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Analysis

  • max time kernel
    160s
  • max time network
    209s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/11/2022, 23:54

General

  • Target

    a5f6ddb0c13d00fe9194e6f58e4e0e6adb05acae621271ac91698c0dc13a6f4c.exe

  • Size

    382KB

  • MD5

    b8c17ccca22fd21439330484d11b5afd

  • SHA1

    63772570981db9602b2cba620890c805c48bec25

  • SHA256

    a5f6ddb0c13d00fe9194e6f58e4e0e6adb05acae621271ac91698c0dc13a6f4c

  • SHA512

    beb6454374c1a3d4071c231cccf53335518ea954c952413dd4946bf5acccc81b59c62c36073e99c5769038901069cd56e2d29537d201e3674f7da6f54db2e548

  • SSDEEP

    6144:gkDhZbmvGrOk0IImGo3Br+BstcbTxnU0A+0eBj9V9O0bnH:ntAEOkDEu1mnU+jnpbn

Malware Config

Extracted

Family

cybergate

Version

v1.07.5

Botnet

Cyber

C2

lcode.no-ip.org:82

Mutex

Updater

Attributes
  • enable_keylogger

    true

  • enable_message_box

    false

  • ftp_directory

    .//domains/steam.us.lt/public_html/v0.1/

  • ftp_interval

    30

  • ftp_password

    l37w9hukp6

  • ftp_port

    21

  • ftp_server

    steam.us.lt

  • ftp_username

    steam

  • injected_process

    explorer.exe

  • install_dir

    Winlog

  • install_file

    Winlogon.exe

  • install_flag

    true

  • keylogger_enable_ftp

    true

  • message_box_caption

    Remote Administration anywhere in the world.

  • message_box_title

    CyberGate

  • password

    123456

  • 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 3 IoCs
  • Modifies Installed Components in the registry 2 TTPs 4 IoCs
  • UPX packed file 21 IoCs

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

  • Checks computer location settings 2 TTPs 2 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: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:2628
      • C:\Users\Admin\AppData\Local\Temp\a5f6ddb0c13d00fe9194e6f58e4e0e6adb05acae621271ac91698c0dc13a6f4c.exe
        "C:\Users\Admin\AppData\Local\Temp\a5f6ddb0c13d00fe9194e6f58e4e0e6adb05acae621271ac91698c0dc13a6f4c.exe"
        2⤵
        • Checks computer location settings
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2040
        • C:\Users\Admin\AppData\Local\Temp\tmpD949.tmp.exe
          "C:\Users\Admin\AppData\Local\Temp\tmpD949.tmp.exe"
          3⤵
          • Adds policy Run key to start application
          • Executes dropped EXE
          • Modifies Installed Components in the registry
          • Adds Run key to start application
          • Drops file in System32 directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:1820
          • C:\Windows\SysWOW64\explorer.exe
            explorer.exe
            4⤵
            • Modifies Installed Components in the registry
            • Suspicious use of AdjustPrivilegeToken
            PID:1616
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            4⤵
              PID:800
            • C:\Users\Admin\AppData\Local\Temp\tmpD949.tmp.exe
              "C:\Users\Admin\AppData\Local\Temp\tmpD949.tmp.exe"
              4⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Drops file in System32 directory
              • Modifies registry class
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of AdjustPrivilegeToken
              PID:1008
              • C:\Windows\SysWOW64\Winlog\Winlogon.exe
                "C:\Windows\system32\Winlog\Winlogon.exe"
                5⤵
                • Executes dropped EXE
                PID:5092
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 5092 -s 576
                  6⤵
                  • Program crash
                  PID:3136
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 5092 -s 576
                  6⤵
                  • Program crash
                  PID:8
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 5092 -ip 5092
        1⤵
          PID:1620

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\Admin2.txt

          Filesize

          224KB

          MD5

          cb78d227de89af81c83b72e0e91baf41

          SHA1

          a0ecaa698463eca18e92119368db176c639dfd72

          SHA256

          5e55788e4212fcebe765eafa16009f63739604c44eea600c36b35b9321d8f3b5

          SHA512

          01c8f0fe2f98761bbc9d2a2736c1636ae843dbe4e190277af9f43fe9a83f869d4ef590aab668a4440d562757d1a2078c3bb794aeacb77842fc90ba036f52fc08

        • C:\Users\Admin\AppData\Local\Temp\tmpD949.tmp.exe

          Filesize

          373KB

          MD5

          bc8b1938ae921daf721e9c5899102534

          SHA1

          3e7bbc011dc3f2ebd512b5df35102cc056dc742a

          SHA256

          2c98d4b8c7a570cf258342c9119ff720fea17be44fcd3b1abeebbecc3914fadd

          SHA512

          b92b87480745cca4859f7d5de1f036b65df92f7004fd107784b20e9135bb241646c34a61b1eae4df13ea3c750bc403e2b6248ef1e360d6658bc7c684c44b2ebd

        • C:\Users\Admin\AppData\Local\Temp\tmpD949.tmp.exe

          Filesize

          373KB

          MD5

          bc8b1938ae921daf721e9c5899102534

          SHA1

          3e7bbc011dc3f2ebd512b5df35102cc056dc742a

          SHA256

          2c98d4b8c7a570cf258342c9119ff720fea17be44fcd3b1abeebbecc3914fadd

          SHA512

          b92b87480745cca4859f7d5de1f036b65df92f7004fd107784b20e9135bb241646c34a61b1eae4df13ea3c750bc403e2b6248ef1e360d6658bc7c684c44b2ebd

        • C:\Users\Admin\AppData\Local\Temp\tmpD949.tmp.exe

          Filesize

          373KB

          MD5

          bc8b1938ae921daf721e9c5899102534

          SHA1

          3e7bbc011dc3f2ebd512b5df35102cc056dc742a

          SHA256

          2c98d4b8c7a570cf258342c9119ff720fea17be44fcd3b1abeebbecc3914fadd

          SHA512

          b92b87480745cca4859f7d5de1f036b65df92f7004fd107784b20e9135bb241646c34a61b1eae4df13ea3c750bc403e2b6248ef1e360d6658bc7c684c44b2ebd

        • C:\Windows\SysWOW64\Winlog\Winlogon.exe

          Filesize

          373KB

          MD5

          bc8b1938ae921daf721e9c5899102534

          SHA1

          3e7bbc011dc3f2ebd512b5df35102cc056dc742a

          SHA256

          2c98d4b8c7a570cf258342c9119ff720fea17be44fcd3b1abeebbecc3914fadd

          SHA512

          b92b87480745cca4859f7d5de1f036b65df92f7004fd107784b20e9135bb241646c34a61b1eae4df13ea3c750bc403e2b6248ef1e360d6658bc7c684c44b2ebd

        • C:\Windows\SysWOW64\Winlog\Winlogon.exe

          Filesize

          373KB

          MD5

          bc8b1938ae921daf721e9c5899102534

          SHA1

          3e7bbc011dc3f2ebd512b5df35102cc056dc742a

          SHA256

          2c98d4b8c7a570cf258342c9119ff720fea17be44fcd3b1abeebbecc3914fadd

          SHA512

          b92b87480745cca4859f7d5de1f036b65df92f7004fd107784b20e9135bb241646c34a61b1eae4df13ea3c750bc403e2b6248ef1e360d6658bc7c684c44b2ebd

        • memory/1008-165-0x0000000000400000-0x000000000049B000-memory.dmp

          Filesize

          620KB

        • memory/1008-166-0x0000000010560000-0x00000000105C5000-memory.dmp

          Filesize

          404KB

        • memory/1008-164-0x0000000010560000-0x00000000105C5000-memory.dmp

          Filesize

          404KB

        • memory/1008-162-0x0000000010560000-0x00000000105C5000-memory.dmp

          Filesize

          404KB

        • memory/1008-159-0x0000000000400000-0x000000000049B000-memory.dmp

          Filesize

          620KB

        • memory/1616-146-0x0000000010480000-0x00000000104E5000-memory.dmp

          Filesize

          404KB

        • memory/1616-147-0x0000000010480000-0x00000000104E5000-memory.dmp

          Filesize

          404KB

        • memory/1820-158-0x0000000010560000-0x00000000105C5000-memory.dmp

          Filesize

          404KB

        • memory/1820-136-0x0000000000400000-0x000000000049B000-memory.dmp

          Filesize

          620KB

        • memory/1820-148-0x0000000000400000-0x000000000049B000-memory.dmp

          Filesize

          620KB

        • memory/1820-138-0x0000000010410000-0x0000000010475000-memory.dmp

          Filesize

          404KB

        • memory/1820-163-0x0000000000400000-0x000000000049B000-memory.dmp

          Filesize

          620KB

        • memory/1820-150-0x00000000104F0000-0x0000000010555000-memory.dmp

          Filesize

          404KB

        • memory/1820-143-0x0000000010480000-0x00000000104E5000-memory.dmp

          Filesize

          404KB

        • memory/2040-132-0x00007FF82D4F0000-0x00007FF82DF26000-memory.dmp

          Filesize

          10.2MB

        • memory/5092-169-0x0000000000400000-0x000000000049B000-memory.dmp

          Filesize

          620KB

        • memory/5092-171-0x0000000000400000-0x000000000049B000-memory.dmp

          Filesize

          620KB