Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 06:34

General

  • Target

    2024-06-10_ed2bd2daae3486f51c23fe80661c4916_cryptolocker.exe

  • Size

    70KB

  • MD5

    ed2bd2daae3486f51c23fe80661c4916

  • SHA1

    6ea8859a4072ffae114e7c80d62578ac00d27972

  • SHA256

    a566e1b073ffbe77db3ad7b456abd3a7531a18679333b731568a3d509f9b2681

  • SHA512

    4bb7ef2cc0a9bc8fede21338dc8441130d8ed9720cd387c12530dc002a0b3b61ea6be6e7ba8e7574e4dc62014dea5bf38cabb2771edcf86a266682bad1da3e2c

  • SSDEEP

    768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1PX:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAX

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\2024-06-10_ed2bd2daae3486f51c23fe80661c4916_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_ed2bd2daae3486f51c23fe80661c4916_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1304
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:512

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          70KB

          MD5

          e641ad5dfc1a0e785bc6ea1430012a01

          SHA1

          bebbd3e1e1d2db8544cceeece9812721afc61694

          SHA256

          8fcf55523cf0ad5ba36407b910ea3288f684aafffc2152201f2c49d245022e6f

          SHA512

          ad29528acb9fc4d0c6c862c360f78250d82246390c4cf41583552725ee49f84899afb854b2f542583aeeffe311b94319395f02ac9e031591c06f65d86e6cf5ef

        • memory/512-27-0x00000000006B0000-0x00000000006B6000-memory.dmp

          Filesize

          24KB

        • memory/512-21-0x0000000000860000-0x0000000000866000-memory.dmp

          Filesize

          24KB

        • memory/512-19-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/512-28-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/1304-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/1304-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/1304-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/1304-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/1304-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB