From: worley@a.cs.okstate.edu (WORLEY LAWRENCE JA)
Subject: PKZip 3.05 VIRUS WARNING
Organization: Oklahoma State University
Date: Wed, 6 Jan 93 01:25:38 GMT

Netters-
  I know this is the wrong group for this, but I have received enough
requests to re-post this letter that I feel it is worth spending the 
bandwidth on.  This is a re-post of a letter sent to me on approx. 10-15-92
concerning an infected copy of PKZip 3.05 (a bogus version).  I have heard
more recent accounts of this program causing serious problems.  Please read
the following, and beware of any PKZip 3.x that you come across.

-Jason Worley

============================================================================
ORIGINAL LETTER BEGINS HERE
============================================================================


     This is an exact copy of a "Broadcast" letter sent to all members and
affiliates of THIEVCO INC; a group located somewhere in the San Francisco Bay
Area. While I do not support the general theology of Thievco Inc, I must
applaud thier actions. Thier warnings about a new virus called PROTO-T, will
potentially save us computer users possibly thousands of dollars - and
hundreds of man hours.
     Here is a copy of the broadcast letter, as received from a friend
at Thievco ...

  <<*>>     <<*>>     <<*>>     <<*>>     <<*>>     <<*>>     <<*>>     <<*>>

Retrieved BLUWAV 6921 / THIEV 00621*420 - Node 1:8 Sent T-Tymnet

     Date    : 9/24/92 11:14pm
     To      : All Thievco Members, and affil.
     Re      : PROTO - T
     Class   : Confidential (go public 9-26)


     Dear Members,

     At 7:34PM (pst) our attempt to isolate and contain the PROTO - T
virus failed. As we have discovered, PROTO - T has a *VERY* unique
feature, to hide in the RAM of VGA cards, hard disks, and possibly,
in modem buffers. Unfortunaly, we found out the hard way - after it struck.
At this time, there is no known defence against this virus, save formatting
your hard/floppy disks - there isn't even a method of detecting it yet...
untill its too late. [ PROTO - T specs listed later ].
     Unearthly Vision ( Portland, Oregon ), and Chron ( Alameda, Calif )
were working on isolating the virus when it struck. Over 900 megabytes
of information was lost, of that about 214 megabytes is probably recoverable.

Action :

     Please assist us in implementing this plan, to warn the general public.
Our first priority is our fellow THIEVCO members. Please distribute this
letter to all contacts inside the U.S., upon recipt of this letter.
Please inform the public on 9-26-92. Start warning the elite boards first,
followed by the P.D. boards. Dont bother telling known SPA locals, they aren't
worth our time.

     Blue Boar - Distribute the warning in Southern California, start
with L.A. first.
     Chron     - Distribute to San Francisco, Sacramento, and south east coast.

     Garfield  - Distribute to Fido-Net, Vet-Net, Compuserve, and America
                 Online.

Unearthly Vision - Distribute to Oregon, and Washington.

 Executioner   - Distribute to San Jose, Monterey.


--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=

What is known:

   Proto - T was just a rumor, untill it was confirmed a few weeks ago.
Chron, being the most incredible skip-tracer, traced its origins to a
college campus in California. There, it was placed into two files.
The first, is a file called "TEMPLE" - which to our knowledge, has no
legitimate use; it seems to be a dummy file. The other file, was
placed in an unathorized version of PKZip by PKWare ( versions 3.0, and 3.1 -
these are not legitimate versions of PKZip! Quite possibly, these versions
of PKZip were created, for the reason of distributing PROTO - T ).

    Proto - T is very elusive. There is no program known to detect it.
From what we understand, it will only infect your system if certian
conditions are met. From what we know, it will infect your system only if
you run TEMPLE, or PKZip 3.x after 6:00pm. Even doing that wont nessaraly
cause infection - it took 6 days for Chron and Unearthly Vision to become
infected. Obviously some other criteria must be met.
    Upon infection, the virus is written (as un-attached file chains), On two
parts of a hard disk - each capable of running independently without the
other half.
    After infection, the virus seems to be written into the memory or memory
routines of a VGA or EGA monitor; or is written into the memory of the hard
drive, or quite possibly, into a modem - or COM port. Thus excaping most or
any known detection methods.

PROTO - T :

     Proto - T when activated, corrupts data on a disk, stops VGA or EGA
from being used ( Thus either defaulting to CGA, or locking up ), and
prohibits memory from being used over 512K.

Known to be put into two files : TEMPLE.EXE ( 14,771 Bytes ) and PKZip 3.x
(Varries always over 100,000 bytes when zipped). If you see these files -
do not get or use them.

Give this letter to all Thievco members and thier contacts, followed by
other boards.
With luck, we can stop the damage before it *REALLY* starts.

                                          THIEVCO INC, San Francisco Bay Area.


 Special Thanks for Chron, Unearthly Vision, and Blue Boar for all thier
help with this "Early warning" and tech help.

Newsgroups: comp.sys.ibm.pc.hardware