Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/10/2022, 19:16

General

  • Target
    2ead51d618f357f630331bddbf945a0e04faa3d25fd58fd3ef69bfe35fba93ca.exe
  • Size 673KB
  • Sample221029-xy537abef5
  • SHA256 2ead51d618f357f630331bddbf945a0e04faa3d25fd58fd3ef69bfe35fba93ca
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • cybergate

Version
  • v1.07.5

Botnet
  • runescape

C2
  • roonskaip.no-ip.biz:6969

Mutex
  • 475AO7NE04OX47

Attributes
  • enable_keylogger

    true

  • enable_message_box

    false

  • ftp_directory

    ./logs/

  • ftp_interval

    30

  • injected_process

    explorer.exe

  • install_dir

    install

  • install_file

    skype.exe

  • install_flag

    true

  • keylogger_enable_ftp

    false

  • message_box_caption

    Remote Administration anywhere in the world.

  • message_box_title

    CyberGate

  • password

    r00t

  • 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
  • Drops file in System32 directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Modifies registry class 1 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:2736
      • C:\Users\Admin\AppData\Local\Temp\2ead51d618f357f630331bddbf945a0e04faa3d25fd58fd3ef69bfe35fba93ca.exe
        "C:\Users\Admin\AppData\Local\Temp\2ead51d618f357f630331bddbf945a0e04faa3d25fd58fd3ef69bfe35fba93ca.exe"
        2⤵
        • 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:4528
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe
          3⤵
          • Modifies Installed Components in the registry
          • Suspicious use of AdjustPrivilegeToken
          PID:444
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe
          3⤵
          • Drops file in System32 directory
          • Modifies registry class
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:2428
          • C:\Windows\SysWOW64\install\skype.exe
            "C:\Windows\system32\install\skype.exe"
            4⤵
            • Executes dropped EXE
            PID:424
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 424 -s 548
              5⤵
              • Program crash
              PID:2104
        • C:\Windows\SysWOW64\install\skype.exe
          "C:\Windows\system32\install\skype.exe"
          3⤵
          • Executes dropped EXE
          PID:4848
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 4848 -s 576
            4⤵
            • Program crash
            PID:4628
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4848 -ip 4848
      1⤵
        PID:2652
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 424 -ip 424
        1⤵
          PID:4728

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              Admin2.txt

              • Path C:\Users\Admin\AppData\Local\Temp\Admin2.txt
              • Size 224KB
              • SHA256 e31635449073a297551b2b51c95c9f715f99ac298e744136da568ce5c5726c4b
              • MD5 SHA1 SHA512 SSDEEP

              skype.exe

              • Path C:\Windows\SysWOW64\install\skype.exe
              • Size 673KB
              • SHA256 2ead51d618f357f630331bddbf945a0e04faa3d25fd58fd3ef69bfe35fba93ca
              • MD5 SHA1 SHA512 SSDEEP

              skype.exe

              • Path C:\Windows\SysWOW64\install\skype.exe
              • Size 673KB
              • SHA256 2ead51d618f357f630331bddbf945a0e04faa3d25fd58fd3ef69bfe35fba93ca
              • MD5 SHA1 SHA512 SSDEEP

              skype.exe

              • Path C:\Windows\SysWOW64\install\skype.exe
              • Size 673KB
              • SHA256 2ead51d618f357f630331bddbf945a0e04faa3d25fd58fd3ef69bfe35fba93ca
              • MD5 SHA1 SHA512 SSDEEP

              memory/424-160-0x0000000000400000-0x0000000000562000-memory.dmp

              memory/424-159-0x0000000000400000-0x0000000000562000-memory.dmp

              memory/444-161-0x0000000010480000-0x00000000104E5000-memory.dmp

              memory/444-143-0x0000000010480000-0x00000000104E5000-memory.dmp

              memory/2428-151-0x00000000104F0000-0x0000000010555000-memory.dmp

              memory/2428-155-0x00000000104F0000-0x0000000010555000-memory.dmp

              memory/2428-162-0x00000000104F0000-0x0000000010555000-memory.dmp

              memory/4528-154-0x0000000000400000-0x0000000000562000-memory.dmp

              memory/4528-132-0x0000000000400000-0x0000000000562000-memory.dmp

              memory/4528-134-0x0000000010410000-0x0000000010475000-memory.dmp

              memory/4528-148-0x00000000104F0000-0x0000000010555000-memory.dmp

              memory/4528-139-0x0000000010480000-0x00000000104E5000-memory.dmp

              memory/4848-156-0x0000000000400000-0x0000000000562000-memory.dmp

              memory/4848-163-0x0000000000400000-0x0000000000562000-memory.dmp

              memory/4848-164-0x0000000000400000-0x0000000000562000-memory.dmp