Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'Google Updater 1.0.1' = '%PROGRAMDATA%\Google Updater 1.0.1\5ek33omoo3oc.exe'
- [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Google Updater 1.0.1' = '"%PROGRAMDATA%\Google Updater 1.0.1\5ek33omoo3oc.exe"'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rstrui.exe] 'Debugger' = 'daowfu.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'Google Updater 1.0.1' = '"%PROGRAMDATA%\Google Updater 1.0.1\5ek33omoo3oc.exe"'
Creates or modifies the following files
- %APPDATA%\microsoft\windows\start menu\programs\startup\svclost.lnk
Sets the following service settings
- [<HKLM>\System\CurrentControlSet\Services\SSDPSRV] 'Start' = '00000002'
Malicious functions
To bypass firewall, removes or modifies the following registry keys
- [<HKLM>\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
Injects code into
the following system processes:
- %WINDIR%\syswow64\explorer.exe
- <SYSTEM32>\dwm.exe
- %WINDIR%\explorer.exe
the following user processes:
- svclost.exe
- iexplore.exe
- firefox.exe
Hooks functions
in browsers
- iexplore.exe process, dnsapi.dll module
- iexplore.exe process, wininet.dll module
- firefox.exe process, nss3.dll module
- firefox.exe process, dnsapi.dll module
Searches for windows to
detect analytical utilities:
- ClassName: '', WindowName: 'Registry Monitor - Sysinternals: www.sysinternals.com'
- ClassName: 'OLLYDBG', WindowName: ''
- ClassName: 'PROCMON_WINDOW_CLASS', WindowName: ''
- ClassName: 'TIdaWindow', WindowName: ''
Modifies settings of Windows Internet Explorer
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '2500' = '00000003'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '2500' = '00000003'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2500' = '00000003'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '2500' = '00000003'
Modifies file system
Creates the following files
- %TEMP%\aut1c5a.tmp
- %APPDATA%\taskhosti.exe
- %TEMP%\aut20df.tmp
- %APPDATA%\svclost.exe
- %TEMP%\aut337c.tmp
- %TEMP%\viujvod
Sets the 'hidden' attribute to the following files
- %PROGRAMDATA%\google updater 1.0.1\5ek33omoo3oc.exe
Deletes the following files
- %TEMP%\aut1c5a.tmp
- %TEMP%\aut20df.tmp
- %TEMP%\aut337c.tmp
- %TEMP%\viujvod
Moves the following files
- from %APPDATA%\taskhosti.exe to %PROGRAMDATA%\google updater 1.0.1\5ek33omoo3oc.exe
Network activity
Connects to
- '23.##.95.117':80
TCP
HTTP POST requests
- http://23.##.95.117/portal/logout.php?pa#####
- http://23.##.95.117/portal/logout.php?pi#####
UDP
- DNS ASK nu######oject4.duckdns.org
- DNS ASK update.microsoft.com
- DNS ASK 11#.##.#4.23.in-addr.arpa
Miscellaneous
Searches for the following windows
- ClassName: '' WindowName: 'GMER'
- ClassName: '' WindowName: 'Monitoring - API Monitor v2 32-bit'
Creates and executes the following
- '%APPDATA%\taskhosti.exe'
- '%APPDATA%\svclost.exe'
Executes the following
- '%WINDIR%\syswow64\explorer.exe'
