W32/Agobot-ZF is a backdoor Trojan and worm which spreads to computers
protected by weak passwors.
When first run, W32/Agobot-ZF moves itself to the Windows system folder as
winsvc32.exe and creates the following registry entries to run itself on
startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
Windows Generic Services = winsvc32.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices\
Windows Generic Services = winsvc32.exe
Each time W32/Agobot-ZF is run it attempts to connect to a remote IRC server
and join a specific channel. It then runs continuously in the background
allowing a remote intruder to access and control the computer via IRC channels.
W32/Agobot-ZF attempts to terminate and disable various anti-virus and
security-related programs and modifies the HOSTS file located at
%WINDOWS%\System32\Drivers\etc\HOSTS. Selected anti-virus websites are mapped 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