Analysis

  • max time kernel
    187s
  • max time network
    207s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/10/2022, 22:10

General

  • Target
    2a73df1149f6c108c4b4185f9fa1c04fd8574382321be3345e84f2ee718ed50c.exe
  • Size 328KB
  • Sample221020-13rcdaggb8
  • SHA256 2a73df1149f6c108c4b4185f9fa1c04fd8574382321be3345e84f2ee718ed50c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • cybergate

Version
  • 2.6

Botnet
  • vítima

C2
  • your_dns_here:81

  • 127.0.0.1:81

Mutex
  • ***MUTEX***

Attributes
  • enable_keylogger

    true

  • enable_message_box

    false

  • ftp_directory

    ./logs/

  • ftp_interval

    30

  • injected_process

    explorer.exe

  • install_dir

    spynet

  • install_file

    server.exe

  • install_flag

    true

  • keylogger_enable_ftp

    false

  • message_box_caption

    texto da mensagem

  • message_box_title

    título da mensagem

  • password

    abcd1234

  • 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 9 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 4 IoCs
  • Suspicious use of SetThreadContext 2 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: GetForegroundWindowSpam 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:2976
      • C:\Users\Admin\AppData\Local\Temp\2a73df1149f6c108c4b4185f9fa1c04fd8574382321be3345e84f2ee718ed50c.exe
        "C:\Users\Admin\AppData\Local\Temp\2a73df1149f6c108c4b4185f9fa1c04fd8574382321be3345e84f2ee718ed50c.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1296
        • C:\Users\Admin\AppData\Local\Temp\2a73df1149f6c108c4b4185f9fa1c04fd8574382321be3345e84f2ee718ed50c.exe
          C:\Users\Admin\AppData\Local\Temp\2a73df1149f6c108c4b4185f9fa1c04fd8574382321be3345e84f2ee718ed50c.exe
          3⤵
          • Adds policy Run key to start application
          • Modifies Installed Components in the registry
          • Adds Run key to start application
          • Drops file in System32 directory
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:4200
          • C:\Windows\SysWOW64\explorer.exe
            explorer.exe
            4⤵
            • Modifies Installed Components in the registry
            PID:32
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            4⤵
              PID:4548
            • C:\Users\Admin\AppData\Local\Temp\2a73df1149f6c108c4b4185f9fa1c04fd8574382321be3345e84f2ee718ed50c.exe
              "C:\Users\Admin\AppData\Local\Temp\2a73df1149f6c108c4b4185f9fa1c04fd8574382321be3345e84f2ee718ed50c.exe"
              4⤵
              • Checks computer location settings
              • Drops file in System32 directory
              • Modifies registry class
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of AdjustPrivilegeToken
              PID:3620
              • C:\Windows\SysWOW64\spynet\server.exe
                "C:\Windows\system32\spynet\server.exe"
                5⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of SetWindowsHookEx
                PID:3012
                • C:\Windows\SysWOW64\spynet\server.exe
                  C:\Windows\SysWOW64\spynet\server.exe
                  6⤵
                  • Executes dropped EXE
                  PID:1312
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 1312 -s 564
                    7⤵
                    • Program crash
                    PID:2368
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 1312 -ip 1312
        1⤵
          PID:1548

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              XX--XX--XX.txt

              • Path C:\Users\Admin\AppData\Local\Temp\XX--XX--XX.txt
              • Size 229KB
              • SHA256 60377e2cdaff68046b88dd2a98bb0e928c0ea52a66d7b360f524bb153dcd14e5
              • MD5 SHA1 SHA512 SSDEEP

              server.exe

              • Path C:\Windows\SysWOW64\spynet\server.exe
              • Size 328KB
              • SHA256 2a73df1149f6c108c4b4185f9fa1c04fd8574382321be3345e84f2ee718ed50c
              • MD5 SHA1 SHA512 SSDEEP

              server.exe

              • Path C:\Windows\SysWOW64\spynet\server.exe
              • Size 328KB
              • SHA256 2a73df1149f6c108c4b4185f9fa1c04fd8574382321be3345e84f2ee718ed50c
              • MD5 SHA1 SHA512 SSDEEP

              server.exe

              • Path C:\Windows\SysWOW64\spynet\server.exe
              • Size 328KB
              • SHA256 2a73df1149f6c108c4b4185f9fa1c04fd8574382321be3345e84f2ee718ed50c
              • MD5 SHA1 SHA512 SSDEEP

              memory/32-151-0x0000000024080000-0x00000000240E2000-memory.dmp

              memory/32-148-0x0000000024080000-0x00000000240E2000-memory.dmp

              memory/1312-173-0x0000000000400000-0x0000000000450000-memory.dmp

              memory/1312-172-0x0000000000400000-0x0000000000450000-memory.dmp

              memory/3620-161-0x0000000024160000-0x00000000241C2000-memory.dmp

              memory/3620-174-0x0000000024160000-0x00000000241C2000-memory.dmp

              memory/3620-163-0x0000000024160000-0x00000000241C2000-memory.dmp

              memory/4200-158-0x0000000024160000-0x00000000241C2000-memory.dmp

              memory/4200-162-0x0000000000400000-0x0000000000450000-memory.dmp

              memory/4200-145-0x0000000024080000-0x00000000240E2000-memory.dmp

              memory/4200-140-0x0000000024010000-0x0000000024072000-memory.dmp

              memory/4200-138-0x0000000000400000-0x0000000000450000-memory.dmp

              memory/4200-137-0x0000000000400000-0x0000000000450000-memory.dmp

              memory/4200-136-0x0000000000400000-0x0000000000450000-memory.dmp

              memory/4200-135-0x0000000000400000-0x0000000000450000-memory.dmp

              memory/4200-153-0x00000000240F0000-0x0000000024152000-memory.dmp