Analysis

  • max time kernel
    115s
  • max time network
    105s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/10/2022, 06:56

General

  • Target

    ad5862ff1d619ed3bcfad7b0b45ed87970f743c311b2d9be92503e2ff8dd0c05.exe

  • Size

    804KB

  • MD5

    5f061ef92a483c6a169dd6cc3afc7010

  • SHA1

    f3622209435408b0ebf4b44e8b4b24fd787c4a2f

  • SHA256

    ad5862ff1d619ed3bcfad7b0b45ed87970f743c311b2d9be92503e2ff8dd0c05

  • SHA512

    b0da72f38e5e27dd404e83672e1cd6c921b2551b6c086f6e909e490b388087f0600e2aa56a4c379cf97da0b0c2d7383e65e5f15d04561edd0fcf13ee17563a98

  • SSDEEP

    12288:IxvDJrRVxLZ4iYEwR+hrF+tCclsLU3hdU/ukf4RlitsL4pJzPQhOwA2gna+5ZKH/:IHBZopSUxCukKL4vUjA9a+5Z7

Malware Config

Extracted

Family

cybergate

Version

v3.5.1.0

Botnet

AGR2__

C2

gasbriki.no-ip.org:999

Mutex

OU6GR6RV42JUI5

Attributes
  • enable_keylogger

    true

  • enable_message_box

    false

  • ftp_directory

    ./logs

  • ftp_interval

    30

  • injected_process

    explorer.exe

  • install_dir

    instaII

  • install_file

    jnstaII.exe

  • install_flag

    true

  • keylogger_enable_ftp

    false

  • message_box_caption

    Remote Administration anywhere in the world.

  • message_box_title

    CyberGate

  • password

    CG8888

  • regkey_hkcu

    HKCU

  • regkey_hklm

    HKLM

Signatures

  • CyberGate, Rebhip

    CyberGate is a lightweight remote administration tool with a wide array of functionalities.

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • 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 7 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.

  • Drops startup file 3 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • NTFS ADS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:532
      • C:\Users\Admin\AppData\Local\Temp\ad5862ff1d619ed3bcfad7b0b45ed87970f743c311b2d9be92503e2ff8dd0c05.exe
        "C:\Users\Admin\AppData\Local\Temp\ad5862ff1d619ed3bcfad7b0b45ed87970f743c311b2d9be92503e2ff8dd0c05.exe"
        2⤵
        • Checks computer location settings
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: RenamesItself
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2004
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c echo [zoneTransfer]ZoneID = 2 > "C:\Users\Admin\AppData\Local\Temp\ad5862ff1d619ed3bcfad7b0b45ed87970f743c311b2d9be92503e2ff8dd0c05.exe":ZONE.identifier & exit
          3⤵
          • NTFS ADS
          PID:2508
        • C:\Users\Admin\AppData\Roaming\winlogon.exe
          "C:\Users\Admin\AppData\Roaming\winlogon.exe"
          3⤵
          • Modifies WinLogon for persistence
          • Executes dropped EXE
          • Checks computer location settings
          • Suspicious use of SetThreadContext
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2080
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c echo [zoneTransfer]ZoneID = 2 > "C:\Users\Admin\AppData\Roaming\winlogon.exe":ZONE.identifier & exit
            4⤵
            • NTFS ADS
            PID:4608
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
            "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
            4⤵
            • 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 behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of WriteProcessMemory
            PID:628
            • C:\Windows\SysWOW64\explorer.exe
              explorer.exe
              5⤵
              • Modifies Installed Components in the registry
              PID:4788
              • C:\Windows\SysWOW64\instaII\jnstaII.exe
                "C:\Windows\system32\instaII\jnstaII.exe"
                6⤵
                • Executes dropped EXE
                PID:2432
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
              5⤵
                PID:1492
              • C:\Windows\SysWOW64\explorer.exe
                explorer.exe
                5⤵
                • Drops startup file
                • Suspicious use of AdjustPrivilegeToken
                PID:4432
            • C:\Users\Admin\AppData\Roaming\csrss.exe
              "C:\Users\Admin\AppData\Roaming\csrss.exe" C:\Users\Admin\AppData\Roaming\winlogon.exe -keyhide x -prochide 628 -reg C:\Users\Admin\AppData\Roaming\winlogon.exe -proc 628 C:\Users\Admin\AppData\Roaming\winlogon.exe
              4⤵
              • Executes dropped EXE
              PID:4864

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

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

              Filesize

              235KB

              MD5

              700c5832083c6017f83b226b4ce46b84

              SHA1

              0f64a7c2461b3728191e26a698612e3c134dbd5a

              SHA256

              4e324d714f1a9cc9aa6022cd081a873d862f28c58fe04bab7a49cd3973b8f890

              SHA512

              56ad3d708ba60c0da1abd81d2791c9592de90f7e9461d4825f42192f32104ffac9d8867ae62ffb4dd6049a857eef519516264da7b7cc76b61a8a0a67fb7b58cf

            • C:\Users\Admin\AppData\Local\Temp\ad5862ff1d619ed3bcfad7b0b45ed87970f743c311b2d9be92503e2ff8dd0c05.exe

              Filesize

              804KB

              MD5

              5f061ef92a483c6a169dd6cc3afc7010

              SHA1

              f3622209435408b0ebf4b44e8b4b24fd787c4a2f

              SHA256

              ad5862ff1d619ed3bcfad7b0b45ed87970f743c311b2d9be92503e2ff8dd0c05

              SHA512

              b0da72f38e5e27dd404e83672e1cd6c921b2551b6c086f6e909e490b388087f0600e2aa56a4c379cf97da0b0c2d7383e65e5f15d04561edd0fcf13ee17563a98

