(1 / 3)
Date: February 08, 1992 11:08
From: GAWD::SHEPPERD
To: @SYS$MAIL:PC-USERS
CC: SHEPPERD
This came over the wire today...Do you know where your floppies have been? =========================================================================== CA-92:02 CERT Advisory February 6, 1992 Michelangelo PC Virus Warning --------------------------------------------------------------------------- The Computer Emergency Response Team/Coordination Center (CERT/CC) has received information concerning a personal computer virus known as Michelangelo. The virus affects IBM PCs and compatibles. A description of the virus, along with suggested countermeasures, is presented below. --------------------------------------------------------------------------- I. Description The Michelangelo virus is a computer virus that affects PCs running MS-DOS (and PC-DOS, DR-DOS, etc.) versions 2.xx and higher. Note, however, that although the virus can only execute on PCs running these versions of DOS, it can infect and damage PC hard disks containing other PC operating systems including UNIX, OS/2, and Novell. Thus, booting an infected DOS floppy disk on a PC that has, for example, UNIX on the hard disk would infect the hard disk and would probably prevent the UNIX disk from booting. The virus infects floppy disk boot sectors and hard disk master boot records (MBRs). When the user boots from an infected floppy disk, the virus installs itself in memory and infects the partition table of the first hard disk (if found). Once the virus is installed, it will infect any floppy disk that the user accesses. Some possible, though not conclusive, symptoms of the Michelangelo virus include a reduction in free/total memory by 2048 bytes, and some floppy disks that become unusable or display "odd" graphic characters during "DIR" commands. Additionally, integrity management products should report that the MBR has been altered. Note that the Michelangelo virus does not display any messages on the PC screen at any time. II. Impact The Michelangelo virus triggers on any March 6. On that date, the virus overwrites critical system data, including boot and file allocation table (FAT) records, on the boot disk (floppy or hard), rendering the disk unusable. Recovering user data from a disk damaged by the Michelangelo virus will be very difficult. III. Solution Many versions of anti-virus software released after approximately October 1991 will detect and/or remove the Michelangelo virus. This includes numerous commercial, shareware, and freeware software packages. Since this virus was first detected around the middle of 1991 (after March 6, 1991), it is crucial to use current versions of these products, particularly those products that search systems for known viruses. The CERT/CC has not formally reviewed, evaluated, or endorsed any of the anti-virus products. While some older anti-virus products may detect this virus, the CERT/CC strongly suggests that sites verify with their anti-virus product vendors that their product will detect and eradicate the Michelangelo virus. The CERT/CC advises that all sites test for the presence of this virus before March 6, which is the trigger date. If an infection is discovered, it is essential that the user examine all floppy disks that may have come in contact with an infected machine. As always, the CERT/CC strongly urges all sites to maintain good backup procedures. --------------------------------------------------------------------------- The CERT/CC wishes to thank for their assistance: Mr. Christoph Fischer of the Micro-BIT Virus Center (Germany), Dr. Klaus Brunnstein of the Virus Test Center (Germany), Mr. A. Padgett Peterson, P.E., of the Technical Computing Center at Martin-Marietta Corp., and Mr. Steve R. White of IBM's Thomas J. Watson Research Center. --------------------------------------------------------------------------- If you believe that your system has been compromised, contact CERT/CC or your representative in FIRST (Forum of Incident Response and Security Teams). Internet E-mail: [email protected] Telephone: 412-268-7090 (24-hour hotline) CERT/CC personnel answer 7:30 a.m.-6:00 p.m. EST(GMT-5)/EDT(GMT-4), on call for emergencies during other hours. Computer Emergency Response Team/Coordination Center (CERT/CC) Software Engineering Institute Carnegie Mellon University Pittsburgh, PA 15213-3890 Past advisories, information about FIRST representatives, and other information related to computer security are available for anonymous ftp from cert.sei.cmu.edu (192.88.209.5).
(2 / 3)
Date: February 10, 1992 10:14
From: GAWD::SHEPPERD
To: @SYS$MAIL:PC-USERS
CC: SHEPPERD
I have a copy of the latest McAfee virus checker and zapper that will find the Michangelo virus along with about 1200 others. I will not loan out this disk, but I will run it on your system if you want. ds
(3 / 3)
Date: February 21, 1992 09:09
From: MIKE::SMITH
To: @SYS$MAIL:JUNK
I heard a good suggestion on the "SILICON VALLEY REPORT", Channel 54, last nite. They said that the virus could be defeated easily if, on March 5 on March 5th, you change your computer date to March 7th. Just skip the day of March 6. The virus is set to attack if the date is equal to March 6, 1992 only. If the virus never sees March 6, it just remains dormant forever. See the difference between "EQUAL TO" an "EQUAL TO OR GREATER THAN".
Feb 08, 1992