Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    04-05-2024 20:15

General

  • Target

    2024-05-04_be31d9b74f3a8069072de65c25af5a09_cryptolocker.exe

  • Size

    38KB

  • MD5

    be31d9b74f3a8069072de65c25af5a09

  • SHA1

    9e153b30cdf6499950ac2d071d4f049c49787a2d

  • SHA256

    d1743549423b83eea8561b39e178d4dde85f37340d57d164e8adabe391933d71

  • SHA512

    77f8de7763ea926fd38e49bc209066af2e2d5d707a387f9dbc43621f19a7789df08e7a0011ed3b50592643acd2559654857765f8a61200fe94636fc56303e7c8

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY8:qDdFJy3QMOtEvwDpjjWMl7Tx

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
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-04_be31d9b74f3a8069072de65c25af5a09_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-04_be31d9b74f3a8069072de65c25af5a09_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2584
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2608

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    c31467e9b71025306efcda7ac077b154

    SHA1

    6fceba3f46823f01f5e461fbfe922114e5e3815f

    SHA256

    b0525cce069e6f22ce1dae95eafd9310e827f8eba9637d01c1a81af2e3a6c02a

    SHA512

    11d4604357ca72ed064ec4f63f4515eae211c6dea6712a9cca792456717a7a1f2fb88530b35b4f0389529d85d9a94c4b20eb1c5e626ce163c5b920fe71e81029

  • memory/2584-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2584-2-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/2584-1-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2584-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2584-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2608-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2608-19-0x0000000000390000-0x0000000000396000-memory.dmp

    Filesize

    24KB

  • memory/2608-26-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2608-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB