1. Symantec/
  2. Security Response/
  3. Trojan.Mitglieder.Q

Trojan.Mitglieder.Q

Risk Level 1: Very Low

Discovered:
June 12, 2005
Updated:
February 13, 2007 12:40:11 PM
Also Known As:
Win32.Mitglieder.CT [Computer , Trojan-Proxy.Win32.Mitglieder., W32/Bagle.gen [McAfee]
Type:
Trojan Horse
Systems Affected:
Windows

When Trojan.Mitglieder.Q is executed, it performs the following actions:
  1. Creates a copy of itself as %System%\wintems.exe.

    Note: %System% is a variable that refers to the System folder. By default this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

  2. Creates the following files:

    %System%\forõ.exe
    %System%\noat.exe

    Note: %System% is a variable that refers to the System folder. By default this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

  3. Adds the value:

    "ssgrate.exe" = "%System%\wintems.exe"

    to the registry subkey:

    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run

    so that the risk runs every time Windows starts.

  4. Creates the mutex named "zorro" so that only one instance of the worm is run on the compromised computer:

  5. The file wintems.exe injects the file noat.exe into the Explorer.exe process. The file noat.exe then loads the file forõ.exe, which contains the main functionality of the Trojan. This allows the Trojan to attempt to hide its activities as the legitimate Explorer.exe process.

  6. Stops the following services, and modifies their startup type to disabled:

    • SharedAccess
    • wscsvc

  7. Adds the values:

    "Uid" = "[Unique ID]"
    "Port" = "[Port Number]"
    "wdrn" = "1/0"


    to the registry subkey:

    HKEY_CURRENT_USER\Software\DateTime9

    to serve as infection markers.

  8. Attempts to open a back door on TCP port 38884 to serve as a proxy. This allows the attacker to perform the following actions:

    • Change the back door port number
    • Update the Trojan
    • Download and executes files
    • Uninstall the Trojan
    • Initiate an SMTP server on TCP port 25, which can be used to relay spam
    • Execute files on the compromised computer
    • Download and execute files via a URL

  9. Ends the following processes, some of which may be security related:

    • AGENTSVR.EXE
    • ANTI-TROJAN.EXE
    • ANTIVIRUS.EXE
    • ANTS.EXE
    • APIMONITOR.EXE
    • APLICA32.EXE
    • APVXDWIN.EXE
    • ATCON.EXE
    • ATGUARD.EXE
    • ATRO55EN.EXE
    • ATUPDATER.EXE
    • ATWATCH.EXE
    • AUPDATE.EXE
    • AUTODOWN.EXE
    • AUTOTRACE.EXE
    • AUTOUPDATE.EXE
    • AVCONSOL.EXE
    • AVGSERV9.EXE
    • AVLTMAIN.EXE
    • AVPUPD.EXE
    • AVSYNMGR.EXE
    • AVWUPD32.EXE
    • AVXQUAR.EXE
    • AVprotect9x.exe
    • BD_PROFESSIONAL.EXE
    • BIDEF.EXE
    • BIDSERVER.EXE
    • BIPCP.EXE
    • BIPCPEVALSETUP.EXE
    • BISP.EXE
    • BLACKD.EXE
    • BLACKICE.EXE
    • BOOTWARN.EXE
    • BORG2.EXE
    • BS120.EXE
    • CDP.EXE
    • CFGWIZ.EXE
    • CFIADMIN.EXE
    • CFIAUDIT.EXE
    • CFINET.EXE
    • CFINET32.EXE
    • CLEAN.EXE
    • CLEANER.EXE
    • CLEANER3.EXE
    • CLEANPC.EXE
    • CMGRDIAN.EXE
    • CMON016.EXE
    • CPD.EXE
    • CPF9X206.EXE
    • CPFNT206.EXE
    • CV.EXE
    • CWNB181.EXE
    • CWNTDWMO.EXE
    • DEFWATCH.EXE
    • DEPUTY.EXE
    • DPF.EXE
    • DPFSETUP.EXE
    • DRWATSON.EXE
    • DRWEBUPW.EXE
    • Drvddll.exe
    • ENT.EXE
    • ESCANH95.EXE
    • ESCANHNT.EXE
    • ESCANV95.EXE
    • EXANTIVIRUS-CNET.EXE
    • FAST.EXE
    • FIREWALL.EXE
    • FLOWPROTECTOR.EXE
    • FP-WIN_TRIAL.EXE
    • FRW.EXE
    • FSAV.EXE
    • FSAV530STBYB.EXE
    • FSAV530WTBYB.EXE
    • FSAV95.EXE
    • GBMENU.EXE
    • GBPOLL.EXE
    • GUARD.EXE
    • GUARDDOG.EXE
    • HACKTRACERSETUP.EXE
    • HTLOG.EXE
    • HWPE.EXE
    • IAMAPP.EXE
    • IAMSERV.EXE
    • ICLOAD95.EXE
    • ICLOADNT.EXE
    • ICMON.EXE
    • ICSSUPPNT.EXE
    • ICSUPP95.EXE
    • ICSUPPNT.EXE
    • IFW2000.EXE
    • IPARMOR.EXE
    • IRIS.EXE
    • JAMMER.EXE
    • KAVLITE40ENG.EXE
    • KAVPERS40ENG.EXE
    • KERIO-PF-213-EN-WIN.EXE
    • KERIO-WRL-421-EN-WIN.EXE
    • KERIO-WRP-421-EN-WIN.EXE
    • KILLPROCESSSETUP161.EXE
    • LDPRO.EXE
    • LOCALNET.EXE
    • LOCKDOWN.EXE
    • LOCKDOWN2000.EXE
    • LSETUP.EXE
    • LUALL.EXE
    • LUCOMSERVER.EXE
    • LUINIT.EXE
    • MCAGENT.EXE
    • MCUPDATE.EXE
    • MFW2EN.EXE
    • MFWENG3.02D30.EXE
    • MGUI.EXE
    • MINILOG.EXE
    • MOOLIVE.EXE
    • MRFLUX.EXE
    • MSCONFIG.EXE
    • MSINFO32.EXE
    • MSSMMC32.EXE
    • MU0311AD.EXE
    • NAV80TRY.EXE
    • NAVAPW32.EXE
    • NAVDX.EXE
    • NAVSTUB.EXE
    • NAVW32.EXE
    • NC2000.EXE
    • NCINST4.EXE
    • NDD32.EXE
    • NEOMONITOR.EXE
    • NETARMOR.EXE
    • NETINFO.EXE
    • NETMON.EXE
    • NETSCANPRO.EXE
    • NETSPYHUNTER-1.2.EXE
    • NETSTAT.EXE
    • NISSERV.EXE
    • NISUM.EXE
    • NMAIN.EXE
    • NORTON_INTERNET_SECU_3.0_407.EXE
    • NPF40_TW_98_NT_ME_2K.EXE
    • NPFMESSENGER.EXE
    • NPROTECT.EXE
    • NSCHED32.EXE
    • NTVDM.EXE
    • NUPGRADE.EXE
    • NVARCH16.EXE
    • NWINST4.EXE
    • NWTOOL16.EXE
    • OSTRONET.EXE
    • OUTPOST.EXE
    • OUTPOSTINSTALL.EXE
    • OUTPOSTPROINSTALL.EXE
    • PADMIN.EXE
    • PANIXK.EXE
    • PAVPROXY.EXE
    • PCC2002S902.EXE
    • PCC2K_76_1436.EXE
    • PCCIOMON.EXE
    • PCDSETUP.EXE
    • PCFWALLICON.EXE
    • PCIP10117_0.EXE
    • PDSETUP.EXE
    • PERISCOPE.EXE
    • PERSFW.EXE
    • PF2.EXE
    • PFWADMIN.EXE
    • PINGSCAN.EXE
    • PLATIN.EXE
    • POPROXY.EXE
    • POPSCAN.EXE
    • PORTDETECTIVE.EXE
    • PPINUPDT.EXE
    • PPTBC.EXE
    • PPVSTOP.EXE
    • PROCEXPLORERV1.0.EXE
    • PROPORT.EXE
    • PROTECTX.EXE
    • PSPF.EXE
    • PURGE.EXE
    • PVIEW95.EXE
    • QCONSOLE.EXE
    • QSERVER.EXE
    • RAV8WIN32ENG.EXE
    • REGEDIT.EXE
    • REGEDT32.EXE
    • RESCUE.EXE
    • RESCUE32.EXE
    • RRGUARD.EXE
    • RSHELL.EXE
    • RTVSCN95.EXE
    • RULAUNCH.EXE
    • SAFEWEB.EXE
    • SBSERV.EXE
    • SD.EXE
    • SETUPVAMEEVAL.EXE
    • SETUP_FLOWPROTECTOR_US.EXE
    • SFC.EXE
    • SGSSFW32.EXE
    • SH.EXE
    • SHELLSPYINSTALL.EXE
    • SHN.EXE
    • SMC.EXE
    • SOFI.EXE
    • SPF.EXE
    • SPHINX.EXE
    • SPYXX.EXE
    • SS3EDIT.EXE
    • ST2.EXE
    • SUPFTRL.EXE
    • SUPPORTER5.EXE
    • SYMPROXYSVC.EXE
    • SYSEDIT.EXE
    • TASKMON.EXE
    • TAUMON.EXE
    • TAUSCAN.EXE
    • TC.EXE
    • TCA.EXE
    • TCM.EXE
    • TDS-3.EXE
    • TDS2-98.EXE
    • TDS2-NT.EXE
    • TFAK5.EXE
    • TGBOB.EXE
    • TITANIN.EXE
    • TITANINXP.EXE
    • TRACERT.EXE
    • TRJSCAN.EXE
    • TRJSETUP.EXE
    • TROJANTRAP3.EXE
    • UNDOBOOT.EXE
    • UPDATE.EXE
    • VBCMSERV.EXE
    • VBCONS.EXE
    • VBUST.EXE
    • VBWIN9X.EXE
    • VBWINNTW.EXE
    • VCSETUP.EXE
    • VFSETUP.EXE
    • VIRUSMDPERSONALFIREWALL.EXE
    • VNLAN300.EXE
    • VNPC3000.EXE
    • VPC42.EXE
    • VPFW30S.EXE
    • VPTRAY.EXE
    • VSCENU6.02D30.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
    • WEBSCANX.EXE
    • WGFE95.EXE
    • WHOSWATCHINGME.EXE
    • WINRECON.EXE
    • WNT.EXE
    • WRADMIN.EXE
    • WRCTRL.EXE
    • WSBGATE.EXE
    • WYVERNWORKSFIREWALL.EXE
    • XPF202EN.EXE
    • ZAPRO.EXE
    • ZAPSETUP3001.EXE
    • ZATUTOR.EXE
    • ZAUINST.EXE
    • ZONALM2601.EXE
    • ZONEALARM.EXE
    • drvsys.exe

  10. Sends information to the remote attacker by contacting the following websites:

    • [http://]artesproduction.com/[REMOVED]/xxxx.php
    • [http://]avistrade.ru/prog/[REMOVED]/xxxx.php
    • [http://]bernlocher.de/[REMOVED]/xxxx.php
    • [http://]blackwidow.nsk.ru/[REMOVED]/xxxx.php
    • [http://]dabigbadboy.de/[REMOVED]/xxxx.php
    • [http://]die-cliquee.de/[REMOVED]/xxxx.php
    • [http://]egogo.ru/[REMOVED]/xxxx.php
    • [http://]gaz-service.ru/[REMOVED]/xxxx.php
    • [http://]gnet30.gamesnet.de/[REMOVED]/xxxx.php
    • [http://]hannes-wacker.de/[REMOVED]/xxxx.php
    • [http://]investexpo.ru/[REMOVED]/xxxx.php
    • [http://]komtel.spb.ru/[REMOVED]/xxxx.php
    • [http://]mc-figga.de/[REMOVED]/xxxx.php
    • [http://]mir-auto.ru/[REMOVED]/xxxx.php
    • [http://]mir-vesov.ru/[REMOVED]/xxxx.php
    • [http://]monomah-city.ru/[REMOVED]/xxxx.php
    • [http://]multi-gaming.com/[REMOVED]/xxxx.php
    • [http://]partiyazerna.1gb.ru/[REMOVED]/xxxx.php
    • [http://]plastikp.ru/[REMOVED]/xxxx.php
    • [http://]prizmapr.ru/[REMOVED]/xxxx.php
    • [http://]promco.ru/[REMOVED]/xxxx.php
    • [http://]pvcps.ru/[REMOVED]/xxxx.php
    • [http://]rdwufa.ru/[REMOVED]/xxxx.php
    • [http://]roszvetmet.com/[REMOVED]/xxxx.php
    • [http://]schiffsparty.de/[REMOVED]/xxxx.php
    • [http://]service6.valuehost.ru/[REMOVED]/xxxx.php
    • [http://]shop-of-innovations.de/[REMOVED]/xxxx.php
    • [http://]sound-cell.de/[REMOVED]/xxxx.php
    • [http://]st-agnes.de/[REMOVED]/xxxx.php
    • [http://]stroyindustry.ru/[REMOVED]/xxxx.php
    • [http://]tpoint.ru/[REMOVED]/xxxx.php
    • [http://]unbound.de/[REMOVED]/xxxx.php
    • [http://]vladzernoproduct.ru/[REMOVED]/xxxx.php
    • [http://]web298.server7.webplus24.de/[REMOVED]/xxxx.php
    • [http://]www.13tw22rigobert.de/[REMOVED]/xxxx.php
    • [http://]www.admlaw.ru/[REMOVED]/xxxx.php
    • [http://]www.deadlygames.de/[REMOVED]/xxxx.php
    • [http://]www.emil-zittau.de/[REMOVED]/xxxx.php
    • [http://]www.etype.hostingcity.net/[REMOVED]/xxxx.php
    • [http://]www.eurostretch.ru/[REMOVED]/xxxx.php
    • [http://]www.ferienwohnung-in-masuren.de/[REMOVED]/xxxx.php
    • [http://]www.gasterixx.de/[REMOVED]/xxxx.php
    • [http://]www.gay-traffic.de/[REMOVED]/xxxx.php
    • [http://]www.hhc-online.de/[REMOVED]/xxxx.php
    • [http://]www.komandor.ru/[REMOVED]/xxxx.php
    • [http://]www.levada.ru/[REMOVED]/xxxx.php
    • [http://]www.lowenbrau.ru/[REMOVED]/xxxx.php
    • [http://]www.metzgerei-gebhart.de/[REMOVED]/xxxx.php
    • [http://]www.mirage.ru/[REMOVED]/xxxx.php
    • [http://]www.ordendeslichts.de/[REMOVED]/xxxx.php
    • [http://]www.progame.de/[REMOVED]/xxxx.php
    • [http://]www.thomas-we.de/[REMOVED]/xxxx.php

  11. Downloads a list of IP addresses every hour from the following Web sites:

    • [http://]avistrade.ru/[REMOVED]/blst.php
    • [http://]comdat.de/[REMOVED]/blst.php
    • [http://]die-cliquee.de/[REMOVED]/blst.php
    • [http://]gaz-service.ru/[REMOVED]/blst.php
    • [http://]mir-vesov.ru/[REMOVED]/blst.php
    • [http://]monomah-city.ru/[REMOVED]/blst.php
    • [http://]partiyazerna.1gb.ru/[REMOVED]/blst.php
    • [http://]prizmapr.ru/[REMOVED]/blst.php
    • [http://]promco.ru/[REMOVED]/blst.php
    • [http://]pvcps.ru/[REMOVED]/blst.php
    • [http://]rdwufa.ru/[REMOVED]/blst.php
    • [http://]service6.valuehost.ru/[REMOVED]/blst.php
    • [http://]www.13tw22rigobert.de/[REMOVED]/blst.php
    • [http://]www.lowenbrau.ru/[REMOVED]/blst.php
    • [http://]www.psnr.ru/rus/[REMOVED]/blst.php
    • [http://]www.thomas-we.de/[REMOVED]/blst.php

      Note: The list is saved to the file %System%\ban_list.txt. This file is used to filter connections made to the backdoor.


Recommendations

Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

  • Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
  • Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
  • Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
  • Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
  • Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
  • Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
  • If a threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
  • Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services.
  • Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
  • Isolate compromised computers quickly to prevent threats from spreading further. Perform a forensic analysis and restore the computers using trusted media.
  • Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
  • If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.
  • For further information on the terms used in this document, please refer to the Security Response glossary.
Writeup By: Rodney Andres
Summary| Technical Details| Removal

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