ClamAV on Amazon Linux

†

sudo yum update -y

†

date
sudo cp -f /usr/share/zoneinfo/Japan /etc/localtime
sudo service crond restart

†

sudo yum install clamav clamav-scanner-sysvinit clamav-update -y

†

• /etc/freshclam.conf

  sudo vi /etc/freshclam.conf	

• # Example            

• DatabaseDirectory /var/lib/clamav
  UpdateLogFile /var/log/freshclam.log
  DatabaseOwner clamupdate

• sed -i -e "s/Example/#Example/" freshclam.conf
  sed -i -e "s:#DatabaseDirectory /var/lib/clamav:DatabaseDirectory /var/lib/clamav:" freshclam.conf
  sed -i -e "s:#UpdateLogFile /var/log/freshclam.log:UpdateLogFile /var/log/freshclam.log:" freshclam.conf
  sed -i -e "s/#DatabaseOwner clamupdate/DatabaseOwner clamupdate/" freshclam.conf

†

sudo freshclam

†

• etc/clamd.d/scan.conf

  sudo vi /etc/clamd.d/scan.conf

• # Example

• LocalSocket /var/run/clamd.scan/clamd.sock
  FixStaleSocket yes
  TCPSocket 3310
  TCPAddr 127.0.0.1

• sed -i -e "s/Example/#Example/" /etc/clamd.d/scan.conf
  sed -i -e "s:#LocalSocket /var/run/clamd.scan/clamd.sock:LocalSocket /var/run/clamd.scan/clamd.sock:" /etc/clamd.d/scan.conf
  sed -i -e "s/#FixStaleSocket yes/FixStaleSocket yes/" /etc/clamd.d/scan.conf
  sed -i -e "s/#TCPSocket 3310/TCPSocket 3310/" /etc/clamd.d/scan.conf
  sed -i -e "s/#TCPAddr 127.0.0.1/TCPAddr 127.0.0.1/" /etc/clamd.d/scan.conf

†

sudo service clamd.scan start

†

sudo chkconfig clamd.scan on
chkconfig

†

sudo ln -s /etc/clamd.d/scan.conf /etc/clamd.conf 

†

/usr/bin/clamdscan .
or
/usr/bin/clamscan -r .

†

/usr/bin/freshclam

†

• mkdir -p /opt/scripts/clamav

• /opt/scripts/clamav/virusscan.sh

  #!/bin/bash
  PATH=/usr/bin:/bin 
  
  
  logger "[Info] ClamAV Scan Start" 
  
  fromAddr="<Mail address>"
  toAddr="<Mail address>"
  subjString="[AWS] Virus Found in `hostname`"
  
  
  # clamd update
  yum -y --enablerepo=rpmforge update clamd > /dev/null 2>&1
  freshclam > /dev/null 2>&1
  
  # excludeopt setup
  excludelist=/opt/scripts/clamav/clamscan.exclude
  if [ -s $excludelist ]; then
      for i in `cat $excludelist`
      do
          if [ $(echo "$i"|grep \/$) ]; then
              i=`echo $i|sed -e 's/^\([^ ]*\)\/$/\1/p' -e d`
              excludeopt="${excludeopt} --exclude-dir=^$i"
          else
              excludeopt="${excludeopt} --exclude=^$i"
          fi
      done
  fi 
  
  # virus scan
  CLAMSCANTMP=`mktemp`
  clamscan --recursive --remove ${excludeopt} / > $CLAMSCANTMP 2>&1
  bodyString="`grep FOUND$ $CLAMSCANTMP`"
  [ ! -z "$(grep FOUND$ $CLAMSCANTMP)" ] && \
  
  # report mail send
  echo -e "From: ${fromAddr}\nTo: ${toAddr}\nSubject:${subjString}\n\n${bodyString}" | /usr/sbin/sendmail -t ${toAddr} -f <Mail address>
  
  
  grep FOUND$ $CLAMSCANTMP | logger 
  
  rm -f $CLAMSCANTMP
  
  
  logger "[Info] ClamAV Scan Finish"

• sudo chmod 755 /opt/scripts/clamav/virusscan.sh

• sudo echo "/proc/" >> /opt/scripts/clamav/clamscan.exclude
  sudo echo "/sys/" >> /opt/scripts/clamav/clamscan.exclude

• cron

  cd /etc/cron.daily
  sudo ln -s /opt/scripts/clamav/virusscan.sh

†

wget http://www.eicar.org/download/eicar.com.txt
wget http://www.eicar.org/download/eicar_com.zip
wget http://www.eicar.org/download/eicarcom2.zip