lynis/include/tests_malware

#!/bin/sh

#################################################################################
#
#   Lynis
# ------------------
#
# Copyright 2007-2015, Michael Boelen, CISOfy (michael.boelen@cisofy.com)
# Web site: https://cisofy.com
#
# Lynis comes with ABSOLUTELY NO WARRANTY. This is free software, and you are
# welcome to redistribute it under the terms of the GNU General Public License.
# See LICENSE file for usage of this software.
#
#################################################################################
#
# Malware scanners
#
#################################################################################
#
    InsertSection "Software: Malware scanners"
#
#################################################################################
#
    CLAMD_RUNNING=0
    CLAMSCAN_INSTALLED=0
    ESET_DAEMON_RUNNING=0
    FRESHCLAM_DAEMON_RUNNING=0
    MCAFEE_SCANNER_RUNNING=0
    MALWARE_SCANNER_INSTALLED=0
    SOPHOS_SCANNER_RUNNING=0
#
#################################################################################
#
    # Test        : MALW-3275
    # Description : Check for installed tool (chkrootkit)
    Register --test-no MALW-3275 --weight L --network NO --description "Check for chkrootkit"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: checking presence chkrootkit"
        if [ ! "${CHKROOTKITBINARY}" = "" ]; then
            Display --indent 2 --text "- Checking chkrootkit" --result "FOUND" --color GREEN
            logtext "Result: Found ${CHKROOTKITBINARY}"
            MALWARE_SCANNER_INSTALLED=1
            AddHP 2 2
            report "malware_scanner[]=chkrootkit"
          else
            logtext "Result: chkrootkit not found"
        fi
    fi
#
#################################################################################
#
    # Test        : MALW-3276
    # Description : Check for installed tool (Rootkit Hunter)
    Register --test-no MALW-3276 --weight L --network NO --description "Check for Rootkit Hunter"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: checking presence Rootkit Hunter"
        if [ ! "${RKHUNTERBINARY}" = "" ]; then
            Display --indent 2 --text "- Checking Rootkit Hunter" --result "FOUND" --color GREEN
            logtext "Result: Found ${RKHUNTERBINARY}"
            MALWARE_SCANNER_INSTALLED=1
            AddHP 2 2
            report "malware_scanner[]=rkhunter"
          else
            logtext "Result: Rootkit Hunter not found"
        fi
    fi
#
#################################################################################
#
    # Test        : MALW-3278
    # Description : Check for installed tool (Linux Malware Detect or LMD)
    Register --test-no MALW-3278 --weight L --network NO --description "Check for LMD"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: checking presence LMD"
        if [ ! "${LMDBINARY}" = "" ]; then
            Display --indent 2 --text "- Checking LMD (Linux Malware Detect)" --result "FOUND" --color GREEN
            logtext "Result: Found ${LMDBINARY}"
            MALWARE_SCANNER_INSTALLED=1
            AddHP 2 2
            report "malware_scanner[]=lmd"
          else
            logtext "Result: LMD not found"
        fi
    fi
#
#################################################################################
#
    # Test        : MALW-3280
    # Description : Check if an anti-virus tool is installed
    Register --test-no MALW-3280 --weight L --network NO --description "Check if anti-virus tool is installed"
    if [ ${SKIPTEST} -eq 0 ]; then
        FOUND=0

        # ESET security products
        logtext "Test: checking process esets_daemon"
        IsRunning esets_daemon
        if [ ${RUNNING} -eq 1 ]; then
            FOUND=1
            Display --indent 2 --text "- Checking ESET daemon" --result "FOUND" --color GREEN
            logtext "Result: found ESET security product"
            ESET_DAEMON_RUNNING=1
            MALWARE_SCANNER_INSTALLED=1
            AddHP 2 2
            report "malware_scanner[]=eset"
        fi

        # McAfee products
        logtext "Test: checking process cma or cmdagent (McAfee)"
        # cma is too generic to match on, so we want to ensure that it is related to McAfee first
        if [ -x /opt/McAfee/cma/bin/cma ]; then
             IsRunning cma
             if [ ${RUNNING} -eq 1 ]; then MCAFEE_SCANNER_RUNNING=1; fi
           else
             IsRunning cmdagent
             if [ ${RUNNING} -eq 1 ]; then MCAFEE_SCANNER_RUNNING=1; fi
        fi
        if [ ${MCAFEE_SCANNER_RUNNING} -eq 1 ]; then
            FOUND=1
            Display --indent 2 --text "- Checking McAfee" --result "FOUND" --color GREEN
            logtext "Result: Found McAfee"
            MALWARE_SCANNER_INSTALLED=1
            AddHP 2 2
            report "malware_scanner[]=mcafee"

        fi
        # Sophos savscand/SophosScanD
        logtext "Test: checking process savscand"
        IsRunning savscand
        if [ ${RUNNING} -eq 1 ]; then
            FOUND=1
            SOPHOS_SCANNER_RUNNING=1
        fi
        logtext "Test: checking process SophosScanD"
        IsRunning SophosScanD
        if [ ${RUNNING} -eq 1 ]; then
            FOUND=1
            SOPHOS_SCANNER_RUNNING=1
        fi
        if [ ${SOPHOS_SCANNER_RUNNING} -eq 1 ]; then
            Display --indent 2 --text "- Checking Sophos" --result "FOUND" --color GREEN
            logtext "Result: Found Sophos"
            MALWARE_SCANNER_INSTALLED=1
            AddHP 2 2
            report "malware_scanner[]=sophos"
        fi
        if [ ${FOUND} -eq 0 ]; then
            logtext "Result: no commercial anti-virus tools found"
            AddHP 0 3
        fi
    fi
#
#################################################################################
#
    # Test        : MALW-3282
    # Description : Check if clamscan is installed
    Register --test-no MALW-3282 --weight L --network NO --description "Check for clamscan"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: checking presence clamscan"
        if [ ! "${CLAMSCANBINARY}" = "" ]; then
            Display --indent 2 --text "- Checking ClamAV scanner" --result "FOUND" --color GREEN
            logtext "Result: Found ${CLAMSCANBINARY}"
            MALWARE_SCANNER_INSTALLED=1
            CLAMSCAN_INSTALLED=1
            AddHP 2 2
          else
            logtext "Result: clamscan couldn't be found"
        fi
    fi
#
#################################################################################
#
    # Test        : MALW-3284
    # Description : Check running clamd process
    Register --test-no MALW-3284 --weight L --network NO --description "Check for clamd"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: checking running ClamAV daemon (clamd)"
        IsRunning clamd
        if [ ${RUNNING} -eq 1 ]; then
            Display --indent 2 --text "- Checking ClamAV daemon" --result "FOUND" --color GREEN
            logtext "Result: found running clamd process"
            MALWARE_SCANNER_INSTALLED=1
            CLAMD_RUNNING=1
          else
            logtext "Result: clamd not running"
        fi
    fi
#
#################################################################################
#
    # Test        : MALW-3286
    # Description : Check running freshclam if clamd process is running
    if [ ${CLAMD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no MALW-3286 --preqs-met ${PREQS_MET} --weight L --network NO --description "Check for freshclam"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: checking running freshclam daemon"
        IsRunning freshclam
        if [ ${RUNNING} -eq 1 ]; then
            FRESHCLAM_DAEMON_RUNNING=1
            Display --indent 4 --text "- Checking freshclam" --result "FOUND" --color GREEN
            logtext "Result: found running freshclam process"
            AddHP 2 2
          else
            Display --indent 4 --text "- Checking freshclam" --result "SUGGESTION" --color YELLOW
            logtext "Result: freshclam is not running"
            ReportSuggestion ${TEST_NO} "Confirm that freshclam is properly configured and keeps updating the ClamAV database"
        fi
    fi
#
#################################################################################
#
    # Test        : MALW-3288
    # Description : Check for ClamXav (Mac OS X)
    if [ -d /Applications/ClamXav.app/Contents/Resources/ScanningEngine/bin/ ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no MALW-3288 --preqs-met ${PREQS_MET} --weight L --network NO --description "Check for ClamXav"
    if [ ${SKIPTEST} -eq 0 ]; then
        CLAMSCANBINARY=`ls /Applications/ClamXav.app/Contents/Resources/ScanningEngine/bin/ 2> /dev/null | grep 'clamscan'`
        if [ ! "${CLAMSCANBINARY}" = "" ]; then
            logtext "Result: Found ClamXav clamscan installed"
            Display --indent 2 --text "- Checking presence of ClamXav AV scanner" --result "FOUND" --color GREEN
            MALWARE_SCANNER_INSTALLED=1
            CLAMSCAN_INSTALLED=1
            AddHP 3 3
          else
            logtext "Result: ClamXav malware scanner not found"
            AddHP 0 3
        fi
    fi
#
#################################################################################
#
    # Check if we found any of the ClamAV components
    if [ ${CLAMSCAN_INSTALLED} -eq 1 -o ${CLAMD_RUNNING} -eq 1 -o ${FRESHCLAM_DAEMON_RUNNING} -eq 1 ]; then
        report "malware_scanner[]=clamav"
    fi
#
#################################################################################
#

report "malware_scanner_installed=${MALWARE_SCANNER_INSTALLED}"


wait_for_keypress

#
#================================================================================
# Lynis - Copyright 2007-2015, Michael Boelen, CISOfy - https://cisofy.com