Hell yeah, I just got BOMBARDED with a couple hundred bounce messages from the MyDoom Virus, and I can say without question that I am not, nor have I ever been infected with th e MyDoom Virus.
Joel R. Helgeson Director of Networking & Security Services SymetriQ Corporation "Give a man fire, and he'll be warm for a day; set a man on fire, and he'll be warm for the rest of his life." ----- Original Message ----- From: "Bill Royds" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Sunday, February 08, 2004 10:26 AM Subject: RE: [Full-Disclosure] MyDoom virus sent is an earlier message with subject "Error" An earlier message sent to the Full Disclosure list was a copy of the Mydoom virus (since FD is not moderated). It shows a little how this virus is propagating and one reason for its fast spread and persistence. By using email addresses in files and saved email and also generating random addresses to the domains it finds, it is finding many more delivery addresses than previous viruses and using NDR responses to propagate to make multiple copies of itself to forward. Here is the email to FD with headers that I received with some annotation to show deceptions that virus practises to help propagate. The key header is the third Received: header Received: from helgeson.com (80-235-33-127-dsl.mus.estpak.ee [80.235.33.127]) by netsys.com (8.11.6p2-2003-09-16/8.11.6) with ESMTP id i18EnoU08477 for <[EMAIL PROTECTED]>; Sun, 8 Feb 2004 09:49:51 -0500 (EST) The message claims to be from [EMAIL PROTECTED], who is probably a member of the FD list, but who had absolutely nothing to do with the sending of the email. It was sent from host 80-235-33-127-dsl.mus.estpak.ee [80.235.33.127] (in Estonia) which was running the virus's SMTP engine, which fakes the SMTP HELO response to say it is helgeson.com. This seems to persuade some SMTP MTA's that it is not being forged, since the domain of nominal sender and the HELO domain are the same. If instead of reaching a valid recipient (such as [EMAIL PROTECTED] in this case), it had been sent to [EMAIL PROTECTED] (one of its made-up email addresses), the lists.netsys.com NDR bounce message would send the message back to [EMAIL PROTECTED] carrying the complete virus (as it doesn't analyse the message, just returns it as attachment in bounce message). [EMAIL PROTECTED] will be bombarded by the virus as if it were coming from [EMAIL PROTECTED], which may be on a whitelist and let through. So the virus manages to gain delivery through third parties as well as directly. AV programs that send warnings to the from address do even more harm to Joel, who had nothing to do with the virus other than once posting in FD. ================================================== Return-Path: <[EMAIL PROTECTED]> Received: from netsys.com (NETSYS.COM [199.201.233.10]) by mail2.zoneedit.com (Postfix) with ESMTP id D7D662EA976 for <[EMAIL PROTECTED]>; Sun, 8 Feb 2004 10:43:46 -0500 (EST) Received: from NETSYS.COM (localhost [127.0.0.1]) by netsys.com (8.11.6p2-2003-09-16/8.11.6) with ESMTP id i18EpXS09093; Sun, 8 Feb 2004 09:51:34 -0500 (EST) Received: from helgeson.com (80-235-33-127-dsl.mus.estpak.ee [80.235.33.127]) by netsys.com (8.11.6p2-2003-09-16/8.11.6) with ESMTP id i18EnoU08477 for <[EMAIL PROTECTED]>; Sun, 8 Feb 2004 09:49:51 -0500 (EST) Message-Id: <[EMAIL PROTECTED]> From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_NextPart_000_0004_830D6A05.0CE2EC43" X-Priority: 3 X-MSMail-Priority: Normal Subject: [Full-Disclosure] Error Sender: [EMAIL PROTECTED] Errors-To: [EMAIL PROTECTED] X-BeenThere: [EMAIL PROTECTED] X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: <http://lists.netsys.com/mailman/listinfo/full-disclosure>, <mailto:[EMAIL PROTECTED]> List-Id: Discussion of security issues <full-disclosure.lists.netsys.com> List-Post: <mailto:[EMAIL PROTECTED]> List-Help: <mailto:[EMAIL PROTECTED]> List-Subscribe: <http://lists.netsys.com/mailman/listinfo/full-disclosure>, <mailto:[EMAIL PROTECTED]> List-Archive: <http://lists.netsys.com/pipermail/full-disclosure/> Date: Sun, 8 Feb 2004 16:49:34 +0200 AS4à ÅËt_1ÃÃ.,8(Å9ÃÆW8EsââÃ_DÂjÅ1Ã_ÂÂâPÂÃU]ÃÂ5Ãà etc. ****************** McAfee VirusScan ************************ ******* Alert generated at: Sun, 08 Feb 2004 10:57:21 -0500 ********* ********************************************************************* McAfee VirusScan has detected a potential threat in this e-mail sent by [EMAIL PROTECTED] The following actions were attempted on each suspicious part. We strongly recommend that you report this virus-related activity to [EMAIL PROTECTED] The attachment "doc.zip" is infected with the W32/[EMAIL PROTECTED] Virus(es). This attachment has been cleaned. _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
