Analysis

  • max time kernel
    134s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/01/2024, 05:42

General

  • Target

    2024-01-24_565051aa18b8beb97f14d78d080d3b57_cryptolocker.exe

  • Size

    47KB

  • MD5

    565051aa18b8beb97f14d78d080d3b57

  • SHA1

    dd0b95e4005b96f6a400af2fbe07cb653d2f0e8d

  • SHA256

    783f25dbd68ae7b26fe7063b961e9d315761843b1c6dfbc4191fc72a74341eb8

  • SHA512

    825a44db36aaaa194d8569524b72441703d89a9e4576bd4ae21197aa31da5ed0aed093f9e53124926eb8ea0da59f0ba1124f3346bf3ebd11795efeb3cdc3558e

  • SSDEEP

    384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/7IVth4:XS5nQJ24LR1bytOOtEvwDpjNbP/MPQL

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-01-24_565051aa18b8beb97f14d78d080d3b57_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-24_565051aa18b8beb97f14d78d080d3b57_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3988
    • 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:3372

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          47KB

          MD5

          39e69e41f1814a4b37904729b76a9b69

          SHA1

          80271503621aabee868e5905255a1b47be333ff8

          SHA256

          2d64c4ee1e2c38982de5656be97c34309b20db47e86654b02e33b4ecb4a3b5dc

          SHA512

          4606042220e78d763d861ee067827607d2f9b97308bd269cb9a383de5fe2c5763244b4b5bfaca40b7c8ad086e6a853846205fe86c0b47d7e5afe862be2518322

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3372-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/3372-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/3372-50-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/3988-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/3988-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

          Filesize

          24KB

        • memory/3988-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

          Filesize

          24KB

        • memory/3988-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

          Filesize

          24KB

        • memory/3988-10-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB