Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '12ce4e06a81e8d54fd01d9b762f1b1bb' = '"%TEMP%\system.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '12ce4e06a81e8d54fd01d9b762f1b1bb' = '"%TEMP%\system.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\system.exe' = '%TEMP%\system.exe:*:Enabled:system.exe'
Creates and executes the following:
- '%TEMP%\system.exe'
- '<LS_APPDATA>DtOKyrCCVT.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\system.exe" "system.exe" ENABLE
- '<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen <LS_APPDATA>YhnbfbeUTL.jpg
Modifies file system :
Creates the following files:
- %HOMEPATH%\Recent\Application DataYhnbfbeUTL.lnk
- %HOMEPATH%\Recent\Local Settings.lnk
- %TEMP%\system.exe
- <LS_APPDATA>DtOKyrCCVT.exe
- <LS_APPDATA>YhnbfbeUTL.jpg
Network activity:
Connects to:
- 'wi###.sytes.net':81
UDP:
- DNS ASK wi###.sytes.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: 'ShImgVw:CPreviewWnd' WindowName: '(null)'