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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/05/2024, 18:41

General

  • Target

    20240521d5fde12d5e95bb1962660a7866d57745cryptolocker.exe

  • Size

    71KB

  • MD5

    d5fde12d5e95bb1962660a7866d57745

  • SHA1

    9db70740561db0cee23613cac13fb856a3ffba8e

  • SHA256

    296740b42132aaadcc005457a1be28695e13c0a83e2563383fee0bb8d4b9e58f

  • SHA512

    6e4624a8772ab2846f3855ac0f7fde1c5fd01d685dd8d8f5a29f49b0aa15e2be0e1be98e8eb01179e0df444aa6106614b7caed99f85b56fff72cf792086cc834

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/Re:vj+jsMQMOtEvwDpj5HZYTjipvF242

Score
7/10

Malware Config

Signatures

  • 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20240521d5fde12d5e95bb1962660a7866d57745cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\20240521d5fde12d5e95bb1962660a7866d57745cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2752
    • 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:4168

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    72KB

    MD5

    160105b9feba4e4a206397cee457da4e

    SHA1

    a181499893b20007cb857c46a2389883c289cbb2

    SHA256

    7df3591f3d8782bf5676ca7c4c8bcdabf81b72a31f1b7394b9492c399fe44a4f

    SHA512

    869ed6e2dd004036c7a4fc812cf3d29694f03c82eb1a7e5bff048d5c95c3ea6bf7bc8b4f584b9e6f96891b3a6c1eb13893fbbe6b243b6235461eb593c2539748

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2752-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2752-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2752-2-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/4168-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4168-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB