Virus:Worm/Mytob.KU
Date discovered:16/10/2005
Type:Worm
In the wild:Yes
Reported Infections:Low
Distribution Potential:Medium to high
Damage Potential:Medium
Static file:Yes
File size:44.032 Bytes
MD5 checksum:681c76891f755ce893930C5afb670840
VDF version:6.32.00.89

 General Method of propagation:
   • Email
   • Local network
   • Peer to Peer


Aliases:
   •  Kaspersky: Email-Worm.Win32.Fanbot.j
   •  TrendMicro: WORM_FANBOT.C
   •  Sophos: W32/Fanbot-H
   •  Grisoft: I-Worm/Mytob.M
   •  Bitdefender: Win32.Fanbot.J@mm


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


Side effects:
   • Blocks access to security websites
   • Disable security applications
   • Lowers security settings
   • Registry modification
   • Makes use of software vulnerability
   • Steals information


Right after execution the following information is displayed:


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



It deletes the initially executed copy of itself.

 Registry The following registry keys are added in order to load the service after reboot:

– HKLM\SYSTEM\CurrentControlSet\Services\RpcRemotes
   • "Type"=dword:00000010
   • "Start"=dword:00000002
   • "ErrorControl"=dword:00000001
   • "ImagePath"="%SYSDIR%\remote.exe"
   • "DisplayName"="Remote Procedure Call (RPC) Remote"
   • "ObjectName"="LocalSystem"
   • "Description"="Manages the RPC name service database."



The following registry key is added:

– HKLM\Software\Microsoft\Windows\CurrentVersion\Setup
   • "Ph4nt0m" = "Ph4nt0m"



The following registry keys are changed:

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

– HKLM\SYSTEM\CurrentControlSet\Services\wuauserv
   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.
Generated addresses. Please do not assume that it was the sender's intention to send this email to you. He might not know about his infection or might not even be infected at all. Furthermore it is possible that you will receive bounced emails telling you that you are infected. This might also not be the case.


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


Subject:
One of the following:
   • *DETECTED* Online User Violation.
   • Email Account Suspension.
   • Hello. Were Skype and weve got something we would like to share with you.
   • Important Notification!
   • Members Support.
   • Notice of account limitation.
   • Security measures.
   • Share Skype.
   • Skype for Windows 1.4 - Have you got the new Skype?
   • Warning Message: Your services near to be closed.
   • What is Skype?
   • Your Account is Suspended For Security Reasons.
   • Your Account is Suspended.



Body:
The body of the email is one of the following:

   • Dear user %username from receiver's email address% ,
     It has come to our attention that your %sender's domain name from email address% User Profile ( x ) records are out of date. For further details see the attached document.
     Thank you for using %sender's domain name from email address% !
     The %sender's domain name from email address% Support Team
     
     +++ Attachment: No Virus (Clean)
     +++ %sender's domain name from email address% Antivirus - www.%sender's domain name from email address%

   • Dear%receiver's domain name from email address% Member,
     Your e-mail account was used to send a huge amount of unsolicited spam messages during the recent week. If you could please take 5-10 minutes out of your online experience and confirm the attached document so you will not run into any future problems with the online service.
     
     If you choose to ignore our request, you leave us no choice but to cancel your membership.
     Virtually yours,
     The %sender's domain name from email address% Support Team
     
     +++ Attachment: No Virus found
     +++%sender's domain name from email address% Antivirus - www.%sender's domain name from email address%

   • Dear %receiver's domain name from email address% Member,
     We have temporarily suspended your email account %receiver's email address%
     This might be due to either of the following reasons:
     1. A recent change in your personal information (i.e. change of address).
     2. Submiting invalid information during the initial sign up process.
     3. An innability to accurately verify your selected option of subscription due to an internal error within our processors.
     See the details to reactivate your %receiver's domain name from email address% account.
     Sincerely,The %sender's domain name from email address% Support Team
     
     +++ Attachment: No Virus (Clean)
     +++ %sender's domain name from email address% Antivirus - www.%sender's domain name from email address%

   • Dear user %username from receiver's email address% ,
     You have successfully updated the password of your %receiver's domain name from email address% account.
     If you did not authorize this change or if you need assistance with your account, please contact %sender's domain name from email address% customer service at: %sender's email address%
     Thank you for using%sender's domain name from email address%!
     The %sender's domain name from email address% Support Team
     
     +++ Attachment: No Virus (Clean)
     +++ %sender's domain name from email address% Antivirus - www.%sender's domain name from email address%

   • Dear user %username from receiver's email address%,
     Skype is a little piece of software that lets you talk over the Internet to anyone, anywhere for free.
     And it just got even better ¡ª download the latest version of Skype:
     Our call quality is the best ever for talking, laughing and sharing stories.
     You can forward calls on to mobiles, landlines and other Skype Names.
     Make calls instantly from Outlook email or Internet Explorer with our new toolbars.
     Personalise your Skype ¡ª play around with sounds, ringtones and pictures to show the world who you are.
     For further details see the attached document.
     
     This message contains graphics. If you do not see the graphics, click here to view.
     Legal information


Attachment:
The filename of the attachment is one of the following:
   • account-details.zip
   • account-info.zip
   • account-report.zip
   • document.zip
   • email-details.zip
   • important-details.zip
   • readme.zip
   • Share Skype.zip
   • Skype for Windows 1.4.zip
   • Skype.zip
   • Skype-details.zip
   • Skype-document.zip
   • Skype-info.zip
   • Skype-stuffs.zip

The attachment is a copy of the malware itself.



The email may look like one of the following:



 Mailing Search addresses:
It searches the following files for email addresses:
   • adb; asp; cfg; cgi; dbx; ht; htm; html; jsp; mdb; msg; php; sht; tbb;
      txt; vbe; vbs; xml


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



Address generation for FROM field:
To generate addresses it uses the following strings:
   • noreply
   • webmaster
   • register
   • info
   • admin
   • service
   • mail
   • administrator
   • support



Avoid addresses:
It does not send emails to addresses containing one of the following strings:
   • -._!; -._!@; .edu; .gov; .mil; abuse; accoun; acketst; admin; ahn;
      antivi; anyone; arin.; avp; be_loyal:; berkeley; borlan; bsd; bugs;
      certific; contact; duba; example; fbi; fcnz; feste; fido; foo.; f-pro;
      freeav; f-secur; fsf.; gnu; gold-certs; google; gov.; help; hotmail;
      iana; ibm.com; icrosof; icrosoft; ietf; info; inpris; isc.o; isi.e;
      jiangmin; kaspersky; kernel; linux; listserv; master; math; mcafee;
      messagelabs; mit.e; mozilla; msn.; mydomai; nobody; nodomai; noone;
      norman; norton; not; nothing; ntivi; page; panda; pgp; postmaster;
      privacy; rating; rfc-ed; ripe.; rising; root; ruslis; samples; sdbot;
      secur; sendmail; service; site; slashdot; soft; somebody; someone;
      sopho; sourceforge; spm; submit; support; syma; symantec; tanford.e;
      the.bat; unix; usenet; utgers.ed; viruslis; webmaster; www; you; your


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:
   • mx.
   • mail.
   • smtp.
   • mx1.
   • mxs.
   • mail1.
   • relay.
   • ns.
   • gate.

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


–   It searches for directories that contain one of the following substrings:
   • bear
   • donkey
   • download
   • htdocs
   • icq
   • incoming
   • kazaa
   • lime
   • morpheus
   • mule
   • share
   • sharing
   • soft
   • upload

   If successful, the following files are created:
   • Copies itself with the names; XXX hardcore pics.jpg.exe; WinXP eBook
      newest.doc.exe; Windows XP crack.exe; Windows 2003 crack.exe; Windows
      2000 Sourcecode.doc.exe; WinAmp 13 full.exe; Win Longhorn re.exe; Win
      Longhorn.doc.exe; Winxp_Crack.exe; Winamp5.exe; Visual Studio Net
      Crack all.exe; virii.scr; Ulead Keygen 2004.exe; UltraEdit-32 12.01 +
      Cracker.exe; The Sims 4 beta.exe; Teen Porn 15.jpg.pif; TouchNet
      Browser 1.29b.exe; Star Office 9.exe; Smashing the stack full.rtf.exe;
      Serials edition.txt.exe; Screensaver2.scr; Saddam Hussein.jpg.exe;
      Serials 2005_New.exe; Strip-Girl-2.0b.exe; Super Dollfie.pif;
      strippoker.exe; Serial.txt.exe; Ringtones.mp3.exe; Ringtones.doc.exe;
      RFC compilation.doc.exe; RealPlayer_New.exe; rfc compilation.doc.exe;
      Rain.scr; Porno Screensaver britney.scr; Partitionsmagic 10 beta.exe;
      programming basics.doc.exe; porno.scr; Opera 11.exe; Office_Crack.exe;
      Norton Antivirus 2005 beta.exe; netsky source code.scr; nuke2004.exe;
      MS Service Pack 6.exe; Microsoft WinXP Crack full.exe; Microsoft
      Office 2003 Crack best.exe; Matrix.mpg.exe; Magix Video Deluxe 5
      beta.exe; max payne 2.crack.exe; Maxthon_New.exe; MSN7-final.exe;
      matrix.scr; Lightwave 9 Update.exe; Learn Programming 2004.doc.exe;
      Keygen 4 all new.exe; Kazaa new.exe; Kazaa Lite 4.0 new.exe;
      Kula.jpg.pif; Kula.scr; 'K.jpg.pif; Internet Explorer 9 setup.exe;
      icq2005-final.exe; How to hack new.doc.exe; Harry Potter.doc.exe;
      Harry Potter game.exe; Harry Potter e book.doc.exe; Harry Potter all
      e.book.doc.exe; Harry Potter 5.mpg.exe; Harry Potter 1-6 book.txt.exe;
      how to hack.doc.exe; Gimp 1.8 Full with Key.exe; Full album
      all.mp3.pif; firefox-1.6a1.en-US.win32.installer.exe; Eminem.mp3.exe;
      Eminem Spears porn.jpg.exe; Eminem Song text archive.doc.exe; Eminem
      Sexy archive.doc.exe; Eminem sex xxx.jpg.exe; Eminem Poster.jpg.exe;
      Eminem full album.mp3.exe; Eminem blowjob.jpg.exe; E-Book
      Archive2.rtf.exe; eminem - lick my pussy.mp3.pif;
      e-book.archive.doc.exe; e.book.doc.exe; Doom 3 release 2.exe; DivX 8.0
      final.exe; Dictionary English 2004 - France.doc.exe; Dark Angels
      new.pif; dolly_buster.jpg.pif; dictionary.doc.exe; dcom_patches.exe;
      doom2.doc.pif; Cracks & Warez Archiv.exe; Cloning.doc.exe; Clone DVD
      6.exe; cool screensaver.scr; Britney Spears.mp3.exe; Britney
      Spears.jpg.exe; Britney Spears Song text archive.doc.exe; Britney
      Spears Sexy archive.doc.exe; Britney Spears porn.jpg.exe; Britney
      Spears full album.mp3.exe; Britney Spears fuck.jpg.exe; Britney Spears
      cumshot.jpg.exe; Britney Spears blowjob.jpg.exe; Britney Spears and
      Eminem porn.jpg.exe; Britney sex xxx.jpg.exe; Best Matrix Screensaver
      new.scr; BlackIce_Firewall_Enterpriseactivation_Crack.exe;
      Butterfly.scr; Bifrost.scr; Arnold Schwarzenegger.jpg.exe; American
      Idol.doc.exe; Altkins Diet.doc.exe; Ahead Nero 8.exe; Adobe Premiere
      10.exe; Adobe Photoshop 10 full.exe; Adobe Photoshop 10 crack.exe;
      ACDSee 10.exe; AcrobatReader_New.exe; activation_crack.exe;
      angels.pif; 3D Studio Max 6 3dsmax.exe; 1001 Sex and more.rtf.exe

   These files are copies of the malware itself.

 Network Infection In order to ensure its propagation the malware attemps to connect to other machines as described below.


Exploit:
It makes use of the following Exploit:
– MS05-039 (Vulnerability in Plug and Play)


IP address generation:
It creates random IP addresses and tries to establish a connection with them.


Infection process:
Creates an FTP script on the compromised machine in order to download the malware to the remote location.

 IRC To deliver system information and to provide remote control it connects to the following IRC Server:

Server: jojogirl.3322.org
Port: 5262
Channel: #Phantom
Nickname: %six-digit random character string%



– This malware has the ability to collect and send information such as:
    • CPU speed
    • Current user
    • Free disk space
    • Free memory
    • Malware uptime
    • Information about the network
    • Information about running processes
    • Size of memory
    • System directory
    • Username
    • Information about the Windows operating system


– Furthermore it has the ability to perform actions such as:
    • connect to IRC server
    • Launch DDoS SYN flood
    • Launch DDoS UDP flood
    • disconnect from IRC server
    • Download file
    • Execute file
    • Join IRC channel
    • Kill process
    • Leave IRC channel
    • Open remote shell
    • Perform DDoS attack
    • Perform network scan
    • Restart system
    • Shut down system
    • Start keylog
    • Terminate process
    • Updates itself
    • Upload file
    • Visit a website

 Process termination List of processes that are terminated:
   • a2hijackfree.exe; adam.exe; AgtX0404.exe; AgtX0411.exe; AgtX0804.exe;
      AlertAst.exe; ALEScan.exe; ALEUpdat.exe; ALUNOTIFY.EXE;
      antivirus_update.exe; aports.exe; AUPDATE.EXE; BackRav.exe;
      Blackd.exe; Blackice.exe; botzor.exe; bronstab.exe; ccEmFlSv.exe;
      CCenter.exe; CfgWiz.exe; Cleanup.exe; CmdAgent.exe; coolbot.exe;
      csm.exe; csscan.exe; CVT.exe; DefWatch.exe; DWHWizrd.exe; EGhost.exe;
      eksplorasi.pif; fint2005.exe; FrameworkService.exe; FrmInst.exe;
      hellmsn.scr; HijackThis.exe; hkcmd.exe; HNetWiz.exe; hpmanager.exe;
      iamstats.exe; IceSword.exe; IDTemplate.exe; igfxtray.exe; InBuild.exe;
      Iparmor.exe; ISSVC.exe; java.exe; KATMain.EXE; kav.exe; KAV32.EXE;
      KAVDX.EXE; KAVLog2.EXE; KAVPFW.EXE; kavsend.exe; KAVStart.exe;
      kavsvc.exe; KillBox.exe; KMailMon.EXE; knlps.exe; knlsc13.exe;
      KPFWSvc.EXE; KRecycle.EXE; KRegEx.exe; KShrMgr.EXE; KVCenter.kxp;
      kvdetech.exe; KvDetect.exe; kvdisk.kxp; KVDOS.exe; KVMonXP.kxp;
      KVOL.exe; kvolself.exe; KvReport.kxp; KVScan.kxp; KVSrvXP.exe;
      KVStory.kxp; KVStub.kxp; kvupload.exe; kvwsc.exe; KvXP.kxp;
      KWatch.EXE; KWatch9x.EXE; LangSet.exe; LDVPREG.exe; logparser.exe;
      LRSend.exe; LSETUP.EXE; LUALL.EXE; LuaWrap.exe; LuComServer.EXE;
      LUInit.exe; MakeBoot.exe; McAffeAv.exe; mcconsol.exe; McScript.exe;
      McScript_InUse.exe; mcupdate.exe; MDAC.EXE; mousebm.exe; mousemm.exe;
      mousesync.exe; MsAgent.exe; msnmsgs.exe; MSTask.exe; naPrdMgr.exe;
      navustub.exe; NDETECT.EXE; NTdhcp.exe; nvchip4.exe; Patch.exe;
      PCCBrows.exe; pccguide.exe; pcclient.exe; PccLog.exe; pccmain.exe;
      PcCmdCom.exe; Pccspyui.exe; PcCtlCom.exe; PCCTool.exe; PCCVScan.exe;
      per.exe; PFW.exe; Phantom.exe; picx.exe; pireg.exe; pm.exe;
      ProcessExplorer.exe; Rav.exe; RAVDOS.EXE; RavHDBak.exe; RavMon.exe;
      RavMonD.exe; RavPatch.exe; RavStore.exe; RavStub.exe; RavTimer.exe;
      RavXP.exe; realsched.exe; RegClean.exe; RegGuide.exe; regsvc.exe;
      REGSVR32.EXE; Rescue.EXE; Rfw.exe; RfwMain.exe; rfwsrv.exe;
      rkdetector.exe; RootkitRevealer.exe; RsAgent.exe; RsConfig.exe;
      rssms.exe; Rtvscan.exe; RUNDLL32.EXE; SavRoam.exe; scan32.exe;
      ScanBD.exe; ScnCfg32.Exe; scrigz.exe; servce.exe; SetupWiz.EXE;
      shcfg32.exe; shstat.exe; SMARTDRV.EXE; SmartUp.exe; smss.exe;
      SOUNDMAN.exe; SymantecRootInstaller.exe; SymClnUp.exe; system.exe;
      taskgmr.exe; Tmntsrv.exe; TMOAgent.exe; TmPfw.exe; tmproxy.exe;
      TRA.EXE; TRIALMSG.exe; TrojanDetector.EXE; Trojanwall.exe;
      TrojDie.kxp; TSC.EXE; UnInstall.kxp; Update.EXE; UpdaterUI.exe;
      UpGrade.exe; VirusBox.kxp; VPC32.exe; VPDN_LU.exe; VPTray.exe;
      VsTskMgr.exe; winhost.exe; winldr.exe; wins.exe; wintbp.exe;
      winupdate.exe; wpa.exe; WriteCan.exe; Zonealarm.exe


 Backdoor The following port is opened:

– %SYSDIR%\remote.exe on TCP port 5262 in order to provide an FTP server.

 Miscellaneous Mutex:
It creates the following Mutex:
   • ___--->>>[E-v-i-l_S-e-c-u-r-i-t-y_T-e-a-m]<<<---___


String:
Furthermore it contains the following strings:
   • If u have Zotob's SourceCode, please u mail it to me!!! E-mail:x140yu@Gmail.Com thanks!!!
   • [Phantom] 2005 made by Evil[xiaou]. Special Thanks:x140d4n.
   • Play with the best, Die like the rest.

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

Description inserted by Irina Boldea on Tuesday, January 17, 2006
Description updated by Irina Boldea on Friday, January 20, 2006

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