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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2004.0513 -- Trend Micro MEDIUM Risk Virus Alert WORM_RATOS.A (MyDoom.S, MyDoom.Q, MyDoom.R) 17 August 2004 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Publisher: Trend Micro Operating System: Windows Impact: Execute Arbitrary Code/Commands Ref: AL-2004.02 AU-2004.010 Comment: The following Trend Micro virus alert provides information on the recent detection of the RATOS.A virus. Further information is available from additional anti-virus vendors as listed below. MyDoom.S http://www3.ca.com/securityadvisor/virusinfo/virus.aspx?id=39890 http://vil.nai.com/vil/content/v_127616.htm http://www.sophos.com/virusinfo/analyses/w32mydooms.html http://www.f-secure.com/v-descs/mydoom_s.shtml MyDoom.R http://www.pandasoftware.com/virus_info/encyclopedia/overview.aspx?IdVirus=50987&sind=0 MyDoom.Q http://securityresponse.symantec.com/avcenter/venc/data/w32.mydoom.q@mm.html - --------------------------BEGIN INCLUDED TEXT-------------------- As of Aug 16, 2004 12:10 AM (GMT -7:00), TrendLabs has declared a Medium Risk Virus Alert to control the spread of WORM_RATOS.A. TrendLabs has received several infection reports indicating that this malware is spreading in Japan, Korea and the United States. This worm spreads via email with the following details: - ------ Subject: photos Message body: LOL!;)))) Attachment: photos_arc.exe - ------ Upon execution, it drops a copy of itself as the following files: • %Windows%\RASOR38A.DLL • %System%\WINPSD.EXE (Note: %System% refers to the Windows system folder, which is usually C:\Windows\System on Windows 95, 98, and ME, C:\WINNT\System32 on Windows 2000 and NT, and C:\Windows\System32 on Windows XP. Note: The Windows system folder is usually C:\Windows\System on Windows 95, 98, and ME, C:\WINNT\System32 on Windows 2000 and NT, and C:\Windows\System32 on Windows XP.) It downloads copies of a backdoor component file from several URLs and saves it as WINVPN32.EXE in the Windows folder. This worm usually arrives UPX-compressed and runs on Windows 95, 98, ME, NT, 2000, and XP. TrendLabs will be releasing the following EPS deliverables: TMCM Outbreak Prevention Policy 126 (available) Official Pattern Release 1.957.00 (available) Damage Cleanup Template 394 (to be released) Network Virus Pattern 10136 (to be released) TrendLabs is currently working to provide a more in-depth analysis of this malware. You can visit our Web site for more updates on WORM_RATOS.A: http://www.trendmicro.com/vinfo/virusencyclo/default5.asp?VName=WORM_RATOS.A Contact av_query@support.trendmicro.com for inquiries and to report infections in your region. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBQSFQzih9+71yA2DNAQLZ1gQAlZhqoU75nSWQCMWjzsWzx4CHxMmma26H /WKlYOsoGy2oJrCTOqTnJHab96gbqjzlFjIsVuHCSZJUJu22pBDRN39UhIaXU8rK Chp8gHxhQnqMvTc85V2kYX8vWubtv363GTgzLfyrxZxNJ2PW0PrfNrgX44ArM10p Uae9jtkPZsY= =QDoQ -----END PGP SIGNATURE-----