Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-05-2024 03:36

General

  • Target

    2024-05-24_47bcfd6051173519efca4fbfecf5b07f_cryptolocker.exe

  • Size

    53KB

  • MD5

    47bcfd6051173519efca4fbfecf5b07f

  • SHA1

    28071a5b441a86f5907ac2ed949c354eaf146b85

  • SHA256

    efca6a2877ff4a51ece17e81ca62aecfc40aa5c2b94ab724713fe8e0f9c36628

  • SHA512

    e889d65c16610061476cb1d2fb7e64d779dc3521502304601c1af71daa39acffcc4b2b6b1b35659a9138d522cfe7052cd7fe293b206b99825f170d7eb6acdd9b

  • SSDEEP

    768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOeV/:z6QFElP6n+gKmddpMOtEvwDpj31ieN

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-05-24_47bcfd6051173519efca4fbfecf5b07f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_47bcfd6051173519efca4fbfecf5b07f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2280
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    53KB

    MD5

    e56eecad5887c0dadbacb73c69596d26

    SHA1

    288f6fdc1fa20a67651404a13396a909bc58f6e6

    SHA256

    53b65dff187c1f268b5546cc9f5d42049f2471b2ad2073a7f3408540e0d65588

    SHA512

    5f9134ab723d600278b92a22aba1f301dd90a3c3dc360946680eae207b5a2812ecd4ff7f099d87a80de757e8826711d0f67ad61ef26978ca4e8c11c92a7035d0

  • memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2280-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2280-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2280-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/2280-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2776-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2776-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2776-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2776-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB