Virus:Worm/Kebede.G.1
Date discovered:02/08/2005
Type:Worm
In the wild:No
Reported Infections:Low
Distribution Potential:Medium to high
Damage Potential:Medium to high
Static file:Yes
File size:70.702 Bytes
MD5 checksum:fa47e6d0af762aaada1c32bd27a8306e
VDF version:6.31.01.46

 General Methods of propagation:
   • Email
   • Peer to Peer


Aliases:
   •  Kaspersky: Email-Worm.Win32.Kebede.g
   •  TrendMicro: WORM_KEDEBE.E
   •  Sophos: W32/Kedebe-E
   •  Eset: Win32/VB.AJ
   •  Bitdefender: Win32.Kebede.H@mm


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


Side effects:
   • Drops a malicious file
   • 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%\ %random Windows executable%



It renames the following files:

    •  %WINDIR%\lsass.exe into %WINDIR%\lsasskeb.ede
    •  %WINDIR%\svchost.exe into %WINDIR%\svchostkeb.ede
    •  %WINDIR%\Services.exe into %WINDIR%\Serviceskeb.ede
    •  %SYSDIR%\Explorer.exe into %SYSDIR%\Explorerkeb.ede



It deletes the following files:
   • %PROGRAM FILES%\Norton AntiVirus\IWP\NPFMNTOR.EXE
   • %PROGRAM FILES%\Norton AntiVirus\IWP\IWP.DLL
   • %PROGRAM FILES%\Norton AntiVirus\IWP\SymFwAgt.DLL
   • %PROGRAM FILES%\Zone Labs\ZoneAlarm\MailFrontier\mantispm.exe
   • %PROGRAM FILES%\Zone Labs\ZoneAlarm\MailFrontier\AddinMon.exe
   • %PROGRAM FILES%\Zone Labs\ZoneAlarm\zlclient.exe
   • %PROGRAM FILES%\Zone Labs\ZoneAlarm\email.zap
   • %PROGRAM FILES%\Zone Labs\ZoneAlarm\firewall.zap
   • %PROGRAM FILES%\Zone Labs\ZoneAlarm\alert.zap
   • %PROGRAM FILES%\Zone Labs\ZoneAlarm\filter.zap
   • %PROGRAM FILES%\Zone Labs\ZoneAlarm\programs.zap
   • %PROGRAM FILES%\Symantec\SYMEVENT.SYS
   • %PROGRAM FILES%\Norton AntiVirus\OPSCAN.EXE
   • %PROGRAM FILES%\microsoft antispyware\gcasservalert.exe
   • %PROGRAM FILES%\microsoft antispyware\giantantispywareupdater.exe
   • %PROGRAM FILES%\microsoft antispyware\gcasnotice.exe



The following file is created:

– %SYSDIR%\ %three-digit random character string%log.exe Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: TR/Kebede.F

 Registry The following registry key is added in order to run the process after reboot:

– HKLM\Software\Microsoft\Windows\CurrentVersion\Run
   • "Anti-Virus Product Sync(%SYSDIR%\ %three-digit random character string%log.exe)"="%SYSDIR%\ %three-digit random character string%log.exe"



The following registry keys are added:

– HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows
   • "Run"="%SYSDIR%\ %random Windows executable%"

– HKLM\Software\Microsoft\MediaPlayer\Player
   • "Player Already Configured"="True"

 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)


Subject:
One of the following:
   • let's chat here...; I'm going to somewhere; Re: hi; **IMPORTANT** You
      Won Diversity Visa Lottery!; [Subject Hidden]; PaRtY tonight??!; ANTI;
      **URGENT** Microsoft Windows Automatic Update disabled.; Fw: Fw: Osama
      bin Laden has been arrested!; **WARNING** Your Internet Information;
      **WARNING** Your Internet account has been suspended.; Password; WE
      NEED TO TALK.; ANTS; **WARNING** A Worm on Michael Jackson's Death.;
      Fw: Fw: The SECRET behind John Paul's death; John Paul's death and the
      doctors...; **Breaking News** Author of MyDoom has been ARRESTED!; FOR
      GIRLS ONLY!!, Boys; Make sure u are alone; J Lo with no closes ON!!;
      Re: It seems a good day!!; FOR THE LAST TIME!!; Your chat room friend;
      RE: the document; **WARNING** Account Currently Disabled.; Welcome
      back!!; **ALERT**; Partnership; Your request; ALERT; [New message
      available]; Re: r u there; Microsoft Introducing Windows Long Horn



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

   • Attached is a confidential information about the Webs you browsed. The list was logged since 2004.

   • Big day huh! What a great surprise! I've just read on Arab site that Osama bin Laden has been arested by the US soldiers. It's lot to talk here. I just copied the whole text in Notepad and attached it. Nice news huh?!

   • Your IP was logged because you accessed porn related sites. Attached is list of sites you visited and information about your Internet account.

   • I'm back with the password. Hit me back

   • Call me when you finish reading the document

   • I don't know how to say it, but it is really annoying thing that happened on John Paul the 2nd. He was killed by two 'doctors' who were hired by some security firms. The text attached contains all the story behind his death.Please, try to forward this document to all your relatives and reveal the truth.

   • Hey we need to talk. Read the attachment and hit me back

   • This is for the last time. Answer me.

   • i have found a new chat rooms, see you there.

   • someone sent me this document which is stolen from a secret government body and deals about John Paul's death. It says he was killed by two 'doctors' who were hired by some government bodies. The text attached contains all the story behind his death and who these doctors are.

   • Microsoft is proud to announce the latest version of Windows-Long Horn. What make this version specialis that it is the only Microsoft's product with component's source code available to 3rd party. Full documentation is attached document. We have also included Windows Media Player 10's source code.
     Microsoft Corporation (c) 1993 - 2006

   • > Please send me that document, thanx
     I have attached it :)

   • hey it's me from the chat room, remember? anyway I've sent u my pic. let me know wussup.

   • I'm on vacation, what about you? Check out my girl, N-A-K-E-D!!

   • HeEeLLLoOoOoO! Party tonight???!!! Let me KnOw what's up.

   • A new Worm is spreading by using Michael Jackson's death. After the death of the famous pop star, Michael Jackson, during the acciedent yesterday, new computer Worms appeared to use the news as a subject, said Graham Cluley, senior technology consultant.
     To unregister, just go to http://www.bbc.co.uk/ at Sophos.This Worm has 10 different subjects which made it spread widely. All the characterstics of the e-mail are attached in text document.
     System and server administrators are advised to read/know the characterstics of the Worm, urges Sophos. Sophos would also like to express its grief about the pop star's death.
     
     ++Scanner: Sophos Anti-virus
     Sophos Internet Worm Protection Center.
     ++Attachment: No Virus Found(Clean text document)

   • Microsoft has just annouced the arrest of the author of the Internet Worm MyDoom. Microsoft says, Someone
     sent us an e-mail that has a document about the location where the author live. Even though the information true and led us to the arrest of the author, the sender didn't mention about himself so that we are unable to give him the $500,000 reward. And the author of MyDoom has be found to be a former Microsoft's employee fired becuase of his discipline. Now Microsoft and SCO are confused to whom to give the reward.
     Microsoft has also released a new form that the sender can fill in and take the money. The sender is urged to send his/her post address to Microsoft or SCO using the attached form.

   • [DOCUMENTS AVAILABLE]

   • Are you alone? The have fun ;)

   • This message was sent because of your registration at:http://www.bbc.co.uk/breakingnews_alert/mydoom/tmplt.cgi?t=re49358aa3aae77ab0dc382;act=SF;f=

   • [The mail client could not display the picture due to high resolution on the graphics.
     Contents has been attached as a hexadecimal text.]

   • you again!! c ya!

   • This message was sent automatically from the Microsoft Windows Update Web site.

   • You will not be able to log on to your account anymore. See the attac/

   • We were waiting for u! Group pic is available.

   • no hay sitio para ...!!

   • Subject: the document

   • [BODY REMOVED]

   • [ATTACHED]

   • You have won this year's diversity visa lottery. We reommend you to start the process as soon as possible. Read the attached document for more information.
     The Visa Lottery Commite.

   • \xeb\x02\xeb\x0f\x66\x81\xec\x04\x08\x8b\xec\x83\xec\x50\xe8\xef\xff\xff\xff\x5b\x80\xc3\x10\x33\xc9\x66\xb9\xba\x01\x80\x33\x95\x43\xe2\xfa\x7e\xfa\xa6\x4e\x26\xa5\xf1\x1e\x96\x1e\xd5\x99\x1e

   • We have found that Windows Automatic Update is not enabled on your computer and Windows could not update itself. This may have happened because your system is infected with a latest virus. We recommend you to download updates manually and install on your system. We have sent you Microsoft Windows Malicious Software Removal Tool. Scan your
     system with this software and delete any file detected as virus. Then try to update Windows.


Attachment:
The filename of the attachment is one of the following:
   • Account.doc; attached_document.doc; Bin_Laden_Arrested.txt; body.txt;
      boys.txt; characters.txt; chat_server; chat_server.txt; contents.txt;
      ditail.txt; document.doc; files.txt; Hex_Pic.doc; Hex_Picture.txt;
      Important.doc; Info.txt; JohnPaul.txt; JohnPaul_Death.Doc;
      message.doc; messaggio.doc; microsoft.doc; Microsoft_form.doc;
      my_girl.jpg; my_pics.jpeg; my_pictur.jpeg; party_location.txt;
      password.doc; photo.jpg; Removal_tool; Sex stories.txt; True_Ezin.doc;
      where_the_party_is.doc; with_this_girl.jpg; worm_characters.txt;
      you_lied.txt; your_document.doc

The attachment is a copy of the malware itself.



The email looks like the following:


 Mailing Search addresses:
It searches the following files for email addresses:
   • .htm; .wab; .txt; .eml; .dbx; .doc; .rtf; .jsm; .php; .htm; .htm;
      .nws; .msg; .stml; .inbox; .outbox; .oft; .xml


Address generation for FROM field:
To generate addresses it uses the following strings:
   • administrator; Diversity Visa Lottery <information@diversityvisa.org>;
      information@diversityvisa.org; Mail Administraor       Delivery Subsystem       <windows@microsoft.com>; Microsoft Windows Update
      <update@microsoft.com>; Post Master       postoffice; update@microsoft.com; windows@microsoft.com;
      bugonyourwork@yahoo.com; stan; bill; bob; jack; fred; ted; kevin;
      david; george; sami; andrew; jose; maria; mary; ray; tom; peter; john;
      daniel; alex; michael; james; mike; robert; jane; joe; bini; dave;
      matt; steve; smith; debby; helen; jerry; jimmy; brenda; claudia;
      sandra; calvin; christoph; julie; linda; adam; brent; alice; anna

It combines the result with domains that were found in files, which were previously searched for addresses.


Avoid addresses:
It does not send emails to addresses containing one of the following strings:
   • sophos; @syman; norton; example; rating; .gov; submit; kasper; antivi;
      abuse; domain.; spam; @mm; announce; @from; kernel.; sql.; zone;
      privacy; support; your; master@; you@; panda; mozilla; linux;
      detection; bitdefender; mcafee; @www; anyone; anywhere; somebody;
      someone; subscri; freeav; free-av; registe; report; name@; admin;
      spybot; nobody; help; secur; service; gmail.; sun.; info@; java.;
      smtp.; sales@; foo.; feedback; @nai; noreply; receiver@; messagelab;
      virus; winzip; msdn.; winrar; accoun; borlan; contact; soft.; comment;
      mailer-daemon; sender@; remail; user@; password; avp; me@; .mil;
      @trend


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:
   • sparrow.; .net.et; telecom; mx.; mx1.; mail.; mx1.mail.; smtp.; ns.;
      relay.; gate.; inbound.; public.; relay1.; mail1.; smtp1.; mta.; mx2.;
      dns.; mx3.; a.mx.; dns1.; mx0.; ms.; mx4.; mx5.; mx6.; mx7.; mx8.;
      smtp2.; mail2.; mail3.; mail4.; mail5.; mail12.; mailserver.; b.mx.;
      e.mx.; gateway.; mx00.; mx01.; mx02.; mx03.; mx04.; mx05.; mx06.;
      mx07.; mx08.; www.; www.email.; ns1.; ns2.; ns3.; dns2.; mail-relay.;
      smtp-relay.; webmail.; ms1.; ms2.; ms3.; freemail.; inbound0.;
      inbound1.; udi; inbound2.; mx2.mail.; mx3.mail.; pop.

 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:
   • shared
   • downloaded

   If successful, the following files are created:
   • spyware remover.com; school girls getting fucked.com; norton personal
      firewall 2005 patch.com; turbo c++.pif; zonealarm security suite 2005
      crack.com; windows xp pro bug fix 2.com; win server 2003 remote
      exploit.cmd; sasser removal tool.com; microsoft antispyware patch.com;
      dvd ripper keygen.com; naked girls screen saver.scr; porn download
      links.txt; sasser source code.txt; msn messenger 7.0 installer.com;
      sasser source code.sfx.com; winrar 4.2.com; internet explorer 7.0
      installer.com; flash mx 2005 serial.exe; upx exe packer 2.4.com;
      w32.kebede removal tool.com

   These files are copies of the malware itself.

 Miscellaneous Mutex:
It creates the following Mutexes:
   • -oO]xX|-S-k-y-N-e-t-|Xx[Oo-_
   • [SkyNet.cz]SystemsMutex
   • AdmSkynetJklS003
   • Zone Alarm Mutex
   • AdmSkynetJKIS003
   • qwedefacedRDE
   • ____--->>>>U<<<<--_____
   • SwebSipcSmtxS0
   • NTShell Taskman Startup Mutex
   • MuXxXxTENYKSDesignedAsTheFollowerOfSkynet-D
   • 'D'r'o'p'p'e'd'S'k'y'N'e't'
   • 43jfds93872
   • H-E-L-L-T-O-B
   • SkynetSasserVersionWithPingFast
   • _-oOaxX|-+S+-+k+-+y+-+N+-+e+-+t+-|XxKOo-_
   • WWWdefacedWWW
   • LK[SkyNet.cz]SystemsMutex
   • SkyNet-Sasser
   • H-e-l-l-B-o-t-3-T-e-a-M!!!
   • H-e-l-l-B-o-t
   • H-e-l-l-B-o-t-3
   • NetDy_Mutex_Psycho
   • 89845848594808308439858307378280987074387498739847
   • AdmMoodownJKIS003
   • SkYnEt_AVP
   • _-oO]xX|-S-k-y-N-e-t-|Xx[Oo-_
   • ~~~Bloodred~~~owns~~~you~~~xoxo~~~2004
   • Protect_USUkUyUnUeUtU_Mutex
   • DrDetroit[Bloodred.B]
   • MI[SkyNet.cz]SystemsMutex
   • FAST[Kebede.E]FAST

 File details Programming language:
 The malware program was written in Visual Basic.


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

Description inserted by Irina Boldea on Monday, March 27, 2006
Description updated by Andrei Ivanes on Wednesday, March 29, 2006

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