TR/Bagle.DD - Trojan

See also

Summary

Full description

Statistics

Virus:	TR/Bagle.DD
Date discovered:	22/09/2005
Type:	Trojan
In the wild:	Yes
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Medium
Static file:	Yes
File size:	35.388 Bytes
MD5 checksum:	9a224276a9eede6b85b2b3770e016f11
VDF version:	6.32.0.31

General Method of propagation:
   • No own spreading routine

Aliases:
   • Symantec: Trojan.Tooso.Q
   • Mcafee: W32/Bagle.gen
   • Kaspersky: Email-Worm.Win32.Bagle.dp
   • TrendMicro: TROJ_BAGLE.DA
   • Bitdefender: Win32.Bagle.DJ@mm

Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003

Side effects:
   • Disable security applications
   • Downloads a malicious file
   • Drops a malicious file
   • Lowers security settings
   • Registry modification

Files It copies itself to the following location:
   • %SYSDIR%\winshost.exe

It renames the following files:

    • CCSETMGR.EXE into C1CSETMGR.EXE
    • CCEVTMGR.EXE into CC1EVTMGR.EXE
    • NAVAPSVC.EXE into NAV1APSVC.EXE
    • NPFMNTOR.EXE into NPFM1NTOR.EXE
    • symlcsvc.exe into s1ymlcsvc.exe
    • SPBBCSvc.exe into SP1BBCSvc.exe
    • SNDSrvc.exe into SND1Srvc.exe
    • ccApp.exe into ccA1pp.exe
    • ccl30.dll into cc1l30.dll
    • ccvrtrst.dll into ccv1rtrst.dll
    • LUALL.EXE into LUAL1L.EXE
    • AUPDATE.EXE into AUPD1ATE.EXE
    • Luupdate.exe into Luup1date.exe
    • LUINSDLL.DLL into LUI1NSDLL.DLL
    • RuLaunch.exe into RuLa1unch.exe
    • CMGrdian.exe into CM1Grdian.exe
    • Mcshield.exe into Mcsh1ield.exe
    • outpost.exe into outp1ost.exe
    • Avconsol.exe into Avc1onsol.exe
    • Vshwin32.exe into Vshw1in32.exe
    • VsStat.exe into Vs1Stat.exe
    • Avsynmgr.exe into Av1synmgr.exe
    • kavmm.exe into kav12mm.exe
    • Up2Date.exe into Up222Date.exe
    • KAV.exe into K2A2V.exe
    • avgcc.exe into avgc3c.exe
    • avgemc.exe into avg23emc.exe
    • zonealarm.exe into zo3nealarm.exe
    • zatutor.exe into zatu6tor.exe
    • zlavscan.dll into zl5avscan.dll
    • zlclient.exe into zlcli6ent.exe
    • isafe.exe into is5a6fe.exe
    • cafix.exe into c6a5fix.exe
    • vsvault.dll into vs6va5ult.dll
    • av.dll into a5v.dll
    • vetredir.dll into ve6tre5dir.dll

The following file is created:

– %SYSDIR%\wiwshost.exe Further investigation pointed out that this file is malware, too. Detected as: TR.Bagle.DD.1

It tries to download some files:

– The locations are the following:
   • www.21eb**********ild.com\osa6.gif
   • www.51.n**********t\osa6.gif
   • www.acso**********io.com\osa6.gif
   • www.agri**********.hu\osa6.gif
   • www.andi**********com.vn\osa6.gif
   • www.angh**********m.de\osa6.gif
   • www.asco**********fibras.com\osa6.gif
   • www.auto**********obilonline.de\osa6.gif
   • www.bang**********an.cn\osa6.gif
   • www.beal**********-cpa.com\osa6.gif
   • www.bolz**********at\osa6.gif
   • www.bs-s**********curity.de\osa6.gif
   • www.cent**********ovestecasa.it\osa6.gif
   • www.chec**********onemedia.nl\osa6.gif
   • www.cont**********ntproject.com\osa6.gif
   • www.cz-w**********njia.com\osa6.gif
   • www.czwa**********qing.com\osa6.gif
   • www.czzm**********com\osa6.gif
   • www.data**********et.huwww.datanet.hu\osa6.gif
   • www.desi**********ngong.org\osa6.gif
   • www.dgy.**********om.cn\osa6.gif
   • www.die-**********liesen.de\osa6.gif
   • www.disc**********teka-funfactory.com\osa6.gif
   • www.dom-**********nvest.com.pl\osa6.gif
   • www.eagl**********.com.cn\osa6.gif
   • www.eagl**********club.com.cn\osa6.gif
   • www.ehc.**********u\osa6.gif
   • www.elvi**********-presley.ch\osa6.gif
   • www.enge**********hardtgmbh.de\osa6.gif
   • www.exte**********net.hu\osa6.gif
   • www.fahr**********chule-herb.de\osa6.gif
   • www.fahr**********chule-lesser.de\osa6.gif
   • www.ferm**********garoy.com\osa6.gif
   • www.fest**********valteatrooccidente.com\osa6.gif
   • www.form**********olz.at\osa6.gif
   • www.foto**********ax.fi\osa6.gif
   • www.gemt**********ox.com.tw\osa6.gif
   • www.gepe**********ers.org\osa6.gif
   • www.gime**********-messzeuge.de\osa6.gif
   • www.gomy**********ome.com.tw\osa6.gif
   • www.gymz**********.cz\osa6.gif
   • www.hond**********nservice.be\osa6.gif
   • www.idaf**********de\osa6.gif
   • www.idcs**********be\osa6.gif
   • www.ider**********cl\osa6.gif
   • www.insi**********e-tgweb.de\osa6.gif
   • www.izol**********.sk\osa6.gif
   • www.jcm-**********merican.com\osa6.gif
   • www.jeou**********hinn.com\osa6.gif
   • www.jing**********uok.com\osa6.gif
   • www.jue-**********o.com\osa6.gif
   • www.king**********ley.ch\osa6.gif
   • www.mark**********tvw.com\osa6.gif
   • www.mega**********erve.net\osa6.gif
   • www.mild**********at\osa6.gif
   • www.niko**********de\osa6.gif
   • www.niko**********mbh.com\osa6.gif
   • www.olva**********com.pe\osa6.gif
   • www.on24**********ee\osa6.gif
   • www.onli**********k.net\osa6.gif
   • www.ppm-**********lliance.de\osa6.gif
   • www.pres**********ey.ch\osa6.gif
   • www.rene**********aderc.com\osa6.gif
   • www.repl**********yu.com\osa6.gif
   • www.sach**********enbuecher.de\osa6.gif
   • www.sanj**********nyuan.com\osa6.gif
   • www.scva**********ravenswaaij.nl\osa6.gif
   • www.slov**********net.sk\osa6.gif
   • www.snsp**********oto.com\osa6.gif
   • www.soci**********taet.de\osa6.gif
   • www.soec**********.org\osa6.gif
   • www.soft**********ajor.ru\osa6.gif
   • www.solt**********.org\osa6.gif
   • www.spac**********um.biz\osa6.gif
   • www.spee**********com.home.pl\osa6.gif
   • www.spir**********t-in-steel.at\osa6.gif
   • www.spod**********n.de\osa6.gif
   • www.spor**********nf.com\osa6.gif
   • www.spy.**********z\osa6.gif
   • www.sqns**********lutions.com\osa6.gif
   • www.st-p**********ulus-bonn.dehtdocs\osa6.gif
   • www.stbs**********com.hk\osa6.gif
   • www.ster**********pharm.com\osa6.gif
   • www.stud**********nts.stir.ac.uk\osa6.gif
   • www.subs**********lanet.com\osa6.gif
   • www.sung**********dbio.com\osa6.gif
   • www.supe**********betcs.com\osa6.gif
   • www.sweb**********cz\osa6.gif
   • www.sydo**********o.com\osa6.gif
   • www.szdi**********eng.com\osa6.gif
   • www.tcic**********mpus.net\osa6.gif
   • www.tech**********i.com.cn\osa6.gif
   • www.tg-s**********ndhausen-basketball.de\osa6.gif
   • www.th-m**********tan.com\osa6.gif
   • www.thai**********ast.com\osa6.gif
   • www.thai**********enture.com\osa6.gif
   • www.thef**********nkiest.com\osa6.gif
   • www.then**********xtstep.tv\osa6.gif
   • www.thet**********xasoutfitter.com\osa6.gif
   • www.tmhc**********d1987.friko.pl\osa6.gif
   • www.tous**********ain.be\osa6.gif
   • www.trag**********.com.pt\osa6.gif
   • www.trav**********lourway.com\osa6.gif
   • www.trgd**********dobrcz.pl\osa6.gif
   • www.tria**********ex.cz\osa6.gif
   • www.trip**********onic.ch\osa6.gif
   • www.tv-m**********rina.com\osa6.gif
   • www.udc-**********assinadepecchi.it\osa6.gif
   • www.univ**********rse.sk\osa6.gif
   • www.uspo**********erchair.com\osa6.gif
   • www.uw.h**********\osa6.gif
   • www.verc**********uyssenelektro.be\osa6.gif
   • www.vet2**********h.com\osa6.gif
   • www.vini**********eloni.com\osa6.gif
   • www.vnn.**********n\osa6.gif
   • www.vnrv**********iet.ac.in\osa6.gif
   • www.vote**********fateh.com\osa6.gif
   • www.vw.p**********ess-bank.pl\osa6.gif
   • www.wamb**********.asn.au\osa6.gif
   • www.wdlp**********co.za\osa6.gif
   • www.welc**********corp.com\osa6.gif
   • www.wesa**********tproductions.com\osa6.gif
   • www.wils**********nscountry.com\osa6.gif
   • www.wind**********tar.pl\osa6.gif
   • www.wise**********industries.com\osa6.gif
   • www.wito**********d.pl\osa6.gif
   • www.womb**********and.com\osa6.gif
   • www.x-tr**********me.cz\osa6.gif
   • www.xian**********ong.net\osa6.gif
   • www.xmpi**********.com\osa6.gif
   • www.xmtd**********com\osa6.gif
   • www.xojc**********com\osa6.gif
   • www.yann**********ck-spruyt.be\osa6.gif
   • www.yaya**********ownload.com\osa6.gif
   • www.yest**********rdays.co.za\osa6.gif
   • www.yshk**********.com\osa6.gif
   • www.zaka**********cd.dp.ua\osa6.gif
   • www.zene**********oftware.com\osa6.gif
   • www.zent**********k.co.za\osa6.gif
   • www.zorb**********s.az\osa6.gif
   • www.zsbe**********sala.edu.sk\osa6.gif
It is saved on the local hard drive under: %WINDIR%\_re_file.exe Furthermore this file gets executed after it was fully downloaded. Further investigation pointed out that this file is malware, too. Detected as: TR/Bagle.DE.3.A

Registry The following registry keys are added in order to run the processes after reboot:

– [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "winshost.exe" = "%SYSDIR%\winshost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "winshost.exe" = "%SYSDIR%\winshost.exe"

The values of the following registry keys are removed:

– HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "McAfee.InstantUpdate.Monitor"

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "Zone Labs Client"
   • "avg7_emc"
   • "avg7_cc"
   • "KAV50"
   • "APVXDWIN"
   • "McAfee Guardian"
   • "SSC_UserPrompt"
   • "NAV CfgWiz"
   • "ccApp"
   • "Symantec NetDriver Monitor"

The following registry keys including all values and subkeys are removed:
   • [HKLM\SOFTWARE\Zone Labs]
   • [HKLM\SOFTWARE\Panda Software]
   • [HKLM\SOFTWARE\Agnitum]
   • [HKLM\SOFTWARE\KasperskyLab]
   • [HKLM\SOFTWARE\McAfee]
   • [HKLM\SOFTWARE\Symantec]

The following registry key is added:

– [HKCU\Software\FirstRun]
   • "FirstRunRR" = dword:00000001

Hosts The host file is modified as explained:

– In this case existing entries are deleted.

The modified host file will look like this:

Process termination List of processes that are terminated:
   • NUPGRADE.EXE; MCUPDATE.EXE; ATUPDATER.EXE; AUPDATE.EXE; AUTOTRACE.EXE;
      AUTOUPDATE.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; UPGRADER.EXE; AVXQUAR.EXE;
      AVWUPD32.EXE; AVPUPD.EXE; CFIAUDIT.EXE; UPDATE.EXE

List of services that are disabled:
   • wuauserv(Automatic updates)
   • SharedAccess(Windows Firewall/Internet Connection Sharing)
   • alerter

Injection – It injects itself as a remote thread into a process.

    Process name:
   • explorer.exe

   If the malware fails, it terminates itself.

File details Programming language:
The malware program was written in MS Visual C++.

Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

See a brief description here.

Description inserted by Iulian Popa on Tue, 27 Sep 2005 13:29 (GMT+1)
Description updated by Iulian Popa on Mon, 03 Oct 2005 14:38 (GMT+1)

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