target

    2024-02-28_1cd0dcf7d99c82d32045f2edc50aaf8c_cryptolocker.exe

  • Size

    60KB

  • MD5

    1cd0dcf7d99c82d32045f2edc50aaf8c

  • SHA1

    fb548223812be3f70720fe7c8d1f04de0f73b6b4

  • SHA256

    2377e817e48e6afb4f598aaf9bb28010b400f913b50ba903eb1eef65d325520f

  • SHA512

    be9ee04af31f77a16aa2fdc51aeeb7c8d7e5d11137935c6d9966dc98179176aac9348623e47c72dd5491b0e54418cd89eb91661fef51ef87f5a7346a9998f9c3

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjIm8lB4dCOBy/cMFqeoYPO+lxUU5:ZzFbxmLPWQMOtEvwDpj38lD/cMAT+lf

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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-28_1cd0dcf7d99c82d32045f2edc50aaf8c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-28_1cd0dcf7d99c82d32045f2edc50aaf8c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4652
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:1840

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    60KB

    MD5

    140643e3e3f7c224f541be829de06f1f

    SHA1

    dcfbe4d16219f388ef0300430a10d2753918325d

    SHA256

    cf0e64a7d96c96aa0e58edf65792e23ba2b17627eb6c017656da956c42bf19bf

    SHA512

    cfe8346e9f219f6f7a43716be45847fd4e81d4e7bdff812a6a22a88faa404fceead00377c61128d2dd858bb18df12d47deb7327e4dc3aa7d7f994ef7bb04c5fa

  • memory/1840-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/1840-25-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4652-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/4652-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4652-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4652-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/4652-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB