If you have the Brave Browser installed on your Windows devices, then you may also have Brave VPN services installed on the machine. Brave installs these services without user consent on Windows devices.
Brave Firewall + VPN is an extra service that Brave users may subscribe to for a monthly fee. Launched in mid-2022, it is a cooperation between Brave Software, maker of Brave Browser, and Guardian, the company that operates the VPN and the firewall solution. The firewall and VPN solution is available for $9.99 per month.
Not possible to start or enable a created service without user intervention. You don’t know what you are talking about.
Systemd “enabled” services are literal symlinks… whenever a target runs, it tries to start also all the service files on its “wants” directory.
You can literally enable any service for next boot by making a symlink in /etc/systemd/system/multi-user.target.wants/ (or whichever other target you want it to run on) as root (and installation scripts are run as root).
ln -s /usr/lib/systemd/system/whatever.service /etc/systemd/system/multi-user.target.wants/whatever.service
This is actually very close (just tested and confirmed it). I somehow stand corrected about requiring manual enablement but this is just using the package manager to do the dirty work for you.
However the program itself cannot write into those directories without root permissions. You still have to allow your package manager to do this with root permissions as mentioned.
Installing as user does not require root, to be clear. You can use systemd without root by specifying user.
Bruh you just ran the command to enable the ‘written’ service. Comprehension is a problem in this community.
OK… challenge accepted. Maybe you don’t know about systemd user services.
Content of mytrojan.sh:
#!/usr/bin/env bash
echo "Writing the service unit file"
cat > ~/.config/systemd/user/my_test_service.service << EOF
[Unit]
Description=Script Daemon For Test User Services
[Service]
Type=simple
User=
#Group=
ExecStart=/home/user/bin/myscript.sh
Restart=on-failure
StandardOutput=file:%h/log_file
[Install]
WantedBy=default.target
EOF
echo "Reloading systemd for the user"
systemctl --user daemon-reload || exit 1
echo "Enabling and starting the service"
systemctl --user enable --now my_test_service.service
Content of myscript.sh:
$ cat ~/bin/myscript.sh
#!/usr/bin/env bash
while true
do
now=$(date)
me=$(whoami)
echo "User $me at $now"
sleep 10
done
Now run the script (mytrojan.sh) and check service status after that:
$ ./mytrojan.sh
Writing the service unit file
Reloading systemd for the user
Enabling and starting the service
$ systemctl --user status my_test_service.service
● my_test_service.service - Script Daemon For Test User Services
Loaded: loaded (/home/user/.config/systemd/user/my_test_service.service; enabled; vendor preset: ena>
Active: active (running) since Thu 2023-10-19 12:15:21 EEST; 6s ago
Main PID: 1666383 (myscript.sh)
Tasks: 2 (limit: 18757)
Memory: 556.0K
CPU: 4ms
CGroup: /user.slice/user-1000.slice/user@1000.service/app.slice/my_test_service.service
├─1666383 /bin/bash /home/user/bin/myscript.sh
└─1666387 sleep 10
Oct 19 12:15:21 tesla systemd[1866318]: Started Script Daemon For Test User Services
You failed. This requires the user to run a script aka manual intervention.
Now imagine that the script is set to run as part of the brave installation - you type “yes” please download brave, brave installs brave and runs this script. Linux isn’t immune to malware as you seem to think.
