Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/05/2024, 23:22

General

  • Target

    2024-05-27_2169b999d3765f47febbb01d4889b342_cryptolocker.exe

  • Size

    41KB

  • MD5

    2169b999d3765f47febbb01d4889b342

  • SHA1

    65ef237c2bf3d210809137cbb79ea864edcd45b1

  • SHA256

    6cdc0c1d0755933dda24b6570c2d81bf54b31e481d22245050c52dbaf3f6d3cc

  • SHA512

    2a5a1f608dc8537178a66fbf231b6c46a9813d2f1f3d16047b2e01386e432c88be83111e89b29fb2b587081d792905aa7ecef04e5a3e554109e5b42521740e4d

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDka:ZzFbxmLPWQMOtEvwDpjLeJAsKcN

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-27_2169b999d3765f47febbb01d4889b342_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_2169b999d3765f47febbb01d4889b342_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4260
    • 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:1624

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          41KB

          MD5

          dd40fc75fb7d4335096f5f88c6b08784

          SHA1

          2436e5f328dccc9ff702d439c933c51352c03a27

          SHA256

          0818af8c25129edf86bfe6ce1e8d63a143a1328a63256cb44171cb8c507e1611

          SHA512

          30e4620143ee0c859492e17760df06b65985cd0329ed0b2cae87f8d18b28b2452b9b64a1f9de2764623e6e4513c154a5c80e3a90d45901f95d931a3504553348

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1624-17-0x0000000000450000-0x0000000000490000-memory.dmp

          Filesize

          256KB

        • memory/1624-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/1624-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4260-1-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/4260-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/4260-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

          Filesize

          24KB

        • memory/4260-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/4260-19-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB