Analysis

  • max time kernel
    130s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/05/2024, 11:48

General

  • Target

    2024-05-23_cc1906814c7eb1e40dbb8e2ee5154c5c_cryptolocker.exe

  • Size

    55KB

  • MD5

    cc1906814c7eb1e40dbb8e2ee5154c5c

  • SHA1

    d2fccf7109e795206ed1728783382e475e78aea9

  • SHA256

    7763cccde43b620dc5e0d97f1686c120c2294a66c1c9d2e7dd422c4ed6296517

  • SHA512

    2f973977849685bcf9d40726c30003502aee3158da090f966da6eb5367932c526f9044baf90e506fd0c117b6ebeedaffd6fcc1f248fa9ffbd55dca1c83e088a4

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdO5UjP:ZVxkGOtEvwDpjcK

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\2024-05-23_cc1906814c7eb1e40dbb8e2ee5154c5c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-23_cc1906814c7eb1e40dbb8e2ee5154c5c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:704
    • 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:1384

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          55KB

          MD5

          f813723c43d46eeda878ee8e1d000a2f

          SHA1

          7ce601e41c3e3f02596b475fae17d59e0ab50b6e

          SHA256

          267bdb8d3440a351e66770d6bdfc408863b0ef22f73dc1abc679697cd61e2682

          SHA512

          c9828443ef99c6ee19f4611ddfd299c0125408eadff8487e2cfa715c9ced4c963680f334aebdf37e705a7d9bcb59112221e101937cea7af947ad418da7be4a90

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/704-0-0x00000000004F0000-0x00000000004F3000-memory.dmp

          Filesize

          12KB

        • memory/704-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

          Filesize

          24KB

        • memory/704-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

          Filesize

          24KB

        • memory/704-9-0x00000000020D0000-0x00000000020D6000-memory.dmp

          Filesize

          24KB

        • memory/704-17-0x00000000004F0000-0x00000000004F3000-memory.dmp

          Filesize

          12KB

        • memory/1384-19-0x0000000000650000-0x0000000000656000-memory.dmp

          Filesize

          24KB

        • memory/1384-25-0x0000000000630000-0x0000000000636000-memory.dmp

          Filesize

          24KB