Check for Adware per Apple Kbase article

AdwareCheckExtensionAttribute.py

#!/usr/bin/python
"""Identify or remove files known to be involved in Adware/Malware
infection.

Most of the code applies to building a list of malware files. Thus,
both extension attribute and removal handling are included.

Cleans files as a Casper script policy; thus, it expects four total
arguments, the first three of which it doesn't use, followed by
--remove

"""

import glob
import os
import re
import shutil
import sys
import syslog


# https://support.apple.com/en-us/ht203987
known_malware = {
    '/System/Library/Frameworks/v.framework',
    '/System/Library/Frameworks/VSearch.framework',
    '/Library/PrivilegedHelperTools/Jack',
    '/Library/InputManagers/CTLoader/',
    '/Library/Application Support/Conduit/',
    '/Applications/SearchProtect.app',
    '/private/etc/launchd.conf',
    '/Applications/Genieo',
    '/Applications/InstallMac',
    '/Applications/Uninstall Genieo',
    '/Applications/Uninstall IM Completer.app',
    '/usr/lib/libgenkit.dylib',
    '/usr/lib/libgenkitsa.dylib',
    '/usr/lib/libimckit.dylib',
    '/usr/lib/libimckitsa.dylib',
    '/Library/PrivilegedHelperTools/com.genieoinnovation.macextension.client',
    '/Library/Frameworks/GenieoExtra.framework',
    '/Library/LaunchAgents/com.genieo.completer.update.plist',
    '/Library/LaunchAgents/com.genieo.engine.plist',
    '/Library/LaunchAgents/com.genieoinnovation.macextension.client.plist',
    '/Library/LaunchAgents/com.genieoinnovation.macextension.plist',
    '/Library/LaunchDaemons/com.genieoinnovation.macextension.client.plist',
    '/Library/LaunchDaemons/Jack.plist'
    '/Users/*/Library/Internet Plug-Ins/ConduitNPAPIPlugin.plugin',
    '/Users/*/Library/Internet Plug-Ins/TroviNPAPIPlugin.plugin',
    '/Users/*/Library/Application Support/Genieo/',
    '/Users/*/Library/Application Support/com.genieoinnovation.Installer/',
    '/Users/*/Conduit/',
    '/Users/*/Trovi/',
    '/Users/*/Library/Caches/com.Conduit.takeOverSearchAssetsMac',
    '/Users/*/Library/Caches/com.VSearch.bulk.installer',
    '/Users/*/Library/Caches/com.VSearch.VSinstaller',
    '/Users/*/Library/LaunchAgents/com.genieo.completer.download.plist',
    '/Users/*/Library/LaunchAgents/com.genieo.completer.ltvbit.plist',
    '/Users/*/Library/LaunchAgents/com.genieo.completer.update.plist',
    '/Users/*/Library/Preferences/com.genieo.global.settings.plist.lockfile',
    '/Users/*/Library/Preferences/com.geneio.settings.plist.lockfile',
    '/Users/*/Library/Preferences/com.geneio.global.settings.plist',
    '/Users/*/Library/Saved Application State/com.genieo.RemoveGenieoMac.savedState',
    '/Users/*/Library/Saved Application State/com.VSearch.bulk.installer.savedstate',
    '/Users/*/Library/LaunchAgents/com.jdibackup.ZipCloud.autostart.plist'}

found_malware = {match for filename in known_malware for match in
                 glob.glob(filename)}

# Look for "ProjectX" variants.
# This adware seems to have a different name each time it pops up.
# Apple's solution is too broad. We look at the files Apple suggests,
# but then also search within to see if they are calling a known
# binary file, "agent.app/Contents/MacOS/agent".
projectx_files = {
    '/Library/LaunchAgents/com.*.agent.plist',
    '/Library/LaunchDaemons/com.*.helper.plist',
    '/Library/LaunchDaemons/com.*.daemon.plist',
}

projectx_candidates = {match for filename in projectx_files for match in
                 glob.glob(filename)}

agent_regex = re.compile('.*/Library/Application Support/(.*)/Agent/agent.app/Contents/MacOS/agent')
for candidate in projectx_candidates:
    with open(candidate, 'r') as candidate_file:
        launchd_job = candidate_file.read()

    if re.search(agent_regex, launchd_job):
        found_malware.add(candidate)
        # If we find a Launch[Agent|Daemon] that has ProgramArguments
        # which runs "agent", find the unique name for this instance.
        # We can then use it to find the Application Support folder.
        obfuscated_name = re.search(agent_regex, launchd_job).group(1)
        found_malware.add('/Library/Application Support/%s' % obfuscated_name)

