Win32.Expiro.76

Technical Information

To ensure autorun and distribution:

Creates the following services:

[<HKLM>\SYSTEM\ControlSet001\Services\NetDDE] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\MSIServer] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\mnmsrvc] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\RDSessMgr] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\WmiApSrv] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\VSS] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\TlntSvr] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\clr_optimization_v2.0.50727_32] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\ClipSrv] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\CiSvc] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\clr_optimization_v4.0.30319_32] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\ImapiService] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\idsvc] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\dmadmin] 'Start' = '00000002'

Changes the following executable system files:

<SYSTEM32>\sndrec32.exe
<SYSTEM32>\mstsc.exe
<SYSTEM32>\sndvol32.exe
<SYSTEM32>\ntbackup.exe
<SYSTEM32>\mspaint.exe
<SYSTEM32>\utilman.exe
<SYSTEM32>\osk.exe
<SYSTEM32>\mobsync.exe
<SYSTEM32>\calc.exe
<SYSTEM32>\accwiz.exe
<SYSTEM32>\charmap.exe
<SYSTEM32>\winmine.exe
<SYSTEM32>\mshearts.exe
<SYSTEM32>\sol.exe
<SYSTEM32>\wupdmgr.exe
<SYSTEM32>\spider.exe
<SYSTEM32>\usmt\migwiz.exe
<SYSTEM32>\cleanmgr.exe
<SYSTEM32>\Restore\rstrui.exe
<SYSTEM32>\freecell.exe
<SYSTEM32>\odbcad32.exe
%WINDIR%\Microsoft.NET\Framework\v3.0\Windows Communication Foundation\infocard.exe
<SYSTEM32>\dmadmin.exe
<SYSTEM32>\imapi.exe
<SYSTEM32>\msiexec.exe
<SYSTEM32>\mnmsrvc.exe
<SYSTEM32>\cisvc.exe
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\aspnet_state.exe
<SYSTEM32>\clipsrv.exe
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\mscorsvw.exe
<SYSTEM32>\netdde.exe
<SYSTEM32>\wbem\wmiapsrv.exe
<SYSTEM32>\vssvc.exe
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\WPF\WPFFontCache_v0400.exe
<SYSTEM32>\narrator.exe
<SYSTEM32>\magnify.exe
<SYSTEM32>\sessmgr.exe
<SYSTEM32>\locator.exe
<SYSTEM32>\scardsvr.exe
<SYSTEM32>\tlntsvr.exe
<SYSTEM32>\smlogsvc.exe

Infects the following executable files:

<SYSTEM32>\ntbackup.exe
<SYSTEM32>\mspaint.exe
<SYSTEM32>\sndvol32.exe
<SYSTEM32>\usmt\migwiz.exe
<SYSTEM32>\cleanmgr.exe
<SYSTEM32>\charmap.exe
<SYSTEM32>\accwiz.exe
%PROGRAM_FILES%\Outlook Express\msimn.exe
<SYSTEM32>\mobsync.exe
<SYSTEM32>\sndrec32.exe
<SYSTEM32>\mstsc.exe
<SYSTEM32>\calc.exe
<SYSTEM32>\spider.exe
<SYSTEM32>\sol.exe
<SYSTEM32>\winmine.exe
<SYSTEM32>\wupdmgr.exe
%PROGRAM_FILES%\Movie Maker\moviemk.exe
%PROGRAM_FILES%\MSN\MSNCoreFiles\Install\msnsusii.exe
%PROGRAM_FILES%\Windows NT\Accessories\wordpad.exe
<SYSTEM32>\Restore\rstrui.exe
%CommonProgramFiles%\Microsoft Shared\MSInfo\msinfo32.exe
<SYSTEM32>\mshearts.exe
<SYSTEM32>\freecell.exe
<SYSTEM32>\odbcad32.exe
%PROGRAM_FILES%\Windows Media Player\wmplayer.exe
<SYSTEM32>\mnmsrvc.exe
<SYSTEM32>\imapi.exe
%WINDIR%\Microsoft.NET\Framework\v3.0\Windows Communication Foundation\infocard.exe
<SYSTEM32>\locator.exe
<SYSTEM32>\netdde.exe
<SYSTEM32>\msiexec.exe
<SYSTEM32>\clipsrv.exe
<SYSTEM32>\cisvc.exe
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\aspnet_state.exe
<SYSTEM32>\dmadmin.exe
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\mscorsvw.exe
<SYSTEM32>\narrator.exe
<SYSTEM32>\magnify.exe
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\WPF\WPFFontCache_v0400.exe
%PROGRAM_FILES%\Outlook Express\wab.exe
<SYSTEM32>\utilman.exe
<SYSTEM32>\osk.exe
<SYSTEM32>\smlogsvc.exe
<SYSTEM32>\scardsvr.exe
<SYSTEM32>\sessmgr.exe
<SYSTEM32>\wbem\wmiapsrv.exe
<SYSTEM32>\vssvc.exe
<SYSTEM32>\tlntsvr.exe

Malicious functions:

Executes the following:

'<SYSTEM32>\imapi.exe'
'<SYSTEM32>\msiexec.exe' /V
'%WINDIR%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe'
'<SYSTEM32>\cisvc.exe'
'%WINDIR%\Microsoft.NET\Framework\v2.0.50727\mscorsvw.exe'

Modifies settings of Windows Internet Explorer:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2103' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1609' = '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] '2103' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1609' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '2103' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1406' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '2103' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1609' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '1609' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1609' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '1406' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '2103' = '00000000'

Modifies file system :

Creates the following files:

<SYSTEM32>\afaqkaok.tmp
<SYSTEM32>\pijiegfa.tmp
<SYSTEM32>\ncjookla.tmp
<SYSTEM32>\amhadgcp.tmp
<SYSTEM32>\dklkkafp.tmp
<SYSTEM32>\nnknaeep.tmp
<SYSTEM32>\nklemblo.tmp
<LS_APPDATA>\wsr31zt32.dll
%PROGRAM_FILES%\Outlook Express\ogamajhn.tmp
<SYSTEM32>\hqnbqpoo.tmp
%APPDATA%\Mozilla\Firefox\Profiles\cwdgt0y8.default\extensions\{571d7B73-b934-cf2d-b846-20687f011a38}\chrome.manifest
%APPDATA%\Mozilla\Firefox\Profiles\cwdgt0y8.default\extensions\{571d7B73-b934-cf2d-b846-20687f011a38}\components\rooka.js
%APPDATA%\Mozilla\Firefox\Profiles\cwdgt0y8.default\extensions\{571d7B73-b934-cf2d-b846-20687f011a38}\chrome\content.jar
%APPDATA%\Mozilla\Firefox\Profiles\cwdgt0y8.default\extensions\{571d7B73-b934-cf2d-b846-20687f011a38}\install.rdf
<SYSTEM32>\klonohhl.tmp
<SYSTEM32>\knqknjlo.tmp
<SYSTEM32>\nimidobm.tmp
<SYSTEM32>\gakpqfhp.tmp
<SYSTEM32>\gmoggjie.tmp
<SYSTEM32>\cpkcoelj.tmp
%PROGRAM_FILES%\Movie Maker\odadaonc.tmp
%PROGRAM_FILES%\MSN\MSNCoreFiles\Install\emdpmifb.tmp
%CommonProgramFiles%\Microsoft Shared\MSInfo\iibndipn.tmp
<SYSTEM32>\usmt\ighnagcm.tmp
<SYSTEM32>\jiianoje.tmp
<SYSTEM32>\Restore\gdaoemja.tmp
<SYSTEM32>\eqiodbdg.tmp
<SYSTEM32>\akaajeom.tmp
%PROGRAM_FILES%\Windows NT\Accessories\onakajab.tmp
<SYSTEM32>\molnmpoh.tmp
<SYSTEM32>\mfmhlgab.tmp
%WINDIR%\Microsoft.NET\Framework\v3.0\Windows Communication Foundation\ppjnpoga.tmp
<SYSTEM32>\daloegpj.tmp
<SYSTEM32>\fnffldai.tmp
<SYSTEM32>\dkdqoppl.tmp
<SYSTEM32>\omjkqajl.tmp
<SYSTEM32>\mneepcpb.tmp
<SYSTEM32>\kkalojbe.tmp
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\fdnicqfm.tmp
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\piejdjmk.tmp
%WINDIR%\Microsoft.NET\Framework\v3.0\Windows Communication Foundation\llfambah.tmp
<SYSTEM32>\pfldjpig.tmp
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\mhhmlkmk.tmp
<SYSTEM32>\hlalekpn.tmp
<SYSTEM32>\bfbqeadb.tmp
<SYSTEM32>\nfejejod.tmp
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\WPF\lcmccdla.tmp
<SYSTEM32>\qilieipm.tmp
%PROGRAM_FILES%\Windows Media Player\ckoacohj.tmp
%PROGRAM_FILES%\Outlook Express\kibmbdbm.tmp
<SYSTEM32>\kgcfamjk.tmp
<SYSTEM32>\cboglgjc.tmp
<SYSTEM32>\cefmlgaj.tmp
<SYSTEM32>\gkkbnjga.tmp
<SYSTEM32>\lpkphhep.tmp
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\WPF\ddcmnonj.tmp
<SYSTEM32>\wbem\kdmdhimg.tmp
<SYSTEM32>\aegbbadp.tmp

Deletes the following files:

<SYSTEM32>\nklemblo.tmp
<SYSTEM32>\amhadgcp.tmp
<SYSTEM32>\afaqkaok.tmp
<SYSTEM32>\klonohhl.tmp
<SYSTEM32>\dklkkafp.tmp
<SYSTEM32>\nnknaeep.tmp
<SYSTEM32>\pijiegfa.tmp
<SYSTEM32>\hqnbqpoo.tmp
%PROGRAM_FILES%\Windows Media Player\ckoacohj.tmp
%PROGRAM_FILES%\Outlook Express\kibmbdbm.tmp
<SYSTEM32>\ncjookla.tmp
%APPDATA%\Mozilla\Firefox\Profiles\cwdgt0y8.default\extensions.sqlite.new
%PROGRAM_FILES%\Outlook Express\ogamajhn.tmp
<SYSTEM32>\jiianoje.tmp
<SYSTEM32>\gmoggjie.tmp
<SYSTEM32>\knqknjlo.tmp
<SYSTEM32>\nimidobm.tmp
<SYSTEM32>\cpkcoelj.tmp
%PROGRAM_FILES%\Movie Maker\odadaonc.tmp
%PROGRAM_FILES%\MSN\MSNCoreFiles\Install\emdpmifb.tmp
<SYSTEM32>\gakpqfhp.tmp
<SYSTEM32>\Restore\gdaoemja.tmp
%CommonProgramFiles%\Microsoft Shared\MSInfo\iibndipn.tmp
<SYSTEM32>\usmt\ighnagcm.tmp
<SYSTEM32>\eqiodbdg.tmp
<SYSTEM32>\akaajeom.tmp
%PROGRAM_FILES%\Windows NT\Accessories\onakajab.tmp
<SYSTEM32>\molnmpoh.tmp
<SYSTEM32>\mfmhlgab.tmp
%WINDIR%\Microsoft.NET\Framework\v3.0\Windows Communication Foundation\ppjnpoga.tmp
<SYSTEM32>\dkdqoppl.tmp
<SYSTEM32>\omjkqajl.tmp
<SYSTEM32>\daloegpj.tmp
%WINDIR%\Microsoft.NET\Framework\v3.0\Windows Communication Foundation\llfambah.tmp
<SYSTEM32>\mneepcpb.tmp
<SYSTEM32>\kkalojbe.tmp
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\fdnicqfm.tmp
<SYSTEM32>\pfldjpig.tmp
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\mhhmlkmk.tmp
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\piejdjmk.tmp
<SYSTEM32>\hlalekpn.tmp
<SYSTEM32>\nfejejod.tmp
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\WPF\ddcmnonj.tmp
%WINDIR%\Microsoft.NET\Framework\v4.0.30319\WPF\lcmccdla.tmp
<SYSTEM32>\kgcfamjk.tmp
<SYSTEM32>\qilieipm.tmp
<SYSTEM32>\bfbqeadb.tmp
<SYSTEM32>\wbem\kdmdhimg.tmp
<SYSTEM32>\cefmlgaj.tmp
<SYSTEM32>\gkkbnjga.tmp
<SYSTEM32>\fnffldai.tmp
<SYSTEM32>\lpkphhep.tmp
<SYSTEM32>\aegbbadp.tmp
<SYSTEM32>\cboglgjc.tmp

Miscellaneous:

Searches for the following windows:

ClassName: 'Shell_TrayWnd' WindowName: '(null)'

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