Threat Description

Email-Worm:​W32/Bagle.HR

Details

Aliases:Trojan-Downloader.Win32.Bagle.dr, Email-Worm.Win32.Bagle.dr
Category:Malware
Type:Email-WormTrojan-Downloader
Platform:W32

Summary



This type of worm is embedded in an e-mail attachment, and spreads using the infected computer's e-mailing networks.



Removal


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

You may wish to refer to the Support Community for further assistance. You also may also refer to General Removal Instructions for a general guide on alternative disinfection actions.

Eliminating a Local Network Outbreak

If the infection is in a local network, please follow the instructions on this webpage:

Manual Disinfection

Manual disinfection of Bagle consists of the following steps:

  • Delete the registry value [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d3dupdate.exe] and restart the computer

OR

  • Terminate the running 'bbeagle.exe' process with Task Manager
  • Then delete the worm's executable file from the Windows System Directory (%SysDir%\bbeagle.exe).

Remote Removal

F-Secure can confirm that the remote removal method found by Joe Stewart of Lurhq does indeed work (please note that the usage of this method against someone else's computers may be legally questionable).

Sending a specific byte sequence to port 6777 on the infected computers causes the worm to delete itself from the System Directory and terminate its process. The registry values are not removed but since the file does not exist Windows will ignore those.

The byte sequence to be sent:

  • 0x43 0xff 0xff 0xff 0x00 0x00 0x00 0x00 0x04 0x31 0x32 0x00


Technical Details



Email-Worm:W32/Bagle.HR differs from previous Bagle variants in that it is itself capable of functioning as a trojan-downloader, rather than depending on a separate trojan-downloader program.

In addition, the worm uses rootkit technology to disguise its presence on the computer.

Execution

Upon executing for the first time, Bagle.HR it shows the following dialog box as a decoy:

It will display the same message regardless of the file chosen.

In order to check itself for first execution, Bagle.HR checks the following registry entry:

  • HKEY_CURRENT_USER\Software\FirstRRRun FirstRR23232Run = dword:00000001

If the said registry entry is available it will no longer show the dialog box.

Bagle.HR drops copies of itself in the following path and filename:

  • %Local AppData folder%\hidires\flec003.exe
  • %Local AppData folder%\hidires\hidr.exe

It also drops the following rootkit driver to hide its malicious activities:

  • %Local AppData folder%\hidires\m_hook.sys

To enable automatic execution upon boot, it adds the following auto start entry but waits for 300000 ms before adding it:

  • HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run drvsyskit = %Local AppData folder%\hidires\hidr.exe

It also adds its rootkit driver component as a service by adding the following changes to the registry:

  • HKLM\SYSTEM\CurrentControlSet\Services\m_hook Type = dword:00000001 Start = dword:00000004 DisplayName = "Empty" ImagePath = %Local Application Data Folder%\hidires\m_hook.sys

Bagle.HR deletes the following key in order to prevent the user from booting into safe mode:

  • HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot

Activity

Bagle.HR downloads other malware from the following links:

  • http://5050clothing.com/mu[REMOVED].php
  • http://axelero.hu/mu[REMOVED].php
  • http://calamarco.com/mu[REMOVED].php
  • http://charlesspaans.com/mu[REMOVED].php
  • http://chatsk.wz.cz/mu[REMOVED].php
  • http://checkalertusa.com/mu[REMOVED].php
  • http://cibernegocios.com.ar/mu[REMOVED].php
  • http://cof666.shockonline.net/mu[REMOVED].php
  • http://comaxtechnologies.net/mu[REMOVED].php
  • http://concellodesandias.com/mu[REMOVED].php
  • http://dev.jintek.com/mu[REMOVED].php
  • http://dogoodesign.ch/mu[REMOVED].php
  • http://donchef.com/mu[REMOVED].php
  • http://erich-kaestner-schule-donaueschingen.de/mu[REMOVED].php
  • http://foxvcoin.com/mu[REMOVED].php
  • http://grupdogus.de/mu[REMOVED].php
  • http://hotchillishop.de/mu[REMOVED].php
  • http://ilikesimple.com/mu[REMOVED].php
  • http://innovation.ojom.net/mu[REMOVED].php
  • http://kisalfold.com/mu[REMOVED].php
  • http://knickimbit.de/mu[REMOVED].php
  • http://kremz.ru/mu[REMOVED].php
  • http://massgroup.de/mu[REMOVED].php
  • http://poliklinika-vajnorska.sk/mu[REMOVED].php
  • http://svatba.viskot.cz/mu[REMOVED].php
  • http://systemforex.de/mu[REMOVED].php
  • http://uwua132.org/mu[REMOVED].php
  • http://v-v-kopretiny.ic.cz/mu[REMOVED].php
  • http://vanvakfi.com/mu[REMOVED].php
  • http://vega-sps.com/mu[REMOVED].php
  • http://vidus.ru/mu[REMOVED].php
  • http://viralstrategies.com/mu[REMOVED].php
  • http://Vivamodelhobby.com/mu[REMOVED].php
  • http://vkinfotech.com/mu[REMOVED].php
  • http://vproinc.com/mu[REMOVED].php
  • http://vytukas.com/mu[REMOVED].php
  • http://waisenhaus-kenya.ch/mu[REMOVED].php
  • http://watsrisuphan.org/mu[REMOVED].php
  • http://wbecanada.com/mu[REMOVED].php
  • http://web-comp.hu/mu[REMOVED].php
  • http://webfull.com/mu[REMOVED].php
  • http://welvo.com/mu[REMOVED].php
  • http://wvpilots.org/mu[REMOVED].php
  • http://www.ag.ohio-state.edu/mu[REMOVED].php
  • http://www.ag.ohio-state.edu/mu[REMOVED].php
  • http://www.chapisteriadaniel.com/mu[REMOVED].php
  • http://www.chittychat.com/mu[REMOVED].php
  • http://www.cort.ru/mu[REMOVED].php
  • http://www.crfj.com/mu[REMOVED].php
  • http://www.kersten.de/mu[REMOVED].php
  • http://www.kljbwadersloh.de/mu[REMOVED].php
  • http://www.voov.de/mu[REMOVED].php
  • http://www.walsch.de/mu[REMOVED].php
  • http://www.wchat.cz/mu[REMOVED].php
  • http://www.wg-aufbau-bautzen.de/mu[REMOVED].php
  • http://www.wzhuate.com/mu[REMOVED].php
  • http://xotravel.ru/mu[REMOVED].php
  • http://yeniguntugla.com/mu[REMOVED].php
  • http://zebrachina.net/mu[REMOVED].php
  • http://zsnabreznaknm.sk/mu[REMOVED].php

The rootkit driver terminates and deletes the following files that are related to antivirus software:

  • _AVP32.EXE
  • _AVPCC.EXE
  • _AVPM.EXE
  • a2guard.exe
  • aavshield.exe
  • AckWin32.exe
  • ADVCHK.EXE
  • AhnSD.exe
  • airdefense.exe
  • ALERTSVC.EXE
  • ALMon.exe
  • ALOGSERV.EXE
  • ALsvc.exe
  • amon.exe
  • Anti-Trojan.exe
  • AntiVirScheduler
  • AntiVirService
  • ANTS.EXE
  • APVXDWIN.EXE
  • Armor2net.exe
  • ashAvast.exe
  • ashDisp.exe
  • ashEnhcd.exe
  • ashMaiSv.exe
  • ashPopWz.exe
  • ashServ.exe
  • ashSimpl.exe
  • ashSkPck.exe
  • ashWebSv.exe
  • aswUpdSv.exe
  • ATCON.EXE
  • ATUPDATER.EXE
  • ATWATCH.EXE
  • AUPDATE.EXE
  • AUTODOWN.EXE
  • AUTOTRACE.EXE
  • AUTOUPDATE.EXE
  • avciman.exe
  • Avconsol.exe
  • AVENGINE.EXE
  • avgamsvr.exe
  • avgcc.exe
  • AVGCC32.EXE
  • AVGCTRL.EXE
  • avgemc.exe
  • avgfwsrv.exe
  • AVGNT.EXE
  • avgntdd
  • avgntmgr
  • AVGSERV.EXE
  • AVGUARD.EXE
  • avgupsvc.exe
  • avinitnt.exe
  • AvkServ.exe
  • AVKService.exe
  • AVKWCtl.exe
  • AVP.EXE
  • AVP32.EXE
  • avpcc.exe
  • avpm.exe
  • AVPUPD.EXE
  • AVSCHED32.EXE
  • avsynmgr.exe
  • AVWUPD32.EXE
  • AVWUPSRV.EXE
  • AVXMONITOR9X.EXE
  • AVXMONITORNT.EXE
  • AVXQUAR.EXE
  • BackWeb-4476822.exe
  • bdmcon.exe
  • bdnews.exe
  • bdoesrv.exe
  • bdss.exe
  • bdsubmit.exe
  • bdswitch.exe
  • blackd.exe
  • blackice.exe
  • cafix.exe
  • ccApp.exe
  • ccEvtMgr.exe
  • ccProxy.exe
  • ccSetMgr.exe
  • CFIAUDIT.EXE
  • ClamTray.exe
  • ClamWin.exe
  • Claw95.exe
  • Claw95cf.exe
  • cleaner.exe
  • cleaner3.exe
  • CliSvc.exe
  • CMGrdian.exe
  • cpd.exe
  • DefWatch.exe
  • DOORS.EXE
  • DrVirus.exe
  • drwadins.exe
  • drweb32w.exe
  • drwebscd.exe
  • DRWEBUPW.EXE
  • ESCANH95.EXE
  • ESCANHNT.EXE
  • ewidoctrl.exe
  • EzAntivirusRegistrationCheck.exe
  • F-AGNT95.EXE
  • F-PROT95.EXE
  • F-Sched.exe
  • F-StopW.EXE
  • FAMEH32.EXE
  • FAST.EXE
  • FCH32.EXE
  • FireSvc.exe
  • FireTray.exe
  • FIREWALL.EXE
  • fpavupdm.exe
  • freshclam.exe
  • FRW.EXE
  • fsav32.exe
  • fsavgui.exe
  • fsbwsys.exe
  • fsdfwd.exe
  • FSGK32.EXE
  • fsgk32st.exe
  • fsguiexe.exe
  • FSM32.EXE
  • FSMA32.EXE
  • FSMB32.EXE
  • fspex.exe
  • fssm32.exe
  • gcasDtServ.exe
  • gcasServ.exe
  • GIANTAntiSpywareMain.exe
  • GIANTAntiSpywareUpdater.exe
  • GUARD.EXE
  • GUARDGUI.EXE
  • GuardNT.exe
  • HRegMon.exe
  • Hrres.exe
  • HSockPE.exe
  • HUpdate.EXE
  • iamapp.exe
  • iamserv.exe
  • ICLOAD95.EXE
  • ICLOADNT.EXE
  • ICMON.EXE
  • ICSSUPPNT.EXE
  • ICSUPP95.EXE
  • ICSUPPNT.EXE
  • IFACE.EXE
  • INETUPD.EXE
  • InocIT.exe
  • InoRpc.exe
  • InoRT.exe
  • InoTask.exe
  • InoUpTNG.exe
  • IOMON98.EXE
  • isafe.exe
  • ISATRAY.EXE
  • ISRV95.EXE
  • ISSVC.exe
  • JEDI.EXE
  • KAV.exe
  • kavmm.exe
  • KAVPF.exe
  • KavPFW.exe
  • KAVStart.exe
  • KAVSvc.exe
  • KAVSvcUI.EXE
  • KMailMon.EXE
  • KPfwSvc.EXE
  • KWatch.EXE
  • livesrv.exe
  • LOCKDOWN2000.EXE
  • LogWatNT.exe
  • lpfw.exe
  • LUALL.EXE
  • LUCOMSERVER.EXE
  • Luupdate.exe
  • MCAGENT.EXE
  • mcmnhdlr.exe
  • mcregwiz.exe
  • Mcshield.exe
  • MCUPDATE.EXE
  • mcvsshld.exe
  • MINILOG.EXE
  • MONITOR.EXE
  • MonSysNT.exe
  • MOOLIVE.EXE
  • MpEng.exe
  • mpssvc.exe
  • MSMPSVC.exe
  • myAgtSvc.exe
  • myagttry.exe
  • navapsvc.exe
  • NAVAPW32.EXE
  • NavLu32.exe
  • NAVW32.EXE
  • NDD32.EXE
  • NeoWatchLog.exe
  • NeoWatchTray.exe
  • NISSERV
  • NISUM.EXE
  • NMAIN.EXE
  • nod32.exe
  • nod32krn.exe
  • nod32kui.exe
  • NORMIST.EXE
  • notstart.exe
  • npavtray.exe
  • NPFMNTOR.EXE
  • npfmsg.exe
  • NPROTECT.EXE
  • NSCHED32.EXE
  • NSMdtr.exe
  • NssServ.exe
  • NssTray.exe
  • ntrtscan.exe
  • NTXconfig.exe
  • NUPGRADE.EXE
  • NVC95.EXE
  • Nvcod.exe
  • Nvcte.exe
  • Nvcut.exe
  • NWService.exe
  • OfcPfwSvc.exe
  • OUTPOST.EXE
  • PAV.EXE
  • PavFires.exe
  • PavFnSvr.exe
  • Pavkre.exe
  • PavProt.exe
  • pavProxy.exe
  • pavprsrv.exe
  • pavsrv51.exe
  • PAVSS.EXE
  • pccguide.exe
  • PCCIOMON.EXE
  • pccntmon.exe
  • PCCPFW.exe
  • PcCtlCom.exe
  • PCTAV.exe
  • PERSFW.EXE
  • pertsk.exe
  • PERVAC.EXE
  • PNMSRV.EXE
  • POP3TRAP.EXE
  • POPROXY.EXE
  • prevsrv.exe
  • PsImSvc.exe
  • QHM32.EXE
  • QHONLINE.EXE
  • QHONSVC.EXE
  • QHPF.EXE
  • qhwscsvc.exe
  • RavMon.exe
  • RavTimer.exe
  • Realmon.exe
  • REALMON95.EXE
  • Rescue.exe
  • rfwmain.exe
  • Rtvscan.exe
  • RTVSCN95.EXE
  • RuLaunch.exe
  • SAVAdminService.exe
  • SAVMain.exe
  • savprogress.exe
  • SAVScan.exe
  • SCAN32.EXE
  • ScanningProcess.exe
  • sched.exe
  • sdhelp.exe
  • SERVIC~1.EXE
  • SHSTAT.EXE
  • SiteCli.exe
  • smc.exe
  • SNDSrvc.exe
  • SPBBCSvc.exe
  • SPHINX.EXE
  • spiderml.exe
  • spidernt.exe
  • Spiderui.exe
  • SpybotSD.exe
  • SPYXX.EXE
  • SS3EDIT.EXE
  • stopsignav.exe
  • swAgent.exe
  • swdoctor.exe
  • SWNETSUP.EXE
  • symlcsvc.exe
  • SymProxySvc.exe
  • SymSPort.exe
  • SymWSC.exe
  • SYNMGR.EXE
  • TAUMON.EXE
  • TBMon.exe
  • TC.EXE
  • tca.exe
  • TCM.EXE
  • TDS-3.EXE
  • TeaTimer.exe
  • TFAK.EXE
  • THAV.EXE
  • THSM.EXE
  • Tmas.exe
  • tmlisten.exe
  • Tmntsrv.exe
  • TmPfw.exe
  • tmproxy.exe
  • TNBUtil.exe
  • TRJSCAN.EXE
  • Up2Date.exe
  • UPDATE.EXE
  • UpdaterUI.exe
  • upgrepl.exe
  • Vba32ECM.exe
  • Vba32ifs.exe
  • vba32ldr.exe
  • Vba32PP3.exe
  • VBSNTW.exe
  • vchk.exe
  • vcrmon.exe
  • VetTray.exe
  • VirusKeeper.exe
  • VPTRAY.EXE
  • vrfwsvc.exe
  • VRMONNT.EXE
  • vrmonsvc.exe
  • vrrw32.exe
  • VSECOMR.EXE
  • Vshwin32.exe
  • vsmon.exe
  • vsserv.exe
  • VsStat.exe
  • WATCHDOG.EXE
  • WebProxy.exe
  • Webscanx.exe
  • WEBTRAP.EXE
  • WGFE95.EXE
  • Winaw32.exe
  • winroute.exe
  • winss.exe
  • winssnotify.exe
  • WRADMIN.EXE
  • WRCTRL.EXE
  • xcommsvr.exe
  • zatutor.exe
  • ZAUINST.EXE
  • zlclient.exe
  • zonealarm.exe





SUBMIT A SAMPLE

Suspect a file or URL was wrongly detected? Submit a sample to our Labs for analysis

Submit Now

Give And Get Advice

Give advice. Get advice. Share the knowledge on our free discussion forum.

Learn More