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Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/03/2024, 07:46

General

  • Target

    2024-03-05_5016a195c5a64cbc298044f6fe91c733_cryptolocker.exe

  • Size

    66KB

  • MD5

    5016a195c5a64cbc298044f6fe91c733

  • SHA1

    3db41356572d4c1e7465e21fdeb5f58c5f2c5f69

  • SHA256

    91740ee8429629c7b81d30bfa1744a299a445c232fd0ccc312474ba1dc3a9dee

  • SHA512

    8898ef170a8e4fb641bfccfb9fd69420e21557559eb6c13d3be239ad0a1f7d6ef6a6ffffbb0ca5cf49596943fa5c2562fc50b5ddac2eda69cb8ef083f453a097

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3hvLcbVZhr:ZVxkGOtEvwDpjcawZ

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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-05_5016a195c5a64cbc298044f6fe91c733_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-05_5016a195c5a64cbc298044f6fe91c733_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4364
    • 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:4944

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    66KB

    MD5

    7e6d6c2de399e5ab0ce4c72af1a0521b

    SHA1

    2198ab88bb4b6fbc8965ada78bcecede5040b528

    SHA256

    8486e01c20a387df2b8e1b609d7dd38f058d66565d6ebd09d324e3063dc9c566

    SHA512

    95e5fece9c3c6abfc4302ddc7d05eada07202d9329f81093462f6e5a43c3823ef576ed79c94aca6dfddf22f78afa93e0195dc52c740614b40d812e9e3801c83a

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4364-0-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB

  • memory/4364-1-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/4364-2-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/4364-3-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/4364-17-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB

  • memory/4944-18-0x00000000004E0000-0x00000000004F0000-memory.dmp

    Filesize

    64KB

  • memory/4944-20-0x00000000007E0000-0x00000000007E6000-memory.dmp

    Filesize

    24KB

  • memory/4944-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4944-27-0x00000000004E0000-0x00000000004F0000-memory.dmp

    Filesize

    64KB