TROJ_FAKEAV.CLS

It terminates itself if any of the specific condition is met.

This routine is done by the malware to avoid analysis tools, sandboxes, virtual machines, and security applications.

It also creates specific registry entry to enable automatic execution of the downloaded file.

This Trojan may be unknowingly downloaded by a user while visiting malicious websites.

As of this writing, the said sites are inaccessible.

Arrival Details

This Trojan may be unknowingly downloaded by a user while visiting malicious websites.

Installation

This Trojan adds the following folders:

• %System Root%\Documents and Settings\All Users\Application Data\{random characters}

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

It adds the following mutexes to ensure that only one of its copies runs at any one time:

• Virus1Doctor1Installer1Mutex1

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\RunOnce
VDC = %User Temp%\{malware file name}.exe {parameter}

Other System Modifications

This Trojan adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
{application name}
Debugger = svchost.exe

Where {application name} may be any of the following:

• AAWTray.exe
• AVENGINE.EXE
• Ad-Aware.exe
• AluSchedulerSvc.exe
• MPFSrv.exe
• MSASCui.exe
• McSACore.exe
• PavFnSvr.exe
• PsCtrls.exe
• PsImSvc.exe
• PskSvc.exe
• TPSrv.exe
• WebProxy.exe
• _avp32.exe
• _avpcc.exe
• _avpm.exe
• aAvgApi.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
• ashDisp.exe
• atcon.exe
• atguard.exe
• atro55en.exe
• atupdater.exe
• atwatch.exe
• au.exe
• aupdate.exe
• auto-protect.nav80try.exe
• autodown.exe
• autotrace.exe
• autoupdate.exe
• avcenter.exe
• avciman.exe
• avconsol.exe
• ave32.exe
• avgcc32.exe
• avgctrl.exe
• avgemc.exe
• avgnt.exe
• avgrsx.exe
• avgserv.exe
• avgserv9.exe
• avgtray.exe
• avguard.exe
• avgui.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
• avsched32.exe
• avsynmgr.exe
• avwin.exe
• avwin95.exe
• avwinnt.exe
• avwupd.exe
• avwupd32.exe
• avwupsrv.exe
• avxmonitor9x.exe
• avxmonitornt.exe
• avxquar.exe
• backweb.exe
• bargains.exe
• bd_professional.exe
• bdagent.exe
• bdmcon.exe
• beagle.exe
• belt.exe
• bidef.exe
• bidserver.exe
• bipcp.exe
• bipcpevalsetup.exe
• bisp.exe
• blackd.exe
• blackice.exe
• blink.exe
• blss.exe
• bootconf.exe
• bootwarn.exe
• borg2.exe
• bpc.exe
• brasil.exe
• bs120.exe
• bundle.exe
• bvt.exe
• ccSvcHst.exe
• ccapp.exe
• ccevtmgr.exe
• ccpxysvc.exe
• cdp.exe
• cfd.exe
• cfgwiz.exe
• cfiadmin.exe
• cfiaudit.exe
• cfinet.exe
• cfinet32.exe
• claw95.exe
• claw95cf.exe
• clean.exe
• cleaner.exe
• cleaner3.exe
• cleanpc.exe
• click.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
• egui.exe
• ekrn.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-agnt95.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
• icload95.exe
• icloadnt.exe
• icmon.exe
• icsupp95.exe
• icsuppnt.exe
• idle.exe
• iedll.exe
• iedriver.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
• 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
• luau.exe
• lucomserver.exe
• luinit.exe
• luspt.exe
• mapisvc32.exe
• mcagent.exe
• mcmnhdlr.exe
• mcmscsvc.exe
• mcnasvc.exe
• mcproxy.exe
• mcshell.exe
• mcshield.exe
• mcsysmon.exe
• mctool.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
• msdm.exe
• msdos.exe
• msiexec16.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
• nc2000.exe
• ncinst4.exe
• ndd32.exe
• neomonitor.exe
• neowatchlog.exe
• netarmor.exe
• netd32.exe
• netinfo.exe
• netmon.exe
• netscanpro.exe
• netspyhunter-1.2.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
• nvarch16.exe
• nvc95.exe
• nvsvc32.exe
• nwinst4.exe
• nwservice.exe
• nwtool16.exe
• ollydbg.exe
• onsrvr.exe
• optimize.exe
• ostronet.exe
• otfix.exe
• outpost.exe
• outpostinstall.exe
• outpostproinstall.exe
• padmin.exe
• panixk.exe
• patch.exe
• pavcl.exe
• pavproxy.exe
• pavprsrv.exe
• pavsched.exe
• pavsrv51.exe
• pavw.exe
• pccwin98.exe
• pcfwallicon.exe
• pcip10117_0.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
• regedt32.exe
• rescue.exe
• rescue32.exe
• rrguard.exe
• rshell.exe
• rtvscan.exe
• rtvscn95.exe
• rulaunch.exe
• safeweb.exe
• sahagent.exe
• save.exe
• savenow.exe
• sbserv.exe
• sc.exe
• scam32.exe
• scan32.exe
• scan95.exe
• scanpm.exe
• sched.exe
• scrscan.exe
• serv95.exe
• setup_flowprotector_us.exe
• setupvameeval.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
• ssg_4104.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
• symlcsvc.exe
• symproxysvc.exe
• symtray.exe
• system.exe
• system32.exe
• sysupd.exe
• taumon.exe
• tbscan.exe
• tc.exe
• tca.exe
• tcm.exe
• tds-3.exe
• tds2-98.exe
• tds2-nt.exe
• teekids.exe
• tfak.exe
• tfak5.exe
• tgbob.exe
• titanin.exe
• titaninxp.exe
• trickler.exe
• trjscan.exe
• trjsetup.exe
• trojantrap3.exe
• tsadbot.exe
• tvmd.exe
• tvtmd.exe
• undoboot.exe
• updat.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
• wininitx.exe
• winlogin.exe
• winmain.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.exe

