Analysis

  • max time kernel
    91s
  • 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
    11/06/2024, 02:29

General

  • Target

    2024-06-11_f4d590783aa8198108ab47c243a25950_cryptolocker.exe

  • Size

    82KB

  • MD5

    f4d590783aa8198108ab47c243a25950

  • SHA1

    3b0f0406a92ff0375ae5fdfcbf4177275c9814b9

  • SHA256

    9650a7ffe07f58cb7d6a4faf613f0451ce0d593945d345b0fcb02cc6c6c6804f

  • SHA512

    00a083c49ae82ce825dccc2f6ae9bfd9cce7c8048ccb16826d369a0595e03a81a1b3d0669072299d9986a55c0b65e5947387afff8de56fd7c27f166c9ac39eca

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNqO:vCjsIOtEvwDpj5H9YvQd2T

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\2024-06-11_f4d590783aa8198108ab47c243a25950_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_f4d590783aa8198108ab47c243a25950_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2684
    • 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:3336

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          83KB

          MD5

          d8f01b7789f3a8b806c26a3d089209a6

          SHA1

          73d0a672cf244b81db65884f91d9d3df9b3f5a60

          SHA256

          0f97b5f86658abd848caf9b8b31685316e64bd52032018e81d104d610acf9f13

          SHA512

          3e4d8d4aaf444b5588ff25676a85046e9d14f25a2d96621201c8153b87782c6455ef343c5dd4ebbfeb1d322c14cf2101dce49d5ef51551f4ea1e072a7b5483f0

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2684-0-0x0000000000620000-0x0000000000626000-memory.dmp

          Filesize

          24KB

        • memory/2684-1-0x0000000000750000-0x0000000000756000-memory.dmp

          Filesize

          24KB

        • memory/2684-8-0x0000000000620000-0x0000000000626000-memory.dmp

          Filesize

          24KB

        • memory/3336-23-0x0000000002050000-0x0000000002056000-memory.dmp

          Filesize

          24KB

        • memory/3336-17-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB