Worm/Scano.AQ - Worm

See also

Summary

Full description

Statistics

Virus:	Worm/Scano.AQ
Date discovered:	11/09/2006
Type:	Worm
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Medium to high
Damage Potential:	Medium
Static file:	No
File size:	~22.000 Bytes
VDF version:	6.35.01.209 - Mon, 11 Sep 2006 15:30 (GMT+1)
IVDF version:	6.35.01.213 - Tue, 12 Sep 2006 09:00 (GMT+1)

General Methods of propagation:
   • Email
   • Peer to Peer

Aliases:
   • Mcafee: W32/Areses.f
   • Kaspersky: Email-Worm.Win32.Scano.aq
   • TrendMicro: WORM_SCANO.OF
   • F-Secure: Email-Worm.Win32.Scano.aq
   • Grisoft: I-Worm/Scano.BA
   • Eset: Win32/Scano.AQ

Platforms / OS:
   • 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
   • Registry modification
   • Steals information

Files It copies itself to the following location:
   • %WINDIR%\csrss.exe

The following file is created:

– %TEMPDIR%\Message.hta Further investigation pointed out that this file is malware, too. Detected as: VBS/Drop.Scano.AQ

It tries to executes the following files:

– Filename:
   • svchost.exe
using the following command line arguments: %WINDIR%\csrss.exe
Used to hide the process from Task Manager.

– Filename:
   • services.exe
using the following command line arguments: %WINDIR%\csrss.exe
Used to hide the process from Task Manager.

Registry The values of the following registry key are removed:

– [HKLM\SYSTEM\ControlSet002\Control\Session Manager]
   • "PendingFileRenameOperations"
   • "BootExecute"

The following registry keys are added:

– [HKCU\Software\Microsoft\Windows NT\CurrentVersion]
   • "Application"=dword:066efafe
   • "zkl"="z"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\explorer.exe]
   • "Debugger"="%WINDIR%\csrss.exe"

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:

To:
– Email addresses found in specific files on the system.

Subject:
One of the following:
   • Hi, what's up?
   • He, where are you?
   • Hi, drop me a line!!!
   • Hi! Please write to me urgently!
   • Hi! I'm waiting you online today!
   • Will you be online today?
   • When you're gonna answer me?
   • Re: write to me!
   • Re: Call me!
   • Re: Where are you?
   • Re: When you're gonna answer me?
   • Hi!!! How's the mood?
   • Re: How's the mood?
   • Re: Where have you been?

Body:

   • Hi!!!!! You haven't been writing for a long time. I began to worry) Where have you been? You remember, you've asked a progy from me? I've finally found it, so here it is. Check it out if this is what you've been looking for... bye

   • Hi, what's up? Will you show up online today?
     Drop me a line in ICQ, ok? Btw, I'm sending you the docs you've been looking for, find them attached. Check them out, ok?

   • Hi!
     I'm coming to you tomorrow, ok? When you are going to be home?
     You remember, you've asked some docs. Please find them attached. Check and see what's inside. That's it. Bye, till tomorrow...

   • Hi!
     You disappeared again. If you come online, drop me a line, ok?
     Btw, I sent you those docs that you've been looking for. Check them out. Bye!

   • Hi, give me a call just when you got the message! I'm tired of waiting. Btw, I'm sending that program that you've been looking for. Check it out. Appears to be that one. Bye!

   • Hi, what's up? If you have time tomorrow, please come over. After midday. By the way, don't forget to check the enclosed documents. Bye. See you tomorrow.

   • Hi, I got a free day tomorrow, and I'm waiting for you. Please come after midday. By the way, I'm sending you the documents that you've been asking for. Read them out... Bye!

   • Hi, how are you? What are your plans today? If you have time, please come over, and don't forget to check the program attached. Bye!

   • Hi, I found that program you asked for. Find it attached. Bye.

   • Hi, I saw you around today, but you didn't noticed me ( If you're gonna be at home, give a call, ok? By the way, check this file I'm sending. A very interesting program...

   • What's up! You haven't been writing for a long time
     I got news. I've finally that program you needed
     I'm sending it out. Use it. Bye!

   • Hi, drop me a line today, ok? And see the program I'm sending. Bye!

   • Hi, drop me a line if you can. Btw, I have a new ICQ. Please don't forget to check the attached documents. Bye.

   • Hi! How are you? Drop me a line if you can. I found your documents and I'm emailing them to you. Bye.

Attachment:
The contents of the file is not a copy of itself but another malware. A description can be found here: VBS/Drop.Scano.AQ

The filename of the attachment is one of the following:
   • Message.hta
   • File.hta
   • Document.hta
   • README.hta
   • Passwords.hta
   • Readme.hta
   • Important.hta
   • New.hta
   • COOL.hta
   • Archive.hta
   • Fotos.hta
   • private.hta
   • confidential.hta
   • secret.hta
   • images.hta
   • your_documents.hta
   • backup.hta

Mailing Search addresses:
It searches the following files for email addresses:
   • .adb; .asp; .cfg; .cgi; .mra; .dbx; .dhtm; .eml; .htm; .html; .jsp;
      .mbx; .mdx; .mht; .mmf; .msg; .nch; .ods; .oft; .php; .pl; .sht;
      .shtm; .stm; .tbb; .txt; .uin; .wab; .wsh; .xls; .xml; .dhtml

Avoid addresses:
It does not send emails to addresses containing one of the following strings:
   • @example.; 2003; 2004; 2005; 2006; @microsoft; rating@; f-secur; news;
      update; .qmail; .gif; anyone@; bugs@; contract@; feste; gold-certs@;
      help@; info@; nobody@; noone@; 0000; Mailer-Daemon@; @subscribe; kasp;
      admin; icrosoft; support; ntivi; unix; bsd; linux; listserv; certific;
      torvalds@; sopho; @foo; @iana; free-av; @messagelab; winzip; google;
      winrar; samples; spm111@; .00; ---; abuse; panda; cafee; spam; pgp;
      @avp.; noreply; local; root@; postmaster@

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
   • ftp
   • htdocs
   • http
   • icq
   • kazaa
   • lime
   • morpheus
   • mule
   • shar
   • source
   • upload
   • pub

   If successful, the following files are created:
   • 3D Studio Max 6 3dsmax.exe; ACDSee 10 full.exe; Adobe Photoshop 10
      full.exe; Adobe Premiere 10.exe; Ahead Nero 8.exe; Altkins
      Diet.doc.exe; American Idol.doc.exe; Arnold Schwarzenegger.jpg.exe;
      Best Matrix Screensaver new.exe; Britney sex xxx.jpg.exe; Britney
      Spears and Eminem porn.jpg.exe; Britney Spears blowjob.jpg.exe;
      Britney Spears cumshot.jpg.exe; Britney Spears fuck.jpg.exe; Britney
      Spears full album.mp3.exe; Britney Spears porn.jpg.exe; Britney Spears
      Sexy archive.doc.exe; Britney Spears Song text archive.doc.exe;
      Britney Spears.jpg.exe; Britney Spears.mp3.exe; Clone DVD 6.exe;
      Cloning.doc.exe; Cracks & Warez Archiv.exe; Dark Angels new.exe;
      Dictionary English 2004 - France.doc.exe; DivX 8.0 final.exe; Doom 3
      release 2.exe; E-Book Archive2.rtf.exe; Eminem blowjob.jpg.exe; Eminem
      full album.mp3.exe; Eminem Poster.jpg.exe; Eminem sex xxx.jpg.exe;
      Eminem Sexy archive.doc.exe; Eminem Spears porn.jpg.exe;
      Eminem.mp3.exe; Full album all.mp3.exe; Gimp 1.8 Full with Key.exe;
      Harry Potter 1-6 book.txt.exe; Harry Potter 5.mpg.exe; Harry Potter
      all e.book.doc.exe; Harry Potter e book.doc.exe; Harry Potter
      game.exe; Harry Potter.doc.exe; Harry Potter and the Sorcerer's Stone
      game.exe; How to hack new.doc.exe; Internet Explorer 9 setup.exe;
      Kazaa Lite 4.0 new.exe; Kazaa new.exe; Keygen 4 all new.exe; Learn
      Programming 2004.doc.exe; Lightwave 9 Update.exe; Magix Video Deluxe 5
      beta.exe; Matrix 3 .mpg.exe; Microsoft Office 2003 Crack best.exe;
      Microsoft WinXP Crack full.exe; MS Service Pack 6.exe; source
      code.exe; Norton Antivirus 2005 beta.exe; Opera 11 free.exe;
      Partitionsmagic 10 beta.exe; Porno Screensaver britney.exe; RFC
      compilation.doc.exe; Ringtones.doc.exe; Nostradamus.doc.exe; World
      Trade Center last video.mpeg.exe; anthrax.doc.exe; Osama Bin
      Laden.jpg.exe; Taliban.exe; Osama bin Laden.mpg.exe; Yellow Pages.exe;
      Ringtones.mp3.exe; Saddam Hussein.jpg.exe; Screensaver2.exe; Serials
      edition.txt.exe; Smashing the stack full.rtf.exe; Star Office 9.exe;
      Teen Porn 15.jpg.exe; The Sims 4 beta.exe; Ulead Keygen 2004.exe;
      Visual Studio Net Crack all.exe; Vista review.doc.exe; WinAmp 13 full
      with sources.exe; Windows Vista Sourcecode.doc.exe; Windows 2003
      crack.exe; Windows XP crack.exe; WinXP eBook newest.doc.exe; XXX
      hardcore pics.jpg.exe; 3D Studio Max 6 3dsmax.pif; ACDSee 10 full.pif;
      Adobe Photoshop 10 full.pif; Adobe Premiere 10.pif; Ahead Nero 8.pif;
      Altkins Diet.doc.pif; American Idol.doc.pif; Arnold
      Schwarzenegger.jpg.pif; Best Matrix Screensaver new.pif; Britney sex
      xxx.jpg.pif; Britney Spears and Eminem porn.jpg.pif; Britney Spears
      blowjob.jpg.pif; Britney Spears cumshot.jpg.pif; Britney Spears
      fuck.jpg.pif; Britney Spears full album.mp3.pif; Britney Spears
      porn.jpg.pif; Britney Spears Sexy archive.doc.pif; Britney Spears Song
      text archive.doc.pif; Britney Spears.jpg.pif; Britney Spears.mp3.pif;
      Clone DVD 6.pif; Cloning.doc.pif; Cracks & Warez Archiv.pif; Dark
      Angels new.pif; Dictionary English 2004 - France.doc.pif; DivX 8.0
      final.pif; Doom 3 release 2.pif; E-Book Archive2.rtf.pif; Eminem
      blowjob.jpg.pif; Eminem full album.mp3.pif; Eminem Poster.jpg.pif;
      Eminem sex xxx.jpg.pif; Eminem Sexy archive.doc.pif; Eminem Spears
      porn.jpg.pif; Eminem.mp3.pif; Full album all.mp3.pif; Gimp 1.8 Full
      with Key.pif; Harry Potter 1-6 book.txt.pif; Harry Potter 5.mpg.pif;
      Harry Potter all e.book.doc.pif; Harry Potter e book.doc.pif; Harry
      Potter game.pif; Harry Potter.doc.pif; Harry Potter and the Sorcerer's
      Stone game.pif; How to hack new.doc.pif; Internet Explorer 9
      setup.pif; Kazaa Lite 4.0 new.pif; Kazaa new.pif; Keygen 4 all
      new.pif; Learn Programming 2004.doc.pif; Lightwave 9 Update.pif; Magix
      Video Deluxe 5 beta.pif; Matrix 3 .mpg.pif; Microsoft Office 2003
      Crack best.pif; Microsoft WinXP Crack full.pif; MS Service Pack 6.pif;
      source code.pif; Norton Antivirus 2005 beta.pif; Opera 11 free.pif;
      Partitionsmagic 10 beta.pif; Porno Screensaver britney.pif; RFC
      compilation.doc.pif; Ringtones.doc.pif; Nostradamus.doc.pif; World
      Trade Center last video.mpeg.pif; anthrax.doc.pif; Osama Bin
      Laden.jpg.pif; Taliban.pif; Osama bin Laden.mpg.pif; Yellow Pages.pif;
      Ringtones.mp3.pif; Saddam Hussein.jpg.pif; Screensaver2.pif; Serials
      edition.txt.pif; Smashing the stack full.rtf.pif; Star Office 9.pif;
      Teen Porn 15.jpg.pif; The Sims 4 beta.pif; Ulead Keygen 2004.pif;
      Visual Studio Net Crack all.pif; Vista review.doc.pif; WinAmp 13 full
      with sources.pif; Windows Vista Sourcecode.doc.pif; Windows 2003
      crack.pif; Windows XP crack.pif; WinXP eBook newest.doc.pif; XXX
      hardcore pics.jpg.pif; 3D Studio Max 6 3dsmax.scr; ACDSee 10 full.scr;
      Adobe Photoshop 10 full.scr; Adobe Premiere 10.scr; Ahead Nero 8.scr;
      Altkins Diet.doc.scr; American Idol.doc.scr; Arnold
      Schwarzenegger.jpg.scr; Best Matrix Screensaver new.scr; Britney sex
      xxx.jpg.scr; Britney Spears and Eminem porn.jpg.scr; Britney Spears
      blowjob.jpg.scr; Britney Spears cumshot.jpg.scr; Britney Spears
      fuck.jpg.scr; Britney Spears full album.mp3.scr; Britney Spears
      porn.jpg.scr; Britney Spears Sexy archive.doc.scr; Britney Spears Song
      text archive.doc.scr; Britney Spears.jpg.scr; Britney Spears.mp3.scr;
      Clone DVD 6.scr; Cloning.doc.scr; Cracks & Warez Archiv.scr; Dark
      Angels new.scr; Dictionary English 2004 - France.doc.scr; DivX 8.0
      final.scr; Doom 3 release 2.scr; E-Book Archive2.rtf.scr; Eminem
      blowjob.jpg.scr; Eminem full album.mp3.scr; Eminem Poster.jpg.scr;
      Eminem sex xxx.jpg.scr; Eminem Sexy archive.doc.scr; Eminem Spears
      porn.jpg.scr; Eminem.mp3.scr; Full album all.mp3.scr; Gimp 1.8 Full
      with Key.scr; Harry Potter 1-6 book.txt.scr; Harry Potter 5.mpg.scr;
      Harry Potter all e.book.doc.scr; Harry Potter e book.doc.scr; Harry
      Potter game.scr; Harry Potter.doc.scr; Harry Potter and the Sorcerer's
      Stone game.scr; How to hack new.doc.scr; Internet Explorer 9
      setup.scr; Kazaa Lite 4.0 new.scr; Kazaa new.scr; Keygen 4 all
      new.scr; Learn Programming 2004.doc.scr; Lightwave 9 Update.scr; Magix
      Video Deluxe 5 beta.scr; Matrix 3 .mpg.scr; Microsoft Office 2003
      Crack best.scr; Microsoft WinXP Crack full.scr; MS Service Pack 6.scr;
      source code.scr; Norton Antivirus 2005 beta.scr; Opera 11 free.scr;
      Partitionsmagic 10 beta.scr; Porno Screensaver britney.scr; RFC
      compilation.doc.scr; Ringtones.doc.scr; Nostradamus.doc.scr; World
      Trade Center last video.mpeg.scr; anthrax.doc.scr; Osama Bin
      Laden.jpg.scr; Taliban.scr; Osama bin Laden.mpg.scr; Yellow Pages.scr;
      Ringtones.mp3.scr; Saddam Hussein.jpg.scr; Screensaver2.scr; Serials
      edition.txt.scr; Smashing the stack full.rtf.scr; Star Office 9.scr;
      Teen Porn 15.jpg.scr; The Sims 4 beta.scr; Ulead Keygen 2004.scr;
      Visual Studio Net Crack all.scr; Vista review.doc.scr; WinAmp 13 full
      with sources.scr; Windows Vista Sourcecode.doc.scr; Windows 2003
      crack.scr; Windows XP crack.scr; WinXP eBook newest.doc.scr; XXX
      hardcore pics.jpg.scr

Backdoor Contact server:
All of the following:
   • xeseretuo.com/m2/**********
   • xeseretuo.com/gt6/**********
   • xeseretuo.com/nu/**********

As a result it may send some information. This is done via the HTTP GET request on a PHP script.

Miscellaneous Mutex:
It creates the following Mutex:
• NUMENSyscall

File details 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 Adriana Popa on Mon, 02 Oct 2006 12:28 (GMT+1)
Description updated by Adriana Popa on Fri, 20 Oct 2006 09:40 (GMT+1)

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