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Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/02/2024, 07:43

General

  • Target

    2024-02-23_948e154fe35275569e40b95b10b3b5b8_cryptolocker.exe

  • Size

    38KB

  • MD5

    948e154fe35275569e40b95b10b3b5b8

  • SHA1

    33030bf79596579e3861084a2440bc0705b3e1ad

  • SHA256

    6f3c3e58647a3d22b76200e5455860af444ad0700336eddc855a7e2ae0d2fc6d

  • SHA512

    a5be72f41becd8c09d7161984dfcf2d401bd00d1b6d6fd6ae9525b9d44e33b8763b2ebea8eeb504cf8cf3c325dbacda88b2204c0904ea789609012b5750e2893

  • SSDEEP

    768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHu8K7:X6QFElP6n+gJQMOtEvwDpjBmzDkz7

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 1 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\2024-02-23_948e154fe35275569e40b95b10b3b5b8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-23_948e154fe35275569e40b95b10b3b5b8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3872
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2292

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    22518f855acbc29f68773aca2d2b8d0f

    SHA1

    172c96bec7b9cf27136732d64678feb4066be1a9

    SHA256

    9e9a6fbdc0f4fe97fe02499a4e20caf9b8f169131f5ed28a705803d766119785

    SHA512

    8cd22126d58b7391306f2b9e5d771a1d2ebebc31db9380b515f7ae4deca0d492fcadbf9ac872de589fbc136c1a2a71d5cb71c7bc26559369dc7f344a2f4a1a83

  • memory/2292-17-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2292-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3872-0-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/3872-1-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/3872-2-0x0000000002230000-0x0000000002236000-memory.dmp

    Filesize

    24KB