Analysis

  • max time kernel
    151s
  • max time network
    167s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/12/2022, 00:42

General

  • Target
    7490d4799d18b3693d5db72bb0a3b013e98aeafc5e8221b28973be24ff7a851d.exe
  • Size 351KB
  • Sample221203-a2qrcaad36
  • SHA256 7490d4799d18b3693d5db72bb0a3b013e98aeafc5e8221b28973be24ff7a851d
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • cybergate

Version
  • v1.07.5

Botnet
  • remote

C2
  • cyber334.no-ip.biz:85

Mutex
  • 1B6D1XO285D164

Attributes
  • enable_keylogger

    true

  • enable_message_box

    false

  • ftp_directory

    ./logs/

  • ftp_interval

    30

  • injected_process

    explorer.exe

  • install_dir

    install

  • install_file

    server.exe

  • install_flag

    true

  • keylogger_enable_ftp

    false

  • message_box_caption

    Remote Administration anywhere in the world.

  • message_box_title

    CyberGate

  • password

    123456

  • 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 1 IoCs
  • Modifies Installed Components in the registry 2 TTPs 4 IoCs
  • UPX packed file 16 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
  • Drops file in Program Files directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:2720
      • C:\Users\Admin\AppData\Local\Temp\7490d4799d18b3693d5db72bb0a3b013e98aeafc5e8221b28973be24ff7a851d.exe
        "C:\Users\Admin\AppData\Local\Temp\7490d4799d18b3693d5db72bb0a3b013e98aeafc5e8221b28973be24ff7a851d.exe"
        2⤵
        • Adds policy Run key to start application
        • Modifies Installed Components in the registry
        • Adds Run key to start application
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:4576
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe
          3⤵
          • Modifies Installed Components in the registry
          • Suspicious use of AdjustPrivilegeToken
          PID:1304
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          3⤵
            PID:4740
          • C:\Users\Admin\AppData\Local\Temp\7490d4799d18b3693d5db72bb0a3b013e98aeafc5e8221b28973be24ff7a851d.exe
            "C:\Users\Admin\AppData\Local\Temp\7490d4799d18b3693d5db72bb0a3b013e98aeafc5e8221b28973be24ff7a851d.exe"
            3⤵
            • Checks computer location settings
            • Drops file in Program Files directory
            • Modifies registry class
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            PID:4924
            • C:\Program Files (x86)\install\server.exe
              "C:\Program Files (x86)\install\server.exe"
              4⤵
              • Executes dropped EXE
              PID:4284
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 4284 -s 580
                5⤵
                • Program crash
                PID:2320
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4284 -ip 4284
        1⤵
          PID:1160

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              server.exe

              • Path C:\Program Files (x86)\install\server.exe
              • Size 351KB
              • SHA256 7490d4799d18b3693d5db72bb0a3b013e98aeafc5e8221b28973be24ff7a851d
              • MD5 SHA1 SHA512 SSDEEP

              server.exe

              • Path C:\Program Files (x86)\install\server.exe
              • Size 351KB
              • SHA256 7490d4799d18b3693d5db72bb0a3b013e98aeafc5e8221b28973be24ff7a851d
              • MD5 SHA1 SHA512 SSDEEP

              Admin2.txt

              • Path C:\Users\Admin\AppData\Local\Temp\Admin2.txt
              • Size 295KB
              • SHA256 505b866b7de221a251f73cc1888168a924d31fd08f79a0f4b95b1e7679787614
              • MD5 SHA1 SHA512 SSDEEP

              memory/1304-145-0x0000000010480000-0x00000000104E5000-memory.dmp

              memory/1304-142-0x0000000010480000-0x00000000104E5000-memory.dmp

              memory/4284-161-0x0000000000400000-0x000000000046B000-memory.dmp

              memory/4284-162-0x0000000000400000-0x000000000046B000-memory.dmp

              memory/4576-134-0x0000000010410000-0x0000000010475000-memory.dmp

              memory/4576-152-0x0000000010560000-0x00000000105C5000-memory.dmp

              memory/4576-156-0x0000000000400000-0x000000000046B000-memory.dmp

              memory/4576-132-0x0000000000400000-0x000000000046B000-memory.dmp

              memory/4576-139-0x0000000010480000-0x00000000104E5000-memory.dmp

              memory/4576-147-0x00000000104F0000-0x0000000010555000-memory.dmp

              memory/4924-155-0x0000000010560000-0x00000000105C5000-memory.dmp

              memory/4924-157-0x0000000000400000-0x000000000046B000-memory.dmp

              memory/4924-158-0x0000000010560000-0x00000000105C5000-memory.dmp

              memory/4924-163-0x0000000010560000-0x00000000105C5000-memory.dmp