W32.Spybot.AVEO

February 25, 2010 webmaster Worm, 0

W32.Spybot.AVEO is a detection for a worm that attempts to exploit various vulnerabilities in order to propagate itself. W32.Spybot.AVEO may also spread via unprotected network shared drives. To run itself, it will alter and create and entry on the Windows registry.

Type	Worm
Sub-Type	Downloader
Aliases
OS Affected	Windows
Detected By	Symantec

What are the Symptoms of W32.Spybot.AVEO Infection?

It will modify Windows Registry and add the following entries:

• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\”Windows Firewall Updater” = “windowsupdate.exe”
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices\”Windows Firewall Updater” = “windowsupdate.exe”
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Ole\”EnableRemoteConnect” = “N”
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\PCT1.0\Server\”Enabled” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters\”AutoShareWks” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters\”AutoShareServer” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\WINDOWS\system32\”windowsupdate.exe” = “C:\WINDOWS\system32\windowsupdate.exe:*:Enabled:Windows Firewall Updater”
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”AllowUnqualifiedQuery” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”PrioritizeRecordData” = “1″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”TCP1320Opts” = “3″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”KeepAliveTime” = “23280″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”BcastQueryTimeout” = “2EE”
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”BcastNameQueryCount” = “1″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”CacheTimeout” = “EA60″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”Size/Small/Medium/Large” = “3″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”LargeBufferSize” = “1000″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”SynAckProtect” = “2″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”PerformRouterDiscovery” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”EnablePMTUBHDetect” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”FastSendDatagramThreshold ” = “400″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”StandardAddressLength ” = “18″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”DefaultReceiveWindow ” = “4000″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”DefaultSendWindow” = “4000″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”BufferMultiplier” = “200″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”PriorityBoost” = “2″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”IrpStackSize” = “4″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”IgnorePushBitOnReceives” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”DisableAddressSharing” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”AllowUserRawAccess” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”DisableRawSecurity” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”DynamicBacklogGrowthDelta” = “32″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”FastCopyReceiveThreshold” = “400″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”LargeBufferListDepth” = “A”
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”MaxActiveTransmitFileCount” = “2″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”MaxFastTransmit” = “40″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”OverheadChargeGranularity” = “1″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”SmallBufferListDepth” = “20″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”SmallerBufferSize” = “80″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”TransmitWorker” = “20″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”DNSQueryTimeouts” = “31 00 00 00 00 00 00 00 32 00 00 00 00 00 00 00 32 00 00 00 00 00 00 00 34 00 00 00 00 00 00 00 38 00 00 00 00 00 00 00 30 00 00 00 00 00 00 00 00 00 00 00″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”DefaultRegistrationTTL” = “14″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”DisableReplaceAddressesInConflicts” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”DisableReverseAddressRegistrations” = “1″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”UpdateSecurityLevel ” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”DisjointNameSpace” = “1″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”QueryIpMatching” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”NoNameReleaseOnDemand” = “1″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”EnableDeadGWDetect” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”EnableFastRouteLookup” = “1″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”MaxFreeTcbs” = “7D0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”MaxHashTableSize” = “800″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”SackOpts” = “1″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”Tcp1323Opts” = “3″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”TcpMaxDupAcks” = “1″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”TcpRecvSegmentSize” = “585″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”TcpSendSegmentSize” = “585″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”TcpWindowSize” = “7D200″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”DefaultTTL” = “30″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”TcpMaxHalfOpen” = “4B”
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”TcpMaxHalfOpenRetried” = “50″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”TcpTimedWaitDelay” = “0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”MaxNormLookupMemory” = “30D40″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”FFPControlFlags” = “1″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”FFPFastForwardingCacheSize” = “30D40″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”MaxForwardBufferMemory” = “19DF7″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”MaxFreeTWTcbs” = “7D0″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”GlobalMaxTcpWindowSize” = “7D200″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”EnablePMTUDiscovery” = “1″
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\”ForwardBufferMemory” = “19DF7″
• HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\”MaxConnectionsPer1_0Server” = “50″
• HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\”MaxConnectionsPerServer” = “50″
• HKEY_CURRENT_USER\Software\Microsoft\OLE\”Windows Firewall Updater” = “windowsupdate.exe”

The threat will drop the following malicious file:

• %System%\windowsupdate.exe

How to Remove W32.Spybot.AVEO Manually

1. Restart your computer in SafeMode
- After Power-On the computer, just before Windows start, press F8
- From the selections, Select SafeMode

2. Remove Registry entries that the threat added. You MUST BACKUP YOUR REGISTRY FIRST.
- Click Start > Run
- Type in the field, regedit
- Navigate and look for the registry entries mentioned above and delete if necessary

3. Delete malicious files that the threat added:
- Base on the given location above, browse and delete the file
- If no location is given, click Start>Search> and search for the files.
- If cannot be deleted, press Ctrl+Alt+Del to access Task Manager, see if the file is running in the process. If it is, select the file and click End Process. Perform file delete again.

4. Scan computer with Antivirus Program
- Update antivirus program
- Scan computer and delete all detected threats.

Antivirus Live 2010 Control Manager