Analysis

  • max time kernel
    142s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/05/2024, 22:25

General

  • Target

    2024-05-31_1ce2c0b8d77ffd13653c5afa634f114f_cryptolocker.exe

  • Size

    38KB

  • MD5

    1ce2c0b8d77ffd13653c5afa634f114f

  • SHA1

    7eb4c6b3b0dad1aed49bae1b74ab78a167016150

  • SHA256

    bc186dcdae8446dad85fc97639773988ef18461d3b8189e8194cea610bf37bfa

  • SHA512

    f5b72682d5d2fdd56be74b97de6884d80b4bf98a1ab81c0df4a8facade074f9423ca99d23eca325c22198c09d3c9d239ed5f494b7c2192a3fdd6c5edfa828cf8

  • SSDEEP

    768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0WZyZ:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X3

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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-31_1ce2c0b8d77ffd13653c5afa634f114f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-31_1ce2c0b8d77ffd13653c5afa634f114f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3580
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:1320

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          39KB

          MD5

          c1d095af0b46a5ccb43fec70eac0c75f

          SHA1

          08f211b69dbd49cf4d94b5b31918cff06f1b15f4

          SHA256

          89dc2ea3a8da23b28c8e5a2d4928041c9ee46a9b9472afa4f56ccef4464f7d82

          SHA512

          21a3737bf9f23e93fe2f1fa8c1d11c306dad1c4a7554388adadef7363e0a2dbae9a23fe375ae79a6faa88c7b4a694b74ecd1bdebd99171d2da3c67b898068e24

        • memory/1320-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/3580-0-0x0000000000590000-0x0000000000596000-memory.dmp

          Filesize

          24KB

        • memory/3580-1-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/3580-8-0x0000000000590000-0x0000000000596000-memory.dmp

          Filesize

          24KB