November 30, 1999 _____________________________ WARNING! New virus surfaces on the Internet! Worm.ExploreZip(pack) is a new version of Worm.ExploreZip. ** This virus SHOULD BE CONSIDERED DANGEROUS! ** REPAIR NOTES New definitions updates will be posted late in the evening of 11/30/99. SARC will update the site http://www.symantec.com/techsupp/vURL.cgi/nav20 with information about the updates when the new detection and repair definitions have been released. They will be available by simply running LiveUpdate, or by downloading them from http://www.symantec.com/avcenter/download.html MANUAL REPAIR NOTES To remove this worm manually, perform the following steps: 1. Remove the line run=C:\WINDOWS\SYSTEM\Explore.exe from the WIN.INI file. 2. Delete the file "C:\WINDOWS\SYSTEM\EXPLORE.EXE." You might need to reboot first if the file is in use. DETAILS OF INFECTION PROCESS The worm utilizes MAPI-capable e-mail programs on Windows systems to propagate itself. The worm e-mails itself out as an attachment with the filename "zipped_files.exe." The body of the e-mail message might appear to come from a known e-mail correspondent and contains the following text: I received your email and I shall send you a reply ASAP. Till then, take a look at the attached zipped docs. Once the attachment is opened/executed, it will unpacked itself and execute the original Worm.ExploreZip routine. It might display an error message informing the user that the file is not a valid archive. The worm proceeds to copy itself to the c:\windows\system directory with the filename "Explore.exe" and then modifies the WIN.INI file so that the program is executed each time Windows is started. The worm then utilizes your e-mail client to harvest e-mail addresses in order to propagate itself. Users may notice that their e-mail client launches when this occurs. ======================================== Avenir Web's Computers Mailing List List Modes, Subscription, and General Info: Go to http://avenir.dhs.org/mailing.html List Archives: http://avenir.dhs.org/archives/ Administrative Contact: webmaster@xxxxxxxxxxxxxx Get computer help: http://avenir.dhs.org ========================================