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-
-
- The Slovakian Virus Scene
- by
- Qark [VLAD]
-
-
- Since the death of Bulgaria as the virus centre of the world two or three
- years ago, America's recent decline (another story) and the death of
- Trident in the Netherlands, the normal places we think of as virus capitals
- have moved. Sweden has always been a hotbed of activity, but recently
- Taiwan, Australia, Russia and Slovakia have improved in focus.
-
- Slovakia is a small country, being the 'other' half of the former united
- czechoslovakia, but it has two virus groups, and a seemingly large interest
- in computer viruses.
-
- When the MtE used to be a very popular polymorphic engine, there was
- another, not so well known but advanced polymorphic virus called
- Slovakia 4.0, the last member of the Slovakia series. It was as good as
- the MtE, although it used different techniques. This virus became quite
- common in Slovakia. At that time, SCAN only used algorithmic detection
- for two things, the MtE and the Slovakias. Also, according to Patricia
- Hoffmans VSUM these two were the only strongly polymorphic systems.
- Slovakia 4.0 was the last virus this author has created (as far as is
- known).
-
- The most famous virus from Slovakia must be OneHalf virus by Vyvojar. It is
- the second part of the Explosion series. It has spread all over Europe
- and reached the US, thus being clasified as a "common virus". OneHalf
- is a light polymorphic COM/EXE/MBR infector. It utilises a special
- construction of jumps to distribute the decryptor into 10 pieces all over
- the host code (kind of what Commander Bomber does, but in simplified form).
- Removing the virus using the popular "FDISK /MBR" usually causes the user
- serious trouble as two tracks are encrypted each time the computer is
- rebooted and the virus decrypts the data on the fly, so the system becomes
- addicted to the virus. This makes it a very popular topic in [anti]virus
- forums.
-
- Level_3 is the third and final virus in the Explosion series. It implements
- EMM1_0 (Explosion's Mutation Machine 1.0), one of today's most advanced
- polymorphic engines. There are 2 phases of decryption, one is a linear and
- about 700 bytes long, full of conditional jumps (it emulates it's own
- code to determine instruction flow). The first phase decrypts the real
- decryptor of the virus (which is a simple loop). This is why it can't be
- discovered by a simple decryption routine detector. TBAV only catches a few
- samples by mistake. The source code can be found in 40hex-14.
-
- Vyvojar (the author of the viruses mentioned above) announced the end of
- his virus writing activities because of school graduation and being busy
- with different things. This is the end of the career of a virus writing
- great.
-
- Although unknown by most, Slovakia is also home to a virus writing group
- with three members called the Slovak Virus Laboratories (SVL) who have
- written a few quality viruses. The members of the group are JohnyX,
- Mengele and The Professor.
-
- The following is a translation of an article they wrote for a popular
- Slovakian magazine.
-
- This article was originally published in a computer magazine called
- PC-REVUE issue 2/95 in a column "VIRUS RADAR", which is dedicated to new
- viruses in Slovakia. This article was translated from the Slovak language,
- with notes indicated using square brackets.
-
- ------8<-------------------------------------------------------------->8---
-
- On the computer, at the end of the year 1994
-
- Dear friends, we wish you all the best in the New Year 1995, in the name of
- the Slovak Virus Laboratories (SVL). We have picked this unusual kind of
- New Years Greeting (well, we write unusual viruses as well, and one must
- admit they're not the worst either), because we are sure that our favourite
- VIRUS RADAR will mention it. To show our goodwill, we enclose the source
- code of SVL 1.2, which has been discussed recently (we really are the
- authors, don't doubt it).
- A few words about SVL: we're cheerful guys, who are interested in Fred
- Flintstone's philosophy (except our Development Chief, who is only
- interested in girls and beer), as well as in writing tasty and juicy
- viruses. The group was founded spontaneously about 3 years ago in a bar,
- while discussing the advantages of vodka combined with juice against pure
- vodka. First we did nothing, but then we started to do some freelance
- production. We have achieved several successes, we even got into the
- newspapers (we have to mention one successful boot virus, the last one in
- former Czechoslovakia [translator's note: Czechoslovakia split into Czech
- and Slovakia in 1993; the "successful boot virus" seems to be J&M, which
- formats partition table on November 15, although I assume that the virus
- comes from Czech originally]).
- Also in August we managed to do something, partly because one of our
- irresponsible members forgot to change the text in the source to "GET AWAY
- FROM THE COMPUTER, IT'S SUMMER !!!" and left it the way it was (he had to
- be extremely polite to all SVL members for a month). After a time of
- lethargy we released SVL 1.1 and 1.2. In order to prevent rumors about
- preparing something like SVL 1.5896, we announce that there is not and
- never will be any version 1.x (besides 1.1 and 1.2). However, the world
- keeps turning round pervertly and so we will keep writing viruses, which
- will keep the writers of antiviral software alive (they should at least
- support Ahmed Semtex's group in their fight against the Windows threat).
- Shouting "LET'S ATTACK IN THE NEW YEAR" [translator's note: it rhymes in
- Slovak language, of course :)], we prepare hot news - SVL 2.0 - It will
- appear on your computers in the first or the second half of the year.
- Actually, it is our personal response to EXPLOSION [translator's note:
- Explosion is the first one of the row "Explosion, One_Half and Level_3"].
- Finally, we would like to send some hot STEALTH greetings to our favourite
- Virus Radar, Vyvojar [note: that's the nick of the guy who wrote the
- Explosion series]. Addititonally, we would like to express our unlimited
- admiration to the players, who broke the Guiness Record (none of us has
- ever played a computer game for more than 40 hours) [note: there was an
- attempt to beat the Guiness Record in length of playing the computer games
- in Bratislava (the capital of Slovakia) in December '94. The current record
- is about 175 hours]. We wish you enough cheap and high-quality software and
- don't forget:
- If you don't want to have your computers infected, don't buy them!!!
-
- Yours Sincerely,
- Press Manager of SVL
-
- P.S. The only virus that infected us in 1994 (besides flu, we all caught
- it) was OneHalf. We congratulate the author and we offer a meeting
- sometime in the future.
-
-
- ------8<-------------------------------------------------------------->8---
-
- Another quality virus from Slovakia is the Lion King virus which is a
- polymorphic stealth COM/EXE infector written by an unknown author who
- identifies himself as LST.
-
-
-