W32.Antiman.E@mm

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Discovered: May 03, 2005
Updated: February 13, 2007 12:38:26 PM
Type: Worm
Systems Affected: Windows


W32.Antiman.E@mm is a mass-mailing worm that uses its own SMTP engine to send itself to all email addresses that it finds on the compromised computer.

Antivirus Protection Dates

  • Initial Rapid Release version May 03, 2005
  • Latest Rapid Release version August 08, 2016 revision 023
  • Initial Daily Certified version May 03, 2005
  • Latest Daily Certified version August 09, 2016 revision 001
  • Initial Weekly Certified release date May 04, 2005

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Writeup By: Hyun Choi

Discovered: May 03, 2005
Updated: February 13, 2007 12:38:26 PM
Type: Worm
Systems Affected: Windows


When W32.Antiman.E@mm is executed, it performs the following actions:

  1. Copies itself as the following:

    • %Windir%\services.exe
    • %Windir%\antimanele.scr

      Note: %Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.

  2. Copies itself as the following:

    %UserProfile%\Start Menu\Programs\Startup\rundll32.exe

    Note: %UserProfile% is a variable that refers to the current user's profile folder. By default, this is C:\Documents and Settings\<Current User> (Windows NT/2000/XP).

  3. Creates the following text file, where it logs the email retrieving process:

    C:\log.txt

  4. Adds the value:

    "ScreenSaveTimeOut" = "300"

    to the registry subkey:

    HKEY_CURRENT_USER\Control Panel\Desktop

  5. Adds the value:

    "SCRNSAVE.EXE" = "%Windir%\antimanele.scr"

    to the registry subkey:

    HKEY_CURRENT_USER\Control Panel\Desktop

  6. Adds the value:

    "Services" = "%Windir%\services.exe"

    to the registry subkeys:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run

  7. Retrieves email addresses from the Deleted Items, Inbox, and Outbox folders in Microsoft Outlook.

  8. Retrieves email addresses from Yahoo Messenger log files.

  9. Uses its own SMTP engine to send itself to all the email addresses it finds. It uses either the default SMTP server of the compromised computer or one of the following servers:

    • mx1.mail.yahoo.com
    • mx2.mail.yahoo.com
    • mx3.mail.yahoo.com
    • mx4.mail.yahoo.com
    • mx1.mail.hotmail.com
    • mx2.mail.hotmail.com
    • mx3.mail.hotmail.com
    • mx4.mail.hotmail.com
    • mx.rdsnet.ro
    • mta3.rdslink.ro
    • mx1.pcnet.ro
    • ns.atlastelecom.ro
    • smtp.zappmobile.ro
    • smtp2.arnet.com.ar
    • zerg.astral.ro
    • mail.dnttm.ro
    • relay.logicnet.ro
    • millennium.nolimits.ro
    • 141.ro
    • www.apropo.ro
    • ns.oltenia.ro
    • s1.go.ro
    • smtp.ines.ro
    • from mail.lug.ro
    • alfa.texnet.ro
    • monster.totalnet.ro
    • delrom.ro
    • rack.elite.ro
    • praf.work.ro
    • ns.fdsc.ro
    • fbsd.genesys.ro
    • nemere-gw.planet.ro
    • terranet.ro
    • jera.tvr.ro
    • smtp.as.ro
    • smtp.dainet.ro
    • smtp.dialplus.ro
    • smtp.cegis.ro
    • smtp.inext.ro
    • smtp.planet.ro
    • smtp.inel.ro
    • smtp.kushi.ro
    • overlord.ro
    • mail.arhiepiscopiatomisului.ro
    • mail.cmb.ro
    • mail.ingfiz.ro
    • mail.tinet.ro
    • mail.mymail.ro
    • mail.apropo.ro
    • mail.impromex.ro
    • mail.geostar.ro
    • mail.totalnet.ro
    • mail.bucovinet.ro
    • mail.rol.ro
    • relay.gtstelecom.ro
    • mx1.pcnet.ro
    • smtp.dnt.ro
    • scentra.dntcj.ro
    • relay-1.dntis.ro
    • mail.easynet.ro
    • relay1.romania.eu.net
    • mail-relay.eu.net
    • smtp.fx.ro
    • ns.matco.ro
    • mail.mailbox.ro
    • mx.kappa.ro
    • mx2.kappa.ro
    • mail.rdsnet.ro
    • mail.rdslink.ro
    • tag.starnets.ro
    • relay.totalnet.ro
    • mail.xnet.ro
    • mail.remote.xnet.ro
    • mail.remote1.xnet.ro
    • mail.iasi.rdsnet.ro
    • mail.timisoara.rdsnet.ro
    • mail.constanta.rdsnet.ro
    • mail.brasov.rdsnet.ro
    • mail.bacau.rdsnet.ro
    • mail.craiova.rdsnet.ro
    • mail.arad.rdsnet.ro
    • mail.ploiesti.rdsnet.ro
    • mail.satumare.rdsnet.ro
    • mail.pcnet.ro
    • smtp.xnet.ro
    • smtp.home.ro
    • mail.home.ro
    • relay.n0i.net
    • mail.home.ro


      The email has the following characters:

      From:
      The From line may be spoofed.
    • Subject: La multi ani !
      Message Body: Stiu ca e cam tarziu, dar eu iti urez totusi un sincer La Multi Ani!
      Attachment: felicitare.exe
    • Subject: Antivirus Update
      Message Body:
      I have attached the latest antvirus.
      It works for me.
      Attachment: antivirus_kit.exe
    • Subject: Sex in 3
      Message Body: Sper sa iti placa de prietena mea  ;)
      Attachment: Carmen._packed_divx.scr
    • Subject: Incearca noul screensaver!
      Message Body: :)
      Attachment: screensaver_XP.scr
    • Subject: Ordin de plata
      Message Body:
      Scuze pentru intarzierea cu care am trimis banii.
      Sper sa-i fi trimis in contul care trebuie.
      OP
      Attachment: mil lei._scan_jpg.scr
    • Subject: Utilitar Antimanele
      Message Body:
      Daca nu mai suportati manelele la servici, scoala, in tramvai, taxi, metrou, etc., trimiteti acest mesaj la toti prietenii dvs. !
      Atasat este un executabil care sterge manelele de pe calculatorul persoanei care-l executa. Unii i-ar putea spune "virus"
      Ajutati atunci virusul sa se raspandeasca!
      P.S.
      Pentru manelisti, puteti schimba subiectul cand trimiteti mesajul mai departe :)
      Attachment: utilitar_am.exe
    • Subject: Votati acum!
      Message Body:
      Sunt alegerile anticipate o solutie pentru Romania?
      Deschideti programul Vot, alegeti votul dvs. si vedeti rezultatele.
      Si parerea ta conteaza!
      Attachment: vot_[current date dd.mm.yyyy].exe
    • Subject: Cu sau fara Manele ?
      Message Body:
      Credeti ca ar fi mai bine ca manelele sa fie interzise in Romania?
      Deschideti programul de votare, alegeti votul dvs. si vedeti rezultatele.
      Si parerea ta conteaza!
      Attachment: vot_manele_[current date dd.mm.yyyy].exe
    • Subject: Maria
      Message Body:
      Draga Ionel
      Scuza-ma ca nu ti-am mai scris de mult timp, dar am avut ceva probleme cu calculatorul
      Ti-am promis ultima data pe chat o poza cu mine dezbracata... m-am gandit mult la asta si cred ca pana la urma cel mai bine e sa-ti trimit o poza.
      Sper sa-ti placa. Daca nu o sa-mi mai scrii dupa mesajul asta, o sa te inteleg...
      Maria,
      [current date dd.mm.yyyy]
      Attachment: poza_maria._JPG.scr
    • Subject: Guta, ultimul album
      Message Body:
      content type = mp3 media file
      Bit X19 antivirus scanned results - ok.
      Attachment: Adrian Copilul Minune - ultimul album ([current date mm.yyyy])._zip.exe
    • Subject: Delivery Status (Failure)
      Message Body:
      This is an automatically generated Delivery Status Notification.
      Delivery to last recipient failed.
      Email returned as attachment text file.
      Attachment: failed message.txt.scr
    • Subject: Poza cu tine pe net???
      Message Body:
      Salut,
      Am vazut poza asta cu tine pe un site. Chiar tu esti?
      Sau s-ar putea sa semene doar cu tine...
      Attachment: Scan_[current date mm.yyyy].scr
    • Subject: Dacia Logan varianta
      Message Body: Cum o sa arate varianta noua, de 3000 de Euro de la Dacia Logan?
      Attachment: Logan_screenshot[current date yyyy]._jpg.scr
    • Subject: Re: Poze
      Message Body:
      Salut,
      Am vazut deja pozele astea. Alea cu blonda sunt interesante...
      Altele mai noi nu ai?
      Attachment: Poze[current date yyyy].zipped.exe
    • Subject: Norton Antivirus Virus Definitions (Intelligent Updater) -
      Message Body:
      An update for the Symantec Gateway Security AntiVirus engine to protect against the W32.XXX@mm worm is now available.
      Symantec Gateway Security 5000 Series users are advised to run LiveUpdate.
      Please run attached update now, in order to protect your computer!
      Enrique B. Salem, Senior Vice President
      Network Security Solutions
      Symantec Corp.
      Attachment: nav_update_[current date yyyy].exe
    • Subject: Re: Concediu
      Message Body:
      Salut,
      Am gasit solutia pentru concediu...
      Nici preturile nu sunt prea mari...?
      pensiune_scan
      Sondaj de opinie
      De curand s-a hotarat interzicerea taxiurilor private in Romania.
      Vor fi permise numai taxiuri apartinand regiilor autonome de stat, infrastructura urmand a fi creata cu bani de la bugetul public.
      Printre motivele invocate de parlamentarii care au depus proiectul de lege se numara: muzica de proasta calitate care se asculta in taxi, soferi necivilizati, masini vechi si insalubre.
      Credeti ca este o idee buna? Deschideti pagina atasata si spuneti-va parerea!
      Attachment: Sondaj INSOMAR._html.scr
    • Subject: Prin Legea 28/16.04.2005 s-a hotarat interzicerea ascultarii manelelor in locurile publice din Romania.
      Message Body:
      Vor fi permise numai melodii de buna calitate, autorizate de CNA, Agentia de Monitorizare a Presei, Asociatia Rom
      na de Comunicatii Audiovizuale, Asociatia Pro Democratia, Centrul pentru Jurnalism Independent, Freedom House si Fundatia pentru o Societate Deschisa.
      Printre motivele invocate de parlamentarii care au depus proiectul de lege se numara si lipsa de bun gust si infantilismul versurilor, sau copierea si adaptarea in fuga a liniilor melodice din hit-uri de succes de peste hotare.
      Credeti ca este o idee buna?
      Deschideti pagina atasata si spuneti-va parerea!
      BitDefender Worm Remover
      Ne-am saturat de mesajele zilnice cu virusul antimanele!
      S-a descoperit cum scapam definitiv de virus. Trimite mai departe.
      Moarte roackerilor!
      Hai Steaua!
      Attachment: W32.Antiman.A.remover.scr
    • Subject: Pentru Tine
      Message Body:
      Draga utilizatorule de calculator,
      Eu sunt un virus si am ajuns din intamplare si la adresa ta de email.
      In mod normal ar trebui sa sterg toata muzica de prost gust (a se citi generic, manele) de pe calculatorul tau, dupa care sa ma trimit mai departe si la prietenii tai.
      Dar, m-am gandit ca nu e corect asa si astazi voi face o exceptie. De accea iti ofer sansa de a-ti sterge singur tot ce crezi ca inseamna muzica de prost gust, kitsch si incultura de pe calculator.
      Eu nu voi face nimic. Daca totusi vrei sa te verifici, porneste si programul "utilitar.exe", atasat acestui mesaj. Este posibil sa mai fi uitat sa stergi ceva si ar fi pacat, nu?
      Multumesc.
      Eu, Virus DeTreaba.
      Attachment: utilitar.exe


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: Hyun Choi

Discovered: May 03, 2005
Updated: February 13, 2007 12:38:26 PM
Type: Worm
Systems Affected: Windows


The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.

  1. Disable System Restore (Windows Me/XP).
  2. Update the virus definitions.
  3. Run a full system scan and delete all the files detected as W32.Antiman.E@mm.
  4. Delete any values added to the registry.
For specific details on each of these steps, read the following instructions.

1. To disable System Restore (Windows Me/XP)
If you are running Windows Me or Windows XP, we recommend that you temporarily turn off System Restore. Windows Me/XP uses this feature, which is enabled by default, to restore the files on your computer in case they become damaged. If a virus, worm, or Trojan infects a computer, System Restore may back up the virus, worm, or Trojan on the computer.

Windows prevents outside programs, including antivirus programs, from modifying System Restore. Therefore, antivirus programs or tools cannot remove threats in the System Restore folder. As a result, System Restore has the potential of restoring an infected file on your computer, even after you have cleaned the infected files from all the other locations.

Also, a virus scan may detect a threat in the System Restore folder even though you have removed the threat.

For instructions on how to turn off System Restore, read your Windows documentation, or one of the following articles:
Note:
When you are completely finished with the removal procedure and are satisfied that the threat has been removed, reenable System Restore by following the instructions in the aforementioned documents.

For additional information, and an alternative to disabling Windows Me System Restore, see the Microsoft Knowledge Base article: Antivirus Tools Cannot Clean Infected Files in the _Restore Folder (Article ID: Q263455).

2. To update the virus definitions
Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions:
  • Running LiveUpdate, which is the easiest way to obtain virus definitions: These virus definitions are posted to the LiveUpdate servers once each week (usually on Wednesdays), unless there is a major virus outbreak. To determine whether definitions for this threat are available by LiveUpdate, refer to the document: Virus Definitions (LiveUpdate).
  • Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted daily. You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to the document: Virus Definitions (Intelligent Updater).

    The latest Intelligent Updater virus definitions can be obtained here: Intelligent Updater virus definitions. For detailed instructions read the document: How to update virus definition files using the Intelligent Updater.


3. To scan for and delete the infected files
  1. Start your Symantec antivirus program and make sure that it is configured to scan all the files.
  2. Run a full system scan.
  3. If any files are detected as infected with W32.Antiman.E@mm. click Delete.

    Note:
    If your Symantec antivirus product reports that it cannot delete an infected file, Windows may be using the file. To fix this, run the scan in Safe mode. For instructions, read the document: How to start the computer in Safe Mode. Once you have restarted in Safe mode, run the scan again.

    After the files are deleted, restart the computer in Normal mode and proceed with section 4.

    Warning messages may be displayed when the computer is restarted, as the threat has not been fully removed at this point. Please ignore these messages and just click OK. These messages will not appear when the computer is restarted after the removal instructions have been fully completed. The messages displayed may be similar to the following:

    Title: [File path]
    Message body: Windows cannot find [file name]. Make sure you typed the name correctly, and then try again. To search for a file, click the Start button, and then click Search.

4. To delete the value from the registry
Important: Symantec strongly recommends that you back up the registry before making any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified subkeys only. For instructions refer to the document: How to make a backup of the Windows registry.
  1. Click Start > Run.
  2. Type regedit
  3. Click OK.

  4. Navigate to the subkey:

    HKEY_CURRENT_USER\Control Panel\Desktop

  5. In the right pane, delete the value:

    "ScreenSaveTimeOut" = "300"

  6. Navigate to the subkey:

    HKEY_CURRENT_USER\Control Panel\Desktop

  7. In the right pane, delete the value:

    "SCRNSAVE.EXE" = "%Windir%\antimanele.scr"

  8. Navigate to the subkeys:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run

  9. In the right pane, delete the value:

    "Services" = "%Windir%\services.exe"

  10. Exit the Registry Editor.


Writeup By: Hyun Choi