Analysis

  • max time kernel
    140s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/02/2024, 07:27

General

  • Target

    2024-02-02_48d8d471b05eb3156b4ba33dea67f5d7_cryptolocker.exe

  • Size

    45KB

  • MD5

    48d8d471b05eb3156b4ba33dea67f5d7

  • SHA1

    54b16bc89c730adff344160f2e869c0113e6b194

  • SHA256

    2b8884af437269caefd2e4d750e6e3efdf7718c62b7abc1147c237056f395939

  • SHA512

    eb1c0b18fd761f6b69b0eaa6174158a6e53f52b978cb3da6568245ad9ea24ec6c16a9a40040ff08d76bbc8c84d93b72af55957740600ff3426cac519233e2d8f

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr46xdUUujKeY:vj+jsMQMOtEvwDpj5Hczer5ixjKeY

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\2024-02-02_48d8d471b05eb3156b4ba33dea67f5d7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-02_48d8d471b05eb3156b4ba33dea67f5d7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4968
    • 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:5108

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          45KB

          MD5

          35ca7aabd34d7cf71781883f1cf5e8de

          SHA1

          10070a085f96ca072d522bfcbe786d2223cc3f57

          SHA256

          955bd16490f935a1747302e8f756278a6360c7606b920f0ea0406e401deb5b29

          SHA512

          62600b590083276e876182e1c29bdfd2179c0139605e5257a6a50389802c4976affd86f571f6f912c962e30853b74a82fd01beb2600147b31131e8ee2cb13c7f

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/4968-0-0x00000000021A0000-0x00000000021A6000-memory.dmp

          Filesize

          24KB

        • memory/4968-1-0x00000000021A0000-0x00000000021A6000-memory.dmp

          Filesize

          24KB

        • memory/4968-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

          Filesize

          24KB

        • memory/5108-17-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/5108-18-0x00000000006D0000-0x00000000006D6000-memory.dmp

          Filesize

          24KB