From; Sophos Alert System: Name: W32/Rbot-XS Aliases: Backdoor.Win32.SdBot.lt Type: Win32 worm Date: 14 March 2005 A virus identity (IDE) file which provides protection is available now from the Sophos website, and will be incorporated into the May 2005 (3.93) release of Sophos Anti-Virus. Customers using EM Library, PureMessage or any of our Sophos small business solutions will be automatically protected at their next scheduled update. At the time of writing, Sophos has received a small number of reports of this worm from the wild. Information about W32/Rbot-XS can be found at: http://www.sophos.com/virusinfo/analyses/w32rbotxs.html W32/Rbot-XS is a worm with backdoor Trojan functionality. W32/Rbot-XS is capable of spreading to computers on the local network protected by weak passwords after receiving the appropriate backdoor command. W32/Rbot-XS will attempt to spread by exploiting the following vulnerabilities: DCOM (MS04-012) LSASS (MS04-011) Microsoft SQL servers with weak passwords. When first run, W32/Rbot-XS copies itself to the Windows system folder as TAY0X.EXE and runs this copy of the worm. The copy will then attempt to delete the original file. In order to run each time a user logs in, W32/Rbot-XS will set the following registry entries: HKLM\Software\Microsoft\Windows\CurrentVersion\Run\ aldefr ere service tay0x.exe HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices aldefr ere service tay0x.exe HKCU\Software\Microsoft\Windows\CurrentVersion\Run aldefr ere service tay0x.exe The worm runs continuously in the background providing backdoor access to the infected computer over IRC channels. W32/Rbot-XS will set the following registry entries in order to disable DCOM and close restrictions on IPC$ shares: HKLM\SOFTWARE\Microsoft\Ole EnableDCOM N HKLM\SYSTEM\CurrentControlSet\Control\Lsa restrictanonymous 1 W32/Rbot-XS is capable of altering the following registry entry to restrict anonymous enumeration of SAM accounts: HKLM\SYSTEM\CurrentControlSet\Control\Lsa\restrictanonymousSAM W32/Rbot-XS can add and delete network shares and users on the infected computer. This IDE file also includes detection for: W32/Rbot-XQ http://www.sophos.com/virusinfo/analyses/w32rbotxq.html Troj/Bancos-BO http://www.sophos.com/virusinfo/analyses/trojbancosbo.html Troj/Dloader-JE http://www.sophos.com/virusinfo/analyses/trojdloaderje.html TrojAgent-ZR http://www.sophos.com/virusinfo/analyses/trojagentzr.html W32/Agobot-AMO http://www.sophos.com/virusinfo/analyses/w32agobotamo.html Troj/Baglet-B http://www.sophos.com/virusinfo/analyses/trojbagletb.html Troj/Microj-C http://www.sophos.com/virusinfo/analyses/trojmicrojc.html Troj/Voken-A http://www.sophos.com/virusinfo/analyses/trojvokena.html Download the IDE file from: http://www.sophos.com/downloads/ide/rbotxs.ide Download all the IDE files available for the current version of Sophos Anti-Virus in a single compressed file. The file is available in two formats: Zip file: http://www.sophos.com/downloads/ide/ides.zip Self-extracting file: http://www.sophos.com/downloads/ide/ides.exe Read about how to use IDE files at http://www.sophos.com/downloads/ide/using.html *********** MIKE"S REPLY SEPARATOR *********** Mike ~ It is a good day if I learned something new. Editor MikesWhatsNews see a sample on my web page http://www3.telus.net/mikebike <mikeswhatsnews-request@xxxxxxxxxxxxx?Subject=subscribe> http://www3.telus.net/mikebike/worm_removal.htm See my Anti-Virus pages http://virusinfo.hackfix.org/index <virusinfo-request@xxxxxxxxxxxxx?Subject=subscribe> A Technical Support Alliance and OWTA Charter Member
