Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/05/2024, 04:57

General

  • Target

    2024-05-10_d38052ec8a2af54383ff72597a634328_cryptolocker.exe

  • Size

    47KB

  • MD5

    d38052ec8a2af54383ff72597a634328

  • SHA1

    33c735745440e28967228edf61bff8c9e096f502

  • SHA256

    570fba3a9dbb69757e67009b231908c8967a312440ec0dfbb49051c62800415b

  • SHA512

    3d945137d8ed38274a9a734bcbc80a75a17eb4138891814f7a1b70c5fbe364a82ffe804897c77095bc33132f066162899c7d3162d28b6a265f5acc0c5053765f

  • SSDEEP

    384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/BdmRSh:XS5nQJ24LR1bytOOtEvwDpjNbP/bmy

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • Detects executables built or packed with MPress PE compressor 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\2024-05-10_d38052ec8a2af54383ff72597a634328_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_d38052ec8a2af54383ff72597a634328_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:936
    • 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:3260

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          48KB

          MD5

          cc9387ba531df03e48aa608b9ee365be

          SHA1

          ce8aa6c3ca70f59464f9590ac9ff04fedd1934a4

          SHA256

          b36b863938c691705ce0a661eaeaf20b565f52d21926f842029b0cbb5fea6cb4

          SHA512

          aff446d4afd8a7e0baaabc9381b887c13b96d30aba753bff120229d5845defbe58744e66e69d299c3e2e0b16b41d480852a7779f701f8a2ec04d2eb01480d7a2

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/936-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/936-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/936-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/936-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/936-19-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/3260-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/3260-22-0x0000000002090000-0x0000000002096000-memory.dmp

          Filesize

          24KB

        • memory/3260-27-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/3260-51-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB