EtreCheck found a change in configuration files. What does it mean?

I ran EtreCheck in El Capitan and it said about Configuration Files "/etc/sudoers. File size 2411 but expected 2299". I recently had a problem with a hacker and have been cleaning up the mess. Can this be related to that hacking?

EtreCheck version: 4.1 (4A162)

Report generated: 2018-03-02 16:03:39

Download EtreCheck from https://etrecheck.com

Runtime: 3:04

Performance: Good

Problem: Other problem

Major Issues:

Anything that appears on this list needs immediate attention.

Modified suoders file - The sudoers file has been modified. This is unusual and is sometimes evidence of malware.

/etc/sudoers, File Size 2411 but expected 1563

Minor Issues:

These issues do not need immediate attention but they may indicate future problems.

Unsigned files - There is unsigned software installed. It appears to be legitimate but should be reviewed.

32-bit Apps - This machine has 32-bits apps that may have problems in the future.

Hardware Information:

iMac (21.5-inch, Mid 2011)

iMac Model: iMac12,1

1 2.5 GHz Intel Core i5 (i5-2400S) CPU: 4-core

16 RAM At maximum

BANK 0/DIMM0

4 GB DDR3 1333 ok

BANK 1/DIMM0

4 GB DDR3 1333 ok

BANK 0/DIMM1

4 GB DDR3 1333 ok

BANK 1/DIMM1

4 GB DDR3 1333 ok

Video Information:

AMD Radeon HD 6750M - VRAM: 512 MB

iMac 1920 x 1080

Drives:

disk0 - WDC WD5000AAKS-402AA0 500.11 GB (Mechanical)

Internal SATA 3 Gigabit Serial ATA

disk0s1 - EFI (MS-DOS FAT32) [EFI] 210 MB

disk0s2 - Macintosh HD (Journaled HFS+) 499.11 GB

disk0s3 - Recovery HD (Journaled HFS+) [Recovery] 650 MB

disk1 - Western Digital My Passport 25E4 2.00 TB

External USB 480 Mbit/s

disk1s1 - EFI (MS-DOS FAT32) [EFI] 210 MB

disk1s2 - M***********2 (Journaled HFS+) 499.03 GB

disk1s3 - Recovery HD (Journaled HFS+) [Recovery] 650 MB

disk1s4 - S******U (Journaled HFS+) 1.50 TB

Mounted Volumes:

disk0s2 - Macintosh HD 499.11 GB (466.50 GB free)

Journaled HFS+

Mount point: /

disk1s2 - M***********2 499.03 GB (470.35 GB free)

Journaled HFS+

Mount point: /Volumes/M***********2

disk1s4 - S******U 1.50 TB (1.43 TB free)

Journaled HFS+

Mount point: /Volumes/S******U

Network:

Interface en0: Ethernet

One IPv4 address

Interface fw0: FireWire

Interface en1: Wi-Fi

802.11 a/b/g/n

Interface bridge0: Thunderbolt Bridge

System Software:

macOS Sierra 10.12.6 (16G1212)

Time since boot: Less than an hour

System Load: 1.86 (1 min ago) 1.54 (5 min ago) 1.46 (15 min ago)

Configuration Files:

File /etc/sudoers size but expected

Security:

Unsigned Files:

Launchd: /Library/LaunchAgents/net.culater.SIMBL.Agent.plist

Executable: /Library/ScriptingAdditions/SIMBL.osax/Contents/Resources/SIMBL Agent.app/Contents/MacOS/SIMBL Agent

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchAgents/com.maintain.ShutDown.plist

Executable: /usr/bin/osascript -e delay 3 -e try -e do shell script "killall Cocktail" -e end try -e ignoring application responses -e try -e tell application "System Events" to shut down -e end try -e end ignoring

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchAgents/com.coupons.coupond.plist

Executable: /Library/Application Support/Coupons/coupond launchd

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchDaemons/com.oracle.java.Helper-Tool.plist

Executable: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/Helper-Tool

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchAgents/com.oracle.java.Java-Updater.plist

Executable: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/Java Updater.app/Contents/MacOS/Java Updater -bgcheck

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchAgents/com.brother.LOGINserver.plist

Executable: /Library/Printers/Brother/Utilities/Server/LOGINserver.app/Contents/MacOS/LOGIN server

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchAgents/com.maintain.Restart.plist

Executable: /usr/bin/osascript -e delay 3 -e try -e do shell script "killall Cocktail" -e end try -e ignoring application responses -e try -e tell application "System Events" to restart -e end try -e end ignoring

Details: Exact match found in the whitelist - probably OK

32-bit Applications:

Kernel Extensions:

/Library/Extensions

[Loaded] FileProtect.kext (Bitdefender SRL, 1.1 - SDK 10.11)

[Loaded] SelfProtect.kext (Bitdefender SRL, 1.2.9 - SDK 10.8)

[Loaded] TMProtection.kext (Bitdefender SRL, 5.0.0 - SDK 10.11)

System Launch Agents:

System Launch Daemons:

Launch Agents:

Launch Daemons:

User Launch Agents:

Internet Plug-ins:

FlashPlayer-10.6: 28.0.0.161 (installed 2018-02-06)

Flash Player: 28.0.0.161 (installed 2018-02-06)

QuickTime Plugin: 7.7.3 (installed 2018-02-02)

JavaAppletPlugin: Java 8 Update 161 build 12 (installed 2018-02-18)

EPPEX Plugin: 10.0 (installed 2013-09-25)

PepperFlashPlayer: 28.0.0.161 (installed 2018-02-06)

Safari Extensions:

3rd Party Preference Panes:

AppTrap (installed 2017-02-26)

Flash Player (installed 2018-02-01)

Java (installed 2018-02-18)

Time Machine:

Skip System Files: No

Mobile backups: No

Auto backup: Yes

Volumes being backed up:

Macintosh HD: Disk size: 499.11 GB - Disk used: 32.61 GB

Destinations:

S******U [Local] (Last used)

Total size: 1.50 TB

Total number of backups: 52

Oldest backup: 2017-12-03 01:45:26

Last backup: 2018-03-02 15:57:22

Top Processes by CPU:

Top Processes by Memory:

Top Processes by Network Use:

Top Processes by Energy Use:

Virtual Memory Information:

Software Installs (past 30 days):

Diagnostics Information (past 7 days):

2018-03-02 15:50:12 SIMBL Agent.app Crash

2018-02-28 21:02:55 BDLDaemon CPU

End of report