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Win32.Expiro.71
Added to the Dr.Web virus database:
2014-01-02
Virus description added:
2014-01-15
Technical Information
To ensure autorun and distribution:
Creates the following services:
[<HKLM>\SYSTEM\ControlSet001\services\clr_optimization_v4.0.30319_32] 'Start' = '00000002'
Changes the following executable system files:
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\aspnet_state.exe
Infects the following executable files:
C:\Far2\Far.exe
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\aspnet_state.exe
Malicious functions:
Executes the following:
'%WINDIR%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe'
Modifies settings of Windows Internet Explorer:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1609' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2103' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1406' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1406' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1406' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1609' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '2103' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1609' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1406' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1609' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '2103' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '2103' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '2103' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '1406' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '1609' = '00000000'
Modifies file system :
Creates the following files:
%APPDATA%\Roaming\Mozilla\Firefox\Profiles\zp7tnb55.default\extensions\{201e7873-cb34-cf2d-c931-52697e700731}\chrome\content.jar
%APPDATA%\Roaming\Mozilla\Firefox\Profiles\zp7tnb55.default\extensions\{201e7873-cb34-cf2d-c931-52697e700731}\components\rooka.js
C:\Far2\ncjookla.tmp
%APPDATA%\Roaming\Mozilla\Firefox\Profiles\zp7tnb55.default\extensions\{201e7873-cb34-cf2d-c931-52697e700731}\install.rdf
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\jkdgogap.tmp
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\oohngadj.tmp
%APPDATA%\Roaming\Mozilla\Firefox\Profiles\zp7tnb55.default\extensions\{201e7873-cb34-cf2d-c931-52697e700731}\chrome.manifest
Deletes the following files:
%APPDATA%\Roaming\Mozilla\Firefox\Profiles\zp7tnb55.default\extensions.sqlite.new
C:\Far2\ncjookla.tmp
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\jkdgogap.tmp
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\oohngadj.tmp
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