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Trojan.FakeAV.16538

Added to the Dr.Web virus database: 2014-01-28

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Classes\CLSID\{98641F47-8C25-4936-BEE4-C2CE1298969D}\Shell\Open\command] '' = 'Control Userpasswords2'
  • [<HKLM>\SOFTWARE\Classes\*\shell\open\command] '' = 'notepad.exe %1'
  • [<HKLM>\SOFTWARE\Classes\hta_auto_file\shell\open\command] '' = '"<SYSTEM32>\mshta.exe" "%1"'
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SENS] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\seclogon] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SamSs] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\Schedule] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\TrkWks] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\winmgmt] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\Themes] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\ShellHWDetection] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\Spooler] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\RpcSs] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\Dhcp] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\Dnscache] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\DcomLaunch] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\AudioSrv] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\Browser] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\lanmanworkstation] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\ProtectedStorage] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\lanmanserver] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\Eventlog] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\HidServ] 'Start' = '00000002'
Malicious functions:
Executes the following:
  • '<SYSTEM32>\sc.exe' config seclogon start= auto
  • '<SYSTEM32>\sc.exe' config SENS start= auto
  • '<SYSTEM32>\sc.exe' config Schedule start= auto
  • '<SYSTEM32>\sc.exe' config SamSs start= auto
  • '<SYSTEM32>\sc.exe' config SCardSvr start= disabled
  • '<SYSTEM32>\sc.exe' config srservice start= demand
  • '<SYSTEM32>\sc.exe' config SSDPSRV start= disabled
  • '<SYSTEM32>\sc.exe' config Spooler start= auto
  • '<SYSTEM32>\sc.exe' config SharedAccess start= auto
  • '<SYSTEM32>\sc.exe' config ShellHWDetection start= auto
  • '<SYSTEM32>\sc.exe' config RSVP start= disabled
  • '<SYSTEM32>\sc.exe' config RasAuto start= disabled
  • '<SYSTEM32>\sc.exe' config RasMan start= demand
  • '<SYSTEM32>\sc.exe' config ProtectedStorage start= auto
  • '<SYSTEM32>\sc.exe' config PlugPlay start= demand
  • '<SYSTEM32>\sc.exe' config PolicyAgent start= disabled
  • '<SYSTEM32>\sc.exe' config RpcLocator start= disabled
  • '<SYSTEM32>\sc.exe' config RpcSs start= auto
  • '<SYSTEM32>\sc.exe' config RemoteRegistry start= disabled
  • '<SYSTEM32>\sc.exe' config RDSessMgr start= demand
  • '<SYSTEM32>\sc.exe' config RemoteAccess start= disabled
  • '<SYSTEM32>\sc.exe' config stisvc start= demand
  • '<SYSTEM32>\sc.exe' config Wmi start= disabled
  • '<SYSTEM32>\sc.exe' config WmiApSrv start= disabled
  • '<SYSTEM32>\sc.exe' config WmdmPmSN start= disabled
  • '<SYSTEM32>\sc.exe' config WebClient start= disabled
  • '<SYSTEM32>\sc.exe' config winmgmt start= auto
  • '<SYSTEM32>\sc.exe' config xmlprov start= disabled
  • '<SYSTEM32>\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update" /v AUOptions /d 00000002 /t REG_DWORD /f
  • '<SYSTEM32>\sc.exe' config WZCSVC start= demand
  • '<SYSTEM32>\sc.exe' config wscsvc start= disabled
  • '<SYSTEM32>\sc.exe' config wuauserv start= disabled
  • '<SYSTEM32>\sc.exe' config W32Time start= disabled
  • '<SYSTEM32>\sc.exe' config TermService start= demand
  • '<SYSTEM32>\sc.exe' config Themes start= auto
  • '<SYSTEM32>\sc.exe' config TapiSrv start= demand
  • '<SYSTEM32>\sc.exe' config SwPrv start= demand
  • '<SYSTEM32>\sc.exe' config SysmonLog start= disabled
  • '<SYSTEM32>\sc.exe' config UPS start= demand
  • '<SYSTEM32>\sc.exe' config VSS start= disabled
  • '<SYSTEM32>\sc.exe' config upnphost start= disabled
  • '<SYSTEM32>\sc.exe' config TlntSvr start= disabled
  • '<SYSTEM32>\sc.exe' config TrkWks start= auto
  • '<SYSTEM32>\sc.exe' config dmadmin start= demand
  • '<SYSTEM32>\sc.exe' config dmserver start= demand
  • '<SYSTEM32>\sc.exe' config Dhcp start= auto
  • '<SYSTEM32>\sc.exe' config CryptSvc start= disabled
  • '<SYSTEM32>\sc.exe' config DcomLaunch start= auto
  • '<SYSTEM32>\sc.exe' config ERSvc start= disabled
  • '<SYSTEM32>\sc.exe' config Eventlog start= auto
  • '<SYSTEM32>\sc.exe' config EapHost start= demand
  • '<SYSTEM32>\sc.exe' config Dnscache start= auto
  • '<SYSTEM32>\sc.exe' config Dot3svc start= demand
  • '<SYSTEM32>\sc.exe' config COMSysApp start= disabled
  • '<SYSTEM32>\sc.exe' config ALG start= demand
  • '<SYSTEM32>\sc.exe' config AppMgmt start= disabled
  • '<SYSTEM32>\sc.exe' config Alerter start= disabled
  • '<SYSTEM32>\cmd.exe' /c ""%TEMP%\RarSFX0\setup.cmd" "
  • '%WINDIR%\regedit.exe' /s tweaks.reg
  • '<SYSTEM32>\sc.exe' config cisvc start= disabled
  • '<SYSTEM32>\sc.exe' config ClipSrv start= disabled
  • '<SYSTEM32>\sc.exe' config Browser start= auto
  • '<SYSTEM32>\sc.exe' config AudioSrv start= auto
  • '<SYSTEM32>\sc.exe' config BITS start= demand
  • '<SYSTEM32>\sc.exe' config EventSystem start= demand
  • '<SYSTEM32>\sc.exe' config NetDDE start= disabled
  • '<SYSTEM32>\sc.exe' config NetDDEdsdm start= disabled
  • '<SYSTEM32>\sc.exe' config napagent start= demand
  • '<SYSTEM32>\sc.exe' config MSDTC start= disabled
  • '<SYSTEM32>\sc.exe' config MSIServer start= demand
  • '<SYSTEM32>\sc.exe' config NtLmSsp start= disabled
  • '<SYSTEM32>\sc.exe' config NtmsSvc start= demand
  • '<SYSTEM32>\sc.exe' config Nla start= demand
  • '<SYSTEM32>\sc.exe' config Netlogon start= disabled
  • '<SYSTEM32>\sc.exe' config Netman start= demand
  • '<SYSTEM32>\sc.exe' config mnmsrvc start= disabled
  • '<SYSTEM32>\sc.exe' config hkmsvc start= demand
  • '<SYSTEM32>\sc.exe' config HTTPFilter start= demand
  • '<SYSTEM32>\sc.exe' config HidServ start= auto
  • '<SYSTEM32>\sc.exe' config FastUserSwitchingCompatibility start= disabled
  • '<SYSTEM32>\sc.exe' config helpsvc start= disabled
  • '<SYSTEM32>\sc.exe' config LmHosts start= disabled
  • '<SYSTEM32>\sc.exe' config Messenger start= disabled
  • '<SYSTEM32>\sc.exe' config lanmanworkstation start= auto
  • '<SYSTEM32>\sc.exe' config ImapiService start= demand
  • '<SYSTEM32>\sc.exe' config lanmanserver start= auto
Modifies settings of Windows Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoUserNameInStartMenu' = '00000000'
Modifies settings of Windows Internet Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1004' = '00000003'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments] 'SaveZoneInformation' = '00000001'
  • [<HKCU>\Software\Microsoft\Internet Explorer\Download] 'CheckExeSignatures' = 'no'
  • [<HKCU>\Software\Microsoft\Internet Explorer\Download] 'RunInvalidSignatures' = '00000001'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Associations] 'LowRiskFileTypes' = '.zip;.rar;.nfo;.txt;.exe;.bat;.com;.cmd;.reg;.msi;.htm;.html;.gif;.bmp;.jpg;.avi;.mpg;.mpeg;.mov;.mp3;.m3u;.wav;'
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
  • %TEMP%\RarSFX0\tweaks.reg
  • %TEMP%\RarSFX0\setup.cmd
Deletes the following files:
  • %TEMP%\RarSFX0\tweaks.reg
  • %TEMP%\RarSFX0\setup.cmd
Miscellaneous:
Searches for the following windows:
  • ClassName: 'RegEdit_RegEdit' WindowName: '(null)'
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'
  • ClassName: 'EDIT' WindowName: '(null)'

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.
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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.

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  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