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The Internet threat alert status is currently normal. At present, no major epidemics or other serious incidents have been recorded by Kaspersky Lab’s monitoring service. Internet threat level: 1

Trojan.Win32.KillAV.bf

Detected Nov 09 2003 23:53 GMT
Released Nov 09 2003 23:53 GMT
Published Aug 09 2007 13:48 GMT

Technical Details
Payload
Removal instructions

Technical Details

This Trojan has a malicious payload. It is a Windows PE EXE file. It is 4 065 bytes in size. It is packed using FSG. The unpacked file is approximately 17KB in size. It is written in C++.

Installation

When launched, the Trojan copies its executable file to the Windows root directory:

%WinDir%\memore.exe

In order to ensure that the Trojan is launched automatically when the system is rebooted, the Trojan registers its executable file in the system registry:

[HKLM\Software\Microsoft\Windows\CurrentVersion\Run]
"Memory Check" = "%WinDir%\memore.exe"

Payload

When launching, the Trojan performs the following actions every half second:

stops services with the names listed below:

NAVAPSVC
PERSFW
AVPCC

terminates all processes that contain one of the strings listed below in their names:

_AVPM.EXE
_AVPCC.EXE
ACKWIN32.EXE
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
APVXDWIN.EXE
ATCON.EXE
ATGUARD.EXE
ATGUARD.EXE
ATRO55EN.EXE
ATUPDATER.EXE
ATWATCH.EXE
AUPDATE.EXE
AUTODOWN.EXE
AutoTrace.exe
AUTOUPDATE.EXE
AVCONSOL.EXE
AVGCC32.EXE
Avgctrl.exe
AVGCTRL.EXE
AvgServ.exe
AVGSERV.EXE
AVGSERV9.EXE
AVGW.EXE
avkpop.exe
AvkServ.exe
avkservice.exe
avkwctl9.exe
AVP.EXE
AVP32.EXE
AVPCC.EXE
AVPM.EXE
avpm.exe
Avsched32.exe
AvSynMgr
AVSYNMGR.EXE
AVWINNT.EXE
AVXMONITOR9X.EXE
AVXMONITORNT.EXE
AVXQUAR.EXE
AVXQUAR.EXE.EXE
AVXW.EXE
BD_PROFESSIONAL.EXE
BIDEF.EXE
BIDSERVER.EXE
BIPCP.EXE
BIPCPEVALSETUP.EXE
BISP.EXE
BLACKD.EXE
blackd.exe
BLACKICE.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
cleaner3.EXE
CLEANPC.EXE
CMGRDIAN.EXE
CMON016.EXE
CONNECTIONMONITOR.EXE
CPD.EXE
cpd.exe
Claw95.exe
CLAW95CF.EXE
Claw95cf.exe
CLEAN.EXE
CLEANER.EXE
cleaner.EXE
CLEANER3.EXE
CPF9X206.EXE
CPFNT206.EXE
CTRL.EXE
CV.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
EFPEADM.EXE
ENT.EXE
ESCANH95.EXE
ESCANHNT.EXE
ESCANV95.EXE
ETRUSTCIPE.EXE
ETRUSTCIPE.exe
EVPN.EXE
EXANTIVIRUS-CNET.EXE
EXPERT.EXE
F-AGNT95.EXE
fameh32.exe
FAST.EXE
fch32.exe
fih32.exe
FIREWALL.EXE
FLOWPROTECTOR.EXE
fnrb32.exe
F-PROT.EXE
F-PROT95.EXE
FP-WIN.EXE
FP-WIN_TRIAL.EXE
FRW.EXE
fsaa.exe
FSAV.EXE
fsav32.exe
FSAV530STBYB.EXE
FSAV530WTBYB.EXE
FSAV95.EXE
fsgk32.exe
fsm32.exe
fsma32.exe
fsmb32.exe
F-STOPW.EXE
f-stopw.exe
GBMENU.EXE
gbmenu.exe
gbpoll.exe
GBPOLL.EXE
GENERICS.EXE
GUARD.EXE
GUARDDOG.EXE
HACKTRACERSETUP.EXE
HTLOG.EXE
HWPE.EXE
IAMAPP.EXE
iamapp.exe
IAMSERV.EXE
iamserv.exe
IAMSTATS.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
lockdown2000.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
Monitor.exe
MOOLIVE.EXE
MPFAGENT.EXE
MPFSERVICE.exe
MPFTRAY.EXE
MRFLUX.EXE
MSCONFIG.EXE
MSINFO32.EXE
MSSMMC32.EXE
MU0311AD.EXE
MWATCH.EXE
MWATCH.exe
NAV
Auto-Protect
NAV80TRY.EXE
NAVAP
navapsvc.exe
NAVAPSVC.EXE
NAVAPW32.EXE
NAVDX.EXE
NAVENGNAVEX15
NAVLU32.EXE
NAVSTUB.EXE
NAVW32.EXE
Navw32.exe
NAVWNT.EXE
NC2000.EXE
NCINST4.EXE
NDD32.EXE
NEOMONITOR.EXE
NeoWatchLog.exe
NETARMOR.EXE
NETARMOR.EXE
NETINFO.EXE
NETMON.EXE
NETSCANPRO.EXE
NETSPYHUNTER-1.2.EXE
NETSTAT.EXE
NETUTILS.EXE
NISSERV.EXE
NISUM.EXE
NMAIN.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
pavproxy.exe
PAVPROXY.EXE
PCC2002S902.EXE
PCC2K_76_1436.EXE
PCCIOMON.EXE
pccntmon.EXE
pccwin97.EXE
PCCWIN98.EXE
PCDSETUP.EXE
PCFWALLICON.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
RTVSCN95.EXE
RULAUNCH.EXE
SAFEWEB.EXE
SBSERV.EXE
sbserv.exe
SCAN32.EXE
SCRSCAN.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
Sphinx.exe
SPYXX.EXE
SS3EDIT.EXE
ST2.EXE
SUPFTRL.EXE
SUPPORTER5.EXE
SWEEP95.EXE
SweepNet
SWEEPSRV.SYS
SWNETSUP.EXE
SYMPROXYSVC.EXE
SymProxySvc.exe
SYMTRAY.EXE
SYSEDIT.EXE
TASKMON.EXE
TAUMON.EXE
TC.EXE
TCA.EXE
TCM.EXE
TDS2-98.EXE
TDS2-NT.EXE
TDS-3.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
vbcmserv.exe
rtvscan.exe
VBCONS.EXE
VbCons.exe
VBUST.EXE
VBWIN9X.EXE
VBWINNTW.EXE
VCSETUP.EXE
VET32.EXE
VET32.exe
VET95.EXE
Vet95.exe
VETTRAY.EXE
VetTray.exe
VFSETUP.EXE
VIR-HELP.EXE
VIRUSMDPERSONALFIREWALL.EXE
VNLAN300.EXE
VNPC3000.EXE
VPC32.EXE
VPC42.EXE
VPFW30S.EXE
VPTRAY.EXE
VSCENU6.02D30.EXE
VSCHED.EXE
VSECOMR.EXE
vshwin32.exe
VSISETUP.EXE
VSMAIN.EXE
VSMON.EXE
vsmon.exe
VSSTAT.EXE
VSWIN9XE.EXE
VSWINNTSE.EXE
VSWINPERSE.EXE
W32DSM89.EXE
W9X.EXE
WATCHDOG.EXE
WEBSCANX.EXE
WEBTRAP.EXE
WGFE95.EXE
WHOSWATCHINGME.EXE
WIMMUN32.EXE
WINRECON.EXE
WNT.EXE
WRADMIN.EXE
WrAdmin.exe
WRCTRL.EXE
WrCtrl.exe
WSBGATE.EXE
WYVERNWORKSFIREWALL.EXE
XPF202EN.EXE
ZAPRO.EXE
zapro.exe
ZAPSETUP3001.EXE
ZATUTOR.EXE
ZAUINST.EXE
ZONALM2601.EXE
ZONEALARM.EXE
zonealarm.exe
AVGNT.EXE
AVGUARD.EXE
AVWUPSRV.EXE

Removal instructions

If your computer does not have an up-to-date antivirus, or does not have an antivirus solution at all, follow the instructions below to delete the malicious program:

  1. Use Task Manager to terminate the Trojan process.
  2. Delete the original Trojan file (the location will depend on how the program originally penetrated the victim machine).
  3. Delete the following file:
    %WinDir%\memore.exe
  4. Delete the following system registry key: (see What is a system registry and how do I use it for details on how to edit the registry).
    [HKLM\Software\Microsoft\Windows\CurrentVersion\Run]
    "Memory Check" = "%WinDir%\memore.exe"
  5. Update your antivirus databases and perform a full scan of the computer (download a trial version of Kaspersky Anti-Virus).

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Trojan

This type of behaviour covers malicious programs that delete, block, modify, or copy data, disrupt computer or network performance, but which cannot be classified under any of the behaviours identified above.

This classification also covers “multipurpose” Trojan programs, i.e. those that are capable of conducting several actions at once and which demonstrate several Trojan behaviours in a single program. This means they cannot be indisputably classified as having any single behaviour.


Other versions

Aliases

Trojan.Win32.KillAV.bf (Kaspersky Lab) is also known as:

  • Trojan: ProcKill-BC (McAfee)
  • Troj/Killav-BF (Sophos)
  • Trojan.Killav.BF (ClamAV)
  • Trojan Horse (Panda)
  • W32/KillAV.F (FPROT)
  • Trojan:Win32/Killav.BF (MS(OneCare))
  • Trojan.AVKill.9216 (DrWeb)
  • Win32/KillAV.BF trojan (Nod32)
  • Trojan.Killav.BF (BitDef7)
  • Packed/FSG (VirusBuster)
  • Win32:Trojan-gen (AVAST)
  • Trojan.Win32.KillAV (Ikarus)
  • Generic.GAP (AVG)
  • TR/Killav.BF (AVIRA)
  • Trojan.Killav.C (NAV)
  • Suspicious_F.gen (Norman)
  • ProcKill-BC (NAI)
  • Trojan.KillAV.gq (Rising)