Analysis

  • max time kernel
    93s
  • max time network
    100s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/04/2024, 10:33

General

  • Target

    2024-04-28_f3d4965a9f32cd295d03a0b5d8800f2d_cryptolocker.exe

  • Size

    53KB

  • MD5

    f3d4965a9f32cd295d03a0b5d8800f2d

  • SHA1

    5cf51953e3eaa7cb1d4ce9a18ca5dc77f1f81fa1

  • SHA256

    00252130259466750a023dbbc70710e21373c826af84a9985cd9ae39b49867ec

  • SHA512

    76217372b56e87f480dcede0539ace81d2aeb413cfd9feb3b261116ef5395c83f81c3a889dbb4d1d7836760abb0ca373d2e3a104ca5881c1c662ed61edc6bc90

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdO5US:ZVxkGOtEvwDpjcb

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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-28_f3d4965a9f32cd295d03a0b5d8800f2d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-28_f3d4965a9f32cd295d03a0b5d8800f2d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2492
    • 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:2188

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          53KB

          MD5

          8ea286d2597a25b931649020d6e93360

          SHA1

          9aa6c366755cc45111a9e53743b3665160b4ae54

          SHA256

          55b70a1ceb92017b9596fa5e1d72dacaa3046bfd57791949f9445caaae819e96

          SHA512

          512ef1d4390acef7324a2908b00953052cca425ad816151907278b376c3d21482e2784b82df5dacfdd4cca3c1a81c467ca4d453ab54f2700d1987910a7fcc2bc

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2188-21-0x00000000020E0000-0x00000000020E6000-memory.dmp

          Filesize

          24KB

        • memory/2188-20-0x00000000021D0000-0x00000000021D6000-memory.dmp

          Filesize

          24KB

        • memory/2188-19-0x00000000004F0000-0x00000000004F3000-memory.dmp

          Filesize

          12KB

        • memory/2492-0-0x00000000004F0000-0x00000000004F3000-memory.dmp

          Filesize

          12KB

        • memory/2492-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

          Filesize

          24KB

        • memory/2492-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

          Filesize

          24KB

        • memory/2492-9-0x00000000020D0000-0x00000000020D6000-memory.dmp

          Filesize

          24KB

        • memory/2492-17-0x00000000004F0000-0x00000000004F3000-memory.dmp

          Filesize

          12KB