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Virus Information

New Worm Virus Alert
W32.Mydoom.M@mmis

Virus Alert - July 26, 2004

 

A new virus was discovered today. W32.Mydoom.M@mmis a mass-mailing worm that opens a backdoor and uses its own SMTP engine to spread through email.

It affects systems running Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT and Windows XP.

The email has the following characteristics.

From: (the From address will be "Spoofed")

The + using the following display names at various domains:

Subject: (contains one of the following)

  • say helo to my litl friend
  • click me baby, one more time
  • hello
  • error
  • status
  • test
  • report
  • delivery failed
  • Message could not be delivered
  • Mail System Error - Returned Mail
  • Delivery reports about your e-mail
  • Returned mail: see transcript for details
  • Returned mail: Data format error

Body: The message body will be as follows, where one of each phrase/word in brackets will appear:

  • Dear user {[To address of mail]|of [domain of To address]},{
    {{M|m}ail {system|server} administrator|administration} of [domain of To
    address] would like to {inform you{ that{:|,}|}|let you know {that|the
    following}{.|:|,}}|||||}
    {We have {detected|found|received reports} that y|Y}our {e{-|}mail |}account
    {has been|was} used to send a {large|huge} amount of {{unsolicited{
    commercial|}|junk} e{-|}mail|spam}{ messages|} during {this|the
    {last|recent}} week.
    {We suspect that|Probably,|Most likely|Obviously,} your computer {had
    been|was} {compromised|infected{ by a recent v{iru}s|}} and now
    {run|contain}s a {trojan{ed|}|hidden} proxy server.
    {Please|We recommend {that you|you to}} follow {our |the |}instruction{s|}
    {in the {attachment|attached {text |}file} |}in order to keep your computer
    safe.
    {{Virtually|Sincerely} yours|Best {wishe|regard}s|Have a nice day},
    {[domain of To address] {user |technical |}support team.|The [domain of To
    address] {support |}team.}

  • {The|This|Your} message was{ undeliverable| not delivered} due to
    the following reason{(s)|}:
    Your message {was not|could not be} delivered because the destination
    {computer|server} was
    {not |un}reachable within the allowed queue period. The amount of time
    a message is queued before it is returned depends on local configura-
    tion parameters.
    Most likely there is a network problem that prevented delivery, but
    it is also possible that the computer is turned off, or does not
    have a mail system running right now.

  • Your message {was not|could not be} delivered within [random number]
    days:
    {{{Mail s|S}erver}|Host} [host used to send mail] is not responding.
    The following recipients {did|could} not receive this message:
    <[To address of mail]>
    Please reply to postmaster@{[domain of From address]|[domain of To address]}
    if you feel this message to be in error.
    The original message was received at [current time]{
    | }from {[domain of From address] [[host used to send mail]]|{[host used to
    send mail]|[[host used to send mail]]}}
    ----- The following addresses had permanent fatal errors -----
    {<[To address of mail]>|[To address of mail]}
    {----- Transcript of {the ||}session follows -----
    ... while talking to {host |{mail |}server ||||}{[domain of To
    address].|[host used to send mail]}:
    {>>> MAIL F{rom|ROM}:[From address of mail]
    <<< 50$d {[From address of mail]... |}{Refused|{Access
    d|D}enied|{User|Domain|Address} {unknown|blacklisted}}|554 <[To address of
    mail]>... {Mail quota exceeded|Message is too large}
    554 <[To address of mail]>... Service unavailable|550 5.1.2 <[To address of
    mail]>... Host unknown (Name server: host not found)|554 {5.0.0 |}Service
    unavailable; [[host used to send mail]] blocked using
    {relays.osirusoft.com|bl.spamcop.net}{, reason: Blocked|}
    Session aborted{, reason: lost connection|}|>>> RCPT To:<[To address of
    mail]>
    <<< 550 {MAILBOX NOT FOUND|5.1.1 <[To address of mail]>... {User
    unknown|Invalid recipient|Not known here}}|>>> DATA
    {<<< 400-aturner; %MAIL-E-OPENOUT, error opening !AS as output
    |}{<<< 400-aturner; -RMS-E-CRE, ACP file create failed
    |}{<<< 400-aturner; -SYSTEM-F-EXDISKQUOTA, disk quota exceeded
    |}<<< 400}|}
    The original message was included as attachment

  • {{The|Your} m|M}essage could not be delivered

Attachment: One of the following:

  • readme
  • instruction
  • transcript
  • mail
  • letter
  • file
  • text
  • attachment
  • document
  • message

.. with one of the following extensions:

  • .cmd
  • .bat
  • .com
  • .exe
  • .pif
  • .scr


More information is available at:


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