Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/10/2024, 15:29

General

  • Target

    CrackCaptchaClient.dll

  • Size

    280KB

  • MD5

    10c6b2a888dae933f188f686d76ce5c2

  • SHA1

    383a2b6097696305b000001cbded794187b7b916

  • SHA256

    37180a512b8c2765437d720b0860f87029a68832dc85d7da5d620f1287024604

  • SHA512

    f30d23ee8cdd646ba0cd6f18e54489df724bde1be59865166559c2590c520f6c4f9bc0e2cb1d15632b086bdc4948d349ac79e891f18391be7106fb87a5fb3d93

  • SSDEEP

    3072:FqEKLbEzobFXPq7n1PE9tJjn9M3qL8oAyhYzLOs8ZljeLa0DDMsK3wglv6n8lEi:ghszwA8ju3p/yhYQRenDMTH6c9

Malware Config

Signatures

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\CrackCaptchaClient.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1228
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\CrackCaptchaClient.dll,#1
      2⤵
      • Writes to the Master Boot Record (MBR)
      • System Location Discovery: System Language Discovery
      PID:3780
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3780 -s 672
        3⤵
        • Program crash
        PID:2436
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3780 -ip 3780
    1⤵
      PID:3152

    Network

          MITRE ATT&CK Enterprise v15

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          Downloads