Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-03-2024 06:40

General

  • Target

    2024-03-26_7b917bf5677b973bcb3952aa379058c8_cryptolocker.exe

  • Size

    34KB

  • MD5

    7b917bf5677b973bcb3952aa379058c8

  • SHA1

    aa428b4280a811e2880a231cc4086cbd2cfe0174

  • SHA256

    7e3da2c39605daa2da5875be43be719711d92bc6f9e57a81f6ee331943d36161

  • SHA512

    46e3f48a87e0f76c33adba767f324b95ad4bf3a0bc590a8ec9da2e07f198aed3f7badb295cbff8e4a437b58174e79db85f4c1cf50d0ddfb33c06ff1bb14640d5

  • SSDEEP

    384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUr766SJXTQke8SEMMS:bA74zYcgT/Ekd0ryfjQRSNhpSF/

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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\2024-03-26_7b917bf5677b973bcb3952aa379058c8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-26_7b917bf5677b973bcb3952aa379058c8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3464
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:4340

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    34KB

    MD5

    92c97172ae3d3dd04d37a1d3435c79cf

    SHA1

    883ce7ffff1f36d55f01ff4ca2f4b11ab16e7231

    SHA256

    e5f68d6397b83b2e6fa0dec85d349e73c43a9135cfb882a41cdb0adb8a75ee7c

    SHA512

    b8ea85e340ed0a910058174eaa7b10c616db452c040e757c0bbcf211a7de3482d2f821b670f5050c80cba5890e9ddf035ef7b4f9ecac5030ff65b9316e730f3e

  • memory/3464-0-0x0000000002D60000-0x0000000002D66000-memory.dmp

    Filesize

    24KB

  • memory/3464-1-0x0000000002D60000-0x0000000002D66000-memory.dmp

    Filesize

    24KB

  • memory/3464-2-0x0000000003010000-0x0000000003016000-memory.dmp

    Filesize

    24KB

  • memory/4340-17-0x0000000002150000-0x0000000002156000-memory.dmp

    Filesize

    24KB

  • memory/4340-18-0x0000000002120000-0x0000000002126000-memory.dmp

    Filesize

    24KB