Download Routine

This Trojan downloads updated copies of itself from the following websites:

• %User Temp%\{malware file name}.exe

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)

It connects to the following website(s) to download and execute a malicious file:

• http://{BLOCKED}7.67.94/index.php?{random string}
• http://{BLOCKED}2.8.98/index.php?{random string}
• http://{BLOCKED}sft.com

It saves the files it downloads using the following names:

• %User Temp%\setup.exe
• %System Root%\Documents and Settings\All Users\Application Data\{random characters}\{random characters}.exe

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

As of this writing, the said sites are inaccessible.

NOTES:
This Trojan terminates itself if any of the following conditions is met:

• Its file name is C:\file.exe
• User Name of the logged-in user is CurrentUser
• Computer name of the affected system is Sandbox
• Processor Infomation contains the string VMWARE
• Product ID of the affected system is equal to any of the following:
  • 76487-337-8429955-22614
  • 76487-644-3177037-23510
  • 55274-640-2673064-23950
• Any of the following files is loaded in memory:
  • sbiedll.dll
  • DBGHELP.DLL
  • OLLYDBG
• Any of the registry keys exist in the system:

HKEY_LOCAL_MACHINE\SOFTWARE\Zone Labs\ZoneAlarm

HKEY_LOCAL_MACHINE\SOFTWARE\Eset\Nod

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\WebrootDesktopFirewall.exe

HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\Norton AntiVirus

HKEY_LOCAL_MACHINE\SOFTWARE\Sophos\SAVService\Application

HKEY_LOCAL_MACHINE\SOFTWARE\rising\Rav

HKEY_LOCAL_MACHINE\SOFTWARE\KasperskyLab\InstalledProducts\Kaspersky Anti-Virus Personal

HKEY_LOCAL_MACHINE\SOFTWARE\Data Fellows\F-Secure

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{E58B329B-FB28-4874-90DE-0D7CB2709267}

HKEY_LOCAL_MACHINE\SOFTWARE\BitDefender\BitDefender Antivirus 2008

HKEY_LOCAL_MACHINE\SOFTWARE\AVG

HKEY_LOCAL_MACHINE\SOFTWARE\ComodoGroup\CDI

HKEY_LOCAL_MACHINE\SOFTWARE\Agnitum\Security Suite

The above mentioned routines are done by the malware to avoid analysis tools, sandboxes, virtual machines, and security applications.

It creates the following registry entry to enable automatic execution of the downloaded file:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
VDC = %System Root%\Documents and Settings\All Users\Application Data\{random characters} {parameter}