Thanks Kurt, here's my EtreCheck report.
EtreCheck version: 3.4.6 (460)
Report generated 2018-02-09 16:59:31
Download EtreCheck from https://etrecheck.com
Runtime: 7:05
Performance: Below Average
Click the [Lookup] links for more information from Apple Support Communities.
Click the [Details] links for more information about that line.
Problem: Other problem
Hardware Information: ⓘ
MacBook Air (13-inch, Early 2015)
[Technical Specifications] - [User Guide] - [Warranty & Service]
MacBook Air - model: MacBookAir7,2
1 1.6 GHz Intel Core i5 (i5-5250U) CPU: 2-core
4 GB RAM Not upgradeable
BANK 0/DIMM0
2 GB DDR3 1600 MHz ok
BANK 1/DIMM0
2 GB DDR3 1600 MHz ok
Handoff/Airdrop2: supported
Wireless: en0: 802.11 a/b/g/n/ac
Battery: Health = Normal - Cycle count = 211
Video Information: ⓘ
Intel HD Graphics 6000 - VRAM: 1536 MB
Color LCD 1440 x 900
Disk Information: ⓘ
APPLE SSD SM0256G disk0: (251 GB) (Solid State - TRIM: Yes)
[Show SMART report]
EFI (disk0s1 - MS-DOS FAT32) <not mounted> [EFI]: 210 MB
(disk0s2) <not mounted> [APFS Container]: 250.79 GB
USB Information: ⓘ
USB30Bus
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information: ⓘ
Apple Inc. thunderbolt_bus
Virtual disks: ⓘ
Macintosh HD (disk1s1 - APFS) / [Startup]: 250.79 GB (57.56 GB free)
Physical disk: disk0s2 250.79 GB (57.56 GB free)
(disk1s2) <not mounted> [Preboot]: 250.79 GB
Physical disk: disk0s2 250.79 GB
(disk1s3) <not mounted> [Recovery]: 250.79 GB
Physical disk: disk0s2 250.79 GB
(disk1s4) /private/var/vm [VM]: 250.79 GB
Physical disk: disk0s2 250.79 GB
System Software: ⓘ
macOS High Sierra 10.13.3 (17D47) - Time since boot: about one hour
Gatekeeper: ⓘ
Mac App Store and identified developers
Kernel Extensions: ⓘ
/Library/Extensions
[loaded] at.obdev.nke.LittleSnitch (4.0.2 - SDK 10.11) [Lookup]
[loaded] com.comodo.kext.FileAccessFilter (1.0.2 - SDK 10.10) [Lookup]
System Launch Agents: ⓘ
[not loaded] 9 Apple tasks
[loaded] 178 Apple tasks
[running] 83 Apple tasks
[killed] 20 Apple tasks
20 processes killed due to insufficient RAM
System Launch Daemons: ⓘ
[not loaded] 38 Apple tasks
[loaded] 186 Apple tasks
[running] 87 Apple tasks
[killed] 21 Apple tasks
21 processes killed due to insufficient RAM
Launch Agents: ⓘ
[running] at.obdev.LittleSnitchHelper.plist (Objective Development Software GmbH - installed 2017-08-30) [Lookup]
[running] at.obdev.LittleSnitchUIAgent.plist (Objective Development Software GmbH - installed 2017-08-30) [Lookup]
[running] com.comodo.Agent.plist (? ad1f90d6 c39330b3 - installed 2018-01-14) [Lookup]
[running] com.comodo.TrayMenu.plist (? eb04919d 2a09a6d5 - installed 2018-01-14) [Lookup]
[loaded] com.google.keystone.agent.plist (Google, Inc. - installed 2017-10-04) [Lookup]
Launch Daemons: ⓘ
[running] at.obdev.littlesnitchd.plist (Objective Development Software GmbH - installed 2017-08-30) [Lookup]
[loaded] com.apple.installer.osmessagetracing.plist (Apple, Inc. - installed 2018-01-19)
[running] com.comodo.fileaccessdaemon.plist (COMODO Security Solutions, Inc - installed 2016-06-22) [Lookup]
[loaded] com.google.keystone.daemon.plist (Google, Inc. - installed 2017-10-12) [Lookup]
[running] com.objectiveSee.blockblock.plist (Objective-See, LLC - installed 2018-01-31) [Lookup]
[loaded] com.xujiwei.PortsMonitor.Helper.plist (Jiwei Xu - installed 2017-08-23) [Lookup]
User Launch Agents: ⓘ
[running] com.objectiveSee.blockblock.plist (Objective-See, LLC - installed 2018-01-31) [Lookup]
[running] com.spotify.webhelper.plist (Spotify - installed 2018-02-09) [Lookup]
User Login Items: ⓘ
OverSight Helper Application (Objective-See, LLC - installed 2017-09-24)
(/Applications/OverSight.app/Contents/Library/LoginItems/OverSight Helper.app)
Wondershare Helper Compact Application
(~/Library/Application Support/Helper/Wondershare Helper Compact.app)
Internet Plug-ins: ⓘ
o1dbrowserplugin: 5.41.3.0 (installed 2017-10-04) [Lookup]
googletalkbrowserplugin: 5.41.3.0 (installed 2015-12-11) [Lookup]
QuickTime Plugin: 7.7.3 (installed 2018-02-09)
Safari Extensions: ⓘ
None
3rd Party Preference Panes: ⓘ
None
Time Machine: ⓘ
Time Machine not configured!
Top Processes by CPU: ⓘ
30% diagnosticd
29% Xcode
23% Console
11% mdworker
10% mdworker
Top Processes by Memory: ⓘ
610 MB kernel_task
142 MB com.apple.WebKit.WebContent
115 MB Finder
110 MB Safari
96 MB Console
Top Processes by Network Use: ⓘ
Input Output Process name
2 MB 207 KB Spotify
26 KB 23 KB mDNSResponder
5 KB 7 KB apsd
5 KB 558 B netbiosd
0 B 64 B SystemUIServer
Top Processes by Energy Use: ⓘ
5.32 diagnosticd
5.20 coreaudiod
4.06 Console
3.96 Activity Monitor
2.60 com.apple.WebKit.WebContent
Virtual Memory Information: ⓘ
1.12 GB Available RAM
255 MB Free RAM
2.88 GB Used RAM
891 MB Cached files
60 MB Swap Used
Software installs (last 30 days): ⓘ
Comodo-AV-Installer: (installed 2018-01-14)
Slack: 3.0.5 (installed 2018-01-20)
Wireshark 2.5.0 Intel 64: (installed 2018-02-06)
ReimageCleanerApp: (installed 2018-02-09)
ReimageCleaner: (installed 2018-02-09)
Install information may not be complete.
Diagnostics Events (last 3 days for minor events): ⓘ
2018-02-09 15:08:42 Last shutdown cause: 3 - Hard shutdown
2018-02-09 14:57:16 RansomWhere High CPU use [Open] [Details]
2018-02-08 09:45:37 com.apple.WebKit.Networking High CPU use [Open] [Details]
2018-02-06 23:43:45 Wireshark.app Crash [Open]
2018-02-06 22:44:02 Where.app Crash [Open]
Files deleted by EtreCheck: ⓘ
2018-02-09 16:13:31 - ~/Library/LaunchAgents/com.dropbox.DropboxMacUpdate.agent.plist - Unknown
2018-02-09 16:13:31 - ~/Library/LaunchAgents/com.wondershare.TunesGoHelper.plist - Unknown
2018-02-09 16:34:30 - /Library/LaunchDaemons/com.reimage.cleaner.plist - Unknown
