W32.Kelvir.AZ

1. Attempts to end any services and processes that contain the following strings:
   
   
   • Ahnlab Task Scheduler
   • altiris client service
   • ANTIVIR
   • ATRACK
   • avast! antivirus
   • avast! iavs4 control service
   • AVCONSOL
   • AVG6 Service
   • AVG7 Alert Manager Server
   • AVG7 Update Service
   • AVP control center service
   • AVP.EXE
   • AVP32
   • AVSync Manager
   • AVSYNMGR
   • Background Intelligent Transfer Service
   • BlackICE
   • carbon copy access edition
   • CFINET
   • CFINET32
   • config loader
   • Detector de OfficeScanNT
   • directupdate engine
   • dllhost
   • dns
   • eTrust Antivirus Job Server
   • etrust antivirus job server
   • eTrust Antivirus Realtime Server
   • etrust antivirus realtime server
   • eTrust Antivirus RPC Server
   • etrust antivirus rpc server
   • Event Log
   • Eventask
   • FireBall
   • FireBaum
   • fix-it task manager
   • F-PROT95
   • F-STOPW
   • fxsvc
   • gear security
   • IAMAPP
   • ICMON
   • intel file transfer
   • intel pds
   • Internet Connection Firewall (ICF) / Internet Connection Sharing (ICS)
   • internet pr0tocol
   • InternetFirewallProc
   • IOMON98
   • IPSEC Policy Agent
   • iroff
   • Kaspersky
   • Kaspersky Antivirus
   • Kaspersky Anti-Virus
   • kaspersky auto protect service
   • Kaspersky Client
   • kav
   • KAV Moniter Service
   • kerio personal firewall
   • Kingsoft AntiVirus Service
   • LOCKDOWN2000
   • LUALL
   • LUCOMSERVER
   • MastDLL
   • MCAFEE
   • McAfee Agent
   • mcafee framework service
   • McAfee.com McShield
   • McAfee.com VirusScan Online Realtime Engine
   • McShield
   • mcshield
   • MonSvcNT
   • msclol2
   • msinit
   • MsInt
   • MsIntScan
   • NAV Alert
   • NAV Auto-Protect
   • NAVAPSVC
   • NAVAPW32
   • NAVLU32
   • NAVRUNR
   • NAVW32
   • NAVWNT
   • NISSERV
   • NISUM
   • NMAIN
   • NORTON
   • Norton Antivirus Auto Protect Service
   • Norton AntiVirus Auto Protect Service
   • Norton AntiVirus Client
   • Norton AntiVirus Corporate Edition
   • Norton AntiVirus Server
   • Norton Internet Security Accounts Manager
   • Norton Internet Security Proxy Service
   • Norton Internet Security Proxy Srvice
   • Norton Internet Security Service
   • Norton Internet Security service
   • Norton Unerase Protection
   • nvscv
   • officescannt listener
   • OfficeScanNT Monitor
   • officescannt realtime scan
   • outpost firewall service
   • P2P Networking
   • Panda Antivirus
   • pcanywhere host service
   • PC-cillin Personal Firewall
   • PCCIOMON
   • PCCMAIN
   • PCCWIN98
   • POP3TRAP
   • psexesvc
   • PVIEW95
   • Quick Heal Online Protection
   • RemoteAgent
   • remotely possible/32
   • RESCUE32
   • rising process communication center
   • Rising Process Communication Center
   • rising realtime monitor service
   • Rising Realtime Monitor Service
   • rundll
   • SAFEWEB
   • savroam
   • sclol8
   • ScriptBlocking Service
   • scvhost
   • secur2
   • Security Center
   • services32 service: msinit
   • servu
   • Serv-U
   • serv-u-ftp
   • smss
   • snake sockproxy service
   • Sophos Anti-Virus
   • Sophos Anti-Virus Network
   • Sygate Personal Firewall
   • Sygate Personal Firewall Pro
   • SyGateService
   • symantec antivirus
   • Symantec AntiVirus Client
   • symantec central quarantine
   • Symantec Event Manager
   • Symantec Proxy Service
   • symantec quarantine agent
   • symantec quarantine scanner
   • SYMPROXYSVC
   • syslock
   • System Event Notification
   • systemsecuritydll
   • task manager
   • Trend Micro Proxy Service
   • Trend NT Realtime Service
   • TrueVector Internet Monitor
   • V3MonNT
   • V3MonSvc
   • ViRobot Expert Monitoring
   • ViRobot Lite Monitoring
   • ViRobot Professional Monitoring
   • vnc server
   • VNC server
   • VSHWIN32
   • VSSTAT
   • WEBSCANX
   • WEBTRAP
   • win32sl
   • Windows Firewall
   • Windows Internet Connection Sharing(ICS)
   • WMDM PMSP Service
   • Zonealarm
   • ZoneAlarm
     
     
2. Modifies the value:
   
   "Start" = "4"
   
   in the registry subkeys:
   
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\[service names]
   
   so that [service names] is set to Disabled.
   
   Note: [service names] is a variable for services listed under the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services subkey. The worm attempts to disable any services that contain the strings listed in step one.
   
   
3. Sends the following message to all the MSN messenger contacts on the compromised computer:
   
   hey its you!
   [predetermined URL]=[email address]
   
   Notes:
   • [predetermined URL] is a variable for a URL on the pictures.templates.4friends.com domain.
   • [email address] is a variable for an email address specified by the worm.
   • The URL links to a copy of W32.Spybot.OFN.

Recommendations

Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

• Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
• Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
• Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
• Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
• Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
• Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
• If a threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
• Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services.
• Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
• Isolate compromised computers quickly to prevent threats from spreading further. Perform a forensic analysis and restore the computers using trusted media.
• Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
• If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.
• For further information on the terms used in this document, please refer to the Security Response glossary.