xee5ch / koadic

Koadic C3 COM Command & Control - JScript RAT

Koadic

Koadic, or COM Command & Control, is a Windows post-exploitation rootkit similar to other penetration testing tools such as Meterpreter and Powershell Empire. The major difference is that Koadic does most of its operations using Windows Script Host (a.k.a. JScript/VBScript), with compatibility in the core to support a default installation of Windows 2000 with no service packs (and potentially even versions of NT4) all the way through Windows 10.

It is possible to serve payloads completely in memory from stage 0 to beyond, as well as use cryptographically secure communications over SSL and TLS (depending on what the victim OS has enabled).

Koadic also attempts to be compatible with both Python 2 and Python 3.

Demo

1. Hooks a zombie
2. Elevates integrity (UAC Bypass)
3. Dumps SAM/SECURITY hive for passwords
4. Scans local network for open SMB
5. Pivots to another machine

Stagers

Stagers hook target zombies and allow you to use implants.

Module	Description
stager/js/mshta	serves payloads in memory using MSHTA.exe HTML Applications
stager/js/regsvr	serves payloads in memory using regsvr32.exe COM+ scriptlets
stager/js/rundll32_js	serves payloads in memory using rundll32.exe
stager/js/disk	serves payloads using files on disk

Implants

Implants start jobs on zombies.

Module	Description
implant/elevate/bypassuac_eventvwr	Uses enigma0x3's eventvwr.exe exploit to bypass UAC on Windows 7, 8, and 10.
implant/elevate/bypassuac_sdclt	Uses enigma0x3's sdclt.exe exploit to bypass UAC on Windows 10.
implant/fun/zombie	Maxes volume and opens The Cranberries YouTube in a hidden window.
implant/fun/voice	Plays a message over text-to-speech.
implant/gather/clipboard	Retrieves the current content of the user clipboard.
implant/gather/hashdump_sam	Retrieves hashed passwords from the SAM hive.
implant/gather/hashdump_dc	Domain controller hashes from the NTDS.dit file.
implant/inject/mimikatz_dynwrapx	Injects a reflective-loaded DLL to run powerkatz.dll (using Dynamic Wrapper X).
implant/inject/mimikatz_dotnet2js	Injects a reflective-loaded DLL to run powerkatz.dll (@tirannido DotNetToJS).
implant/inject/shellcode_excel	Runs arbitrary shellcode payload (if Excel is installed).
implant/manage/enable_rdesktop	Enables remote desktop on the target.
implant/manage/exec_cmd	Run an arbitrary command on the target, and optionally receive the output.
implant/pivot/stage_wmi	Hook a zombie on another machine using WMI.
implant/pivot/exec_psexec	Run a command on another machine using psexec from sysinternals.
implant/scan/tcp	Uses HTTP to scan open TCP ports on the target zombie LAN.
implant/utils/download_file	Downloads a file from the target zombie.
implant/utils/upload_file	Uploads a file from the listening server to the target zombies.

Disclaimer

Code samples are provided for educational purposes. Adequate defenses can only be built by researching attack techniques available to malicious actors. Using this code against target systems without prior permission is illegal in most jurisdictions. The authors are not liable for any damages from misuse of this information or code.

Acknowledgements

Special thanks to research done by the following individuals:

• @subTee
• @enigma0x3
• @tiraniddo
• @harmj0y
• @gentilkiwi
• @mattifestation
• clymb3r
• @Aleph___Naught
• @The_Naterz
• @JennaMagius
• @zerosum0x0