# Is this an EA or a script execution (Casper scripts always have 3
# args, so we can't just use the first argument.
if len(sys.argv) == 1:
    # Extension attribute (First arg is always script name).
    result = '<result>'
    if found_malware:
        result += 'True\n'
        for item in enumerate(found_malware):
            result += "%d: %s\n" % item
    else:
        result += 'False'

    print('%s</result>' % result)

elif "--remove" in sys.argv:
    # Removal script.
    syslog.syslog(syslog.LOG_ALERT, "Looking for malware")
    for item in found_malware:
        try:
            if os.path.isdir(item):
                shutil.rmtree(item)
            elif os.path.isfile(item):
                os.remove(item)
            syslog.syslog(syslog.LOG_ALERT, "Removed malware file:  %s" % item)
        except OSError as e:
            syslog.syslog(syslog.LOG_ALERT,
                          "Failed to remove malware file:  %s, %s" % (item, e))

Hey Shea, I found that this is still missing quite a bit of adware. I modified your version with more definitions and added a section so it will delete chrome and firefox preferences files if adware is found.
Not sure how to post the code properly so here ya go.

!/usr/bin/python

"""Identify or remove files known to be involved in Adware/Malware
infection.

Most of the code applies to building a list of malware files. Thus,
both extension attribute and removal handling are included.

Cleans files as a Casper script policy; thus, it expects four total
arguments, the first three of which it doesn't use, followed by
--remove
"""

import glob
import os
import re
import shutil
import sys
import syslog

known_malware = {

#SearchMe
'/Users//Library/Safari/Extensions/Searchme.safariextz',

#ZipCloud
 '/Users/*/Library/LaunchAgents/com.jdibackup.ZipCloud.autostart.plist',


#MacKeeper
'/Users/*/Library/LaunchAgents/com.zeobit.MacKeeper.Helper.plist',
'/Users/*/Library/Preferences/com.installmc.global.settings.plist',
'/Users/*/Library/Preferences/com.installmc.settings.plist',
'/Users//Library/LaunchAgents/com.mackeeper.MacKeeper.Helper.plist',

#VSearch
'/Users/*/Library/Caches/com.VSearch.bulk.installer',
'/Users/*/Library/Caches/com.VSearch.VSinstaller',
'/Users/*/Library/Saved Application State/com.VSearch.bulk.installer.savedstate',

#IM Installer
'/Users/*/Library/Application Support/IM.Installer/',
'/Users/*/Library/Preferences/com.IM.partner.settings.plist',

#Installer Completer
'/Users/*/Library/LaunchAgents/com.Installer.completer.download.plist',
'/Users/*/Library/LaunchAgents/com.Installer.completer.ltvbit.plist',
'/Users/*/Library/LaunchAgents/com.Installer.completer.update.plist',


# FkCodec
'/Users/*/Library/Application Support/Codec-M',
'/Users/*/Library/LaunchAgents/com.codecm.uploader.plist',
'/Applications/Codec-M.app',

#Yontoo
'/Users/*/Library/Application Support/Google/Chrome/YontooLayers.crx',

#ChatZum
'/Applications/ChatZumUninstaller.pkg',
'/Library/Application Support/SIMBL/Plugins/SafariOmnibar.bundle',
'/Library/Internet Plug-Ins/uid.plist',
'/Library/Internet Plug-Ins/zako.plugin',

#Spigot
'/Users/*/Library/Application Support/Spigot/',

#SaveKeep
'/Applications/Savekeep.app',

#Conduit
'/Users/*/Library/Application Support/Google/Chrome/Default/Extensions/cbmjmfcldbpelhknnfjbkobmabafpoed',
'/Library/InputManagers/CTLoader/',
'/Library/LaunchAgents/com.conduit.loader.agent.plist',
'/Library/LaunchDaemons/com.perion.searchprotectd.plist',
'/Library/Application Support/SIMBL/Plugins/CT2285220.bundle',
'/Library/Application Support/Conduit/',
'/Applications/SearchProtect.app',
'/Applications/SearchProtect/',
'/Users/*/Conduit/',
'/Users/*/Trovi/',
'/Users/*/Library/Application Support/Conduit',
'/Users/*/Library/Internet Plug-Ins/ConduitNPAPIPlugin.plugin',
'/Users/*/Library/Internet Plug-Ins/TroviNPAPIPlugin.plugin',
'/Users/*/Library/Application Support/Firefox/searchplugins/MyBrand.xml',
'/Users/*/Library/Application Support/Firefox/searchplugins/conduit.xml',
'/Users/*/Library/Application Support/Firefox/searchplugins/"Conduit Customized Web Search".xml',
'/Users/*/Library/Application Support/Firefox/takeOverNewTab.txt',
'/Users/*/Library/Application Support/Firefox/abstraction.js',
'/Users/*/Library/Caches/com.Conduit.takeOverSearchAssetsMac',

#Downlite
'/Library/Application Support/VSearch',
'/Library/LaunchAgents/com.vsearch.agent.plist',
'/Library/LaunchDaemons/com.vsearch.daemon.plist',
'/Library/LaunchDaemons/com.vsearch.helper.plist',
'/Library/LaunchDaemons/Jack.plist',
'/Library/PrivilegedHelperTools/Jack',
'/System/Library/Frameworks/VSearch.framework',
'/System/Library/Frameworks/v.framework',

#SearchProtect
'/Applications/SearchProtect/Data',
'/Applications/SearchProtect/SearchProtect.app',
'/Applications/SearchProtect/Uninstaller.app',
'/Applications/SearchProtect/takeOverSearchAssetsMac.app', 

#GoPhoto
'/Users/*/Library/Application Support/Google/Chrome/External Extensions/ccfjbdjailljfihgkoccfbiljjapiijb.json',

#Genieo
'/Users/*/Library/LaunchAgents/com.genieo.completer.download.plist',
'/Users/*/Library/LaunchAgents/com.genieo.completer.update.plist',
'/Users/*/Library/LaunchAgents/com.genieo.completer.ltvbit.plist',
'/Library/LaunchAgents/com.genieoinnovation.macextension.plist',
'/Library/LaunchAgents/com.genieoinnovation.macextension.client.plist',
'/Library/LaunchAgents/com.genieo.engine.plist',
'/Library/LaunchAgents/com.genieo.completer.update.plist',
'/Library/LaunchDaemons/com.genieoinnovation.macextension.client.plist',
'/Applications/Genieo',
'/Applications/Genieo.app',
'/Applications/InstallMac',
'/Applications/InstallMac.app',
'/Applications/InstallGenieo',
'/Applications/InstallGenieo.app',
'/Applications/Reset Search',
'/Applications/Reset Search.app',
'/Applications/Uninstall Genieo',
'/Applications/Uninstall Genieo.app',
'/Applications/Uninstall IM Completer',
'/Applications/Uninstall IM Completer.app',
'/Users/*/Library/Application Support/com.genieoinnovation.Installer',
'/Users/*/Library/Application Support/Genieo',
'/Library/PrivilegedHelperTools/com.genieoinnovation.macextension.client',
'/Library/Frameworks/GenieoExtra.framework',
'/Users/*/Library/Application Support/Firefox/searchplugins/my-homepage.xml',
'/Users/*/Library/Application Support/Genieo/',
'/Users/*/Library/Application Support/com.genieoinnovation.Installer/',
'/Users/*/Library/Preferences/com.genieo.global.settings.plist.lockfile',
'/Users/*/Library/Preferences/com.geneio.settings.plist.lockfile',
'/Users/*/Library/Preferences/com.geneio.global.settings.plist',
'/Users/*/Library/Saved Application State/com.genieo.RemoveGenieoMac.savedState',
'/Users/*/Library/Preferences/com.genieo.settings.plist',
'/private/etc/launchd.conf',
'/usr/lib/libgenkit.dylib',
'/usr/lib/libgenkitsa.dylib',
'/usr/lib/libimckit.dylib',
'/usr/lib/libimckitsa.dylib',

#Vidx/MacVX
'/Applications/Vidx.app',
'/Library/Safari/Extensions/extension.safariextz',

#Best Youtube Downloader
'/Users/*/Library/LaunchAgents/com.moeppfdpoohhdcaefbfpmabjipnohiif.updater.plist',
'/Users/*/Library/Application Support/Google/Chrome/External Extensions/phpdijfdkggndfmgcfdhcimlflflnega.json',
'/Users/*/Library/LaunchAgents/Safari Security',
'/Users/*/Library/LaunchAgents/WebSocketServerApp',
'/Users/*/Library/LaunchAgents/com.webtools.update.agent.plist',
'/Users/*/Library/Application Support/webHelperApp/',
'/Users/*/Library/WebTools/',

#PremierOpinion
'/Applications/PremierOpinion',
'/Library/LaunchDaemons/PremierOpinion.plist',

}

found_malware = {match for filename in known_malware for match in
glob.glob(filename)}

settings_files = {
'/Users//Library/Application Support/Google/Chrome/Default/Preferences',
'/Users//Library/Application Support/Firefox/user.js',
'/Users/*/Library/Application Support/Firefox/prefs.js',

}

active_settings = {match for filename in settings_files for match in
glob.glob(filename)}

Look for "ProjectX" variants.

This adware seems to have a different name each time it pops up.

Apple's solution is too broad. We look at the files Apple suggests,

but then also search within to see if they are calling a known

binary file, "agent.app/Contents/MacOS/agent".

projectx_files = {
'/Library/LaunchAgents/com..agent.plist',
'/Library/LaunchDaemons/com..helper.plist',
'/Library/LaunchDaemons/com.*.daemon.plist',
}

projectx_candidates = {match for filename in projectx_files for match in
glob.glob(filename)}

agent_regex = re.compile('./Library/Application Support/(.)/Agent/agent.app/Contents/MacOS/agent')
for candidate in projectx_candidates:
with open(candidate, 'r') as candidate_file:
launchd_job = candidate_file.read()

if re.search(agent_regex, launchd_job):
    found_malware.add(candidate)
    # If we find a Launch[Agent|Daemon] that has ProgramArguments
    # which runs "agent", find the unique name for this instance.
    # We can then use it to find the Application Support folder.
    obfuscated_name = re.search(agent_regex, launchd_job).group(1)
    found_malware.add('/Library/Application Support/%s' % obfuscated_name)

Is this an EA or a script execution (Casper scripts always have 3

args, so we can't just use the first argument.

if len(sys.argv) == 1:
# Extension attribute (First arg is always script name).
result = ''
if found_malware:
result += 'True\n'
for item in enumerate(found_malware):
result += "%d: %s\n" % item
else:
result += 'False'

print('%s</result>' % result)

elif "--remove" in sys.argv:
# Removal script.
syslog.syslog(syslog.LOG_ALERT, "Looking for malware")
for item in found_malware:
try:
if os.path.isdir(item):
shutil.rmtree(item)
elif os.path.isfile(item):
os.remove(item)
syslog.syslog(syslog.LOG_ALERT, "Removed malware file: %s" % item)
except OSError as e:
syslog.syslog(syslog.LOG_ALERT,
"Failed to remove malware file: %s, %s" % (item, e))

syslog.syslog(syslog.LOG_ALERT, "Looking for settings files")                     
for item in active_settings:
    try:
        if os.path.isdir(item):
            shutil.rmtree(item)
        elif os.path.isfile(item):
            os.remove(item)
        syslog.syslog(syslog.LOG_ALERT, "Removed setting file file:  %s" % item)
    except OSError as e:
        syslog.syslog(syslog.LOG_ALERT,
                      "Failed to remove settings file:  %s, %s" % (item, e))

Just for the record I want to state that the above contributions include software not considered malware or adware, but just undesirable to admins in an enterprise environment.