W32.Beagle.AB@mm

Risk Level 2: Low

Discovered:
July 15, 2004
Updated:
February 13, 2007 12:25:18 PM
Also Known As:
W32/Bagle.af@MM [McAfee], WORM_BAGLE.AF [Trend Micro], Win32.Bagle.AB [Computer Assoc, W32/Bagle-AF [Sophos], I-Worm.Bagle.af [Kaspersky]
Type:
Worm
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

SUMMARY


W32.Beagle.AB@mm is a mass-mailing worm that uses its own SMTP engine to spread through email and opens a backdoor on TCP port 1080.

The subject line, body, and attachment name of the email vary. The attachment will have a .com, .cpl, .exe, .scr, or .zip file extension.

The worm is packed with UPX.

Notes:
  • Virus definitions dated prior to July 15, 2004 may detect this threat as Bloodhound.Packed.
  • Virus definitions greater than version 60715av (extended version July 15, 2004, rev. 48) are required to detect this threat as W32.Beagle.AB@mm.


Antivirus Protection Dates

  • Initial Rapid Release version July 15, 2004
  • Latest Rapid Release version July 15, 2004
  • Initial Daily Certified version July 15, 2004
  • Latest Daily Certified version July 23, 2007 revision 035
  • Initial Weekly Certified release date July 15, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

  • Wild Level: Medium
  • Number of Infections: 50 - 999
  • Number of Sites: More than 10
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Moderate

Damage

  • Damage Level: Medium

Distribution

  • Distribution Level: High

TECHNICAL DETAILS


When W32.Beagle.AB@mm runs, it performs the following actions:
  1. Creates seven mutexes with the following names, which prevent some variants of W32.Netsky@mm from running:
    • MuXxXxTENYKSDesignedAsTheFollowerOfSkynet-D
    • 'D'r'o'p'p'e'd'S'k'y'N'e't'
    • _-oOaxX|-+S+-+k+-+y+-+N+-+e+-+t+-|XxKOo-_
    • [SkyNet.cz]SystemsMutex
    • AdmSkynetJklS003
    • ____--->>>>U<<<<--____
    • _-oO]xX|-S-k-y-N-e-t-|Xx[Oo-_

  2. Deletes any values that contain the following strings:

    "My AV"
    "Zone Labs Client Ex"
    "9XHtProtect"
    "Antivirus"
    "Special Firewall Service"
    "service"
    "Tiny AV"
    "ICQNet"
    "HtProtect"
    "NetDy"
    "Jammer2nd"
    "FirewallSvr"
    "MsInfo"
    "SysMonXP"
    "EasyAV"
    "PandaAVEngine"
    "Norton Antivirus AV"
    "KasperskyAVEng"
    "SkynetsRevenge"
    "ICQ Net"

    from the keys:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  3. Creates the following files:
    • %System%\sysxp.exe
    • %System%\sysxp.exeopen (A copy of the worm with randomly appended data.)

      Note: %System% is a variable. The worm locates the System folder and copies itself to that location. By default, this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

  4. Drops the file, %System%\sysxp.exeopenopen, which will be a copy of the worm, which is a .zip file, or .cpl file:
    • If the file is a .zip file, it will contain two randomly named files. One will be a .exe file and the other will be a text file with a .sys, .dat, .idx, .vxd, .vid, or .dll extension.
    • If the file is a .cpl file and is executed, it will drop a file named cplstub.exe into the %Windir% folder.

  5. Drops the file, %System%\sysxp.exeopenopenopen. If the file, Gdiplus.dll, is present on the computer, this file will be a .jpg or .gif file. Otherwise, it will be a .bmp file.

  6. Drops the file, %System%\sysxp.exeopenopenopenopen, which is not viral by itself.

  7. Adds the value:

    "key" = "%System%\sysxp.exe"

    to the registry key:

    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run

    so that the worm runs when Windows starts.

  8. If the system date is after May 5, 2006, the worm will exit from memory and delete its registry value and the key:

    HKEY_CURRENT_USER\SOFTWARE\base_path

  9. Opens a backdoor on TCP port 1080, which allows the infected computer to be used as an email relay.

  10. Contacts a .php script at a number of predetermined domains. Refer to "Domains" near the end of the "Technical Details" section for a full list of the domains.

  11. Ends processes associated with various software. Refer to "Processes" at the end of the "Technical Details" section for a full list of process names.

  12. Attempts to create copies of itself in any folder that contains the characters "shar." The files will have the following file names:
    • ACDSee 9.exe
    • Adobe Photoshop 9 full.exe
    • Ahead Nero 7.exe
    • Kaspersky Antivirus 5.0
    • KAV 5.0
    • Matrix 3 Revolution English Subtitles.exe
    • Microsoft Office 2003 Crack, Working!.exe
    • Microsoft Office XP working Crack, Keygen.exe
    • Microsoft Windows XP, WinXP Crack, working Keygen.exe
    • Opera 8 New!.exe
    • Porno pics arhive, xxx.exe
    • Porno Screensaver.scr
    • Porno, sex, oral, anal cool, awesome!!.exe
    • Serials.txt.exe
    • WinAmp 5 Pro Keygen Crack Update.exe
    • WinAmp 6 New!.exe
    • Windown Longhorn Beta Leak.exe
    • Windows Sourcecode update.doc.exe
    • XXX hardcore images.exe

  13. Searches for email addresses in the files that have the following extensions:
    • .adb
    • .asp
    • .cfg
    • .cgi
    • .dbx
    • .dhtm
    • .eml
    • .htm
    • .jsp
    • .mbx
    • .mdx
    • .mht
    • .mmf
    • .msg
    • .nch
    • .ods
    • .oft
    • .php
    • .pl
    • .sht
    • .shtm
    • .stm
    • .tbb
    • .txt
    • .uin
    • .wab
    • .wsh
    • .xls
    • .xml

  14. Uses its own SMTP engine to send email messages to any addresses found. The email may have the following characteristics:

    From: <spoofed>

    Subject: (One of the following)
    • Changes..
    • Encrypted document
    • Fax Message
    • Forum notify
    • Incoming message
    • Notification
    • Protected message
    • Re: Document
    • Re: Hello
    • Re: Hi
    • Re: Incoming Message
    • RE: Incoming Msg
    • RE: Message Notify
    • Re: Msg reply
    • RE: Protected message
    • RE: Text message
    • Re: Thank you!
    • Re: Thanks :)
    • Re: Yahoo!
    • Site changes
    • Update


      Body:
      If the attachment is a .zip file, then the body will contain one of the following messages:
    • For security reasons attached file is password protected. The password is
    • For security purposes the attached file is password protected. Password --
    • Note: Use password
    • Attached file is protected with the password for security reasons. Password is
    • In order to read the attach you have to use the following password:
    • Archive password:
    • Password
    • Password:

      followed by a copy of sysxp.exeopenopenopen, which is an image containing the password for the .zip file.


      If the attachment is not a .zip file, the body will be one of the following:
    • Read the attach.
    • Your file is attached.
    • More info is in attach
    • See attach.
    • Please, have a look at the attached file.
    • Your document is attached.
    • Please, read the document.
    • Attach tells everything.
    • Attached file tells everything.
    • Check attached file for details.
    • Check attached file.
    • Pay attention at the attach.
    • See the attached file for details.
    • Message is in attach
    • Here is the file.


      Attachment: (One of the following)
    • Information
    • Details
    • text_document
    • Updates
    • Readme
    • Document
    • Info
    • MoreInfo
    • Message


      Attachment extension: (One of the following)
    • .exe
    • .scr
    • .com
    • .cpl
    • .zip


Domains
W32.Beagle.AB@mm attempts to contact the following domains:
  • abtacha.wirebrain.de
  • begros.de
  • deepiceman.de
  • dfk-crew.clanintern.de
  • die-cliquee.de
  • edwinf.surfplanet.de
  • knecht.cs.uni-magdeburg.de
  • login.rz.fh-augsburg.de
  • niematec.de
  • obechmann.de
  • pe-data.de
  • people-ftp.freenet.de
  • people-ftp.freenet.de
  • people-ftp.freenet.de
  • ronnyackermann.de
  • sgi1.rz.rwth-aachen.de
  • symbit.de
  • tripod.de
  • web154.essen082.server4free.de
  • web216.berlin240.server4free.de
  • www.aachen.de
  • www.abacho.de
  • www.anwaltverein.de/
  • www.aquarius.geomar.de
  • www.astronomie.de
  • www.atlantis-show.de
  • www.atlas-hannover.de
  • www.awi-bremerhaven.de
  • www.baden-wuerttemberg.de
  • www.bayerninfo.de
  • www.beck.de
  • www.berlinonline.de
  • www.bessy.de
  • www.bitburger.de
  • www.blk-bonn.de/
  • www.bmgs.bund.de
  • www.brigitte.de
  • www.bundesliga.de
  • www.calistyler.de
  • www.citypopulation.de
  • www.dar-fantasy.de
  • www.dasding.de
  • www.degruyter.de
  • www.destatis.de
  • www.dortmund.de
  • www.duden.de
  • www.dwelle.de
  • www.empire-show.de
  • www.eumetsat.de
  • www.europarl.de
  • www.expo2000.de
  • www.fernuni-hagen.de
  • www.finanznachrichten.de
  • www.firstgate.de
  • www.frankfurt-airport.de
  • www.frankfurter-buchmesse.de
  • www.freiburg.de
  • www.gantke-net.de
  • www.gelbeseiten.de
  • www.gtz.de
  • www.gutenberg2000.de
  • www.hannobunz.de
  • www.heidelberg.de
  • www.helmholtz.de
  • www.hosteurope.de
  • www.h-p-i.de
  • www.immobilienscout24.de
  • www.jugendherberge.de
  • www.kabel1.de
  • www.kalenderblatt.de
  • www.karlsruhe.de
  • www.king-alp.de
  • www.king-alp.de
  • www.klug-suchen.de
  • www.kompetenznetze.de
  • www.kompetenzz.de
  • www.krebsinformation.de
  • www.lords-of-havoc.de
  • www.lufthansa.de
  • www.lupo18t.de
  • www.mathguide.de
  • www.math-net.de
  • www.mdirk.de
  • www.medicine-worldwide.de
  • www.meinestadt.de
  • www.messe-duesseldorf.de
  • www.messe-muenchen.de
  • www.mohr.de
  • www.monster.de
  • www.munich-airport.de
  • www.mupad.de
  • www.murczak.de
  • www.murczak.de
  • www.niedersachsen.de
  • www.nuernbergmesse.de
  • www.onlinereviewguide.com
  • www.pcwelt.de
  • www.photokina.de
  • www.rapz-records.de
  • www.regtp.de
  • www.renewables2004.de
  • www.ruhr-uni-bochum.de
  • www.saarbruecken.de
  • www.saarland.de
  • www.schaubuehne.de
  • www.schulen-ans-netz.de
  • www.slowfood.de
  • www.staedtetag.de
  • www.stellenmarkt.de
  • www.stepstone.de
  • www.stifterverband.de
  • www.stricker-doerpen.de
  • www.studentenwerke.de
  • www.stufenlos-regelbar.de
  • www.stuttgart.de
  • www.stuttgarter-zeitung.de
  • www.superstar-nord.de
  • www.sysserver1.de
  • www.szakos.de
  • www.szakos.de
  • www.testdaf.de
  • www.tu-darmstadt.de
  • www.tu-dresden.de
  • www.tu-muenchen.de
  • www.umweltbundesamt.de
  • www.uni-bremen.de
  • www.unibw-muenchen.de
  • www.uni-duesseldorf.de
  • www.uni-duisburg-essen.de
  • www.uni-frankfurt.de
  • www.uni-jena.de
  • www.uni-mannheim.de
  • www.uni-marburg.de
  • www.uni-osnabrueck.de
  • www.uni-tuebingen.de
  • www.urlaubstage.de
  • www.vwschubert.de
  • www.webhits.de
  • www.wiley-vch.de
  • www.wissenschaft-online.de
  • zeus05.de
  • zille.cs.uni-magdeburg.de

Processes
W32.Beagle.AB@mm attempts to terminate the following processes:
  • AGENTSVR.EXE
  • ANTI-TROJAN.EXE
  • ANTI-TROJAN.EXE
  • ANTIVIRUS.EXE
  • ANTS.EXE
  • APIMONITOR.EXE
  • APLICA32.EXE
  • APVXDWIN.EXE
  • ATCON.EXE
  • ATGUARD.EXE
  • ATRO55EN.EXE
  • ATUPDATER.EXE
  • ATWATCH.EXE
  • AUPDATE.EXE
  • AUTODOWN.EXE
  • AUTOTRACE.EXE
  • AUTOUPDATE.EXE
  • AVCONSOL.EXE
  • AVGSERV9.EXE
  • AVLTMAIN.EXE
  • AVprotect9x.exe
  • AVPUPD.EXE
  • AVSYNMGR.EXE
  • AVWUPD32.EXE
  • AVXQUAR.EXE
  • BD_PROFESSIONAL.EXE
  • BIDEF.EXE
  • BIDSERVER.EXE
  • BIPCP.EXE
  • BIPCPEVALSETUP.EXE
  • BISP.EXE
  • BLACKD.EXE
  • BLACKICE.EXE
  • BOOTWARN.EXE
  • BORG2.EXE
  • BS120.EXE
  • CDP.EXE
  • CFGWIZ.EXE
  • CFGWIZ.EXE
  • CFIADMIN.EXE
  • CFIADMIN.EXE
  • CFIAUDIT.EXE
  • CFIAUDIT.EXE
  • CFIAUDIT.EXE
  • CFINET.EXE
  • CFINET.EXE
  • CFINET32.EXE
  • CFINET32.EXE
  • CLEAN.EXE
  • CLEAN.EXE
  • CLEANER.EXE
  • CLEANER.EXE
  • CLEANER3.EXE
  • CLEANPC.EXE
  • CLEANPC.EXE
  • CMGRDIAN.EXE
  • CMGRDIAN.EXE
  • CMON016.EXE
  • CMON016.EXE
  • CPD.EXE
  • CPF9X206.EXE
  • CPFNT206.EXE
  • CV.EXE
  • CWNB181.EXE
  • CWNTDWMO.EXE
  • DEFWATCH.EXE
  • DEPUTY.EXE
  • DPF.EXE
  • DPFSETUP.EXE
  • DRWATSON.EXE
  • DRWEBUPW.EXE
  • ENT.EXE
  • ESCANH95.EXE
  • ESCANHNT.EXE
  • ESCANV95.EXE
  • EXANTIVIRUS-CNET.EXE
  • FAST.EXE
  • FIREWALL.EXE
  • FLOWPROTECTOR.EXE
  • FP-WIN_TRIAL.EXE
  • FRW.EXE
  • FSAV.EXE
  • FSAV530STBYB.EXE
  • FSAV530WTBYB.EXE
  • FSAV95.EXE
  • GBMENU.EXE
  • GBPOLL.EXE
  • GUARD.EXE
  • GUARDDOG.EXE
  • HACKTRACERSETUP.EXE
  • HTLOG.EXE
  • HWPE.EXE
  • IAMAPP.EXE
  • IAMAPP.EXE
  • IAMSERV.EXE
  • ICLOAD95.EXE
  • ICLOADNT.EXE
  • ICMON.EXE
  • ICSSUPPNT.EXE
  • ICSUPP95.EXE
  • ICSUPP95.EXE
  • ICSUPPNT.EXE
  • IFW2000.EXE
  • IPARMOR.EXE
  • IRIS.EXE
  • JAMMER.EXE
  • KAVLITE40ENG.EXE
  • KAVPERS40ENG.EXE
  • KERIO-PF-213-EN-WIN.EXE
  • KERIO-WRL-421-EN-WIN.EXE
  • KERIO-WRP-421-EN-WIN.EXE
  • KILLPROCESSSETUP161.EXE
  • LDPRO.EXE
  • LOCALNET.EXE
  • LOCKDOWN.EXE
  • LOCKDOWN2000.EXE
  • LSETUP.EXE
  • LUALL.EXE
  • LUCOMSERVER.EXE
  • LUINIT.EXE
  • MCAGENT.EXE
  • MCUPDATE.EXE
  • MCUPDATE.EXE
  • MFW2EN.EXE
  • MFWENG3.02D30.EXE
  • MGUI.EXE
  • MINILOG.EXE
  • MOOLIVE.EXE
  • MRFLUX.EXE
  • MSCONFIG.EXE
  • MSINFO32.EXE
  • MSSMMC32.EXE
  • MU0311AD.EXE
  • NAV80TRY.EXE
  • NAVAPW32.EXE
  • NAVDX.EXE
  • NAVSTUB.EXE
  • NAVW32.EXE
  • NC2000.EXE
  • NCINST4.EXE
  • NDD32.EXE
  • NEOMONITOR.EXE
  • NETARMOR.EXE
  • NETINFO.EXE
  • NETMON.EXE
  • NETSCANPRO.EXE
  • NETSPYHUNTER-1.2.EXE
  • NETSTAT.EXE
  • NISSERV.EXE
  • NISUM.EXE
  • NMAIN.EXE
  • NORTON_INTERNET_SECU_3.0_407.EXE
  • NPF40_TW_98_NT_ME_2K.EXE
  • NPFMESSENGER.EXE
  • NPROTECT.EXE
  • NSCHED32.EXE
  • NTVDM.EXE
  • NUPGRADE.EXE
  • NVARCH16.EXE
  • NWINST4.EXE
  • NWTOOL16.EXE
  • OSTRONET.EXE
  • OUTPOST.EXE
  • OUTPOSTINSTALL.EXE
  • OUTPOSTPROINSTALL.EXE
  • PADMIN.EXE
  • PANIXK.EXE
  • PAVPROXY.EXE
  • PCC2002S902.EXE
  • PCC2K_76_1436.EXE
  • PCCIOMON.EXE
  • PCDSETUP.EXE
  • PCFWALLICON.EXE
  • PCFWALLICON.EXE
  • PCIP10117_0.EXE
  • PDSETUP.EXE
  • PERISCOPE.EXE
  • PERSFW.EXE
  • PF2.EXE
  • PFWADMIN.EXE
  • PINGSCAN.EXE
  • PLATIN.EXE
  • POPROXY.EXE
  • POPSCAN.EXE
  • PORTDETECTIVE.EXE
  • PPINUPDT.EXE
  • PPTBC.EXE
  • PPVSTOP.EXE
  • PROCEXPLORERV1.0.EXE
  • PROPORT.EXE
  • PROTECTX.EXE
  • PSPF.EXE
  • PURGE.EXE
  • PVIEW95.EXE
  • QCONSOLE.EXE
  • QSERVER.EXE
  • RAV8WIN32ENG.EXE
  • REGEDIT.EXE
  • REGEDT32.EXE
  • RESCUE.EXE
  • RESCUE32.EXE
  • RRGUARD.EXE
  • RSHELL.EXE
  • RTVSCN95.EXE
  • RULAUNCH.EXE
  • SAFEWEB.EXE
  • SBSERV.EXE
  • SD.EXE
  • SETUP_FLOWPROTECTOR_US.EXE
  • SETUPVAMEEVAL.EXE
  • SFC.EXE
  • SGSSFW32.EXE
  • SH.EXE
  • SHELLSPYINSTALL.EXE
  • SHN.EXE
  • SMC.EXE
  • SOFI.EXE
  • SPF.EXE
  • SPHINX.EXE
  • SPYXX.EXE
  • SS3EDIT.EXE
  • ST2.EXE
  • SUPFTRL.EXE
  • SUPPORTER5.EXE
  • SYMPROXYSVC.EXE
  • SYSEDIT.EXE
  • TASKMON.EXE
  • TAUMON.EXE
  • TAUSCAN.EXE
  • TC.EXE
  • TCA.EXE
  • TCM.EXE
  • TDS2-98.EXE
  • TDS2-NT.EXE
  • TDS-3.EXE
  • TFAK5.EXE
  • TGBOB.EXE
  • TITANIN.EXE
  • TITANINXP.EXE
  • TRACERT.EXE
  • TRJSCAN.EXE
  • TRJSETUP.EXE
  • TROJANTRAP3.EXE
  • UNDOBOOT.EXE
  • UPDATE.EXE
  • VBCMSERV.EXE
  • VBCONS.EXE
  • VBUST.EXE
  • VBWIN9X.EXE
  • VBWINNTW.EXE
  • VCSETUP.EXE
  • VFSETUP.EXE
  • VIRUSMDPERSONALFIREWALL.EXE
  • VNLAN300.EXE
  • VNPC3000.EXE
  • VPC42.EXE
  • VPFW30S.EXE
  • VPTRAY.EXE
  • VSCENU6.02D30.EXE
  • VSECOMR.EXE
  • VSHWIN32.EXE
  • VSISETUP.EXE
  • VSMAIN.EXE
  • VSMON.EXE
  • VSSTAT.EXE
  • VSWIN9XE.EXE
  • VSWINNTSE.EXE
  • VSWINPERSE.EXE
  • W32DSM89.EXE
  • W9X.EXE
  • WATCHDOG.EXE
  • WEBSCANX.EXE
  • WGFE95.EXE
  • WHOSWATCHINGME.EXE
  • WHOSWATCHINGME.EXE
  • WINRECON.EXE
  • WNT.EXE
  • WRADMIN.EXE
  • WRCTRL.EXE
  • WSBGATE.EXE
  • WYVERNWORKSFIREWALL.EXE
  • XPF202EN.EXE
  • ZAPRO.EXE
  • ZAPSETUP3001.EXE
  • ZATUTOR.EXE
  • ZAUINST.EXE
  • ZONALM2601.EXE

Symantec Gateway Security 5400 Series and Symantec Gateway Security v1.0
  • Antivirus component: An update for the Symantec Gateway Security AntiVirus engine to protect against the W32.Beagle.AB@mm worm is now available. We advise Symantec Gateway Security 5000 Series users to run LiveUpdate.
  • IDS/IPS component: An update for the Symantec Gateway Security 5000 Series IDS/IPS engine is not expected.
  • Full application inspection firewall component: By default, Symantec's full application inspection firewall technology protects against the W32.Beagle.AB@mm worm by blocking attackers from accessing the TCP/1080 backdoor port on infected systems. We urge administrators to verify that their security policies have not been modified to allow TCP/1080 inbound.

    When configured through the Policy Wizard, the SMTP rule created on the security gateway will block infected systems from directly sending email to the Internet.

Symantec Enterprise Firewall 8.0
By default, Symantec's full application inspection firewall technology protects against the W32.Beagle.AB@mm worm by blocking attackers from accessing the TCP/1080 backdoor port on infected systems. We urge administrators to verify that their security policies have not been modified to allow TCP/1080 inbound.

When configured through the Policy Wizard, the SMTP rule created on the security gateway will block infected systems from directly sending email to the Internet.

Symantec Enterprise Firewall 7.0.x and Symantec VelociRaptor 1.5
By default, Symantec's full application inspection firewall technology protects against the W32.Beagle.AB@mm worm by blocking attackers from accessing the TCP/1080 backdoor port on infected systems. We urge administrators to verify that their security policies have not been modified to allow TCP/1080 inbound.

When configured through the SMTP Wizard using the default settings, the SMTP rule created on the security gateway will block infected systems from directly sending email to the Internet.

Symantec Clientless VPN Gateway
This threat does not affect Symantec Clientless VPN Gateway v5.0. To reduce the risk of further propagation, you should also include a rule that only allows mail access from authenticated remote users to your internal mail server.

Symantec Gateway Security 300 Appliances
By default, Symantec's stateful inspection firewall technology prevents an attacker from accessing the TCP/1080 backdoor port on infected systems. We urge administrators to verify that their security policy has not been modified to allow TCP/1080 inbound and to use the AVpe feature of the SGS 300 series to make sure that all their antivirus clients are up-to-date with their virus definitions.

Symantec Firewall/VPN 100/200 Appliances
By default, Symantec's stateful inspection firewall technology prevents an attacker from accessing the TCP/1080 backdoor port on infected systems. We urge administrators to verify that their security policy has not been modified to allow TCP/1080 inbound.

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.

REMOVAL


Removal using the W32.Beagle@mm Removal Tool
Symantec Security Response has developed a removal tool to clean the infections of W32.Beagle.AB@mm. Use this removal tool first, as it is the easiest way to remove this threat.
Manual Removal
The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.
  1. Disable System Restore (Windows Me/XP).
  2. Update the virus definitions.
  3. Restart the computer in Safe mode or VGA mode.
  4. Run a full system scan and delete all the files detected as W32.Beagle.AB@mm.
  5. Delete the value that was added to the registry.

For specific details on each of these steps, read the following instructions.

1. To disable System Restore (Windows Me/XP)
If you are running Windows Me or Windows XP, we recommend that you temporarily turn off System Restore. Windows Me/XP uses this feature, which is enabled by default, to restore the files on your computer in case they become damaged. If a virus, worm, or Trojan infects a computer, System Restore may back up the virus, worm, or Trojan on the computer.

Windows prevents outside programs, including antivirus programs, from modifying System Restore. Therefore, antivirus programs or tools cannot remove threats in the System Restore folder. As a result, System Restore has the potential of restoring an infected file on your computer, even after you have cleaned the infected files from all the other locations.

Also, a virus scan may detect a threat in the System Restore folder even though you have removed the threat.

For instructions on how to turn off System Restore, read your Windows documentation, or one of the following articles:

Note:
When you are completely finished with the removal procedure and are satisfied that the threat has been removed, re-enable System Restore by following the instructions in the aforementioned documents.


For additional information, and an alternative to disabling Windows Me System Restore, see the Microsoft Knowledge Base article, "Antivirus Tools Cannot Clean Infected Files in the _Restore Folder," Article ID: Q263455.

2. To update the virus definitions
Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions:
  • Running LiveUpdate, which is the easiest way to obtain virus definitions: These virus definitions are posted to the LiveUpdate servers once each week (usually on Wednesdays), unless there is a major virus outbreak. To determine whether definitions for this threat are available by LiveUpdate, refer to the Virus Definitions (LiveUpdate).
  • Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted on U.S. business days (Monday through Friday). You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to the Virus Definitions (Intelligent Updater).

    The Intelligent Updater virus definitions are available: Read "How to update virus definition files using the Intelligent Updater" for detailed instructions.

3. To restart the computer in Safe mode or VGA mode

Shut down the computer and turn off the power. Wait for at least 30 seconds, and then restart the computer in Safe mode or VGA mode.
  • For Windows 95, 98, Me, 2000, or XP users, restart the computer in Safe mode. For instructions, read the document, "How to start the computer in Safe Mode."
  • For Windows NT 4 users, restart the computer in VGA mode.

4. To scan for and delete the infected files
  1. Start your Symantec antivirus program and make sure that it is configured to scan all the files.
  2. Run a full system scan.
  3. If any files are detected as W32.Beagle.AB@mm, click Delete.
  4. Navigate to the %System% folder and delete sysxp.exeopenopenopen and sysxp.exeopenopenopenopen.


    Note:
    If your Symantec antivirus product reports that it cannot delete an infected file, Windows may be using the file. To fix this, run the scan in Safe mode. For instructions, read the document, "How to start the computer in Safe Mode." Once you have restarted in Safe mode, run the scan again.

    (After the files are deleted, you can leave the computer in Safe mode and proceed with section 4. When that is done, restart the computer in Normal mode.)

5. To delete the value from the registry

WARNING:
Symantec strongly recommends that you back up the registry before making any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified keys only. Read the document, "How to make a backup of the Windows registry," for instructions.
  1. Click Start > Run.
  2. Type regedit

    Then click OK.

  3. Navigate to the key:

    HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

  4. In the right pane, delete the value:

    "key" = "%System%\sysxp.exe"

  5. Exit the Registry Editor.