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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2004.0310 -- Trend Micro MEDIUM Risk Virus Alert WORM_NETSKY.AB and WORM_BAGLE.Z 30 April 2004 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Publisher: Trend Micro Operating System: Windows Impact: Execute Arbitrary Code/Commands Comment: The following two Trend Micro virus alerts provide information on the recent detections of the Netsky.AB and Bagle.Z viruses. Further information is available from additional anti-virus vendors, as listed below. Netsky.AB - - http://www3.ca.com/threatinfo/virusinfo/virus.aspx?id=39001 - - http://www.f-secure.com/v-descs/netskyab.shtml - - http://us.mcafee.com/virusInfo/default.asp?id=description&virus_k=124873 - - http://www.sophos.com/virusinfo/analyses/w32netskyab.html - - http://securityresponse.symantec.com/avcenter/venc/data/w32.netsky.ab@mm.html Bagle.Z (aka Beagle.X, Bagle.aa) - - http://www3.ca.com/threatinfo/virusinfo/virus.aspx?id=39002 - - http://www.f-secure.com/v-descs/bagle_z.shtml - - http://us.mcafee.com/virusInfo/default.asp?id=description&virus_k=124875 - - http://www.sophos.com/virusinfo/analyses/w32bagleaa.html - - http://securityresponse.symantec.com/avcenter/venc/data/w32.beagle.x@mm.html - --------------------------BEGIN INCLUDED TEXT-------------------- As of April 28, 2004 1:20 AM PST, TrendLabs has declared a Medium Risk Virus Alert to control the spread of WORM_NETSKY.AB. TrendLabs has received several infection reports indicating that this malware is spreading in Japan, Taiwan and Korea. There are also infections in Europe, particularly in France. This NETSKY variant propagates via email. To spread, it sends copies of itself via SMTP (Simple Mail Transfer Protocol). It harvests email addresses from files located in local drives C to Z, and with particular extension names. This malware also deletes Windows registry entries created by the BAGLE worm. TrendLabs will be releasing the following EPS deliverables: TMCM Outbreak Prevention Policy 108 Official Pattern Release 873 Damage Cleanup Template 327 For more information on WORM_NETSKY.AB, you can visit our Web site at: http://www.trendmicro.com/vinfo/virusencyclo/default5.asp?VName=WORM_NETSKY.AB ______________________________________________________________________ As of April 28, 2004 11:34 AM PST, TrendLabs has declared a Medium Risk Virus Alert to control the spread of WORM_BAGLE.Z. TrendLabs has received several infection reports indicating that this malware is spreading in Europe and the US. This BAGLE variant propagates via email and network shares. It drops a copy of itself in the Windows system folder as the following files: DRVDDLL.EXE DRVDDLL.EXEOPEN DRVDDLL.EXEOPENOPEN The attachment it sends out can have COM, CPL, EXE, HTA, SCR, VBS, and ZIP extension names. The email it sends out contains a message body only if the attached file is a .ZIP password-protected file. In its attempt to propagate through network shares, it drops copies of itself in folders that contain the string "shar" in their folder names. It also has backdoor capabilities. It creates a separate thread and listens to port 2535 for remote commands. This UPX-compressed malware runs on Windows 95, 98, ME, NT, 2000, and XP. TrendLabs will be releasing the following EPS deliverables: TMCM Outbreak Prevention Policy 109 Official Pattern Release 877 Damage Cleanup Template 329 For more information on WORM_BAGLE.Z, you can visit our Web site at: http://www.trendmicro.com/vinfo/virusencyclo/default5.asp?VName=WORM_BAGLE.Z - --------------------------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. 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 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 iQCVAwUBQJG3tCh9+71yA2DNAQIHWQP+ILvE/UdHTU5L73D4nTpUVsw55ey24G90 Bi2eM/3rTO2BMKzf6zHNoqZKksv+u7qLLFfYK8utcX2EmvYlcJmbLJWpxKvDqCwP 9rfsN7cgYvHxvO8I6t7iBQZZA4khxOEowdnhjQpKL6aIl/DpAMMHbncg7ApSysXG AL0D8nQqork= =iC0c -----END PGP SIGNATURE-----