Analysis

  • max time kernel
    168s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/11/2022, 20:20

General

  • Target
    c99f86c0a2773c6374bc086bacc6a29a720576f74abfdd24bfeeaa57e0d5f434.exe
  • Size 934KB
  • Sample221122-y4jmtabc3t
  • SHA256 c99f86c0a2773c6374bc086bacc6a29a720576f74abfdd24bfeeaa57e0d5f434
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • cybergate

Version
  • v1.07.5

Botnet
  • remote

C2
  • stoptryfindme.ddns.net:7979

Mutex
  • 0HTH02683NKC2O

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

    5996978sa

  • regkey_hkcu

    Realtek Audio HD Driver

  • 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 4 IoCs
  • Modifies Installed Components in the registry 2 TTPs 4 IoCs
  • UPX packed file 8 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 System32 directory 6 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:2596
      • C:\Users\Admin\AppData\Local\Temp\c99f86c0a2773c6374bc086bacc6a29a720576f74abfdd24bfeeaa57e0d5f434.exe
        "C:\Users\Admin\AppData\Local\Temp\c99f86c0a2773c6374bc086bacc6a29a720576f74abfdd24bfeeaa57e0d5f434.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2080
        • C:\Users\Admin\AppData\Local\Temp\c99f86c0a2773c6374bc086bacc6a29a720576f74abfdd24bfeeaa57e0d5f434.exe
          "C:\Users\Admin\AppData\Local\Temp\c99f86c0a2773c6374bc086bacc6a29a720576f74abfdd24bfeeaa57e0d5f434.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 System32 directory
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:1572
          • C:\Windows\SysWOW64\explorer.exe
            explorer.exe
            4⤵
            • Modifies Installed Components in the registry
            • Suspicious use of AdjustPrivilegeToken
            PID:2576
          • C:\Windows\SysWOW64\explorer.exe
            explorer.exe
            4⤵
            • Drops file in System32 directory
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            PID:2268
            • C:\Windows\SysWOW64\install\server.exe
              "C:\Windows\system32\install\server.exe"
              5⤵
              • Executes dropped EXE
              • Drops file in System32 directory
              • Suspicious use of SetThreadContext
              • Suspicious use of SetWindowsHookEx
              PID:208
              • C:\Windows\SysWOW64\install\server.exe
                "C:\Windows\SysWOW64\install\server.exe"
                6⤵
                • Executes dropped EXE
                PID:2732
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 2732 -s 580
                  7⤵
                  • Program crash
                  PID:2564
          • C:\Windows\SysWOW64\install\server.exe
            "C:\Windows\system32\install\server.exe"
            4⤵
            • Executes dropped EXE
            • Drops file in System32 directory
            • Suspicious use of SetThreadContext
            • Suspicious use of SetWindowsHookEx
            PID:240
            • C:\Windows\SysWOW64\install\server.exe
              "C:\Windows\SysWOW64\install\server.exe"
              5⤵
              • Executes dropped EXE
              PID:1212
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1212 -s 580
                6⤵
                • Program crash
                PID:2560
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1212 -ip 1212
      1⤵
        PID:4580
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2732 -ip 2732
        1⤵
          PID:2580

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              Admin2.txt

              • Path C:\Users\Admin\AppData\Local\Temp\Admin2.txt
              • Size 225KB
              • SHA256 3b98f871c4fc3bee56e2d18789b33c7ff6d52b85859661a6bf69ea832ebab3df
              • MD5 SHA1 SHA512 SSDEEP

              server.exe

              • Path C:\Windows\SysWOW64\install\server.exe
              • Size 934KB
              • SHA256 c99f86c0a2773c6374bc086bacc6a29a720576f74abfdd24bfeeaa57e0d5f434
              • MD5 SHA1 SHA512 SSDEEP

              server.exe

              • Path C:\Windows\SysWOW64\install\server.exe
              • Size 934KB
              • SHA256 c99f86c0a2773c6374bc086bacc6a29a720576f74abfdd24bfeeaa57e0d5f434
              • MD5 SHA1 SHA512 SSDEEP

              server.exe

              • Path C:\Windows\SysWOW64\install\server.exe
              • Size 934KB
              • SHA256 c99f86c0a2773c6374bc086bacc6a29a720576f74abfdd24bfeeaa57e0d5f434
              • MD5 SHA1 SHA512 SSDEEP

              server.exe

              • Path C:\Windows\SysWOW64\install\server.exe
              • Size 934KB
              • SHA256 c99f86c0a2773c6374bc086bacc6a29a720576f74abfdd24bfeeaa57e0d5f434
              • MD5 SHA1 SHA512 SSDEEP

              server.exe

              • Path C:\Windows\SysWOW64\install\server.exe
              • Size 934KB
              • SHA256 c99f86c0a2773c6374bc086bacc6a29a720576f74abfdd24bfeeaa57e0d5f434
              • MD5 SHA1 SHA512 SSDEEP

              memory/1212-183-0x0000000000400000-0x0000000000451000-memory.dmp

              memory/1212-181-0x0000000000400000-0x0000000000451000-memory.dmp

              memory/1572-141-0x0000000000400000-0x0000000000451000-memory.dmp

              memory/1572-140-0x0000000000400000-0x0000000000451000-memory.dmp

              memory/1572-157-0x00000000104F0000-0x0000000010555000-memory.dmp

              memory/1572-148-0x0000000010480000-0x00000000104E5000-memory.dmp

              memory/1572-143-0x0000000010410000-0x0000000010475000-memory.dmp

              memory/1572-139-0x0000000000400000-0x0000000000451000-memory.dmp

              memory/1572-138-0x0000000000400000-0x0000000000451000-memory.dmp

              memory/1572-165-0x0000000000400000-0x0000000000451000-memory.dmp

              memory/2268-184-0x00000000104F0000-0x0000000010555000-memory.dmp

              memory/2268-170-0x00000000104F0000-0x0000000010555000-memory.dmp

              memory/2268-160-0x00000000104F0000-0x0000000010555000-memory.dmp

              memory/2576-151-0x0000000010480000-0x00000000104E5000-memory.dmp

              memory/2576-154-0x0000000010480000-0x00000000104E5000-memory.dmp

              memory/2732-179-0x0000000000400000-0x0000000000451000-memory.dmp

              memory/2732-182-0x0000000000400000-0x0000000000451000-memory.dmp

              memory/2732-185-0x0000000000400000-0x0000000000451000-memory.dmp

              memory/2732-186-0x0000000000400000-0x0000000000451000-memory.dmp