Analysis

  • max time kernel
    135s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/05/2024, 03:49

General

  • Target

    2024-05-26_a40925c052f28e4efc4c97bbd32430c8_cryptolocker.exe

  • Size

    87KB

  • MD5

    a40925c052f28e4efc4c97bbd32430c8

  • SHA1

    c11a37112e71a33b009e4ca3b3c20cbf361c0cbc

  • SHA256

    52dd67e01fc6a7c5da5e08ecfa7ba7bbbe8abe465c68d47f2e4ad977efc07892

  • SHA512

    cad86a33cda7af2b28ad05464ea3f87c802a8a716334b072e46d349e346e93b322d48a5017fb5898165f287971dc038fb7b4be0a314b14c565cf77eab173e5af

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNBlE:vCjsIOtEvwDpj5H9YvQd2y

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\2024-05-26_a40925c052f28e4efc4c97bbd32430c8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-26_a40925c052f28e4efc4c97bbd32430c8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1332
    • 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:1716

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          87KB

          MD5

          4cf38c8e04e5bdac9bd102536457edee

          SHA1

          8c891a3161ff923e0780718bd28817865f692056

          SHA256

          c88b8c810d60a8ce17ac62881d94e2a5b65890953d00a77aba39ebaf101035a9

          SHA512

          7c877d59ca6377c97235d0696b6bee4779515758ae7c1d0d06fee2309316dbde0476eb2c14a3a334f51859310cc678ab4ea704ab1a5687469625b7b8d1f8775a

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1332-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/1332-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/1332-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/1716-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

          Filesize

          24KB

        • memory/1716-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB