Analysis

  • max time kernel
    156s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/11/2022, 02:55

General

  • Target
    fd93be899558e738ccabc47324f3c65743e3d38f7415b5f1993215fad914107c.exe
  • Size 460KB
  • Sample221124-dew7dscf94
  • SHA256 fd93be899558e738ccabc47324f3c65743e3d38f7415b5f1993215fad914107c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • cybergate

Version
  • v3.4.2.2

Botnet
  • banorte

C2
  • nortiux.zapto.org:81

  • bnortiux.com:81

Mutex
  • Q8UKI0IQ7CO8U5

Attributes
  • enable_keylogger

    true

  • enable_message_box

    false

  • ftp_directory

    ./logs

  • ftp_interval

    30

  • injected_process

    explorer.exe

  • install_dir

    update

  • install_file

    chrome.exe

  • install_flag

    true

  • keylogger_enable_ftp

    false

  • message_box_caption

    Remote Administration anywhere in the world.

  • message_box_title

    CyberGate

  • password

    amerika

  • regkey_hkcu

    HKCU

  • regkey_hklm

    HKLM

Signatures

  • CyberGate, Rebhip

    CyberGate is a lightweight remote administration tool with a wide array of functionalities.

  • Adds policy Run key to start application 2 TTPs 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Modifies Installed Components in the registry 2 TTPs 4 IoCs
  • UPX packed file 18 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:2752
      • C:\Users\Admin\AppData\Local\Temp\fd93be899558e738ccabc47324f3c65743e3d38f7415b5f1993215fad914107c.exe
        "C:\Users\Admin\AppData\Local\Temp\fd93be899558e738ccabc47324f3c65743e3d38f7415b5f1993215fad914107c.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3544
        • C:\Users\Admin\AppData\Local\Temp\fd93be899558e738ccabc47324f3c65743e3d38f7415b5f1993215fad914107c.exe
          "C:\Users\Admin\AppData\Local\Temp\fd93be899558e738ccabc47324f3c65743e3d38f7415b5f1993215fad914107c.exe"
          3⤵
          • Adds policy Run key to start application
          • Modifies Installed Components in the registry
          • Checks computer location settings
          • Adds Run key to start application
          • Drops file in Windows directory
          • Modifies registry class
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:872
          • C:\Windows\SysWOW64\explorer.exe
            explorer.exe
            4⤵
            • Modifies Installed Components in the registry
            PID:4188
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
            4⤵
              PID:3508
            • C:\Windows\SysWOW64\explorer.exe
              explorer.exe
              4⤵
              • Drops file in Windows directory
              • Suspicious use of AdjustPrivilegeToken
              PID:3676
            • C:\Windows\update\chrome.exe
              "C:\Windows\update\chrome.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious use of SetWindowsHookEx
              PID:3880
              • C:\Windows\update\chrome.exe
                "C:\Windows\update\chrome.exe"
                5⤵
                • Executes dropped EXE
                PID:2248

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            Admin2.txt

            • Path C:\Users\Admin\AppData\Local\Temp\Admin2.txt
            • Size 385KB
            • SHA256 681d44c266f2ad489c02b5462144d0684eb4cba442ece4743670fbf8ae9b8f93
            • MD5 SHA1 SHA512 SSDEEP

            chrome.exe

            • Path C:\Windows\update\chrome.exe
            • Size 460KB
            • SHA256 fd93be899558e738ccabc47324f3c65743e3d38f7415b5f1993215fad914107c
            • MD5 SHA1 SHA512 SSDEEP

            chrome.exe

            • Path C:\Windows\update\chrome.exe
            • Size 460KB
            • SHA256 fd93be899558e738ccabc47324f3c65743e3d38f7415b5f1993215fad914107c
            • MD5 SHA1 SHA512 SSDEEP

            chrome.exe

            • Path C:\Windows\update\chrome.exe
            • Size 460KB
            • SHA256 fd93be899558e738ccabc47324f3c65743e3d38f7415b5f1993215fad914107c
            • MD5 SHA1 SHA512 SSDEEP

            memory/872-165-0x0000000000400000-0x0000000000475000-memory.dmp

            memory/872-160-0x0000000010560000-0x00000000105D0000-memory.dmp

            memory/872-135-0x0000000000400000-0x0000000000475000-memory.dmp

            memory/872-146-0x0000000010480000-0x00000000104F0000-memory.dmp

            memory/872-137-0x0000000000400000-0x0000000000475000-memory.dmp

            memory/872-151-0x0000000000400000-0x0000000000475000-memory.dmp

            memory/872-139-0x0000000000400000-0x0000000000475000-memory.dmp

            memory/872-138-0x0000000000400000-0x0000000000475000-memory.dmp

            memory/872-155-0x00000000104F0000-0x0000000010560000-memory.dmp

            memory/872-141-0x0000000010410000-0x0000000010480000-memory.dmp

            memory/2248-176-0x0000000000400000-0x0000000000475000-memory.dmp

            memory/2248-178-0x0000000000400000-0x0000000000475000-memory.dmp

            memory/3676-163-0x0000000010560000-0x00000000105D0000-memory.dmp

            memory/3676-164-0x0000000010560000-0x00000000105D0000-memory.dmp

            memory/3676-179-0x0000000010560000-0x00000000105D0000-memory.dmp

            memory/4188-150-0x0000000010480000-0x00000000104F0000-memory.dmp

            memory/4188-149-0x0000000010480000-0x00000000104F0000-memory.dmp

            memory/4188-177-0x0000000010480000-0x00000000104F0000-memory.dmp