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Analysis

  • max time kernel
    147s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/03/2024, 08:26

General

  • Target

    2024-03-19_38b9bb93e74b06cc69150cd69af13b51_cryptolocker.exe

  • Size

    47KB

  • MD5

    38b9bb93e74b06cc69150cd69af13b51

  • SHA1

    40e6980d25929e38769250e2f581a9da8eb085bb

  • SHA256

    4d852b1cdeda962e0c809712fb21c935107f4b4edcea4565ae11cbcdc25f5c6e

  • SHA512

    57dbbf2b5e4f2c49a5990d58358bf4b91cfb360ad59c4fb36789e576ffb6bb200f0ccccac5104d07b76ed9f408c06570d2c885e0d3417ece2cc86e2342582431

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLtldedE:xj+VGMOtEvwDpjk/eS

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-19_38b9bb93e74b06cc69150cd69af13b51_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-19_38b9bb93e74b06cc69150cd69af13b51_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2740
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:3788

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    47KB

    MD5

    444ee0a03046cd005149ec2c563961c9

    SHA1

    7687c6cc7f91e2797027bb1e45933ee092c3528e

    SHA256

    bdde2afd94a9958bf870caf56fa960374a6626f9c1d7aca840bda7c89b2e0389

    SHA512

    fb8e26ba9fa3314e765840354341f1abfba15bb76fdb8cc0cdeb6300c6978e3f4d7049038dce8243cbf7ead880b7f8603cc9a8af8bcb62d4acdaa1d4bfb9795b

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2740-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2740-1-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/2740-2-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/2740-3-0x0000000000680000-0x0000000000686000-memory.dmp

    Filesize

    24KB

  • memory/2740-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3788-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3788-21-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/3788-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/3788-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB