Analysis

  • max time kernel
    140s
  • max time network
    161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/01/2024, 05:59

General

  • Target

    2024-01-11_5bf470a6ea3b8820a623caff86788cf5_cryptolocker.exe

  • Size

    39KB

  • MD5

    5bf470a6ea3b8820a623caff86788cf5

  • SHA1

    fd10fed142478f0aa9cc3bb4d4f1ed58a1612c8b

  • SHA256

    d92f964f864740086fa40da84807ae5f59ed07314f1e90a619e9a2b6646c0495

  • SHA512

    d8603e85aa84fede4d28a05f2b704eb58b18afb38ce41fb12db0561a8e6f47025fd3e3a863021452208f46d0e601ffff7a265657c43a0bbe45106e6f7a57ec90

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqhMWKay9xD:6j+1NMOtEvwDpjroKv

Score
7/10

Malware Config

Signatures

  • 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\2024-01-11_5bf470a6ea3b8820a623caff86788cf5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-11_5bf470a6ea3b8820a623caff86788cf5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2020
    • 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:3212

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          39KB

          MD5

          c7472286341d6184dca51c761454f331

          SHA1

          e53ee2d560b94b3607cb3355f1f0225e677a5bb0

          SHA256

          a1ac34b1346c9ad1fe738a3dbcfe74ce70cb209271eb2b019098404760a71fe2

          SHA512

          a0cea538731aa91974c47eb688d5497e4c0e260b0590dceba5b883cbdc3f0e2ff1fb50bf4c0394c1f195fe6ea8c9074453f3d9f85fb32946df1bf5e2fdd639d7

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2020-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/2020-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/2020-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/2020-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/2020-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/3212-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/3212-20-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/3212-22-0x0000000002050000-0x0000000002056000-memory.dmp

          Filesize

          24KB

        • memory/3212-49-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB