W32/Agobot-DAA

Please follow the instructions for removing worms.

Replace the Hosts file from a backup or edit it in Notepad to remove the changes that the worm has made.

You will also need to edit the following registry entries, if they are present. 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 entries:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\

and remove any reference to any file you deleted.

Close the registry editor.

W32/Agobot-DAA is an IRC backdoor and network worm.

W32/Agobot-DAA is capable of spreading to computers on the local network protected by weak passwords.

The Trojan runs continuously in the background providing backdoor access to the computer. W32/Agobot-DAA is an IRC backdoor and network worm.

W32/Agobot-DAA is capable of spreading to computers on the local network protected by weak passwords.

When first run, W32/Agobot-DAA copies itself to the Windows system folder as winhlpp32.exe and creates registry entries under the following to run itself each time a user logs on:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\

The Trojan runs continuously in the background providing backdoor access to the computer.

W32/Agobot-DAA attempts to terminate and disable various anti-virus and security related programs and modifies the HOSTS file located at <Windows system folder>\Drivers\etc\HOSTS, mapping certain anti-virus websites to the loopback address 127.0.0.1 in an attempt to prevent access to these sites. Typically the following mappings will be appended to the HOSTS file:

127.0.0.1 www.symantec.com
127.0.0.1 securityresponse.symantec.com
127.0.0.1 symantec.com
127.0.0.1 www.sophos.com
127.0.0.1 sophos.com
127.0.0.1 www.mcafee.com
127.0.0.1 mcafee.com
127.0.0.1 liveupdate.symantecliveupdate.com
127.0.0.1 www.viruslist.com
127.0.0.1 viruslist.com
127.0.0.1 viruslist.com
127.0.0.1 f-secure.com
127.0.0.1 www.f-secure.com
127.0.0.1 kaspersky.com
127.0.0.1 www.avp.com
127.0.0.1 www.kaspersky.com
127.0.0.1 avp.com
127.0.0.1 www.networkassociates.com
127.0.0.1 networkassociates.com
127.0.0.1 www.ca.com
127.0.0.1 ca.com
127.0.0.1 mast.mcafee.com
127.0.0.1 my-etrust.com
127.0.0.1 www.my-etrust.com
127.0.0.1 download.mcafee.com
127.0.0.1 dispatch.mcafee.com
127.0.0.1 secure.nai.com
127.0.0.1 nai.com
127.0.0.1 www.nai.com
127.0.0.1 update.symantec.com
127.0.0.1 updates.symantec.com
127.0.0.1 us.mcafee.com
127.0.0.1 liveupdate.symantec.com
127.0.0.1 customer.symantec.com
127.0.0.1 rads.mcafee.com
127.0.0.1 trendmicro.com
127.0.0.1 www.trendmicro.com

W32/Agobot-DAA will also hide all files with names that contain the string 'soun'.