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Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/05/2024, 19:09

General

  • Target

    2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe

  • Size

    31KB

  • MD5

    82a126a911af851bbccf5494583f51ce

  • SHA1

    5560fae6b646460539dd40d48984ab498127846f

  • SHA256

    f6bc5f104e5da876e7bf5e6481da3176c7408b0c5f4d328114ae718b19dc58ae

  • SHA512

    42d7bd3cee1a39e1570f7ab2032792b0b44601e93ffa9f4dae15930b1327e407ee43d7a36464adc63a145c5345f655f03fde7ea32b1c481046eccb4ea7094360

  • SSDEEP

    384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXvv:bG74zYcgT/Ekd0ryfjkv

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1544
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:4856

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    31KB

    MD5

    54cbde494b9d473d2f3ee86395066913

    SHA1

    627964ae76defb988e607a46b7b3b3db3ac49dba

    SHA256

    c2d7b7e2ba6d444b2cf03bf051b427ec765ce2a0ed0961ac37c1f9774da98d22

    SHA512

    60db1a450012472416903cc495a99a6fd557a8ef793340d0ee91f0b8aac70b93e9e1b84b56f46d0d462d30066ee1679aa042706e5a28c3056a3083523488fa96

  • memory/1544-0-0x0000000008000000-0x000000000800A000-memory.dmp

    Filesize

    40KB

  • memory/1544-1-0x0000000002250000-0x0000000002256000-memory.dmp

    Filesize

    24KB

  • memory/1544-2-0x0000000003150000-0x0000000003156000-memory.dmp

    Filesize

    24KB

  • memory/1544-8-0x0000000002250000-0x0000000002256000-memory.dmp

    Filesize

    24KB

  • memory/1544-17-0x0000000008000000-0x000000000800A000-memory.dmp

    Filesize

    40KB

  • memory/4856-18-0x0000000008000000-0x000000000800A000-memory.dmp

    Filesize

    40KB

  • memory/4856-20-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

    Filesize

    24KB

  • memory/4856-27-0x0000000008000000-0x000000000800A000-memory.dmp

    Filesize

    40KB