Sybari Virus Alerts

Exploit-WMF trojan

1/3/2006 12:00:00 AM

Downloads backdoor trojan
The trojan seen at the time of writing was spammed out in email, using the attachment name HappyNewYear.jpg (note that the file is not a true JPG file). This trojan will attempt to download another trojan when it executes. This is a Bifrose backdoor trojan which can give an attacker access to your computer.

****PLEASE NOTE****

For Windows platforms, users must set the "ScanAllAttachments" registry value to 1 for this filetype to be detected.

For Domino platforms, the following can be done:

Open the "notes.ini" file.
Add the ".JPG" and ".WMF" extension to the "AntigenAveExts" parameter.
Save the file.
Recycle services.

See Microsoft Security Advisory (912840), Vulnerability in Graphics Rendering Engine Could Allow Remote Code Execution.
http://www.microsoft.com/technet/security/advisory/912840.mspx

W32/Sober.r@MM

10/6/2005 12:00:00 AM

This mass-mailing email virus arrives in an email message with one of the following attachment names:
KlassenFoto.zip
pword_change.zip
Inside the ZIP archive is a file named PW_Klass.Pic.packed-bitmap.exe.
Like many Sober variants, this variant uses several different email messages randomly, in either English or
German depending on the version of Windows.
W32/Sober-O is a mass-mailing worm.

W32/Tpbot-A

8/17/2005 12:00:00 AM

W32/Tpbot-A is a network worm with backdoor Trojan functionality for the Windows platform.

When run, W32/Tpbot-A copies itself to the Windows system folder as wintbp.exe and creates the following registry entry in order to run each time a user logs on:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
wintbp.exe
"wintbp.exe"

W32/Tpbot-A spreads using a variety of techniques including the exploitation of operating system vulnerabilities such as LSASS (MS04-011) and PnP (MS05-039).

The backdoor component connects to an IRC server and joins a predetermined channel where it then awaits commands from attackers.

W32/Tpbot-A may attempt to download and execute additional files.

W32/Mytob-CP

5/31/2005 12:00:00 AM

W32/Mytob-CP is an email worm and IRC backdoor Trojan for the Windows platform.
W32/Mytob-CP includes functionality to modify the HOSTS file.
When first run W32/Mytob-CP copies itself to <Windows system folder>\Lien Van de Kelder.exe.
The following registry entries are created to run Lien Van de Kelder.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
http://www.lienvandekelder.be
Lien Van de Kelder.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
http://www.lienvandekelder.be
Lien Van de Kelder.exe
W32/Mytob-CP sets the following registry entries, disabling the automatic startup of other software:
HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess
Start
4
W32/Mytob-CP send itself to emails harvested from files on the hard disk with the following extensions:
TXT, HTMB, SHTL, JSPL, CGIL, XMLS, PHPQ, ASPD, DBXN, TBBG, ADBH, WAB, PL

W32/Mytob-CP modifies the HOSTS file, changing the URL-to-IP mappings for selected websites, therefore preventing normal access to the the following sites:
127.0.0.1 avp.com
127.0.0.1 ca.com
127.0.0.1 customer.symantec.com
127.0.0.1 dispatch.mcafee.com
127.0.0.1 download.mcafee.com
127.0.0.1 f-secure.com
127.0.0.1 kaspersky-labs.com
127.0.0.1 kaspersky.com
127.0.0.1 liveupdate.symantec.com
127.0.0.1 liveupdate.symantecliveupdate.com
127.0.0.1 mast.mcafee.com
127.0.0.1 mcafee.com
127.0.0.1 microsoft.com
127.0.0.1 my-etrust.com
127.0.0.1 nai.com
127.0.0.1 networkassociates.com
127.0.0.1 oxyd.fr
127.0.0.1 rads.mcafee.com
127.0.0.1 secure.nai.com
127.0.0.1 securityresponse.symantec.com
127.0.0.1 sophos.com
127.0.0.1 symantec.com
127.0.0.1 t35.com
127.0.0.1 t35.net
127.0.0.1 trendmicro.com
127.0.0.1 update.symantec.com
127.0.0.1 updates.symantec.com
127.0.0.1 us.mcafee.com
127.0.0.1 viruslist.com
127.0.0.1 viruslist.com
127.0.0.1 virustotal.com
127.0.0.1 www.avp.com
127.0.0.1 www.ca.com
127.0.0.1 www.f-secure.com
127.0.0.1 www.grisoft.com
127.0.0.1 www.kaspersky.com
127.0.0.1 www.mcafee.com
127.0.0.1 www.microsoft.com
127.0.0.1 www.msn.com
127.0.0.1 www.my-etrust.com
127.0.0.1 www.nai.com
127.0.0.1 www.networkassociates.com
127.0.0.1 www.oxyd.fr
127.0.0.1 www.sophos.com
127.0.0.1 www.symantec.com
127.0.0.1 www.t35.com
127.0.0.1 www.t35.net
127.0.0.1 www.trendmicro.com
127.0.0.1 www.viruslist.com
127.0.0.1 www.virustotal.com
W32/Mytob-CP also terminates the following processes:
_AVP32.EXE
_AVPCC.EXE
_AVPM.EXE
ACKWIN32.EXE
ADAWARE.EXE
ADVXDWIN.EXE
AGENTSVR.EXE
AGENTW.EXE
ALERTSVC.EXE
ALEVIR.EXE
ALOGSERV.EXE
AMON9X.EXE
ANTI-TROJAN.EXE
ANTIVIRUS.EXE
ANTS.EXE
APIMONITOR.EXE
APLICA32.EXE
APVXDWIN.EXE
ARR.EXE
ATCON.EXE
ATGUARD.EXE
ATRO55EN.EXE
ATUPDATER.EXE
ATUPDATER.EXE
ATWATCH.EXE
AU.EXE
AUPDATE.EXE
AUPDATE.EXE
AUTO-PROTECT.NAV80TRY.EXE
AUTODOWN.EXE
AUTODOWN.EXE
AUTOTRACE.EXE
AUTOTRACE.EXE
AUTOUPDATE.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
AVLTMAIN.EXE
AVNT.EXE
AVP.EXE
AVP32.EXE
AVPCC.EXE
AVPDOS32.EXE
AVPM.EXE
AVPTC32.EXE
AVPUPD.EXE
AVPUPD.EXE
AVSCHED32.EXE
AVSYNMGR.EXE
AVWINNT.EXE
AVWUPD.EXE
AVWUPD32.EXE
AVWUPD32.EXE
AVWUPSRV.EXE
AVXMONITOR9X.EXE
AVXMONITORNT.EXE
AVXQUAR.EXE
AVXQUAR.EXE
BACKWEB.EXE
BARGAINS.EXE
BD_PROFESSIONAL.EXE
BEAGLE.EXE
BELT.EXE
BIDEF.EXE
BIDSERVER.EXE
BIPCP.EXE
BIPCPEVALSETUP.EXE
BISP.EXE
BLACKD.EXE
BLACKICE.EXE
BLSS.EXE
BOOTCONF.EXE
BOOTWARN.EXE
BORG2.EXE
BPC.EXE
BRASIL.EXE
BS120.EXE
BUNDLE.EXE
BVT.EXE
CCAPP.EXE
CCEVTMGR.EXE
CCPXYSVC.EXE
CDP.EXE
CFD.EXE
CFGWIZ.EXE
CFIADMIN.EXE
CFIAUDIT.EXE
CFIAUDIT.EXE
CFINET.EXE
CFINET32.EXE
CLAW95CF.EXE
CLEAN.EXE
CLEANER.EXE
CLEANER3.EXE
CLEANPC.EXE
CLICK.EXE
CMD.EXE
CMD32.EXE
CMESYS.EXE
CMGRDIAN.EXE
CMON016.EXE
CONNECTIONMONITOR.EXE
CPD.EXE
CPF9X206.EXE
CPFNT206.EXE
CTRL.EXE
CV.EXE
CWNB181.EXE
CWNTDWMO.EXE
DATEMANAGER.EXE
DCOMX.EXE
DEFALERT.EXE
DEFSCANGUI.EXE
DEFWATCH.EXE
DEPUTY.EXE
DIVX.EXE
DLLCACHE.EXE
DLLREG.EXE
DOORS.EXE
DPF.EXE
DPFSETUP.EXE
DPPS2.EXE
DRWATSON.EXE
DRWEB32.EXE
DRWEBUPW.EXE
DSSAGENT.EXE
DVP95.EXE
DVP95_0.EXE
ECENGINE.EXE
EFPEADM.EXE
EMSW.EXE
ENT.EXE
ESAFE.EXE
ESCANHNT.EXE
ESCANV95.EXE
ESPWATCH.EXE
ETHEREAL.EXE
ETRUSTCIPE.EXE
EVPN.EXE
EXANTIVIRUS-CNET.EXE
EXE.AVXW.EXE
EXPERT.EXE
EXPLORE.EXE
F-PROT.EXE
F-PROT95.EXE
F-STOPW.EXE
FAMEH32.EXE
FAST.EXE
FCH32.EXE
FIH32.EXE
FINDVIRU.EXE
FIREWALL.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
GATOR.EXE
GBMENU.EXE
GBPOLL.EXE
GENERICS.EXE
GMT.EXE
GUARD.EXE
GUARDDOG.EXE
HACKTRACERSETUP.EXE
HBINST.EXE
HBSRV.EXE
HOTACTIO.EXE
HOTPATCH.EXE
HTLOG.EXE
HTPATCH.EXE
HWPE.EXE
HXDL.EXE
HXIUL.EXE
IAMAPP.EXE
IAMSERV.EXE
IAMSTATS.EXE
IBMASN.EXE
IBMAVSP.EXE
ICLOADNT.EXE
ICMON.EXE
ICSUPP95.EXE
ICSUPPNT.EXE
IDLE.EXE
IEDLL.EXE
IEDRIVER.EXE
IEXPLORER.EXE
IFACE.EXE
IFW2000.EXE
INETLNFO.EXE
INFUS.EXE
INFWIN.EXE
INIT.EXE
INTDEL.EXE
INTREN.EXE
IOMON98.EXE
ISTSVC.EXE
JAMMER.EXE
JDBGMRG.EXE
JEDI.EXE
KAVLITE40ENG.EXE
KAVPERS40ENG.EXE
KAVPF.EXE
KAZZA.EXE
KEENVALUE.EXE
KERIO-PF-213-EN-WIN.EXE
KERIO-WRL-421-EN-WIN.EXE
KERIO-WRP-421-EN-WIN.EXE
KERNEL32.EXE
KILLPROCESSSETUP161.EXE
LAUNCHER.EXE
LDNETMON.EXE
LDPRO.EXE
LDPROMENU.EXE
LDSCAN.EXE
LNETINFO.EXE
LOADER.EXE
LOCALNET.EXE
LOCKDOWN.EXE
LOCKDOWN2000.EXE
LOOKOUT.EXE
LORDPE.EXE
LSETUP.EXE
LUALL.EXE
LUALL.EXE
LUAU.EXE
LUCOMSERVER.EXE
LUINIT.EXE
LUSPT.EXE
MAPISVC32.EXE
MCAGENT.EXE
MCMNHDLR.EXE
MCSHIELD.EXE
MCTOOL.EXE
MCUPDATE.EXE
MCUPDATE.EXE
MCVSRTE.EXE
MCVSSHLD.EXE
MD.EXE
MFIN32.EXE
MFW2EN.EXE
MFWENG3.02D30.EXE
MGAVRTCL.EXE
MGAVRTE.EXE
MGHTML.EXE
MGUI.EXE
MINILOG.EXE
MMOD.EXE
MONITOR.EXE
MOOLIVE.EXE
MOSTAT.EXE
MPFAGENT.EXE
MPFSERVICE.EXE
MPFTRAY.EXE
MRFLUX.EXE
MSAPP.EXE
MSBB.EXE
MSBLAST.EXE
MSCACHE.EXE
MSCCN32.EXE
MSCMAN.EXE
MSCONFIG.EXE
MSDM.EXE
MSDOS.EXE
MSIEXEC16.EXE
MSINFO32.EXE
MSLAUGH.EXE
MSMGT.EXE
MSMSGRI32.EXE
MSSMMC32.EXE
MSSYS.EXE
MSVXD.EXE
MU0311AD.EXE
MWATCH.EXE
N32SCANW.EXE
NAV.EXE
NAVAP.NAVAPSVC.EXE
NAVAPSVC.EXE
NAVAPW32.EXE
NAVDX.EXE
NAVLU32.EXE
NAVNT.EXE
NAVSTUB.EXE
NAVW32.EXE
NAVWNT.EXE
NCINST4.EXE
NDD32.EXE
NEOMONITOR.EXE
NEOWATCHLOG.EXE
NETARMOR.EXE
NETD32.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
NSSYS32.EXE
NSTASK32.EXE
NSUPDATE.EXE
NT.EXE
NTRTSCAN.EXE
NTVDM.EXE
NTXconfig.EXE
NUI.EXE
NUPGRADE.EXE
NUPGRADE.EXE
NVARCH16.EXE
NVC95.EXE
NVSVC32.EXE
NWINST4.EXE
NWSERVICE.EXE
NWTOOL16.EXE
OLLYDBG.EXE
ONSRVR.EXE
OPTIMIZE.EXE
OSTRONET.EXE
OTFIX.EXE
OUTPOST.EXE
OUTPOST.EXE
OUTPOSTINSTALL.EXE
OUTPOSTPROINSTALL.EXE
PADMIN.EXE
PANIXK.EXE
PATCH.EXE
PAVCL.EXE
PAVPROXY.EXE
PAVSCHED.EXE
PAVW.EXE
PCFWALLICON.EXE
PCSCAN.EXE
PDSETUP.EXE
PERISCOPE.EXE
PERSFW.EXE
PERSWF.EXE
PF2.EXE
PFWADMIN.EXE
PGMONITR.EXE
PINGSCAN.EXE
PLATIN.EXE
POP3TRAP.EXE
POPROXY.EXE
POPSCAN.EXE
PORTDETECTIVE.EXE
PORTMONITOR.EXE
POWERSCAN.EXE
PPINUPDT.EXE
PPTBC.EXE
PPVSTOP.EXE
PRIZESURFER.EXE
PRMT.EXE
PRMVR.EXE
PROCDUMP.EXE
PROCESSMONITOR.EXE
PROCEXPLORERV1.0.EXE
PROGRAMAUDITOR.EXE
PROPORT.EXE
PROTECTX.EXE
PSPF.EXE
PURGE.EXE
QCONSOLE.EXE
QSERVER.EXE
RAPAPP.EXE
RAV7.EXE
RAV7WIN.EXE
RAV8WIN32ENG.EXE
RAY.EXE
RB32.EXE
RCSYNC.EXE
REALMON.EXE
REGED.EXE
REGEDIT.EXE
REGEDT32.EXE
RESCUE.EXE
RESCUE32.EXE
RRGUARD.EXE
RSHELL.EXE
RTVSCAN.EXE
RTVSCN95.EXE
RULAUNCH.EXE
RUN32DLL.EXE
RUNDLL.EXE
RUNDLL16.EXE
RUXDLL32.EXE
SAFEWEB.EXE
SAHAGENT.EXE
SAVE.EXE
SAVENOW.EXE
SBSERV.EXE
SC.EXE
SCAM32.EXE
SCAN32.EXE
SCAN95.EXE
SCANPM.EXE
SCRSCAN.EXE
SETUP_FLOWPROTECTOR_US.EXE
SETUPVAMEEVAL.EXE
SFC.EXE
SGSSFW32.EXE
SH.EXE
SHELLSPYINSTALL.EXE
SHN.EXE
SHOWBEHIND.EXE
SMC.EXE
SMS.EXE
SMSS32.EXE
SOAP.EXE
SOFI.EXE
SPERM.EXE
SPF.EXE
SPHINX.EXE
SPOLER.EXE
SPOOLCV.EXE
SPOOLSV32.EXE
SPYXX.EXE
SREXE.EXE
SRNG.EXE
SS3EDIT.EXE
SSGRATE.EXE
ST2.EXE
START.EXE
STCLOADER.EXE
SUPFTRL.EXE
SUPPORT.EXE
SUPPORTER5.EXE
SVC.EXE
SVCHOSTC.EXE
SVCHOSTS.EXE
SVSHOST.EXE
SWEEP95.EXE
SWEEPNET.SWEEPSRV.SYS.SWNETSUP.EXE
SYMPROXYSVC.EXE
SYMTRAY.EXE
SYSEDIT.EXE
SYSTEM.EXE
SYSTEM32.EXE
SYSUPD.EXE
TASKMG.EXE
TASKMGR.EXE
TASKMO.EXE
TASKMON.EXE
TAUMON.EXE
TBSCAN.EXE
TC.EXE
TCA.EXE
TCM.EXE
TDS-3.EXE
TDS2-NT.EXE
TEEKIDS.EXE
TFAK.EXE
TFAK5.EXE
TGBOB.EXE
TITANIN.EXE
TITANINXP.EXE
TRACERT.EXE
TRICKLER.EXE
TRJSCAN.EXE
TRJSETUP.EXE
TROJANTRAP3.EXE
TSADBOT.EXE
TVMD.EXE
TVTMD.EXE
UNDOBOOT.EXE
UPDAT.EXE
UPDATE.EXE
UPDATE.EXE
UPGRAD.EXE
UTPOST.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
WEBDAV.EXE
WEBSCANX.EXE
WEBTRAP.EXE
WFINDV32.EXE
WHOSWATCHINGME.EXE
WIMMUN32.EXE
WIN-BUGSFIX.EXE
WIN32.EXE
WIN32US.EXE
WINACTIVE.EXE
WINDOW.EXE
WINDOWS.EXE
WININETD.EXE
WININIT.EXE
WININITX.EXE
WINLOGIN.EXE
WINMAIN.EXE
WINNET.EXE
WINPPR32.EXE
WINRECON.EXE
WINSERVN.EXE
WINSSK32.EXE
WINSTART.EXE
WINSTART001.EXE
WINTSK32.EXE
WINUPDATE.EXE
WKUFIND.EXE
WNAD.EXE
WNT.EXE
WRADMIN.EXE
WRCTRL.EXE
WSBGATE.EXE
WUPDATER.EXE
WUPDT.EXE
WYVERNWORKSFIREWALL.EXE
XPF202EN.EXE
ZAPRO.EXE
ZAPSETUP3001.EXE
ZATUTOR.EXE
ZONALM2601.EXE
ZONEALARM.E

W32/Sober-N

5/2/2005 12:00:00 AM

W32/Sober-N is a mass-mailing worm which sends itself to addresses harvested from the infected computer.

W32/Bagle.dldr

3/1/2005 12:00:00 AM

This variant copies itself to the %WinDir% \system32 as WINSHOST.EXE (34, 304 bytes) and adds the following registry hooks:

    * HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
      DownloadManager
    * HKEY_CURRENT_USER\Software\Microsoft\Windows\
      CurrentVersion\Run "winshost.exe" = %WinDir% \system32\winshost.exe
    * HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\
      CurrentVersion\Run "winshost.exe" = %WinDir% \system32\winshost.exe

It drops a file wiwshost.exe (18,944 bytes), which is detected as W32/Bagle.dll.gen . This file gets injected into the EXPLORER process and tries to download a file zo2.jpg from various sites. (Refer to Symptoms). It also terminates security services like its predecessors and in some cases renames the main security program executable.

Sets to "disable" the following services:

    * HKLM\System\CurrentControlSet\Services\wuauserv
    * HKLM\System\CurrentControlSet\Services\SharedAccess
    * HKLM\System\CurrentControlSet\Services\vsmon
    * HKLM\System\CurrentControlSet\Services\Alerter
    * HKLM\System\CurrentControlSet\Services\wuauserv
    * HKLM\System\CurrentControlSet\Services\McShield
    * HKLM\System\CurrentControlSet\Services\McAfeeFramework
    * HKLM\System\CurrentControlSet\Services\McTaskManager

Attempts to delete the following keys:

    * HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
      Symantec NetDriver Monitor
    * HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
      ccApp
    * HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
      NAV CfgWiz
    * HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
      SSC_UserPrompt
    * HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
      McAfee Guardian
    * HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
      McAfee.InstantUpdate.Monitor
    * HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
      APVXDWIN
    * HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
      KAV50
    * HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
      avg7_cc
    * HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
      avg7_emc
    * HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Zone Labs Client

It also modifies the file %WinDir% \system32\drivers\etc\hosts to prevent the user and any running software from contacting certain security websites. The trojanized hosts file is detected as "trojan QHosts" .

The trojan disables any configured HTTP proxy.

The last 3 Bagle Variants (.bb@MM , .bc@MM, .bd@MM) attempt to download a file named G.JPG from various sites and to execute it. In the meantime, some of those sites were hosting an executeable file.

When this file gets executed, it copies itself to the %WinDir% \system32 as WINSHOST.EXE (7172 bytes) and drops another file named WIDSHOST.EXE (11264 bytes) which get injected into the EXPLORER process and tries to download a ZOO.JPG from various sites.

W32/Mydoom.be@MM

2/21/2005 12:00:00 AM

This variant W32/Mydoom is similar to previous variants, it bears the following characteristics:

mass-mailing worm constructing messages using its own SMTP engine
harvests email addresses from the victim machine
spoofs the From: address

This virus attempts to download the BackDoor-CEB.f trojan from the following list of websites:

http://www.newgenerationcomics.net/banner/(neutered).jpg
http://www.aartanridge.org.uk/YaBBImages/(neutered).gif
http://www.eastcoastchoons.co.uk/4play/(neutered).JPG
http://www.foxalpha.com/charte/(neutered).jpg
http://www.sundayriders.co.uk/images/(neutered).gif
http://www.foxalpha.com/charte/(neutered).jpg
http://www.hooping.org/archives/(neutered).JPG
http://www.ribaforada.net/banners/(neutered).gif
ics.net/banner/(neutered).jpg

W32/Sober.k@MM

1/31/2005 12:00:00 AM

contains its own SMTP engine
source/target email addresses are harvested from the victim machine
outgoing messages maybe in English or German
Mail Propagation
spoofs the "From" header of constructed messages
The worm is packed with UPX.

Mail Propagation

The worm extracts target email addresses from the victim machine, and writes them to the file DATAMX.DAM in the %SysDir% . For example:

C:\WINNT\SYSTEM32\DATAMX.DAM

The worm will construct messages using German or English text, depending upon the recipient email address. For recipient addresses containing any of the following, German text is used:

.de
.at
.ch

The worm carries a pool of strings which it uses to construct the filename and Registry keys it uses for installing itself on the victim machine:

sys
host
dir
expoler
win
run
log
32
disc
crypt
data
diag
spool
service
smss32
The constructed filename always has an EXE extension. The worm installs itself into the Windows system directory using this constructed filename, for example:

C:\WINDOWS\SYSTEM32\SYSSPOOLDISC.EXE
The following files are also dropped into %SysDir%:

DATAMX.DAM (contains harvested email addresses)
DGSFZIPP.GMX (59.504 bytes, copy of the worm in a ZIP and base64 encoded)
Additionally the following 0 byte files are dropped:

dgssxy.yoi (0 bytes)
nonrunso.ber (0 bytes)
Odin-Anon.Ger (0 bytes)
sysmms32.lla (0 bytes)
The worm adds two Registry keys to run the copy of itself at system startup. The name of the key is also constructed from the pool of strings the worm carries. For example:

HKEY_CURRENT_USER\Software\Microsoft\Windows
\CurrentVersion\Run "adisccrypt" = %SYSDIR%\sysspooldisc.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
\CurrentVersion\Run " dircryptlog" = %SYSDIR%\sysspooldisc.exe
(where %SYSDIR% is C:\Windows\System32 or C:\Winnt\System32)

Network Traffic

Symptoms indicating the worm's presence on a network include:

outgoing messages matching the characteristics described here
unexpected NTP traffic on port 37 TCP
unexpected attempts to log into several GMX accounts (POP3)
unexpected outgoing DNS queries DNS servers on the internet to one or more of the following domains:
microsoft.com
bigfoot.com
yahoo.com
t-online.de
google.com
hotmail.com

W32/Bagle.bj@MM

1/27/2005 12:00:00 AM

This is a mass-mailing worm with the following characteristics:

contains its own SMTP engine to construct outgoing messages
harvests email addresses from the victim machine
the From: address of messages is spoofed
contains a remote access component (notification is sent to hacker)
copies itself to folders that have the phrase shar in the name (such as common peer-to-peer applications; KaZaa, Bearshare, Limewire, etc)
Mail Propagation

The virus copies itself into the Windows System directory as sysformat.exe. For example:

C:\WINNT\SYSTEM32\sysformat.exe
It also creates other files in this directory to perform its functions:

C:\WINNT\SYSTEM32\sysformat.exeopen
C:\WINNT\SYSTEM32\sysformat.exeopenopen
The following Registry key is added to hook system startup:

HKEY_CURRENT_USER\Software\Microsoft\Windows\
CurrentVersion\Run "sysformat" = C:\WINNT\SYSTEM32\sysformat.exe
Additionally, the following Registry keys are added:

HKEY_CURRENT_USER\Software\Microsoft\Params "TimeKey"
It deletes these values

"My AV"
"ICQ Net"
from the following Registry keys, if they are present:

HKEY_CURRENT_USER\Software\Microsoft\Windows\
CurrentVersion\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\
CurrentVersion\Run
A mutex is created to ensure only one instance of the worm is running at a time. One of the following mutex names is used in an attempt to stop particular variants of W32/Netsky running on the infected machine:

MuXxXxTENYKSDesignedAsTheFollowerOfSkynet-D
_-oO]xX|-S-k-y-N-e-t-|Xx[Oo-_
This worm attempts to terminate the process of security programs with the the following filenames:

mcagent.exe
mcvsshld.exe
mcshield.exe
mcvsescn.exe
mcvsrte.exe
DefWatch.exe
Rtvscan.exe
ccEvtMgr.exe
NISUM.EXE
ccPxySvc.exe
navapsvc.exe
NPROTECT.EXE
nopdb.exe
ccApp.exe
Avsynmgr.exe
VsStat.exe
Vshwin32.exe
alogserv.exe
RuLaunch.exe
Avconsol.exe
PavFires.exe
FIREWALL.EXE
ATUPDATER.EXE
LUALL.EXE
DRWEBUPW.EXE
AUTODOWN.EXE
NUPGRADE.EXE
OUTPOST.EXE
ICSSUPPNT.EXE
ICSUPP95.EXE
ESCANH95.EXE
AVXQUAR.EXE
ESCANHNT.EXE
ATUPDATER.EXE
AUPDATE.EXE
AUTOTRACE.EXE
AUTOUPDATE.EXE
AVXQUAR.EXE
AVWUPD32.EXE
AVPUPD.EXE
CFIAUDIT.EXE
UPDATE.EXE
NUPGRADE.EXE
MCUPDATE.EXE
pavsrv50.exe
AVENGINE.EXE
APVXDWIN.EXE
pavProxy.exe
navapw32.exe
navapsvc.exe
ccProxy.exe
navapsvc.exe
NPROTECT.EXE
SAVScan.exe
SNDSrvc.exe
symlcsvc.exe
LUCOMS~1.EXE
blackd.exe
bawindo.exe
FrameworkService.exe
VsTskMgr.exe
SHSTAT.EXE
UpdaterUI.exe
The worm opens random ports starting with 2339 (TCP) on the victim machine.

W32/Zafi.d@MM

12/14/2004 12:00:00 AM

This new variant contains the following characteristics:

contains its own SMTP engine to construct outgoing messages
spoofs the From: address
harvests target email addresses from the victim machine
outgoing email message body is either in Hungarian or English
displays p2p worm behaviour
shuts down security services

Mail Propagation

Email addresses are harvested from the following file extensions:

Harvested addresses are stored in five files in the system32 folder using random names and the file extension .DLL. For example:

c:\WINDOWS\SYSTEM\ckolieqt.dll
c:\WINDOWS\SYSTEM\fktnxowp.dll
c:\WINDOWS\SYSTEM\gczomkgr.dll
c:\WINDOWS\SYSTEM\hgtmrsvo.dll

The worm avoids sending itself to certain email addresses, those containing any of the following strings:

yaho
google
win
use
info
help
admi
webm
micro
msn
hotm
suppor
syman
viru
trend
secur
panda
cafee
sopho
kasper

The body of the email sent by the worm are in the form of Christmas greetings. Like previous variants, the worm sends itself out in different languages depending on the Top Level Domain (TLD) of the recipient's address. For example, a user with a .COM mail address, will receive the English mail body, while someone with an .DE Mail address will receive the German body.

P2P Propagation

The worm copies itself to directories on the C: drive containing one of the following strings:

share
upload
music

It copies itself using the below filenames:

winamp 5.7 new!.exe
ICQ 2005a new!.exe

Payload

In an attempt to thwart manual identification and cleaning of an infected machine, the worm will attempt to render the following processes containing the following strings unavailable:

reged
msconfig
task

The worm also attempts to shutdown security services like firewalls, and AV software upon execution.

The worm drops the following files to the %windir%\system32 folder:

C:\WINNT\system32\ .EXE - 11,745 bytes
C:\WINNT\system32\
C:\WINNT\system32\Norton Update.exe - 11,745 bytes
C:\WINNT\system32\ .DLL - (worm zipped up)
C:\s.cm - 20,552 bytes (winzip dll module)

It creates a registry key, so the file gets executed every time the machine starts:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows
\CurrentVersion\Run "Wxp4" = C:\WINDOWS\SYSTEM32\Norton Update.exe

It creates the following registry key to store information of the worm:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Wxp4