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Trojan.AVKill.23497

Added to the Dr.Web virus database: 2012-09-29

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Classes\.exe] '' = 'pngfile'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
Executes the following:
  • <SYSTEM32>\net.exe stop "*norton*" /y
  • <SYSTEM32>\net1.exe stop ERSvc /y
  • <SYSTEM32>\net1.exe stop "*norton*" /y
  • <SYSTEM32>\net1.exe stop "*Symantec*" /y
  • <SYSTEM32>\net.exe stop "*Symantec*" /y
  • <SYSTEM32>\net.exe stop ERSvc /y
  • <SYSTEM32>\net.exe stop MpfService /y
  • <SYSTEM32>\net1.exe stop MskService /y
  • <SYSTEM32>\net1.exe stop MpfService /y
  • <SYSTEM32>\net1.exe stop mcupdmgr.exe /y
  • <SYSTEM32>\net.exe stop mcupdmgr.exe /y
  • <SYSTEM32>\net.exe stop "norton AntiVirus Server" /y
  • <SYSTEM32>\net1.exe stop "Symantec AntiVirus Client" /y
  • <SYSTEM32>\net1.exe stop "norton AntiVirus Server" /y
  • <SYSTEM32>\net1.exe stop "NAV Alert" /y
  • <SYSTEM32>\net.exe stop "NAV Alert" /y
  • <SYSTEM32>\net.exe stop "Symantec AntiVirus Client" /y
  • <SYSTEM32>\net1.exe stop ccPwdSvc /y
  • <SYSTEM32>\net.exe stop ccPwdSvc /y
  • <SYSTEM32>\net.exe stop "Serv-U" /y
  • <SYSTEM32>\net1.exe stop "norton AntiVirus Client" /y
  • <SYSTEM32>\net.exe stop "norton AntiVirus Client" /y
  • <SYSTEM32>\net.exe stop MskService /y
  • <SYSTEM32>\net1.exe stop MonSvcNT /y
  • <SYSTEM32>\net.exe stop MonSvcNT /y
  • <SYSTEM32>\net.exe stop SAVScan /y
  • <SYSTEM32>\net.exe stop NProtectService /y
  • <SYSTEM32>\net1.exe stop SAVScan /y
  • <SYSTEM32>\net1.exe stop vrmonsvc /y
  • <SYSTEM32>\net1.exe stop navapsvc /y
  • <SYSTEM32>\net.exe stop navapsvc /y
  • <SYSTEM32>\net.exe stop "Sygate Personal Firewall Pro" /y
  • <SYSTEM32>\net.exe stop vrmonsvc /y
  • <SYSTEM32>\net1.exe stop "Sygate Personal Firewall Pro" /y
  • <SYSTEM32>\net.exe stop "Symantec Network Drivers Service" /y
  • <SYSTEM32>\net1.exe stop srservice /y
  • <SYSTEM32>\net1.exe stop "Symantec Network Drivers Service" /y
  • <SYSTEM32>\net1.exe stop "norton Unerase Protection" /y
  • <SYSTEM32>\net.exe stop "norton Unerase Protection" /y
  • <SYSTEM32>\net.exe stop srservice /y
  • <SYSTEM32>\net.exe stop ccSetMGR /y
  • <SYSTEM32>\net1.exe stop NProtectService /y
  • <SYSTEM32>\net1.exe stop ccSetMGR /y
  • <SYSTEM32>\net1.exe stop ccEvtMGR /y
  • <SYSTEM32>\net.exe stop ccEvtMGR /y
  • <SYSTEM32>\net.exe stop "Nav Auto-Protect" /y
  • <SYSTEM32>\net1.exe stop "Sophos Anti-Virus" /y
  • <SYSTEM32>\net.exe stop "Sophos Anti-Virus" /y
  • <SYSTEM32>\net.exe stop "Sophos Anti-Virus Network" /y
  • <SYSTEM32>\net.exe stop "eTrust Antivirus Job Server" /y
  • <SYSTEM32>\net1.exe stop "Sophos Anti-Virus Network" /y
  • <SYSTEM32>\net1.exe stop "SyGateService" /y
  • <SYSTEM32>\net1.exe stop "McAfee.com McShield" /y
  • <SYSTEM32>\net.exe stop "McAfee.com McShield" /y
  • <SYSTEM32>\net.exe stop "McAfee.com VirusScan Online Realtime Engine" /y
  • <SYSTEM32>\net.exe stop "SyGateService" /y
  • <SYSTEM32>\net1.exe stop "McAfee.com VirusScan Online Realtime Engine" /y
  • <SYSTEM32>\net.exe stop spoolnt
  • <SYSTEM32>\net1.exe stop netsvcs
  • <SYSTEM32>\net1.exe stop spoolnt
  • <SYSTEM32>\attrib.exe +h "%TEMP%\1.tmp\CYBER.bat"
  • <SYSTEM32>\net1.exe user %USERNAME% DELmE
  • <SYSTEM32>\net.exe stop netsvcs
  • <SYSTEM32>\net.exe stop "eTrust Antivirus Realtime Server" /y
  • <SYSTEM32>\net1.exe stop "eTrust Antivirus Job Server" /y
  • <SYSTEM32>\net1.exe stop "eTrust Antivirus Realtime Server" /y
  • <SYSTEM32>\net1.exe stop "eTrust Antivirus RPC Server" /y
  • <SYSTEM32>\net.exe stop "eTrust Antivirus RPC Server" /y
  • <SYSTEM32>\net1.exe stop "Trend NT Realtime Service" /y
  • <SYSTEM32>\net.exe stop InoRPC /y
  • <SYSTEM32>\net1.exe stop eventlog /y
  • <SYSTEM32>\net1.exe stop InoRPC /y
  • <SYSTEM32>\net1.exe stop InoRT /y
  • <SYSTEM32>\net.exe stop InoRT /y
  • <SYSTEM32>\net.exe stop eventlog /y
  • <SYSTEM32>\net.exe stop "McShield" /y
  • <SYSTEM32>\net1.exe stop "Nav Auto-Protect" /y
  • <SYSTEM32>\net1.exe stop "McShield" /y
  • <SYSTEM32>\net1.exe stop "DefWatch" /y
  • <SYSTEM32>\net.exe stop "DefWatch" /y
  • <SYSTEM32>\net1.exe stop "PC-cillin Personal Firewall" /y
  • <SYSTEM32>\net.exe stop "PC-cillin Personal Firewall" /y
  • <SYSTEM32>\net.exe stop "Trend Micro Proxy Service" /y
  • <SYSTEM32>\net.exe stop "Trend NT Realtime Service" /y
  • <SYSTEM32>\net1.exe stop "Trend Micro Proxy Service" /y
  • <SYSTEM32>\net1.exe stop "ViRobot Professional Monitoring" /y
  • <SYSTEM32>\net1.exe stop InoTask /y
  • <SYSTEM32>\net.exe stop InoTask /y
  • <SYSTEM32>\net.exe stop "norton AntiVirus Corporate Edition" /y
  • <SYSTEM32>\net.exe stop "ViRobot Professional Monitoring" /y
  • <SYSTEM32>\net1.exe stop "norton AntiVirus Corporate Edition" /y
  • <SYSTEM32>\tskill.exe /A mcafe*
  • <SYSTEM32>\tskill.exe /A msmp*
  • <SYSTEM32>\tskill.exe /A mghtml
  • <SYSTEM32>\tskill.exe /A isafe
  • <SYSTEM32>\tskill.exe /A msiexec
  • <SYSTEM32>\tskill.exe /A gcasDt*
  • <SYSTEM32>\tskill.exe /A aswupdsv
  • <SYSTEM32>\tskill.exe /A ash*
  • <SYSTEM32>\tskill.exe /A ewid*
  • <SYSTEM32>\tskill.exe /A guar*
  • <SYSTEM32>\tskill.exe /A guard*
  • <SYSTEM32>\tskill.exe /A norton au*
  • <SYSTEM32>\tskill.exe /A norton*
  • <SYSTEM32>\tskill.exe /A ccc*
  • <SYSTEM32>\tskill.exe /A loge*
  • <SYSTEM32>\tskill.exe /A npfmn*
  • <SYSTEM32>\tskill.exe /A cc*
  • <SYSTEM32>\tskill.exe /A zauinst
  • <SYSTEM32>\tskill.exe /A zap*
  • <SYSTEM32>\tskill.exe /A upd*
  • <SYSTEM32>\tskill.exe /A minilog
  • <SYSTEM32>\tskill.exe /A zlclien*
  • <SYSTEM32>\tskill.exe /A avg*
  • <SYSTEM32>\tskill.exe /A spy*
  • <SYSTEM32>\tskill.exe /A anti*
  • <SYSTEM32>\tskill.exe /A bullguard
  • <SYSTEM32>\tskill.exe /A KAV*
  • <SYSTEM32>\tskill.exe /A PersFw
  • <SYSTEM32>\tskill.exe /A fire*
  • <SYSTEM32>\net.exe stop УSecurity CenterФ
  • <SYSTEM32>\cmd.exe /c ""%TEMP%\1.tmp\CYBER.bat" "
  • <SYSTEM32>\net1.exe stop УSecurity CenterФ
  • <SYSTEM32>\tskill.exe /A av*
  • <SYSTEM32>\netsh.exe firewall set opmode mode=disable
  • <SYSTEM32>\tskill.exe /A cle
  • <SYSTEM32>\tskill.exe /A ESAFE
  • <SYSTEM32>\tskill.exe /A BLACKICE
  • <SYSTEM32>\tskill.exe /A kav
  • <SYSTEM32>\tskill.exe /A def*
  • <SYSTEM32>\tskill.exe /A F-*
  • <SYSTEM32>\tskill.exe /A SAFEWEB
  • <SYSTEM32>\tskill.exe /A ZONEALARM
  • <SYSTEM32>\tskill.exe /A OUTPOST
  • <SYSTEM32>\tskill.exe /A nav*
  • <SYSTEM32>\tskill.exe /A nv*
  • <SYSTEM32>\tskill.exe /A nisum*
  • <SYSTEM32>\net1.exe stop "norton AntiVirus Firewall Monitor Service" /y
  • <SYSTEM32>\net.exe stop "norton AntiVirus Firewall Monitor Service" /y
  • <SYSTEM32>\net.exe stop "norton AntiVirus Auto-Protect Service" /y
  • <SYSTEM32>\net.exe stop "norton AntiVirus Auto Protect Service" /y
  • <SYSTEM32>\net1.exe stop "norton AntiVirus Auto-Protect Service" /y
  • <SYSTEM32>\net1.exe stop "SAVScan" /y
  • <SYSTEM32>\net1.exe stop "Automatic Updates" /y
  • <SYSTEM32>\net.exe stop "Automatic Updates" /y
  • <SYSTEM32>\net.exe stop "Symantec Core LC" /y
  • <SYSTEM32>\net.exe stop "SAVScan" /y
  • <SYSTEM32>\net1.exe stop "Symantec Core LC" /y
  • <SYSTEM32>\net.exe stop "Symantec SPBBCSvc" /y
  • <SYSTEM32>\net1.exe stop "McAfee SecurityCenter Update Manager" /y
  • <SYSTEM32>\net1.exe stop "Symantec SPBBCSvc" /y
  • <SYSTEM32>\net1.exe stop "Ahnlab Task Scheduler" /y
  • <SYSTEM32>\net.exe stop "Ahnlab Task Scheduler" /y
  • <SYSTEM32>\net.exe stop "McAfee SecurityCenter Update Manager" /y
  • <SYSTEM32>\net.exe stop "McAfee Spamkiller Server" /y
  • <SYSTEM32>\net1.exe stop "norton AntiVirus Auto Protect Service" /y
  • <SYSTEM32>\net1.exe stop "McAfee Spamkiller Server" /y
  • <SYSTEM32>\net1.exe stop "McAfee Personal Firewall Service" /y
  • <SYSTEM32>\net.exe stop "McAfee Personal Firewall Service" /y
  • <SYSTEM32>\net1.exe stop "Security Center" /y
  • <SYSTEM32>\tskill.exe /A padmin
  • <SYSTEM32>\tskill.exe /A pav*
  • <SYSTEM32>\tskill.exe /A panda*
  • <SYSTEM32>\tskill.exe /A sche*
  • <SYSTEM32>\tskill.exe /A avsch*
  • <SYSTEM32>\tskill.exe /A pop*
  • <SYSTEM32>\tskill.exe /A tmp*
  • <SYSTEM32>\tskill.exe /A issvc
  • <SYSTEM32>\tskill.exe /A tmn*
  • <SYSTEM32>\tskill.exe /A cpd*
  • <SYSTEM32>\tskill.exe /A pcc*
  • <SYSTEM32>\tskill.exe /A avas*
  • <SYSTEM32>\tskill.exe /A safe*
  • <SYSTEM32>\tskill.exe /A norm*
  • <SYSTEM32>\net.exe stop "Security Center" /y
  • <SYSTEM32>\tskill.exe /A offg*
  • <SYSTEM32>\tskill.exe /A ad-*
  • <SYSTEM32>\tskill.exe /A virus*
  • <SYSTEM32>\tskill.exe /A syman*
  • <SYSTEM32>\tskill.exe /A realm*
  • <SYSTEM32>\tskill.exe /A scan*
  • <SYSTEM32>\tskill.exe /A sweep*
Injects code into
the following user processes:
  • ash.exe
  • ccapp.exe
  • AVGCTRL.EXE
  • AVPCC.EXE
Terminates or attempts to terminate
the following user processes:
  • ash.exe
  • ashAvast.exe
  • NAVAPW32.EXE
  • ZONEALARM.EXE
  • outpost.exe
  • zlclient.exe
  • ccapp.exe
  • zapro.exe
  • ashAvSrv.exe
  • GUARD.EXE
  • AVP.COM
  • AVP.EXE
  • AVGCTRL.EXE
  • avgcc.exe
  • AVGCC32.EXE
  • AVSYNMGR.EXE
  • firefox.exe
  • AVPM.EXE
  • AVP32.EXE
  • AVPCC.EXE
Modifies file system :
Creates the following files:
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\drivetable.txt
  • %TEMP%\1.tmp\CYBER.bat
Sets the 'hidden' attribute to the following files:
  • %TEMP%\1.tmp\CYBER.bat
Deletes the following files:
  • %TEMP%\1.tmp\CYBER.bat

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
Download Dr.Web

Download by serial number

Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

Download Dr.Web

Download by serial number

  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

Find out more about Dr.Web for Android