Mac OS X Sierra - Plötzlich Gastaccount und Admin-Passwort weg

EtreCheck version: 3.1.5 (343)
Report generated 2017-04-23 21:05:50
Download EtreCheck from https://etrecheck.com
Runtime 2:38
Performance: Excellent

Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.

Problem: No problem - just checking

Hardware Information: ⓘ
    MacBook Pro (13-inch, Mid 2012) 
    [Technical Specifications] - [User Guide] - [Warranty & Service]
    MacBook Pro - model: MacBookPro9,2
    1 2,5 GHz Intel Core i5 (i5-3210M) CPU: 2-core
    8 GB RAM Upgradeable - [Instructions]
        BANK 0/DIMM0
            4 GB DDR3 1600 MHz ok
        BANK 1/DIMM0
            4 GB DDR3 1600 MHz ok
    Bluetooth: Good - Handoff/Airdrop2 supported
    Wireless:  en1: 802.11 a/b/g/n
    Battery: Health = Replace Soon - Cycle count = 1030

Video Information: ⓘ
    Intel HD Graphics 4000
        Color LCD 1280 x 800

System Software: ⓘ
    macOS Sierra  10.12.4 (16E195) - Time since boot: about 8 hours

Disk Information: ⓘ
    Samsung SSD 850 EVO 500GB disk0 : (500,11 GB) (Solid State - TRIM: Yes)
    [Show SMART report]
        EFI (disk0s1) <not mounted> : 210 MB 
        Recovery HD (disk0s3) <not mounted>  [Recovery]: 650 MB 
        Macintosh HD (disk1) /  [Startup]: 498.88 GB (150.65 GB free)
            Core Storage: disk0s2 499.25 GB Online

    HL-DT-ST DVDRW  GS31N   ()

USB Information: ⓘ
    Apple Inc. FaceTime HD Camera (Built-in) 
    Apple Inc. Apple Internal Keyboard / Trackpad 
    Apple Computer, Inc. IR Receiver 
    Apple Inc. BRCM20702 Hub 
        Apple Inc. Bluetooth USB Host Controller 

Thunderbolt Information: ⓘ
    Apple Inc. thunderbolt_bus

Configuration files: ⓘ
    /etc/sysctl.conf - File exists but not expected
    /etc/hosts - Count: 6

Gatekeeper: ⓘ
    Mac App Store and identified developers

Unknown Files: ⓘ
    /Library/LaunchAgents/com.avira.servicehub.license.plist
        /Library/Application Support/Avira/servicehubd.bundle/Contents/MacOS/servicehubd --mya_renew
    /Library/LaunchAgents/com.avira.servicehub.license.poll.plist
        /Library/Application Support/Avira/servicehubd.bundle/Contents/MacOS/servicehubd --mya_poll
    2 unknown files found. [Check files]

Kernel Extensions: ⓘ
        /Applications/FlowSync.app
    [not loaded]    com.joshuawise.kexts.HoRNDIS (8 - SDK 10.6 - 2017-02-11) [Support]

        /Library/Extensions
    [loaded]    com.avira.kext.FileAccessControl (1.2.5 - SDK 10.9 - 2017-04-22) [Support]

Startup Items: ⓘ
    TuxeraNTFSUnmountHelper: Path: /Library/StartupItems/TuxeraNTFSUnmountHelper
    Startup items no longer function in OS X Yosemite or later

System Launch Agents: ⓘ
    [not loaded]    7 Apple tasks
    [loaded]    176 Apple tasks
    [running]    99 Apple tasks

System Launch Daemons: ⓘ
    [not loaded]    41 Apple tasks
    [loaded]    173 Apple tasks
    [running]    104 Apple tasks

Launch Agents: ⓘ
    [not loaded]    com.adobe.AAM.Updater-1.0.plist (2017-01-12) [Support]
    [failed]    com.adobe.ARMDCHelper.cc24aef4a1b90ed56a725c38014c95072f92651fb65e1bf9c8e43c37a23d420d.plist (2017-01-10) [Support]
    [not loaded]    com.adobe.AdobeCreativeCloud.plist (2016-10-08) [Support]
    [not loaded]    com.avg.Antivirus.gui.plist [Support]
    [loaded]    com.avira.antivirus.general.agent.plist (2017-04-23) [Support]
    [loaded]    com.avira.antivirus.gjallarhorn.plist (2017-04-22) [Support]
    [loaded]    com.avira.antivirus.notifications.agent.plist (2017-04-23) [Support]
    [loaded]    com.avira.antivirus.odscan.default.plist (2017-04-23) [Support]
    [loaded]    com.avira.antivirus.scheduler.agent.plist (2017-04-23) [Support]
    [running]    com.avira.antivirus.systray.plist (2017-04-23) [Support]
    [loaded]    com.avira.antivirus.telemetry.agent.plist (2017-04-23) [Support]
    [loaded]    com.avira.antivirus.update.default.plist (2017-04-23) [Support]
    [running]    com.avira.helper.avstats.plist (2017-04-22) [Support]
    [loaded]    com.avira.servicehub.license.plist (2017-04-10) [Support]
    [loaded]    com.avira.servicehub.license.poll.plist (2017-04-10) [Support]
    [not loaded]    com.teamviewer.teamviewer.plist (2016-09-20) [Support]
    [not loaded]    com.teamviewer.teamviewer_desktop.plist (2016-09-19) [Support]

Launch Daemons: ⓘ
    [loaded]    com.adobe.ARMDC.Communicator.plist (2017-01-10) [Support]
    [loaded]    com.adobe.ARMDC.SMJobBlessHelper.plist (2017-01-10) [Support]
    [running]    com.adobe.adobeupdatedaemon.plist (2016-10-08) [Support]
    [running]    com.adobe.agsservice.plist (2017-03-10) [Support]
    [loaded]    com.adobe.fpsaud.plist (2017-04-17) [Support]
    [not loaded]    com.avg.Antivirus.crashpad.plist [Support]
    [not loaded]    com.avg.Antivirus.infosd.plist [Support]
    [not loaded]    com.avg.Antivirus.services.plist [Support]
    [loaded]    com.avira.antivirus.dbcleaner.plist (2017-04-23) [Support]
    [running]    com.avira.helper.watchdox.plist (2017-04-23) [Support]
    [running]    com.malwarebytes.HelperTool.plist (2017-04-22) [Support]
    [loaded]    com.microsoft.autoupdate.helper.plist (2017-04-13) [Support]
    [loaded]    com.microsoft.office.licensingV2.helper.plist (2015-08-15) [Support]
    [loaded]    com.teamviewer.Helper.plist (2016-09-19) [Support]
    [not loaded]    com.teamviewer.teamviewer_service.plist (2016-09-20) [Support]

User Launch Agents: ⓘ
    [loaded]    com.adobe.AAM.Updater-1.0.plist (2017-01-12) [Support]
    [loaded]    com.google.keystone.agent.plist (2017-03-30) [Support]
    [running]    com.spotify.webhelper.plist (2017-04-22) [Support]
    [loaded]    com.valvesoftware.steamclean.plist (2017-04-21) [Support]

User Login Items: ⓘ
    iTunesHelper    Programm   (2017-03-24)
        (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
    owncloud    Programm  
        (/Applications/owncloud.app)
    FlowSync    Programm  
        (/Applications/FlowSync.app)

Internet Plug-ins: ⓘ
    AdobeAAMDetect: 3.0.0.0 - SDK 10.9 (2016-10-08) [Support]
    FlashPlayer-10.6: 25.0.0.163 - SDK 10.9 (2017-04-21) [Support]
    QuickTime Plugin: 7.7.3 (2017-04-07)
    AdobePDFViewerNPAPI: 17.009.20044 - SDK 10.11 (2017-04-14) [Support]
    AdobePDFViewer: 17.009.20044 - SDK 10.11 (2017-04-14) [Support]
    Flash Player: 25.0.0.163 - SDK 10.9 (2017-04-21) [Support]
    Silverlight: 5.1.50709.0 - SDK 10.6 (2016-10-07) [Support]

3rd Party Preference Panes: ⓘ
    Flash Player (2017-04-17) [Support]
    Tuxera NTFS (2016-08-25) [Support]

Time Machine: ⓘ
    Auto backup: YES
    Volumes being backed up:
        Macintosh HD: Disk size: 498.88 GB Disk used: 348.23 GB
    Destinations:
        Luigi [Local] 
        Total size: 999.83 GB 
        Total number of backups: 9 
        Oldest backup: 26.08.16, 01:38 
        Last backup: 22.04.17, 17:02 
        Size of backup disk: Too small
            Backup size 999.83 GB < (Disk used 348.23 GB X 3)

Top Processes by CPU: ⓘ
         6%   	plugin-container
         4%   	kernel_task
         4%   	hidd
         2%   	AcroCEF
         2%   	Adobe InDesign CC 2015

Top Processes by Memory: ⓘ
    883 MB    	kernel_task
    631 MB    	firefox
    623 MB    	plugin-container
    254 MB    	mdworker(9)
    238 MB    	WhatsApp Helper(2)

Virtual Memory Information: ⓘ
    2.31 GB   	Available RAM
    99 MB     	Free RAM
    5.69 GB   	Used RAM
    2.22 GB   	Cached files
    798 MB    	Swap Used

Diagnostics Information: ⓘ
    Apr 23, 2017, 12:23:03 PM    Self test - passed
    Apr 23, 2017, 10:27:32 AM    /Library/Logs/DiagnosticReports/Microsoft Excel_2017-04-23-102732_[redacted].hang
        /Applications/Microsoft Excel.app/Contents/MacOS/Microsoft Excel
    Apr 23, 2017, 12:53:17 AM    /Library/Logs/DiagnosticReports/BitdefenderVirusScanner_2017-04-23-005317_[redacted].cpu_resource.diag [Details]
        /Applications/BitdefenderVirusScanner.app/Contents/MacOS/BitdefenderVirusScanner
    Apr 22, 2017, 04:30:07 PM    /Library/Logs/DiagnosticReports/AdobeGCClient_2017-04-22-163007_[redacted].crash
        /Library/Application Support/Adobe/*/AdobeGCClient.app/Contents/MacOS/AdobeGCClient
    Apr 22, 2017, 04:20:49 PM    /Library/Logs/DiagnosticReports/AdobeGCClient_2017-04-22-162049_[redacted].crash
    Apr 21, 2017, 06:27:10 PM    /Library/Logs/DiagnosticReports/Skype_2017-04-21-182710_[redacted].hang
        /Applications/Skype.app/Contents/MacOS/Skype
    Apr 21, 2017, 01:00:57 PM    /Library/Logs/DiagnosticReports/Mac_Runner_2017-04-21-130057_[redacted].cpu_resource.diag [Details]
        /Users/[redacted]/Library/Application Support/Steam/*/Iron Snout.app/Contents/MacOS/Mac_Runner
    Apr 21, 2017, 10:34:16 AM    /Library/Logs/DiagnosticReports/Mac_Runner_2017-04-21-103416_[redacted].cpu_resource.diag [Details]