Analysis

  • max time kernel
    152s
  • max time network
    161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/11/2022, 14:29

General

  • Target
    7895f2756b492942a55e6bc0cffb7a4b03c665e0e593954a7a3353abd04babb8.exe
  • Size 380KB
  • Sample221106-rtxy5afcf2
  • SHA256 7895f2756b492942a55e6bc0cffb7a4b03c665e0e593954a7a3353abd04babb8
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • cybergate

Version
  • v1.07.5

Botnet
  • Facebook SPREAD !!

C2
  • razor1991094.no-ip.biz:82

Mutex
  • L543F7KPD32KA5

Attributes
  • enable_keylogger

    false

  • enable_message_box

    false

  • ftp_directory

    ./logs/

  • ftp_interval

    30

  • injected_process

    explorer.exe

  • install_dir

    install

  • install_file

    explorer.exe

  • install_flag

    true

  • keylogger_enable_ftp

    false

  • message_box_caption

    Remote Administration anywhere in the world.

  • message_box_title

    CyberGate

  • password

    cybergate

  • regkey_hkcu

    HKCU

  • regkey_hklm

    HKLM

Signatures

  • CyberGate, Rebhip

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

  • 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 4 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 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:3036
      • C:\Users\Admin\AppData\Local\Temp\7895f2756b492942a55e6bc0cffb7a4b03c665e0e593954a7a3353abd04babb8.exe
        "C:\Users\Admin\AppData\Local\Temp\7895f2756b492942a55e6bc0cffb7a4b03c665e0e593954a7a3353abd04babb8.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2224
        • C:\Users\Admin\AppData\Local\Temp\7895f2756b492942a55e6bc0cffb7a4b03c665e0e593954a7a3353abd04babb8.exe
          "C:\Users\Admin\AppData\Local\Temp\7895f2756b492942a55e6bc0cffb7a4b03c665e0e593954a7a3353abd04babb8.exe"
          3⤵
          • Modifies Installed Components in the registry
          • Adds Run key to start application
          • Drops file in Windows directory
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:848
          • C:\Windows\SysWOW64\explorer.exe
            explorer.exe
            4⤵
            • Modifies Installed Components in the registry
            • Suspicious use of AdjustPrivilegeToken
            PID:4948
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            4⤵
              PID:4816
            • C:\Users\Admin\AppData\Local\Temp\7895f2756b492942a55e6bc0cffb7a4b03c665e0e593954a7a3353abd04babb8.exe
              "C:\Users\Admin\AppData\Local\Temp\7895f2756b492942a55e6bc0cffb7a4b03c665e0e593954a7a3353abd04babb8.exe"
              4⤵
              • Checks computer location settings
              • Drops file in Windows directory
              • Modifies registry class
              • Suspicious use of AdjustPrivilegeToken
              PID:5040
              • C:\Windows\install\explorer.exe
                "C:\Windows\install\explorer.exe"
                5⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                PID:3464
                • C:\Windows\install\explorer.exe
                  "C:\Windows\install\explorer.exe"
                  6⤵
                  • Executes dropped EXE
                  PID:1448

      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 225KB
            • SHA256 cbfcb5782eb5f949bec0ded2b28491ccbe14d4b8593aed46bba17c76f088457a
            • MD5 SHA1 SHA512 SSDEEP

            explorer.exe

            • Path C:\Windows\install\explorer.exe
            • Size 380KB
            • SHA256 7895f2756b492942a55e6bc0cffb7a4b03c665e0e593954a7a3353abd04babb8
            • MD5 SHA1 SHA512 SSDEEP

            explorer.exe

            • Path C:\Windows\install\explorer.exe
            • Size 380KB
            • SHA256 7895f2756b492942a55e6bc0cffb7a4b03c665e0e593954a7a3353abd04babb8
            • MD5 SHA1 SHA512 SSDEEP

            explorer.exe

            • Path C:\Windows\install\explorer.exe
            • Size 380KB
            • SHA256 7895f2756b492942a55e6bc0cffb7a4b03c665e0e593954a7a3353abd04babb8
            • MD5 SHA1 SHA512 SSDEEP

            memory/848-152-0x00000000104F0000-0x0000000010555000-memory.dmp

            memory/848-157-0x0000000010560000-0x00000000105C5000-memory.dmp

            memory/848-144-0x0000000010480000-0x00000000104E5000-memory.dmp

            memory/848-139-0x0000000010410000-0x0000000010475000-memory.dmp

            memory/848-137-0x0000000000400000-0x0000000000458000-memory.dmp

            memory/848-136-0x0000000000400000-0x0000000000458000-memory.dmp

            memory/848-133-0x0000000000400000-0x0000000000458000-memory.dmp

            memory/848-135-0x0000000000400000-0x0000000000458000-memory.dmp

            memory/848-161-0x0000000000400000-0x0000000000458000-memory.dmp

            memory/1448-172-0x0000000000400000-0x0000000000458000-memory.dmp

            memory/1448-170-0x0000000000400000-0x0000000000458000-memory.dmp

            memory/1448-171-0x0000000000400000-0x0000000000458000-memory.dmp

            memory/1448-173-0x0000000000400000-0x0000000000458000-memory.dmp

            memory/4948-150-0x0000000010480000-0x00000000104E5000-memory.dmp

            memory/4948-147-0x0000000010480000-0x00000000104E5000-memory.dmp

            memory/5040-165-0x0000000010560000-0x00000000105C5000-memory.dmp

            memory/5040-162-0x0000000010560000-0x00000000105C5000-memory.dmp

            memory/5040-160-0x0000000010560000-0x00000000105C5000-memory.dmp