Analysis

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

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/05/2024, 14:59

General

  • Target

    2024-05-11_aad937bae4cc2ea01747ac0344e8df30_cryptolocker.exe

  • Size

    66KB

  • MD5

    aad937bae4cc2ea01747ac0344e8df30

  • SHA1

    14b9d37f0e76b5c883f91dc1d15eca2ebc1abe51

  • SHA256

    ce66528a527056942a2fd10d87b6496edcc9327ebb493b4c8f2d1e7118f2809c

  • SHA512

    466875d737d585c522a920e69997cf0ece81fad3bba14e56566b1d7949fe4d1b57b44d358bdd5167719847c05f678c8ee271edf560ab59fbeab2fd18398f1496

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2l9tMPvdfGyR:TCjsIOtEvwDpj5HE/OUHnSMYe

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 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\2024-05-11_aad937bae4cc2ea01747ac0344e8df30_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-11_aad937bae4cc2ea01747ac0344e8df30_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1176
    • 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:3552

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          66KB

          MD5

          36168a8dd6cd0c8e917f8501abfa8745

          SHA1

          e20c813b7dd2433c5ca5c5a886acab851dc53b28

          SHA256

          2337f1dc9cd76d0367db5d47004d4d8d036363bbd67a74c99db42613393f0607

          SHA512

          ddf8de342eb62ce950c4738013ecdbff449358a657aecb8076a7f1fcced462c7f5fda34665eed487d956601325ab8256119398c2f790a4fd50d27747f1081ae2

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1176-0-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/1176-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/1176-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/1176-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/1176-25-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/3552-17-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/3552-19-0x0000000002110000-0x0000000002116000-memory.dmp

          Filesize

          24KB

        • memory/3552-26-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

          Filesize

          24KB

        • memory/3552-49-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB