Analysis

  • max time kernel
    139s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/01/2024, 10:14

General

  • Target

    2024-01-19_9d381b5999b4a3e8253306509f783bd5_cryptolocker.exe

  • Size

    68KB

  • MD5

    9d381b5999b4a3e8253306509f783bd5

  • SHA1

    925dca7237ba08e8659f96bfbf36a89fb3cef45e

  • SHA256

    66897245e4be26bd5c609db0cdad5dabc5f1ed942c4358a08eee7ad09f6660ba

  • SHA512

    91ebabb9fb539a242602880ee21e8de17cf0c46b2f60b6e50704c5bafd94587c33381ee251bbf767a7bad646a8bd3ea83cd540ffba730e76a34fe4d01ad66004

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/Rv:vj+jsMQMOtEvwDpj5HZYTjipvF248k

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\2024-01-19_9d381b5999b4a3e8253306509f783bd5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-19_9d381b5999b4a3e8253306509f783bd5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2400
    • 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:4448

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          68KB

          MD5

          24d1c495481ce2182956db700ce89207

          SHA1

          57e58f98e2820db8b1a146331713d577c4124d4f

          SHA256

          bc21ed7415e141e0c11507404d36f59f5647126872c59300ba259e4c734cb515

          SHA512

          70f1a47ae4c272ae1cc019c7a6cacd5bf484b7ed694d73fef29bae0badc0122240bffcfb1c36c2324620fb8b5a374fee61f9ee9bc655f3e948c0e079f73eb8d8

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2400-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/2400-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/2400-2-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/4448-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

          Filesize

          24KB

        • memory/4448-19-0x00000000020D0000-0x00000000020D6000-memory.dmp

          Filesize

          24KB