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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Copyright 2001 Internet Security Systems (trademark) THE POWER TO PROTECT INTERNET THREAT & SOLUTIONS UPDATE for Sept 28th - Oct 1st, 2001 ISS X-Force Special Operations Group - -------------------------------------- CURRENT THREAT ASSESSMENT & THREAT FORECAST - -------------------------------------- AlertCon 2 Today, September 28th-30th, 2001 AlertCon 1 AlertCon 1 for Oct 1st, 2001 Today's Focus: Return of Nimda Worm ************* - - We raised the AlertCon to 2 (increased vigilance) yesterday evening to bring attention to a new wave of the Nimda Worm, arriving by multiple ports. We're projecting AlertCon 1 on Monday. - - Our monitored networks are experiencing much higher alarm levels on the Nimda signatures compared to this time yesterday. - --------------------------------------- SOLUTIONS - --------------------------------------- Nimda Solutions: - - Re-install patches previously instructed by ISS and software vendors for IIS vulnerabilities, etc. - - Get management involved to help you marshal the resources you need to patch everything and keep it patched. Remember that whenever OS are installed or reinstalled if the patches are not also included you have left gaping holes in your network. The same is true for anti-virus updates. All patches from the date of the OS you are installing must be manually researched and installed. The Microsoft 'mega patch' at the link below is a big help in this effort. - - Users everywhere are reminded that one of the features of Nimda is randomly booby-trap web sites throughout the Web. Opening an infected site invites Nimda infection via Java script. Networks with strong, updated gateway protection notify the user and strip the malicious logic from the packet stream. Small office and home networks may have less protection but should be moving rapidly towards commercial anti-virus solutions. - - Microsoft's web site has the full solution set for its products at this site: <http://www.microsoft.com/technet/treeview/default.asp?url=/technet/sec urity/topics/Nimda.asp> - - All the major anti-virus vendors now have Nimda solutions. Aris has an excellent write-up on the Worm and some further links to security solutions: <http://aris.securityfocus.com/alerts/nimda/010919-Analysis-Nimda.pdf> - ------------------------------------- Attack Signatures - global IDS, midnight - midnight, previous day, % of total - ------------------------------------- Unauth Access Attempts 41.68% Protocol Decode 32.94% Denial Of Service 13.12% Suspicious Activity 06.27% Pre-Attack Probe 05.99% Back Doors 00.01% - ------------------------------------- Top Ten Destination Ports - global IDS, midnight - midnight, previous day, % of top ten (ports found at http://www.iana.org/assignments/port-numbers - ------------------------------------- 80 (http) 92.63% 53 (dns) 02.75% 25 (smtp) 02.08% 21 (ftp) 01.56% 443 (https) 00.27% 143 (imap) 00.22% 123 (ntp) 00.15% 139 (netbios-ss) 00.11% 15104 (unassigned) 00.11% 6768 (bmc-perf-mgrd) 00.10% - --------------------------------------- VIRUS, VULNERABILITY, NEWS UPDATES - --------------------------------------- - - Visit <http://www.iss.net/> under 'Global Internet Threat Intelligence Service' - --------------------------------------- Web Defacements - --------------------------------------- - - Alldas.de stats show that since April, 2000, the most defaced OS is Windows, with a total of 14,946 defacements reported, for 66% of the total. Linux is a distant second with 3712 defacements for 16% of the total. - - Alldas reports 46 web defacements yesterday, Sept 27th, and 16 so far today (as of 1130 GMT). These numbers are below average. - - I checked the mirrors for political content and noted the same basics we have seen in the past - children who haven't a clue but who are clever with computers. The sites they defaced presented no apparent pattern (i.e. no connection to the message on the defacement). - - The Brazilian group Cyb3rAttack had a pro Palestinian, "glad they did it", anti-US message. <http://defaced.alldas.de/mirror/2001/09/27/www.meteomedia.ch/> - - Another Brazilian group, ere.Corp, also had an anti-US, pro Usama bin Ladin message. <http://defaced.alldas.de/mirror/2001/09/27/www.labbb.org/> - - TeckLife, another Brazilian group, had an anti Bush, anti-US message. <http://defaced.alldas.de/mirror/2001/09/27/www.fopep.com.co/> - - The group Hax0rs Lab had an anti government and Osama message. <http://defaced.alldas.de/mirror/2001/09/27/www.wallonia.com/> - - The Group Brazil Hackers Sabotage (BHS) did have clips of the plane strikes on the WTC and the face of the devil in the smoke but the tone did not show any sympathy for the terrorists. <http://defaced.alldas.de/mirror/2001/09/27/nortel-lab.tsinghua.edu.cn/ > - --------------------------------------- NOTE, DISCLAIMER AND COPYRIGHT NOTICE - --------------------------------------- NOTE: Our web site has this information in more attractive format and graphics available to the public at no cost at <http://www.iss.net/> under 'Global Internet Threat Intelligence Service'. Screen captures (Control/PrtSc) of the site's pages dropped into PowerPoint can be an effective way to communicate various aspects of the Internet threat, e.g. the graph depicting 'AlertCon Trends'. We provide this information on Internet threat metrics, viruses, vulnerabilities, patches, and breaking news, in the spirit of PDD 63, to help security professionals wage the war against Internet threats more effectively. Information in this update derived primarily from global, real time, 24 x 7 IDS feeds, ISS X-Force R&D Team research, and professional liaison. Other sources as noted. AlertCon 1 reflects the global, malicious, determined, 24 x 7 attacks experienced by all networks. AlertCon 2 means increased vigilance/action recommended due to a specific threat or concern. AlertCon 3 means increased attacks against specific targets or vulnerabilities on a scale that is unusually high, action required. AlertCon 4 reflects an Internet emergency for a target or group of targets whose business continuity may depend on some sort of immediate, decisive action. All summaries cover 24 hours the previous workday, GMT. Monday summaries may cover some weekend activity. Copyright 2001 Internet Security Systems, Inc. Permission is granted for the redistribution of the Internet Threat Update electronically. It is not to be sold or edited in any way without express consent of ISS. Refer comments or questions to <[EMAIL PROTECTED]> . Disclaimer: This information is subject to change without notice. Use of this information constitutes acceptance for use in an 'as is' condition. There are no warranties with regard to this information. In no event shall the author be liable for any damages whatsoever arising out of or in connection with the use or spread of this information. Any use of this information is at the user's own risk. No other use authorized. FOIA Exemption 4.
