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Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    06/03/2024, 14:41

General

  • Target

    2024-03-06_f1d326ed03b1cb7df5aac3bbfb2a2e62_cryptolocker.exe

  • Size

    105KB

  • MD5

    f1d326ed03b1cb7df5aac3bbfb2a2e62

  • SHA1

    e5fc9f40fa8eaf6c3be2c5c557b5a607107a5ea6

  • SHA256

    31098a390af934db3da45f5999937b5044f16afc9bbaba98571f6f0b9b4e3409

  • SHA512

    bc6e2097e94ffb611368747fd3f575be32679b3fc90fa2b26d477ab7621d3210124f7b977fad971a7be147c0b89dd9a4ceaed7441f12cd99fe14950c8e32ab01

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6GksyJ:1nK6a+qdOOtEvwDpjyJ

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\2024-03-06_f1d326ed03b1cb7df5aac3bbfb2a2e62_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-06_f1d326ed03b1cb7df5aac3bbfb2a2e62_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2036
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2080

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    105KB

    MD5

    0097a2ed9c380a257d7aebfd2742dc9a

    SHA1

    87ea776b23dad4de63091db4bfa27108f9ccaf8b

    SHA256

    14607b08c60e204f7833e11f663ab647f8d6ec3db6c443b10a2e3e67bf6554ec

    SHA512

    3d716803dc39a7c07e9fe8cf540669bd7d90ef88cec4d396913cfa27ef584e0df351a8279b550d0931bdf7cf86cbace854257318740551462430eee992912931

  • memory/2036-1-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2036-0-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2036-2-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/2036-9-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2036-15-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2080-17-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2080-25-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB