high
Summary
Summary
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| Detected by | All Sophos products |
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Action
- Summary
- Action
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Please follow the instructions for removing Trojans.
Windows NT/2000/XP
In Windows NT/2000/XP you will also need to edit the following registry entry. The removal of this entry is optional in Windows 95/98/Me. Please read the warning about editing the registry.
At the taskbar, click Start|Run. Type 'Regedit' and press Return. The registry editor opens.
Before you edit the registry, you should make a backup. On the 'Registry' menu, click 'Export Registry File'. In the 'Export range' panel, click 'All', then save your registry as Backup.
Locate the HKEY_LOCAL_MACHINE entry:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
RVCHOST.EXE = %SYSTEM%\Rvchost.exe
and delete it if it exists.
Close the registry editor.
More Information
Troj/Delf-AC is a backdoor Trojan which allows a remote intruder to gain access and control over the computer.
When first run Troj/Delf-AC drops the files Eexplore.dll and Explorer.dll to the Windows System folder, copies itself to the System folder as Rvchost.exe and creates the registry entry:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
RVCHOST.EXE = %SYSTEM%\Rvchost.exe
so that Rvchost.exe is run automatically each time the computer is restarted.
Troj/Delf-AC may delete the files Mstask.exe and svchost.exe from the System folder.
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