            • C:\Users\Admin\AppData\Roaming\csrss.exe

              Filesize

              7KB

              MD5

              a924e94db92303770895aa393798e68e

              SHA1

              3c12d5efbd4380303eb737e055513cbe699a2d84

              SHA256

              8d60dc6cebc239b0f1868cbeee25aecf15ff86efc4f531844209f54b92fa570b

              SHA512

              6452437980ac0827f6f29de1aea1d8f9081778e4bf084352b8624cd0ac769ebacb7da1b79261574558121ded68f5e2f853b65d2a021a17a42008ce83dd07bd69

            • C:\Users\Admin\AppData\Roaming\csrss.exe

              Filesize

              7KB

              MD5

              a924e94db92303770895aa393798e68e

              SHA1

              3c12d5efbd4380303eb737e055513cbe699a2d84

              SHA256

              8d60dc6cebc239b0f1868cbeee25aecf15ff86efc4f531844209f54b92fa570b

              SHA512

              6452437980ac0827f6f29de1aea1d8f9081778e4bf084352b8624cd0ac769ebacb7da1b79261574558121ded68f5e2f853b65d2a021a17a42008ce83dd07bd69

            • C:\Users\Admin\AppData\Roaming\winlogon.exe

              Filesize

              804KB

              MD5

              5f061ef92a483c6a169dd6cc3afc7010

              SHA1

              f3622209435408b0ebf4b44e8b4b24fd787c4a2f

              SHA256

              ad5862ff1d619ed3bcfad7b0b45ed87970f743c311b2d9be92503e2ff8dd0c05

              SHA512

              b0da72f38e5e27dd404e83672e1cd6c921b2551b6c086f6e909e490b388087f0600e2aa56a4c379cf97da0b0c2d7383e65e5f15d04561edd0fcf13ee17563a98

            • C:\Users\Admin\AppData\Roaming\winlogon.exe

              Filesize

              804KB

              MD5

              5f061ef92a483c6a169dd6cc3afc7010

              SHA1

              f3622209435408b0ebf4b44e8b4b24fd787c4a2f

              SHA256

              ad5862ff1d619ed3bcfad7b0b45ed87970f743c311b2d9be92503e2ff8dd0c05

              SHA512

              b0da72f38e5e27dd404e83672e1cd6c921b2551b6c086f6e909e490b388087f0600e2aa56a4c379cf97da0b0c2d7383e65e5f15d04561edd0fcf13ee17563a98

            • C:\Windows\SysWOW64\instaII\jnstaII.exe

              Filesize

              1.1MB

              MD5

              d881de17aa8f2e2c08cbb7b265f928f9

              SHA1

              08936aebc87decf0af6e8eada191062b5e65ac2a

              SHA256

              b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

              SHA512

              5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

            • C:\Windows\SysWOW64\instaII\jnstaII.exe

              Filesize

              1.1MB

              MD5

              d881de17aa8f2e2c08cbb7b265f928f9

              SHA1

              08936aebc87decf0af6e8eada191062b5e65ac2a

              SHA256

              b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

              SHA512

              5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

            • memory/628-153-0x0000000000400000-0x000000000044B000-memory.dmp

              Filesize

              300KB

            • memory/628-162-0x0000000010490000-0x0000000010501000-memory.dmp

              Filesize

              452KB

            • memory/628-181-0x0000000010590000-0x0000000010601000-memory.dmp

              Filesize

              452KB

            • memory/628-144-0x0000000000400000-0x000000000044B000-memory.dmp

              Filesize

              300KB

            • memory/628-145-0x0000000000400000-0x000000000044B000-memory.dmp

              Filesize

              300KB

            • memory/628-147-0x0000000000400000-0x000000000044B000-memory.dmp

              Filesize

              300KB

            • memory/628-149-0x0000000000400000-0x000000000044B000-memory.dmp

              Filesize

              300KB

            • memory/628-150-0x0000000000400000-0x000000000044B000-memory.dmp

              Filesize

              300KB

            • memory/628-151-0x0000000000400000-0x000000000044B000-memory.dmp

              Filesize

              300KB

            • memory/628-174-0x0000000010510000-0x0000000010581000-memory.dmp

              Filesize

              452KB

            • memory/628-154-0x0000000000400000-0x000000000044B000-memory.dmp

              Filesize

              300KB

            • memory/628-156-0x0000000010410000-0x0000000010481000-memory.dmp

              Filesize

              452KB

            • memory/628-161-0x0000000000400000-0x000000000044B000-memory.dmp

              Filesize

              300KB

            • memory/2004-133-0x0000000075440000-0x00000000759F1000-memory.dmp

              Filesize

              5.7MB

            • memory/2004-138-0x0000000075440000-0x00000000759F1000-memory.dmp

              Filesize

              5.7MB

            • memory/2004-132-0x0000000075440000-0x00000000759F1000-memory.dmp

              Filesize

              5.7MB

            • memory/2080-172-0x0000000075440000-0x00000000759F1000-memory.dmp

              Filesize

              5.7MB

            • memory/2080-140-0x0000000075440000-0x00000000759F1000-memory.dmp

              Filesize

              5.7MB

            • memory/2080-139-0x0000000075440000-0x00000000759F1000-memory.dmp

              Filesize

              5.7MB

            • memory/4432-184-0x0000000010590000-0x0000000010601000-memory.dmp

              Filesize

              452KB

            • memory/4788-171-0x0000000010490000-0x0000000010501000-memory.dmp

              Filesize

              452KB

            • memory/4788-165-0x0000000010490000-0x0000000010501000-memory.dmp

              Filesize

              452KB