Analysis

  • max time kernel
    191s
  • max time network
    198s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-10-2022 07:36

General

  • Target

    4483a4f3c63f0676fff3b0b5c2c864bf3a701ac77b4e0b4dcdaa8f346207e869.exe

  • Size

    296KB

  • MD5

    6ec7c3b0905392de1a5d96d74fcc00c5

  • SHA1

    1912d46c9884cc03e3380e1c04b6fe56bad860f8

  • SHA256

    4483a4f3c63f0676fff3b0b5c2c864bf3a701ac77b4e0b4dcdaa8f346207e869

  • SHA512

    a23de972a391f5cbb40d9d0e87c0ab11613a11f32d9769d773322670a564499f465fe1a279c1ffa53d33342230a0e48b42ad399cf5d13c8acd3fb93f35b98c87

  • SSDEEP

    6144:/OpslFlqQhdBCkWYxuukP1pjSKSNVkq/MVJbt:/wslJTBd47GLRMTbt

Malware Config

Extracted

Family

cybergate

Version

v1.07.5

Botnet

test

C2

122.107.88.130:3460

Mutex

EGSIE8JEK4C775

Attributes
  • enable_keylogger

    true

  • enable_message_box

    true

  • ftp_directory

    ./logs/

  • ftp_interval

    30

  • injected_process

    explorer.exe

  • install_dir

    explorer

  • install_file

    explorer.exe

  • install_flag

    true

  • keylogger_enable_ftp

    false

  • message_box_caption

    working

  • message_box_title

    working

  • 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 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.

  • 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 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:1272
      • C:\Users\Admin\AppData\Local\Temp\4483a4f3c63f0676fff3b0b5c2c864bf3a701ac77b4e0b4dcdaa8f346207e869.exe
        "C:\Users\Admin\AppData\Local\Temp\4483a4f3c63f0676fff3b0b5c2c864bf3a701ac77b4e0b4dcdaa8f346207e869.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:4456
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe
          3⤵
          • Modifies Installed Components in the registry
          • Suspicious use of AdjustPrivilegeToken
          PID:4348
        • C:\Users\Admin\AppData\Local\Temp\4483a4f3c63f0676fff3b0b5c2c864bf3a701ac77b4e0b4dcdaa8f346207e869.exe
          "C:\Users\Admin\AppData\Local\Temp\4483a4f3c63f0676fff3b0b5c2c864bf3a701ac77b4e0b4dcdaa8f346207e869.exe"
          3⤵
          • Checks computer location settings
          • Drops file in System32 directory
          • Modifies registry class
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:3640
          • C:\Windows\SysWOW64\explorer\explorer.exe
            "C:\Windows\system32\explorer\explorer.exe"
            4⤵
            • Executes dropped EXE
            PID:404
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 404 -s 580
              5⤵
              • Program crash
              PID:3456
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 404 -ip 404
      1⤵
        PID:3800

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        224KB

        MD5

        e95f5b768f0af2f5ded0d295f3d1e79b

        SHA1

        31661bf8bc3807fc0256863108f78e616f6382c0

        SHA256

        de046b5bd62ea6b231d5975e89db6bb9e0473b516928672da59a920c7dffabcf

        SHA512

        f2c1001de6d4d3f3d6ee2111ebd447d958a70c68479dd27512b4dff738e5b25c0742800f20f005ffbf0d7bd8c183fe9872adcd9de0906fc1cf5b7ecd8e2e1713

      • C:\Windows\SysWOW64\explorer\explorer.exe

        Filesize

        296KB

        MD5

        6ec7c3b0905392de1a5d96d74fcc00c5

        SHA1

        1912d46c9884cc03e3380e1c04b6fe56bad860f8

        SHA256

        4483a4f3c63f0676fff3b0b5c2c864bf3a701ac77b4e0b4dcdaa8f346207e869

        SHA512

        a23de972a391f5cbb40d9d0e87c0ab11613a11f32d9769d773322670a564499f465fe1a279c1ffa53d33342230a0e48b42ad399cf5d13c8acd3fb93f35b98c87

      • C:\Windows\SysWOW64\explorer\explorer.exe

        Filesize

        296KB

        MD5

        6ec7c3b0905392de1a5d96d74fcc00c5

        SHA1

        1912d46c9884cc03e3380e1c04b6fe56bad860f8

        SHA256

        4483a4f3c63f0676fff3b0b5c2c864bf3a701ac77b4e0b4dcdaa8f346207e869

        SHA512

        a23de972a391f5cbb40d9d0e87c0ab11613a11f32d9769d773322670a564499f465fe1a279c1ffa53d33342230a0e48b42ad399cf5d13c8acd3fb93f35b98c87

      • memory/3640-150-0x00000000104F0000-0x0000000010555000-memory.dmp

        Filesize

        404KB

      • memory/3640-156-0x00000000104F0000-0x0000000010555000-memory.dmp

        Filesize

        404KB

      • memory/3640-149-0x00000000104F0000-0x0000000010555000-memory.dmp

        Filesize

        404KB

      • memory/4348-142-0x0000000010480000-0x00000000104E5000-memory.dmp

        Filesize

        404KB

      • memory/4348-143-0x0000000010480000-0x00000000104E5000-memory.dmp

        Filesize

        404KB

      • memory/4348-155-0x0000000010480000-0x00000000104E5000-memory.dmp

        Filesize

        404KB

      • memory/4456-146-0x00000000104F0000-0x0000000010555000-memory.dmp

        Filesize

        404KB

      • memory/4456-134-0x0000000010410000-0x0000000010475000-memory.dmp

        Filesize

        404KB

      • memory/4456-139-0x0000000010480000-0x00000000104E5000-memory.dmp

        Filesize

        404KB