Analysis

  • max time kernel
    149s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/05/2024, 16:25

General

  • Target

    2024-05-24_75b26e3497d5be52fe772667a7c69300_cryptolocker.exe

  • Size

    70KB

  • MD5

    75b26e3497d5be52fe772667a7c69300

  • SHA1

    200e407ce5e6488c7b02870b200934a32d1aff38

  • SHA256

    7881e727f7def0a60ee169389adac7d2bfa24e7d02936da16618b796f330be93

  • SHA512

    11bcd438d34bb7f920c0783978e32c4d76a4551a1b2c322afb73ff0efb2e3a574adc014b49f7359ff162be21fc2611a991345494a881f3c6f22bca697b27e8f7

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/Rn:vj+jsMQMOtEvwDpj5HZYTjipvF24f

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-24_75b26e3497d5be52fe772667a7c69300_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_75b26e3497d5be52fe772667a7c69300_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:64
    • 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:908

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    70KB

    MD5

    6c8d8ab1ce6fe1b09e90a437154b0be3

    SHA1

    b66c579fd5b057f3c5f8daea811e48ec09c7bb74

    SHA256

    7b03b7bc9b1fefc3e78b3aa94cede7dca9575e6b6b7422a2207176186e9bc0f0

    SHA512

    38db2a95b67dda2658abced5bf819679b80c7a277bbc5604df091397fcc5caeec2cc5d7e53e7c6c836995d6b915a3ced88ff35dabef388a76e052cad734c0109

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/64-0-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/64-1-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/64-8-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/908-17-0x0000000002000000-0x0000000002006000-memory.dmp

    Filesize

    24KB

  • memory/908-23-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB