Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\Currentversion\Run] '{D9BCDA41-A605-AD44-B8E2-831792E4A00A}' = '%APPDATA%\Feap\degyep.exe'
Malicious functions
Injects code into
the following system processes:
- %WINDIR%\syswow64\cmd.exe
the following user processes:
- iexplore.exe
- winmail.exe
Hooks functions
in browsers
- iexplore.exe process, wininet.dll module
- firefox.exe process, wininet.dll module
- iexplore.exe process, crypt32.dll module
- firefox.exe process, crypt32.dll module
Modifies settings of Windows Internet Explorer
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1406' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1609' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1406' = '00000000'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1609' = '00000000'
Modifies file system
Creates the following files
- %APPDATA%\feap\degyep.exe
- %LOCALAPPDATA%low\ochyo.yby
- %TEMP%\tmp6a2aa8a9.bat
- %TEMP%\ppcrlui_2352_2
Sets the 'hidden' attribute to the following files
- %LOCALAPPDATA%low\ochyo.yby
Deletes itself.
Network activity
Connects to
- 'microsoft.com':80
- 'oc##.thawte.com':80
- 'oc##.#tartssl.com':80
TCP
HTTP GET requests
- http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt
- http://oc##.thawte.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQwF4prw9S7mCbCEHD%2Fyl6nWPkczAQUe1tFz6%2FOy3r9MZIaarbzRutXSFACEEeXTXhzpbyrDS%2BzcBkvzl4%3D
- http://oc##.#tartssl.com/sub/class2/code/ca/MEMwQTA%2FMD0wOzAJBgUrDgMCGgUABBQSOgrhRCSnWfKxoWTjWxhk8hga9AQU0E4PQJlsuEsZbzsouODjiAc0qrcCAhAV
UDP
- DNS ASK microsoft.com
- DNS ASK oc##.thawte.com
- DNS ASK oc##.#tartssl.com
- '21#.#3.89.38':28795
- '11#.#7.176.166':25602
- '69.#8.209.4':18185
- '18#.#1.34.83':15164
- '99.##.116.142':15916
- '19#.#79.153.248':15092
Miscellaneous
Searches for the following windows
- ClassName: 'OutlookExpressHiddenWindow' WindowName: ''
Creates and executes the following
- '%APPDATA%\feap\degyep.exe'
- '%WINDIR%\syswow64\cmd.exe' /c "%TEMP%\tmp6a2aa8a9.bat"' (with hidden window)
Executes the following
- '%ProgramFiles%\windows mail\winmail.exe' -Embedding
- '%WINDIR%\syswow64\cmd.exe' /c "%TEMP%\tmp6a2aa8a9.bat"
