Analysis

  • max time kernel
    150s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    21-10-2022 02:34

General

  • Target

    75543db0a8dd47709ac8ea49a85828b15d059f7311771a1911f93e4ad5137d45.exe

  • Size

    283KB

  • MD5

    1a7f51bbf414dec32b6958f6f291184a

  • SHA1

    3b966e93f840b8190a36520824e6bbdf4ec213fe

  • SHA256

    75543db0a8dd47709ac8ea49a85828b15d059f7311771a1911f93e4ad5137d45

  • SHA512

    cb5d0fbf5ea6363985827dae87c1576b6325c899d31c295180fd416289524f1ce98ee8011601a6b94482259a0ad2aa891e16a712990e2cd9b78407b872b9c239

  • SSDEEP

    6144:b4ABF94w3pAuO/50BTnyZsSaXhh4XAS79hO9R0O91FG+m:UUYGLyWSKaAS79MEqfGB

Malware Config

Extracted

Family

cybergate

Version

v1.05.1

Botnet

system

C2

127.0.0.1:999

Mutex

J3I8MC6H3JJ08X

Attributes
  • enable_keylogger

    true

  • enable_message_box

    true

  • 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

    Windows cannot find the specified path.

  • message_box_title

    Error

  • password

    cybergate

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 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1344
      • C:\Users\Admin\AppData\Local\Temp\75543db0a8dd47709ac8ea49a85828b15d059f7311771a1911f93e4ad5137d45.exe
        "C:\Users\Admin\AppData\Local\Temp\75543db0a8dd47709ac8ea49a85828b15d059f7311771a1911f93e4ad5137d45.exe"
        2⤵
        • Adds policy Run key to start application
        • Modifies Installed Components in the registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:1444
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe
          3⤵
          • Modifies Installed Components in the registry
          PID:1716
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          3⤵
            PID:1056
          • C:\Users\Admin\AppData\Local\Temp\75543db0a8dd47709ac8ea49a85828b15d059f7311771a1911f93e4ad5137d45.exe
            "C:\Users\Admin\AppData\Local\Temp\75543db0a8dd47709ac8ea49a85828b15d059f7311771a1911f93e4ad5137d45.exe"
            3⤵
            • Loads dropped DLL
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            PID:1672
            • C:\install\server.exe
              "C:\install\server.exe"
              4⤵
              • Executes dropped EXE
              PID:1960

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Registry Run Keys / Startup Folder

      2
      T1060

      Defense Evasion

      Modify Registry

      2
      T1112

      Discovery

      System Information Discovery

      1
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\XX--XX--XX.txt
        Filesize

        222KB

        MD5

        f9983dd814944a521ed3b84d2a33c60c

        SHA1

        dc5fd2ace384d1b5ab470cfc42989cbf9c66532c

        SHA256

        3986c0fa1bdda79e0152a738b25cf583ea0e346ed618b8728c8d4fe0b1994563

        SHA512

        5548c9d3aab45b04b13e3931fd48cffb1320a939082b2c8475edb000a4eea8a3de2f16b308a06b3fb88cd9a73c9d85622ee072ea280831a85d654ff8187d255a

      • C:\install\server.exe
        Filesize

        283KB

        MD5

        1a7f51bbf414dec32b6958f6f291184a

        SHA1

        3b966e93f840b8190a36520824e6bbdf4ec213fe

        SHA256

        75543db0a8dd47709ac8ea49a85828b15d059f7311771a1911f93e4ad5137d45

        SHA512

        cb5d0fbf5ea6363985827dae87c1576b6325c899d31c295180fd416289524f1ce98ee8011601a6b94482259a0ad2aa891e16a712990e2cd9b78407b872b9c239

      • C:\install\server.exe
        Filesize

        283KB

        MD5

        1a7f51bbf414dec32b6958f6f291184a

        SHA1

        3b966e93f840b8190a36520824e6bbdf4ec213fe

        SHA256

        75543db0a8dd47709ac8ea49a85828b15d059f7311771a1911f93e4ad5137d45

        SHA512

        cb5d0fbf5ea6363985827dae87c1576b6325c899d31c295180fd416289524f1ce98ee8011601a6b94482259a0ad2aa891e16a712990e2cd9b78407b872b9c239

      • \install\server.exe
        Filesize

        283KB

        MD5

        1a7f51bbf414dec32b6958f6f291184a

        SHA1

        3b966e93f840b8190a36520824e6bbdf4ec213fe

        SHA256

        75543db0a8dd47709ac8ea49a85828b15d059f7311771a1911f93e4ad5137d45

        SHA512

        cb5d0fbf5ea6363985827dae87c1576b6325c899d31c295180fd416289524f1ce98ee8011601a6b94482259a0ad2aa891e16a712990e2cd9b78407b872b9c239

      • \install\server.exe
        Filesize

        283KB

        MD5

        1a7f51bbf414dec32b6958f6f291184a

        SHA1

        3b966e93f840b8190a36520824e6bbdf4ec213fe

        SHA256

        75543db0a8dd47709ac8ea49a85828b15d059f7311771a1911f93e4ad5137d45

        SHA512

        cb5d0fbf5ea6363985827dae87c1576b6325c899d31c295180fd416289524f1ce98ee8011601a6b94482259a0ad2aa891e16a712990e2cd9b78407b872b9c239

      • memory/1344-59-0x0000000010410000-0x0000000010471000-memory.dmp
        Filesize

        388KB

      • memory/1444-75-0x00000000104F0000-0x0000000010551000-memory.dmp
        Filesize

        388KB

      • memory/1444-81-0x0000000010560000-0x00000000105C1000-memory.dmp
        Filesize

        388KB

      • memory/1444-65-0x0000000010480000-0x00000000104E1000-memory.dmp
        Filesize

        388KB

      • memory/1444-56-0x0000000010410000-0x0000000010471000-memory.dmp
        Filesize

        388KB

      • memory/1444-54-0x0000000075D71000-0x0000000075D73000-memory.dmp
        Filesize

        8KB

      • memory/1672-86-0x0000000010560000-0x00000000105C1000-memory.dmp
        Filesize

        388KB

      • memory/1672-79-0x0000000000000000-mapping.dmp
      • memory/1672-92-0x0000000010560000-0x00000000105C1000-memory.dmp
        Filesize

        388KB

      • memory/1672-93-0x0000000010560000-0x00000000105C1000-memory.dmp
        Filesize

        388KB

      • memory/1716-70-0x0000000010480000-0x00000000104E1000-memory.dmp
        Filesize

        388KB

      • memory/1716-64-0x0000000074C61000-0x0000000074C63000-memory.dmp
        Filesize

        8KB

      • memory/1716-62-0x0000000000000000-mapping.dmp
      • memory/1716-73-0x0000000010480000-0x00000000104E1000-memory.dmp
        Filesize

        388KB

      • memory/1960-89-0x0000000000000000-mapping.dmp