Win32.HLLW.Autoruner2.826
Added to the Dr.Web virus database:
2013-12-29
Virus description added:
2013-12-30
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'e101a39ab5de59589562aa0ff3295ba5' = '"%TEMP%\csrss.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'e101a39ab5de59589562aa0ff3295ba5' = '"%TEMP%\csrss.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\e101a39ab5de59589562aa0ff3295ba5.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\csrss.exe' = '%TEMP%\csrss.exe:*:Enabled:csrss.exe'
Creates and executes the following:
- '%TEMP%\csrss.exe'
- '<LS_APPDATA>JiZltNAHpe.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\csrss.exe" "csrss.exe" ENABLE
- '<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen <LS_APPDATA>izQGCrdXid..jpg
Modifies file system :
Creates the following files:
- %HOMEPATH%\Recent\Application DataizQGCrdXid..lnk
- %HOMEPATH%\Recent\Local Settings.lnk
- %TEMP%\csrss.exe
- <LS_APPDATA>JiZltNAHpe.exe
- <LS_APPDATA>izQGCrdXid..jpg
Network activity:
Connects to:
- 'th####r4.zapto.org':1177
UDP:
- DNS ASK th####r4.zapto.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: 'ShImgVw:CPreviewWnd' WindowName: '(null)'
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