Analysis

  • max time kernel
    151s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    05-04-2024 15:38

General

  • Target

    2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe

  • Size

    117KB

  • MD5

    6ace1909b66e50b571440485fd8ded79

  • SHA1

    eaee3e4b9321b413459da0be45d787b63e744f49

  • SHA256

    cf488cd3731d05806b7334b2e6f8b57d947eab17d439be0c0be58b9e9f506a0d

  • SHA512

    2a0666edfba678010326ed32301fdd5f99d68e996d7561230dbc7ad3c128baeb942980e29f9b12291e454d0e8e985c26b65d44b7e3a61ae6d89188f6ac61bb2c

  • SSDEEP

    1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp010:z6a+CdOOtEvwDpjczi

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\2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2432
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2152

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    118KB

    MD5

    98c7481c7432c2160514b56c8e6d0750

    SHA1

    1659466c3bed09708d44687bed57fb9814c2bf1a

    SHA256

    23f5f99911128011fd57475fc87da7130c0e95bbd33ea06130436cafdaa00ea3

    SHA512

    768b3def48230d5a5a685f2857f4c8142024c4d428462b0d5adcec8b7afd7932c9bc3f8e620646e4bfefa7de23ab99b2ba255fab1e83aaaa09a710c4f41b0653

  • memory/2152-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2152-18-0x0000000000420000-0x0000000000426000-memory.dmp

    Filesize

    24KB

  • memory/2152-19-0x0000000000450000-0x0000000000456000-memory.dmp

    Filesize

    24KB

  • memory/2152-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2432-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2432-2-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/2432-6-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2432-14-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB