Technical Information
Malicious functions:
Executes the following:
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "AutoSearch" /t REG_DWORD /d 4 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "FullScreen" /t REG_SZ /d no /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download" /v "RunInvalidSignatures" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "EnableSearchPane" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "Error Dlg Displayed On Every Error" /t REG_SZ /d no /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "AllowWindowReuse" /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "NscSingleExpand" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\taskkill.exe' /f /im "qdownload_setup.exe"
- '<SYSTEM32>\taskkill.exe' /f /im "qdownload_setup.msi"
- '<SYSTEM32>\taskkill.exe' /f /im "qdownservice.exe"
- '<SYSTEM32>\taskkill.exe' /f /im "qdownagent.exe"
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\IETld" /v "StaleIETldCache" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International" /v "CNum_CpCache" /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International" /v "CpCache" /t REG_BINARY /d e9fd0000 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes\{0EB91D06-CCAB-4326-B40B-CC9EA44F8499}" /v "ShowSearchSuggestions" /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BLOCK_LMZ_IMG" /v "iexplore.exe" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Cache" /v Persistent /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes\{0EB91D06-CCAB-4326-B40B-CC9EA44F8499}" /v "SuggestionsURL_JSON" /t REG_SZ /d "http://ac.###rch.naver.com/autocompl?m=#####################################" /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes\{0EB91D06-CCAB-4326-B40B-CC9EA44F8499}" /v "DisplayName" /t REG_SZ /d "Naver" /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes\{0EB91D06-CCAB-4326-B40B-CC9EA44F8499}" /v "URL" /t REG_SZ /d "http://se####.naver.com/search.naver?wh#######################################" /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes\{0EB91D06-CCAB-4326-B40B-CC9EA44F8499}" /v "FaviconURL" /t REG_SZ /d "http://www.na##r.com/favicon.ico" /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "SmoothScroll" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "Friendly http errors" /t REG_SZ /d yes /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "NotifyDownloadComplete" /t REG_SZ /d yes /f
- '<SYSTEM32>\reg.exe' DELETE "HKEY_LOCAL_MACHINE\SOFTWARE\COVISION" /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\Main" /v IEWatsonEnabled /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v DontUseDNSLoadBalancing /t reg_binary /d 01000000 /f
- '<SYSTEM32>\reg.exe' DELETE "HKLM\SOFTWARE\COVISION" /f
- '<SYSTEM32>\reg.exe' /pid=3112
- '<SYSTEM32>\reg.exe' delete "FIDownService"
- '<SYSTEM32>\reg.exe' /pid=3144
- '<SYSTEM32>\reg.exe' delete "ExpressService"
- '<SYSTEM32>\sc.exe' delete "QuickDownload Update"
- '<SYSTEM32>\sc.exe' delete "QuickDownload Service"
- '<SYSTEM32>\sc.exe' delete "QuickDownload Agent"
- '<SYSTEM32>\reg.exe' /pid=2752
- '<SYSTEM32>\cmd.exe' /c ""%TEMP%\selfdel0.bat" "
- '<SYSTEM32>\reg.exe' /pid=3436
- '<SYSTEM32>\reg.exe' -nohome
- '<SYSTEM32>\reg.exe' delete "HKCU\Software\SnapShot" /f
- '<SYSTEM32>\reg.exe' /f /im "iexplore.exe"
- '<SYSTEM32>\reg.exe' /pid=3192
- '<SYSTEM32>\net.exe' stop "QuickDownload Service"
- '<SYSTEM32>\xcopy.exe' stop "QuickDownload Service"
- '<SYSTEM32>\reg.exe' /pid=2792
- '<SYSTEM32>\net1.exe' stop "QuickDownload Agent"
- '<SYSTEM32>\taskkill.exe' /f /im "qdownupdate.exe"
- '<SYSTEM32>\taskkill.exe' /f /im "ExpressService.exe"
- '<SYSTEM32>\net.exe' stop "QuickDownload Agent"
- '<SYSTEM32>\net1.exe' stop "ExpressService"
- '<SYSTEM32>\net.exe' stop "FIDownService"
- '<SYSTEM32>\net1.exe' stop "FIDownService"
- '<SYSTEM32>\net.exe' stop "ExpressService"
- '<SYSTEM32>\reg.exe' /pid=2676
- '<SYSTEM32>\reg.exe' stop "QuickDownload Update"
- '<SYSTEM32>\net1.exe' stop "QuickDownload Update"
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes" /v "ShowSearchSuggestionsGlobal" /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Plug-in\1.6.0_20" /v "HideSystemTrayIcon" /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Plug-in\1.6.0_30" /v "HideSystemTrayIcon" /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\cuckoo.co.kr" /v "http" /t REG_DWORD /d 2 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Plug-in\1.6.0_07" /v "HideSystemTrayIcon" /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Plug-in\1.6.0_20" /v "UseJava2IExplorer" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Plug-in\1.6.0_30" /v "UseJava2IExplorer" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Plug-in\1.4.2_06" /v "HideSystemTrayIcon" /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1409 /t REG_DWORD /d 3 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v 1409 /t REG_DWORD /d 3 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1001 /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 2101 /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\cuckoo.domain" /v "http" /t REG_DWORD /d 2 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1809 /t REG_DWORD /d 3 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 2301 /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment\1.6.0_30" /v "JavaHome" /t REG_SZ /d "%PROGRAM_FILES%\Java\jre6" /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment\1.6.0_30" /v "RuntimeLib" /t REG_SZ /d "%PROGRAM_FILES%\Java\jre6\bin\client\jvm.dll" /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Plug-in\1.4.2.06" /v "UseNewJavaPlugin" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\xcopy.exe' /y priv.ser "%APPDATA%\..\.wt"
- '<SYSTEM32>\cmd.exe' /c ""%TEMP%\1.tmp\batchfile.bat" "
- '<SYSTEM32>\xcopy.exe' /y trusted.certs "%APPDATA%\Sun\Java\Deployment\security"
- '<SYSTEM32>\xcopy.exe' /y priv.ser "%APPDATA%\..\locallow\.wt"
- '<SYSTEM32>\reg.exe' delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /v "SunJavaUpdateSched" /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Plug-in\1.4.2_06" /v "UseJava2IExplorer" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Plug-in\1.6.0_07" /v "UseJava2IExplorer" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Update\Policy" /v "EnableJavaUpdate" /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Plug-in\1.6.0_20" /v "UseNewJavaPlugin" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Plug-in\1.6.0_30" /v "UseNewJavaPlugin" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Update\Policy" /v "EnableAutoUpdateCheck" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\PhishingFilter" /v "Enabled" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\PhishingFilter" /v "ShownVerifyBalloon" /t REG_DWORD /d 3 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v UrlEncoding /t reg_dword /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Suggested Sites" /v "Enabled" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\TabbedBrowsing" /v "ShortcutBehavior" /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\New Windows" /v "PopupMgr" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\New Windows\Allow" /v "*.cuckoo.co.kr" /t REG_BINARY /d 00 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes" /v "DefaultScope" /t REG_SZ /d "{0EB91D06-CCAB-4326-B40B-CC9EA44F8499}" /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes" /v "DisplayQuickPick" /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes" /v "DownloadRetries" /t REG_DWORD /d o /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /t REG_SZ /d "http://si#####d.cuckoo.co.kr" /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v "ProxyHttp1.1" /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v SyncMode5 /t REG_DWORD /d 3 /f
- '<SYSTEM32>\reg.exe' DELETE "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "Window_Placement" /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1405 /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1209 /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1605 /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1201 /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v 1001 /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1004 /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v 1004 /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\TabbedBrowsing" /v "OpenAdjacent" /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\TabbedBrowsing" /v "OpenInForeground" /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\TabbedBrowsing" /v "PopupsUseNewWindow" /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v 2200 /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 1803 /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" /v 1803 /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" /v 2200 /t REG_DWORD /d 0 /f
Injects code into
the following system processes:
- <SYSTEM32>\reg.exe
- <SYSTEM32>\xcopy.exe
Terminates or attempts to terminate
the following user processes:
- iexplore.exe
Modifies settings of Windows Internet Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1209' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1605' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1201' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1405' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '2200' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2200' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1803' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1803' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1004' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '2101' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1409' = '00000003'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1809' = '00000003'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '2301' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1001' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1004' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1409' = '00000003'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1001' = '00000000'
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
- %WINDIR%\ip.bat
- %HOMEPATH%\.wt\priv.ser
- %WINDIR%\ipp.bat
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\silkroad.cuckoo.co[1]
- %TEMP%\selfdel0.bat
- %TEMP%\1.tmp\priv.ser
- %TEMP%\1.tmp\batchfile.bat
- %TEMP%\1.tmp\trusted.certs
- %HOMEPATH%\locallow\.wt\priv.ser
- %APPDATA%\Sun\Java\Deployment\security\trusted.certs
Deletes the following files:
- %TEMP%\1.tmp\trusted.certs
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\silkroad.cuckoo.co[1]
- %TEMP%\1.tmp\batchfile.bat
- %TEMP%\1.tmp\priv.ser
Deletes itself.
Network activity:
Connects to:
- 'si#####d.cuckoo.co.kr':80
- 'localhost':1035
TCP:
HTTP GET requests:
- si#####d.cuckoo.co.kr/
UDP:
- DNS ASK si#####d.cuckoo.co.kr
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_AutodialMonitor' WindowName: '(null)'
- ClassName: 'MS_WebcheckMonitor' WindowName: '(null)'
- ClassName: 'IEFrame' WindowName: '(null)'
- ClassName: '(null)' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
