Analysis

  • max time kernel
    130s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/05/2024, 18:44

General

  • Target

    2024-05-25_1dbb7388412c46fb9930cf9bba45e45e_cryptolocker.exe

  • Size

    68KB

  • MD5

    1dbb7388412c46fb9930cf9bba45e45e

  • SHA1

    47068f6c240737a9b4473d713f401cdcec9d4b3e

  • SHA256

    9f6e7d8708c98aacbd7c068107cbeef2a55d3794527f1dfc6a25d66510e3e4af

  • SHA512

    0d3836dc75369f4893926a5352ed4c8985e5a0999a0f653e8f3aeac0bdf55007c24b9f5714a1868f0d1b3de2ad5042501a8353139a5038e02fd0f09f6ab931a2

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xFIn:6j+1NMOtEvwDpjr8ox8UDEpN/ju

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-05-25_1dbb7388412c46fb9930cf9bba45e45e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-25_1dbb7388412c46fb9930cf9bba45e45e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4700
    • 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:4568

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          68KB

          MD5

          48fac5d120af7386c0af9fc44ebb9659

          SHA1

          3528be5239e326d0d311611d24b136b3e523c25e

          SHA256

          4bee11d7a48872a1794f85abc6dacf1bd0bae2e5abf4fc2388c7f303c093b009

          SHA512

          3e44263c40e4edfec517deb0693058e733fc51426428c307bcc2bca04d6f0ad53f5d0af40c4da9b79e9e3376d639781a2e093c0e9505a939459f474e29c1a328

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/4568-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4568-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/4568-26-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/4568-49-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4700-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4700-1-0x0000000000630000-0x0000000000636000-memory.dmp

          Filesize

          24KB

        • memory/4700-2-0x0000000000650000-0x0000000000656000-memory.dmp

          Filesize

          24KB

        • memory/4700-9-0x0000000000630000-0x0000000000636000-memory.dmp

          Filesize

          24KB

        • memory/4700-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB