Discovered: November 21, 2003
Updated: February 13, 2007 12:14:22 PM
Also Known As: W32.HLLW.Gaobot.gen
Type: Worm
Systems Affected: Windows 2000, Windows NT, Windows Server 2003, Windows XP
When W32.HLLW.Gaobot.DJ is executed, it performs the following actions:
- Copies itself as %System%\cart322.exe.
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).
- Adds the value:
"ConfiggLoader"="cart322.exe"
to the registry keys:
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
RunServices
so that the worm runs when you start Windows.
- Creates the registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\a3
and adds the value:
"ConfiggLoader" = "%System%\cart322.exe" -service
so that the worm starts as a service when Windows starts.
- Connects to a predefined IRC server, using its own IRC client, and then listens for commands to do any of the following:
- Download and execute files
- Steal system information
- Send the worm to other IRC users
- Add new accounts
- Perform Denial of Service (DoS) attacks
- Remotely schedules a task to run the worm on a newly infected computer.
- Creates a random IP address and performs Distributed Denial of Service (DDoS) attack against it.
- Acts as a proxy server to direct attacks against another machine.
- Sends data to TCP port 135, which exploits the DCOM RPC vulnerability, described in Microsoft Security Bulletin MS03-026.
- Probes the following shares:
- admin$
- c$
- d$
- e$
- print$
using the following user names and passwords, as well as any user names found using NetUserEnum():
User names:
- Administrador
- Administrat\xF6r
- Administrateur
- Administrator
- Convidado
- Coordinatore
- Default
- Dell
- Gast
- Guest
- Inviter
- OEM
- OWNER
- Ospite
- Owner
- Standard
- Test
- User
- Verwalter
- a
- aaa
- abc
- admin
- administrador
- administrator
- admins
- asdf
- computer
- database
- home
- kanri
- kanri-sha
- login
- mary
- mgmt
- mysql
- owner
- pc
- qwer
- root
- server
- student
- teacher
- temp
- test
- user
- win
- wwwadmin
- x
- xp
- xyz
Passwords:
- <empty>
- 0
- 000000
- 00000000
- 007
- 1
- 110
- 111
- 111111
- 11111111
- 12
- 121212
- 123
- 123123
- 1234
- 12345
- 123456
- 1234567
- 12345678
- 123456789
- 1234qwer
- 123abc
- 123asd
- 123qwe
- 2002
- 2003
- 2600
- 54321
- 654321
- 654321
- 69
- 88888888
- Admin
- Administrador
- Administrateur
- Coordinatore
- Default
- Internet
- Login
- Ospite
- Password
- Verwalter
- a
- aaa
- abc
- abc123
- abcd
- admin
- admin123
- administrador
- administrator
- administrator
- admins
- alpha
- asdf
- asdfghjkl
- baby
- box
- changeme
- computer
- database
- database
- enable
- foobar
- god
- godblessyou
- home
- homework
- ihavenopass
- kids
- leet
- login
- love
- metal
- mybaby
- mybox
- mypass
- mypc
- oracle
- owner
- pass
- pass
- passwd
- password
- password123
- pat
- patrick
- pc
- penis
- poiuytrewq
- porn
- private
- pussy
- pw
- pwd
- qwer
- qwerty
- qwertyuiop
- red123
- root
- root
- school
- secret
- secret
- secrets
- server
- sex
- student
- super
- superman
- supersecret
- sybase
- teacher
- temp
- test
- test123
- user
- vagina
- werty
- win
- work
- wwwadmin
- x
- xp
- xxx
- xxyyzz
- yxcv
- z
- zxcv
- zxcvbnm
- Copies itself to any systems it compromised using the exploits previously mentioned.
- Queries the registry to steal the CD keys of various games.
- Ends the following processes that are associated with antivirus and firewall software:
- ACKWIN32.EXE
- ADVXDWIN.EXE
- AGENTSVR.EXE
- AGENTW.EXE
- ALERTSVC.EXE
- ALOGSERV.EXE
- AMON9X.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
- AVE32.EXE
- AVGCC32.EXE
- AVGCTRL.EXE
- AVGNT.EXE
- AVGSERV.EXE
- AVGSERV9.EXE
- AVGUARD.EXE
- AVGW.EXE
- AVKPOP.EXE
- AVKSERV.EXE
- AVKSERVICE.EXE
- AVKWCTL9.EXE
- AVNT.EXE
- AVP.EXE
- AVP32.EXE
- AVPCC.EXE
- AVPDOS32.EXE
- AVPM.EXE
- AVPTC32.EXE
- AVPUPD.EXE
- AVSCHED32.EXE
- AVSYNMGR.AVSYNMGR.EXE
- AVWIN95.EXE
- AVWINNT.EXE
- AVWUPD32.EXE
- AVWUPSRV.EXE
- AVXMONITOR9X.EXE
- AVXMONITORNT.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
- CCAPP.EXE
- CCEVTMGR.EXE
- CCPXYSVC.EXE
- CDP.EXE
- CFGWIZ.EXE
- CFIADMIN.EXE
- CFIAUDIT.EXE
- CFINET.EXE
- CFINET32.EXE
- CLAW95.EXE
- CLAW95CF.EXE
- CLEAN.EXE
- CLEANER.EXE
- CLEANER3.EXE
- CLEANPC.EXE
- CMGRDIAN.EXE
- CMON016.EXE
- CONNECTIONMONITOR.EXE
- CPD.EXE
- CPF9X206.EXE
- CPFNT206.EXE
- CTRL.EXE
- CV.EXE
- CWNB181.EXE
- CWNTDWMO.EXE
- DEFALERT.EXE
- DEFSCANGUI.EXE
- DEFWATCH.EXE
- DEPUTY.EXE
- DOORS.EXE
- DPF.EXE
- DPFSETUP.EXE
- DRWATSON.EXE
- DRWEB32.EXE
- DVP95.EXE
- DVP95_0.EXE
- ECENGINE.EXE
- EFPEADM.EXE
- ENT.EXE
- ESAFE.EXE
- ESCANH95.EXE
- ESCANHNT.EXE
- ESCANV95.EXE
- ESPWATCH.EXE
- ETRUSTCIPE.EXE
- EVPN.EXE
- EXANTIVIRUS-CNET.EXE
- EXE.AVXW.EXE
- EXPERT.EXE
- F-AGNT95.EXE
- F-PROT.EXE
- F-PROT95.EXE
- F-STOPW.EXE
- FAMEH32.EXE
- FAST.EXE
- FCH32.EXE
- FIH32.EXE
- FINDVIRU.EXE
- FIREWALL.EXE
- FLOWPROTECTOR.EXE
- FNRB32.EXE
- FP-WIN.EXE
- FP-WIN_TRIAL.EXE
- FPROT.EXE
- FRW.EXE
- FSAA.EXE
- FSAV.EXE
- FSAV32.EXE
- FSAV530STBYB.EXE
- FSAV530WTBYB.EXE
- FSAV95.EXE
- FSGK32.EXE
- FSM32.EXE
- FSMA32.EXE
- FSMB32.EXE
- GBMENU.EXE
- GBPOLL.EXE
- GENERICS.EXE
- GUARD.EXE
- GUARDDOG.EXE
- HACKTRACERSETUP.EXE
- HTLOG.EXE
- HWPE.EXE
- IAMAPP.EXE
- IAMSERV.EXE
- IAMSTATS.EXE
- IBMASN.EXE
- IBMAVSP.EXE
- ICLOAD95.EXE
- ICLOADNT.EXE
- ICMON.EXE
- ICSUPP95.EXE
- ICSUPPNT.EXE
- IFACE.EXE
- IFW2000.EXE
IOMON98.EXE
- IPARMOR.EXE
- IRIS.EXE
- ISRV95.EXE
- JAMMER.EXE
- JEDI.EXE
- KAVLITE40ENG.EXE
- KAVPERS40ENG.EXE
- KAVPF.EXE
- KERIO-PF-213-EN-WIN.EXE
- KERIO-WRL-421-EN-WIN.EXE
- KERIO-WRP-421-EN-WIN.EXE
- KILLPROCESSSETUP161.EXE
- LDNETMON.EXE
- LDPRO.EXE
- LDPROMENU.EXE
- LDSCAN.EXE
- LOCALNET.EXE
- LOCKDOWN.EXE
- LOCKDOWN2000.EXE
- LOOKOUT.EXE
- LSETUP.EXE
- LUALL.EXE
- LUAU.EXE
- LUCOMSERVER.EXE
- LUINIT.EXE
- LUSPT.EXE
- MCAGENT.EXE
- MCMNHDLR.EXE
- MCSHIELD.EXE
- MCTOOL.EXE
- MCUPDATE.EXE
- MCVSRTE.EXE
- MCVSSHLD.EXE
- MFW2EN.EXE
- MFWENG3.02D30.EXE
- MGAVRTCL.EXE
- MGAVRTE.EXE
- MGHTML.EXE
- MGUI.EXE
- MINILOG.EXE
- MONITOR.EXE
- MOOLIVE.EXE
- MPFAGENT.EXE
- MPFSERVICE.EXE
- MPFTRAY.EXE
- MRFLUX.EXE
- MSCONFIG.EXE
- MSINFO32.EXE
- MSSMMC32.EXE
- MU0311AD.EXE
- MWATCH.EXE
- N32SCANW.EXE
- NAV AUTO-PROTECT.NAV80TRY.EXE
- NAVAP.NAVAPSVC.EXE
- NAVAPSVC.EXE
- NAVAPW32.EXE
- NAVDX.EXE
- NAVENGNAVEX15.NAVLU32.EXE
- NAVLU32.EXE
- NAVNT.EXE
- NAVSTUB.EXE
- NAVW32.EXE
- NAVWNT.EXE
- NC2000.EXE
- NCINST4.EXE
- NDD32.EXE
- NEOMONITOR.EXE
- NEOWATCHLOG.EXE
- NETARMOR.EXE
- NETINFO.EXE
- NETMON.EXE
- NETSCANPRO.EXE
- NETSPYHUNTER-1.2.EXE
- NETSTAT.EXE
- NETUTILS.EXE
- NISSERV.EXE
- NISUM.EXE
- NMAIN.EXE
- NOD32.EXE
- NORMIST.EXE
- NORTON_INTERNET_SECU_3.0_407.EXE
- NOTSTART.EXE
- NPF40_TW_98_NT_ME_2K.EXE
- NPFMESSENGER.EXE
- NPROTECT.EXE
- NPSCHECK.EXE
- NPSSVC.EXE
- NSCHED32.EXE
- NTRTSCAN.EXE
- NTVDM.EXE
- NTXCONFIG.EXE
- NUI.EXE
- NUPGRADE.EXE
- NVARCH16.EXE
- NVC95.EXE
- NVSVC32.EXE
- NWINST4.EXE
- NWSERVICE.EXE
- NWTOOL16.EXE
- OSTRONET.EXE
- OUTPOST.EXE
- OUTPOSTINSTALL.EXE
- OUTPOSTPROINSTALL.EXE
- PADMIN.EXE
- PANIXK.EXE
- PAVCL.EXE
- PAVPROXY.EXE
- PAVSCHED.EXE
- PAVW.EXE
- PCC2002S902.EXE
- PCC2K_76_1436.EXE
- PCCIOMON.EXE
- PCCNTMON.EXE
- PCCWIN97.EXE
- PCCWIN98.EXE
- PCDSETUP.EXE
- PCFWALLICON.EXE
- PCIP10117_0.EXE
- PCSCAN.EXE
- PDSETUP.EXE
- PERISCOPE.EXE
- PERSFW.EXE
- PERSWF.EXE
- PF2.EXE
- PFWADMIN.EXE
- PINGSCAN.EXE
- PLATIN.EXE
- POP3TRAP.EXE
- POPROXY.EXE
- POPSCAN.EXE
- PORTDETECTIVE.EXE
- PORTMONITOR.EXE
- PPINUPDT.EXE
- PPTBC.EXE
- PPVSTOP.EXE
- PROCESSMONITOR.EXE
- PROCEXPLORERV1.0.EXE
- PROGRAMAUDITOR.EXE
- PROPORT.EXE
- PROTECTX.EXE
- PSPF.EXE
- PURGE.EXE
- PVIEW95.EXE
- QCONSOLE.EXE
- QSERVER.EXE
- RAPAPP.EXE
- RAV7.EXE
- RAV7WIN.EXE
- RAV8WIN32ENG.EXE
- REALMON.EXE
- REGEDIT.EXE
- REGEDT32.EXE
- RESCUE.EXE
- RESCUE32.EXE
- RRGUARD.EXE
- RSHELL.EXE
- RTVSCAN.EXE
- RULAUNCH.EXE
- SAFEWEB.EXE
- SBSERV.EXE
- SCAN32.EXE
- SCAN95.EXE
- SCANPM.EXE
- SCRSCAN.EXE
- SD.EXE
- SERV95.EXE
- SETUPVAMEEVAL.EXE
- SETUP_FLOWPROTECTOR_US.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
- SWEEP95.EXE
- SWEEPNET.SWEEPSRV.SYS.SWNETSUP.EXE
- SYMPROXYSVC.EXE
- SYMTRAY.EXE
- SYSEDIT.EXE
- TASKMON.EXE
- TAUMON.EXE
- TBSCAN.EXE
- TC.EXE
- TCA.EXE
- TCM.EXE
- TDS-3.EXE
- TDS2-98.EXE
- TDS2-NT.EXE
- TFAK.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
- VET32.EXE
- VET95.EXE
- VETTRAY.EXE
- VFSETUP.EXE
- VIR-HELP.EXE
- VIRUSMDPERSONALFIREWALL.EXE
- VNLAN300.EXE
- VNPC3000.EXE
- VPC32.EXE
- VPC42.EXE
- VPFW30S.EXE
- VPTRAY.EXE
- VSCAN40.EXE
- VSCENU6.02D30.EXE
- VSCHED.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
- WEBTRAP.EXE
- WFINDV32.EXE
- WGFE95.EXE
- WHOSWATCHINGME.EXE
- WIMMUN32.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
- ZONEALARM.EXE
- _AVP32.EXE
- _AVPCC.EXE
- _AVPM.EXE
- Attempts to end some of the following processes associated with other worms:
- dllhost.exe
- msblast.exe
- mspatch.exe
- penis32.exe
- tftpd.exe
- winppr32.exe
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.
Writeup By: Heather Shannon
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