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Win32.HLLW.Autoruner1.11691
Added to the Dr.Web virus database:
2012-02-08
Virus description added:
2020-05-04
Technical Information
To ensure autorun and distribution
Modifies the following registry keys
[<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\policies\Explorer\Run\] 'DirectX For MicrosoftВ® Windows' = '<SYSTEM32>\fservice.exe'
[<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\] 'StubPath' = '%WINDIR%\system\sservice.exe'
[<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\] 'Shell' = 'Explorer.exe <SYSTEM32>\fservice.exe'
[<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run\] 'DirectX For MicrosoftВ® Windows' = '<SYSTEM32>\fserv...
Malicious functions
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
Executes the following
'%WINDIR%\syswow64\net.exe' STOP srservice
'%WINDIR%\syswow64\net.exe' STOP navapsvc
Modifies file system
Creates the following files
%APPDATA%\xconfig.dat
%APPDATA%\5681789.exe
%WINDIR%\syswow64\fservice.exe
%WINDIR%\system\sservice.exe
%WINDIR%\services.exe
%WINDIR%\syswow64\winkey.dll
%WINDIR%\syswow64\reginv.dll
Sets the 'hidden' attribute to the following files
%WINDIR%\syswow64\fservice.exe
%WINDIR%\system\sservice.exe
%WINDIR%\services.exe
Deletes the following files
%WINDIR%\syswow64\fservice.exe
%WINDIR%\system\sservice.exe
Substitutes the following files
%WINDIR%\system\sservice.exe
Network activity
TCP
HTTP GET requests
http://www.yo###ite.com/cgi-bin/prorat.cgi?bi####################################################################################################################################################...
http://www.ic#.com/friendship/email_thank_you.php?fo#############################################################################################################################################...
'mt##.##0.yahoodns.net':25
UDP
DNS ASK yo#.#o-ip.com
DNS ASK ic#.com
DNS ASK yo###ite.com
DNS ASK ya##o.com
DNS ASK mt##.##0.yahoodns.net
Miscellaneous
Searches for the following windows
ClassName: '' WindowName: 'Windows services '
ClassName: '' WindowName: 'Windows Logon Service '
ClassName: '' WindowName: ''
ClassName: '' WindowName: 'ProConnective'
ClassName: '' WindowName: 'Windows services '
Creates and executes the following
'%APPDATA%\5681789.exe'
'%WINDIR%\syswow64\fservice.exe'
'%WINDIR%\services.exe' -XP
'%WINDIR%\syswow64\net.exe' STOP srservice' (with hidden window)
'%WINDIR%\syswow64\net.exe' STOP navapsvc' (with hidden window)
Executes the following
'<SYSTEM32>\rundll32.exe' <SYSTEM32>\FirewallControlPanel.dll,ShowNotificationDialog /configure /ETOnly 0 /OnProfiles 6 /OtherAllowed 0 /OtherBlocked 0 /OtherEdgeAllowed 0 /NewBlocked 4 "%WINDIR%\services.exe"
'%WINDIR%\syswow64\net1.exe' STOP srservice
'%WINDIR%\syswow64\net1.exe' STOP navapsvc
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