Analysis

  • max time kernel
    174s
  • max time network
    188s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 16:50

General

  • Target

    a2c5a665d278e7cdcfdcdaf6944181ca24e0b3c5a6f28c41474d9e9ed28cfe81.exe

  • Size

    296KB

  • MD5

    444a3209e51d23b92d65a85682320c9e

  • SHA1

    5b39e46a4d8a2f5b3fa4491160441b846bcbfe9a

  • SHA256

    a2c5a665d278e7cdcfdcdaf6944181ca24e0b3c5a6f28c41474d9e9ed28cfe81

  • SHA512

    2179797ac9af505ce255874dbcd988cb80baab3cd2437dea9f9cdfc674a8b16811fb5bbde9aa5920bc6b27e8378701198f7b53a7f7246b001dfc2919cf204014

  • SSDEEP

    6144:fOpslFlqehdBCkWYxuukP1pjSKSNVkq/MVJbp:fwslvTBd47GLRMTbp

Malware Config

Extracted

Family

cybergate

Version

v1.07.5

Botnet

remote

C2

188.254.245.133:27015

188.254.245.133:82

Mutex

10448RHN33INSC

Attributes
  • enable_keylogger

    true

  • enable_message_box

    false

  • ftp_directory

    ./logs/

  • ftp_interval

    30

  • injected_process

    explorer.exe

  • install_dir

    WinDir

  • install_file

    firewall.exe

  • install_flag

    true

  • keylogger_enable_ftp

    false

  • message_box_caption

    Remote Administration anywhere in the world.

  • message_box_title

    CyberGate

  • password

    cybergate

  • 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 1 IoCs
  • Modifies Installed Components in the registry 2 TTPs 4 IoCs
  • UPX packed file 10 IoCs

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

  • 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 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 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:2644
      • C:\Users\Admin\AppData\Local\Temp\a2c5a665d278e7cdcfdcdaf6944181ca24e0b3c5a6f28c41474d9e9ed28cfe81.exe
        "C:\Users\Admin\AppData\Local\Temp\a2c5a665d278e7cdcfdcdaf6944181ca24e0b3c5a6f28c41474d9e9ed28cfe81.exe"
        2⤵
        • 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:960
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe
          3⤵
          • Drops file in System32 directory
          • Modifies registry class
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:2264
          • C:\Windows\SysWOW64\WinDir\firewall.exe
            "C:\Windows\system32\WinDir\firewall.exe"
            4⤵
            • Executes dropped EXE
            PID:3464
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 584
              5⤵
              • Program crash
              PID:3980
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          3⤵
            PID:4624
          • C:\Users\Admin\AppData\Local\Temp\a2c5a665d278e7cdcfdcdaf6944181ca24e0b3c5a6f28c41474d9e9ed28cfe81.exe
            "C:\Users\Admin\AppData\Local\Temp\a2c5a665d278e7cdcfdcdaf6944181ca24e0b3c5a6f28c41474d9e9ed28cfe81.exe"
            3⤵
            • Modifies Installed Components in the registry
            • Suspicious use of AdjustPrivilegeToken
            PID:4668
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3464 -ip 3464
        1⤵
          PID:4756

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          225KB

          MD5

          5a7c7be07e8a139aa63ecdfd378406c2

          SHA1

          1ed7da0c93d5a153c9432bc4eb26f6283b2eb4e8

          SHA256

          4f1e0148d8af4749f7a84e17ea918b84bcd53ead5e128f9f1bc5a5a415c7a1dc

          SHA512

          55da98c4e749812c514fffb23395b23f7480f8e3fab6b229d1471c9072f878077d4a7f1c6871f89e473184178f26e3e570a5f72fce6b616099c3b38c25d645bb

        • C:\Windows\SysWOW64\WinDir\firewall.exe

          Filesize

          296KB

          MD5

          444a3209e51d23b92d65a85682320c9e

          SHA1

          5b39e46a4d8a2f5b3fa4491160441b846bcbfe9a

          SHA256

          a2c5a665d278e7cdcfdcdaf6944181ca24e0b3c5a6f28c41474d9e9ed28cfe81

          SHA512

          2179797ac9af505ce255874dbcd988cb80baab3cd2437dea9f9cdfc674a8b16811fb5bbde9aa5920bc6b27e8378701198f7b53a7f7246b001dfc2919cf204014

        • C:\Windows\SysWOW64\WinDir\firewall.exe

          Filesize

          296KB

          MD5

          444a3209e51d23b92d65a85682320c9e

          SHA1

          5b39e46a4d8a2f5b3fa4491160441b846bcbfe9a

          SHA256

          a2c5a665d278e7cdcfdcdaf6944181ca24e0b3c5a6f28c41474d9e9ed28cfe81

          SHA512

          2179797ac9af505ce255874dbcd988cb80baab3cd2437dea9f9cdfc674a8b16811fb5bbde9aa5920bc6b27e8378701198f7b53a7f7246b001dfc2919cf204014

        • memory/960-149-0x0000000010560000-0x00000000105C5000-memory.dmp

          Filesize

          404KB

        • memory/960-138-0x0000000010480000-0x00000000104E5000-memory.dmp

          Filesize

          404KB

        • memory/960-133-0x0000000010410000-0x0000000010475000-memory.dmp

          Filesize

          404KB

        • memory/960-144-0x00000000104F0000-0x0000000010555000-memory.dmp

          Filesize

          404KB

        • memory/2264-156-0x0000000010480000-0x00000000104E5000-memory.dmp

          Filesize

          404KB

        • memory/2264-142-0x0000000010480000-0x00000000104E5000-memory.dmp

          Filesize

          404KB

        • memory/2264-141-0x0000000010480000-0x00000000104E5000-memory.dmp

          Filesize

          404KB

        • memory/2264-137-0x0000000000000000-mapping.dmp

        • memory/3464-158-0x0000000000000000-mapping.dmp

        • memory/4668-152-0x0000000010560000-0x00000000105C5000-memory.dmp

          Filesize

          404KB

        • memory/4668-153-0x0000000010560000-0x00000000105C5000-memory.dmp

          Filesize

          404KB

        • memory/4668-148-0x0000000000000000-mapping.dmp

        • memory/4668-157-0x0000000010560000-0x00000000105C5000-memory.dmp

          Filesize

          404KB