An ssh honeypot with the XZ backdoor. CVE-2024-3094
TODO: hook the backdoor and/or sshd. log rsa keys for decryption.
notes:
- https://gist.github.com/smx-smx/a6112d54777845d389bd7126d6e9f504
- https://gist.github.com/q3k/af3d93b6a1f399de28fe194add452d01
- https://github.com/hamarituc/xz-backdoor
PLEASE run this on a separate isolated system. Docker is configured in a way that allows a threat actor to easily escape it. Docker is only used to get all the shared libraries working and configured.
Install notify by projectdiscovery using the following command:
go install -v github.com/projectdiscovery/notify/cmd/notify@latestRun the following command to start the honeypot:
./monitor.sh DISCORD_WEBHOOK_URLe.g.
./monitor.sh https://discord.com/api/webhooks/12345678909876/aaaaaaaaThis will use notify to send all logs to a discord webhook.
The vulnerable version of xz (5.6.1) and the liblzma linked version of sshd from the fedora repositories are ran in the configuration that activates the backdoor. Monitoring is provided by bpftrace, strace, tcpdump, and the sshd process itself.
bpftrace- Syscall monitoring and shared library hooking.
strace- Syscall montioring for the parent
sshdprocess.
- Syscall montioring for the parent
tcpdump- Capturing packets.
sshd- Login events (NOTE This will most likely not capture the login event for a bad actor as the backdoor uses
set_log_maskto change the logging behaviour when the attacker attempts to login)
- Login events (NOTE This will most likely not capture the login event for a bad actor as the backdoor uses