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Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    13/02/2024, 14:54

General

  • Target

    2024-02-13_dfc68a4422144377f4a7e8dab62aef32_cryptolocker.exe

  • Size

    80KB

  • MD5

    dfc68a4422144377f4a7e8dab62aef32

  • SHA1

    e52f5fcd63471fd930d5999cc62505fb17dd8b69

  • SHA256

    efa9a28bda455561043ccddca4fe61d76b4f2dc14d2e2cae7ef96957b8df7d57

  • SHA512

    f467998cae25617f6f440182d29dc7fd29e47f29f686ff3772ea5b84ae37dbbd0968bd723c4af9ae86655d823a761b92f4e17873a15fc5143140f0df1917b734

  • SSDEEP

    1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBd0nJ:T6a+rdOOtEvwDpjNtK

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 6 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\2024-02-13_dfc68a4422144377f4a7e8dab62aef32_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-13_dfc68a4422144377f4a7e8dab62aef32_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1588
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2764

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    80KB

    MD5

    41a177f8c44a7f18855c9e12482d5a0e

    SHA1

    be4ac75d4ed311ae55d03acdf79bb6cbbfc417b8

    SHA256

    5ad4b079bbc3c87380971bb6281b8c302ab527332e197db7c4ebb6cbbb893090

    SHA512

    94bfe8cb4ad073886878fc59d717229750da367b599564dd71ae85a731728ad69936e5c422247a509b06cadce5c967c750bb5415da5b973fc3c82bc1c9234dc8

  • memory/1588-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1588-1-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/1588-2-0x0000000000360000-0x0000000000366000-memory.dmp

    Filesize

    24KB

  • memory/1588-3-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/1588-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1588-14-0x0000000001EF0000-0x0000000001F00000-memory.dmp

    Filesize

    64KB

  • memory/1588-27-0x0000000001EF0000-0x0000000001F00000-memory.dmp

    Filesize

    64KB

  • memory/2764-20-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2764-19-0x0000000000370000-0x0000000000376000-memory.dmp

    Filesize

    24KB

  • memory/2764-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2764-28-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB