Worm/Agent.YP.2 - Worm

See also

Summary

Full description

Statistics

Virus:	Worm/Agent.YP.2
Date discovered:	20/10/2005
Type:	Worm
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Medium
Damage Potential:	Low to medium
Static file:	Yes
File size:	52.224 Bytes
MD5 checksum:	7aae690f68fe78c6b7559d8e756af2dc
VDF version:	6.32.00.112 - Tue, 25 Oct 2005 11:52 (GMT+1)

General Methods of propagation:
   • Email
   • Peer to Peer

Aliases:
   • Kaspersky: Trojan-Dropper.Win32.Agent.yp
   • Bitdefender: Dropped:Trojan.Proxy.Daemonize.AW

Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows 2000
   • Windows XP

Side effects:
   • Blocks access to security websites
   • Uses its own Email engine
   • Lowers security settings
   • Registry modification

Right after execution the following information is displayed:

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

The following files are created:

– A file that is for temporary use and it might be deleted afterwards:
   • %TEMPDIR%\Me^sa~e#4%

– %SYSDIR%\hserv.sys
– %SYSDIR%\version.ini
– %SYSDIR%\netdx.dat
– %SYSDIR%\iexplor.dll Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: TR/Drop.Agent.YP.1

– %SYSDIR%\shlapiw.dll Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: TR/Proxy.Daemonize.AW.1

It tries to download some files:

– The locations are the following:
   • http://succes**********.org/com.txt
   • http://alumn**********.com/com.txt

Registry To each registry key one of the values is added in order to run the processes after reboot:

– HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   • "lsass"="%SYSDIR%\lsasrv.exe"

– HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
   • "Shell"="explorer.exe %SYSDIR%\lsasrv.exe"

The values of the following registry keys are removed:

– HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   • windows auto update
   • Microsoft Inet Xp..
   • System MScvb
   • PandaAVEngine
   • TaskMon

– HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   • Microsoft Inet Xp..
   • System MScvb
   • PandaAVEngine
   • TaskMon

The following registry key is changed:

Deactivate Windows XP Firewall:
– HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess
   Old value:
   • Start=%user defined settings%
   New value:
   • Start=dword:00000004

Email It contains an integrated SMTP engine in order to send emails. A direct connection with the destination server will be established. The characteristics are described in the following:

From:
The sender address is spoofed.

To:
– Email addresses found in specific files on the system.
– Email addresses gathered from WAB (Windows Address Book)

Subject:
One of the following:
   • Attention!!!
   • Do not reply to this email
   • Error
   • Good day
   • hello
   • Mail Delivery System
   • Mail Transaction Failed
   • Server Report
   • Status

Body:
The body of the email is one of the lines:
   • Mail transaction failed
   • Partial message is available.
   • The message contains Unicode characters and has been sent as a binary attachment.
   • The message cannot be represented in 7-bit ASCII encoding and has been sent as a binar attachment.
   • Do not visit these sites!!! You have visited illegal websites.
I have a big list of the websites you surfed.
   • You think it's funny? You are stupid idiot!!! I'll send the attachment to your ISP and then I'll be watching how you will go to jail, punk!!!
   • Your credit card was charged for $500 USD. For additional information see the attachment
   • ESMTP [Secure Mail System 334]: Secure message is attached.
   • Encrypted message is available.
   • Delivered message is attached.
   • Can you confirm it? Binary message is available.
   • am shocked about your document!
   • Are you a spammer? (I found your email on a spammer website!?!)
   • Bad Gateway: The message has been attached.
   • Here is your documents you are requested
The body of the email is one of the following:

   • Attention! Your IP was logged by The Internet Fraud Complaint Center

     Your IP was logged by The Internet Fraud Complaint Center. There was a fraud attempt logged by The Internet Fraud Complaint Center from your IP. This is a serious crime, so all records was sent to the FBI.
     All information you can find in the attachment. Your IP was flagged and if there will be anover attemption you will be busted.

     This message is brought to you by the Federal Bureau of Investigation and the National White Collar Crime Center

   • Attention! New self-spreading virus!

     Be careful, a new self-spreading virus called "RTSW.Smash" spreading very fast via e-mail and P2P networks. It's about two million people infected and it will be more.
     To avoid your infection by this virus and to stop it we provide you with full information how to protect yourself against it and also including free remover. Your can find it in the attachment.

      2004 Networks Associates Technology, Inc. All Rights Reserved

   • New terms and conditions for credit card holders

     Here a new terms and conditions for credit card holders using a credit cards for making purchase in the Internet in the attachment. Please, read it carefully. If you are not agree with new terms and conditions do not use your credit card in the World Wide Web.

     Thank you,
     The World Bank Group
     © 2004 The World Bank Group, All Rights Reserved

   • Thank you for registering at WORLDXXXPASS.COM

     All your payment info, login and password you can find in the attachment file.

     It's a real good choise to go to WORLDXXXPASS.COM

Attachment:
The filename of the attachment is constructed out of the following:

   • body
   • data
   • doc
   • docs
   • file
   • message
   • readme
   • rules
   • document

    The file extension is one of the following:
   • bat
   • cmd
   • exe
   • scr
   • pif

The email looks like the following:

Mailing Search addresses:
It searches the following files for email addresses:
   • adb; asa; asc; asm; asp; cgi; con; csp; dbx; dlt; dwt; edm; hta; htc;
      htm; inc; jsp; jst; lbi; php; pl; rdf; rss; sht; ssi; stm; tbb; tpl;
      txt; vb; vbs; wab; wml; xht; xml; xsd; xst

Address generation for TO and FROM fields:
To generate addresses it uses the following strings:
   • adam; alex; alice; andrew; anna; bill; bob; brenda; brent; brian;
      claudia; dan; dave; david; debby; fred; george; helen; jack; james;
      jane; jerry; jim; jimmy; joe; john; jose; julie; kevin; leo; linda;
      maria; mary; matt; michael; mike; peter; ray; robert; sam; sandra;
      serg; smith; stan; steve; ted; tom

It combines this with domains from the following list or from addresses found in files on the system

The domain is one of the following:
   • aol.com; avp.com; compuserve.com; earthlink.net; hotmail.com;
      juno.com; mcaffe.com; msn.com; nai.com; networkassociates.com;
      symantec.com; trendmicro.com; yahoo.co.uk; yahoo.com

Avoid addresses:
It does not send emails to addresses containing one of the following strings:
   • accoun; certific; listserv; ntivi; support; admin; help; page;
      the.bat; gold-certs; feste; submit; not; service; privacy; somebody;
      soft; contact; rating; bugs; me; you; your; someone; anyone; nothing;
      nobody; noone; webmaster; postmaster; samples; info; root; be_loyal;
      mozilla; utgers.ed; tanford.e; pgp; aske; mozilla; utgers.ed;
      tanford.e; pgp; asketst; secur; linux; kernel; google; ibm.com; fsf.;
      gnu; mit.e; bsd; math; unix; berkeley; foo.; .mil; gov.; .gov; ruslis;
      nodomai; mydomai; example; inpris; borlan; sopho; panda; icrosoft;
      syma; avp; abuse; spam; www; spm; .edu; -._!; -._!@

Prepend MX strings:
In order to get the IP address of the mail server it has the ability to prepend the following strings to the domain name:
   • gate.
   • ns.
   • relay.
   • mail1.
   • mxs.
   • mx1.
   • smtp.
   • mail.
   • mx.

P2P In order to infect other systems in the Peer to Peer network community the following action is performed:

–   It retrieves shared folders by querying the following registry keys:
   • HKCU\Software\iMesh\Client\DownloadsLocation
   • HKLM\SOFTWARE\Kazaa\Transfer
   • HKLM\SOFTWARE\Morpheus\Install_Dir

   It searches for the following standard shares:
   • My Shared Folder\
   • %PROGRAM FILES%\eDonkey2000\incoming
   • %PROGRAM FILES%\LimeWire\Shared

   If successful, the following files are created:
   • activation_crack
   • Ad-awareref01R344
   • adultsitespasswds
   • avpprokey
   • dcom_patch
   • icq2004-final
   • K-LiteCodecPack2.32a
   • NeroBROM6.3.1.25
   • porno
   • winamp5
   • winxp_sp2patch

   These files are copies of the malware itself.

Hosts The host file is modified as explained:

– In this case existing entries are deleted.

– Access to the following domains is effectively blocked:
   • www.symantec.com; securityresponse.symantec.com; symantec.com;
      www.sophos.com; sophos.com; www.mcafee.com; mcafee.com;
      liveupdate.symantecliveupdate.com; www.viruslist.com; viruslist.com;
      www.f-secure.com; f-secure.com; kaspersky.com; kaspersky-labs.com;
      www.avp.com; avp.com; www.kaspersky.com; www.networkassociates.com;
      networkassociates.com; www.ca.com; ca.com; mast.mcafee.com;
      www.my-etrust.com; my-etrust.com; download.mcafee.com;
      dispatch.mcafee.com; secure.nai.com; www.nai.com; nai.com;
      update.symantec.com; updates.symantec.com; us.mcafee.com;
      liveupdate.symantec.com; customer.symantec.com; rads.mcafee.com;
      www.trendmicro.com; trendmicro.com; www.grisoft.com; grisoft.com;
      downloads1.kaspersky.com; downloads2.kaspersky.com;
      ftp.downloads1.kaspersky-labs.com; ftp.downloads2.kaspersky-labs.com;
      updates1.kaspersky-labs.com; updates3.kaspersky-labs.com;
      updates2.kaspersky-labs.com

The modified host file will look like this:

Process termination List of processes that are terminated:
   • _avp32.exe; _avpcc.exe; _avpm.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; atcon.exe;
      atguard.exe; atro55en.exe; atupdater.exe; atwatch.exe; au.exe;
      aupdate.exe; autodown.exe; auto-protect.nav80try.exe; autotrace.exe;
      autoupdate.exe; avconsol.exe; ave32.exe; avgcc32.exe; avgctrl.exe;
      avgnt.exe; avgserv.exe; avgserv9.exe; avguard.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; avwin95.exe;
      avwinnt.exe; avwupd.exe; avwupd32.exe; avwupsrv.exe; avxmonitor9x.exe;
      avxmonitornt.exe; avxquar.exe; backweb.exe; bargains.exe;
      bd_professional.exe; beagle.exe; belt.exe; bidef.exe; bidserver.exe;
      bipcp.exe; bipcpevalsetup.exe; bisp.exe; blackd.exe; blackice.exe;
      blss.exe; bootconf.exe; bootwarn.exe; borg2.exe; bpc.exe; brasil.exe;
      bs120.exe; bundle.exe; bvt.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; emsw.exe; ent.exe; esafe.exe; escanh95.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-agobot.exe; fameh32.exe;
      fast.exe; fch32.exe; fih32.exe; findviru.exe; firewall.exe;
      flowprotector.exe; fnrb32.exe; fprot.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; gator.exe; gbmenu.exe;
      gbpoll.exe; generics.exe; gmt.exe; guard.exe; guarddog.exe;
      hacktracersetup.exe; hbinst.exe; hbsrv.exe; hijackthis.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;
      iexplorer.exe; iface.exe; ifw2000.exe; inetlnfo.exe; infus.exe;
      infwin.exe; init.exe; intdel.exe; intren.exe; iomon98.exe;
      iparmor.exe; iris.exe; isass.exe; isrv95.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; kernel32.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; mcshield.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;
      msconfig.exe; mscvb32.exe; msdm.exe; msdos.exe; msiexec16.exe;
      msinfo32.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;
      navengnavex15.navlu32.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;
      netstat.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;
      PandaAVEngine.exe; panixk.exe; patch.exe; pavcl.exe; pavproxy.exe;
      pavsched.exe; pavw.exe; pcc2002s902.exe; pcc2k_76_1436.exe;
      pcciomon.exe; pccntmon.exe; pccwin97.exe; pccwin98.exe; pcdsetup.exe;
      pcfwallicon.exe; pcip10117_0.exe; pcscan.exe; pdsetup.exe; penis.exe;
      Penis32.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; pussy.exe; pview95.exe; qconsole.exe;
      qserver.exe; rapapp.exe; rav7.exe; rav7win.exe; rav8win32eng.exe;
      ray.exe; rb32.exe; rcsync.exe; realmon.exe; reged.exe; regedit.exe;
      regedt32.exe; rescue.exe; rescue32.exe; rrguard.exe; rshell.exe;
      rtvscan.exe; rtvscn95.exe; rulaunch.exe; run32dll.exe; rundll.exe;
      rundll16.exe; ruxdll32.exe; safeweb.exe; sahagent.exe; save.exe;
      savenow.exe; sbserv.exe; sc.exe; scam32.exe; scan32.exe; scan95.exe;
      scanpm.exe; scrscan.exe; scrsvr.exe; scvhost.exe; sd.exe; serv95.exe;
      service.exe; servlce.exe; servlces.exe; setup_flowprotector_us.exe;
      setupvameeval.exe; sfc.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; symproxysvc.exe; symtray.exe;
      sysedit.exe; sysinfo.exe; system.exe; system32.exe; sysupd.exe;
      taskmg.exe; taskmo.exe; taskmon.exe; taumon.exe; tbscan.exe; tc.exe;
      tca.exe; tcm.exe; tds2-98.exe; tds2-nt.exe; tds-3.exe; teekids.exe;
      tfak.exe; tfak5.exe; tgbob.exe; titanin.exe; titaninxp.exe;
      tracert.exe; trickler.exe; trjscan.exe; trjsetup.exe; trojantrap3.exe;
      tsadbot.exe; tvmd.exe; tvtmd.exe; undoboot.exe; updat.exe; update.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;
      wgfe95.exe; whoswatchingme.exe; wimmun32.exe; win32.exe; win32us.exe;
      winactive.exe; win-bugsfix.exe; window.exe; windows.exe; wininetd.exe;
      wininit.exe; wininitx.exe; winlogin.exe; winmain.exe; winnet.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

Processes with one of the following strings are terminated:
   • bbeagle; d3dupdate; i11r54n4; irun4; msblast; mscvb32; navapw32;
      navw32; outpost; pandaavengine; penis32; rate; ssate; sysinfo; sysmon;
      taskmon; teekids; wincfg32; winsys; winupd; zapro; zonealarm

List of services that are disabled:
   • Windows Security Center service
   • Norton Program Scheduler
   • KAVMonitorService
   • OutpostFirewall

Injection – It injects the following file into a process: %SYSDIR%\iexplor.dll

    Process name:
   • iexplore.exe

– It injects the following file into a process: %SYSDIR%\shlapiw.dll

    Process name:
   • iexplore.exe

File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with the following runtime packer:
• UPX

See a brief description here.

Description inserted by Irina Boldea on Thu, 20 Oct 2005 15:45 (GMT+1)
Description updated by Irina Boldea on Thu, 27 Oct 2005 11:31 (GMT+1)

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