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- ======================================================================
- == Computer Virus Catalog (Version 1.2) ==
- == *** 20 Atari Viruses *** ==
- ======================================================================
- == Status: Feburary 15, 1991 ==
- == Classified: 6 Atari viruses (ATARIVIR.A89): Nov. 15, 1989 ==
- == +12 Atari viruses (ATARIVIR.690): June 5, 1990 ==
- == + 2 Atari viruses (ATARIVIR.291): Feb. 15, 1991 ==
- ======================================================================
- == List of 20 classified Atari Viruses: =Doc=
- == ------------------------------------ =---=
- == 1) ACA Virus =690=
- == 2) ANTI-2 Virus =690=
- == 3) ANTHRAX = Milzbrand Virus =A89=
- == 4) Blot Virus =690=
- == 5) c't Virus =A89=
- == 6) Emil 1A Virus = "Virus 1A" =A89=
- == 7) Emil 2A Virus = "Virus 2A" = mad Virus =A89=
- == + 8) Freeze Virus =291=
- == + 9) Gauweiler Virus =291=
- == 10) Goblins Virus =690=
- == 11) Kobold 2 Virus =690=
- == 12) Lab Virus =690=
- == 13) Mad Virus =690=
- == 14) Maulwurf (=Mole) Virus =690=
- == 15) Mouse (Inverter) Virus =A89=
- == 16) Oli Virus =690=
- == 17) Pirate Trap Virus =690=
- == 18) Screen Virus =690=
- == 19) Zimmermann-Virus =A89=
- == 20) 5th Generation Virus =690=
- == ==
- == Remark: new entries are marked "+" in column 13; the suffix (A89,==
- == 690,291) refers to the documents where entry is published. ==
- == ==
- == We have problems to get Atari viruses, as many users wish to ex- ==
- == change their viruses (like stamps) against our's, which we gene- ==
- == rally refuse: the Virus Test Center's ethical standard says, that =
- == we do not help to spread viruses! Please send infected programs ==
- == without preconditions; we may only then continue our work. ==
- ======================================================================
-
- ====== Computer Virus Catalog 1.2: Freeze Virus (31-January-1991) ====
- Entry...............: "Freeze" Virus
- Alias...............: ---
- Strain..............: ---
- Detected when.......: October 1988
- where......: Helmond (Netherlands)
- Clssification.......: System (bootsector) virus, overwriting
- Length of virus.....: 512 Bytes
- ------------------------Preconditions---------------------------------
- Operating System(s).: Atari TOS
- Version\Release.....: All versions
- Computer models.....: All Atari ST
- -------------------------Attributes-----------------------------------
- Easy identification.: The words : $487A,$0010 can be found in the boot
- sector at Positon $100, or in memory at
- :phystop-$300+$100 (all: hex).
- Type of infection...: Executable bootsectors are not infected.
- Infection Trigger...: Execution of BIOS disk functions.
- Media affected......: The virus infects drive A and B.
- Interrupts hooked...: Timer interrupt installed for damage; hdv_bpb
- changed to infect bootsector of new disk.
- Damage..............: Every second the timer-routine increases a delay
- counter by 1 and then counting it down to
- zero; this will slowdown the system.
- Damage trigger......: When the virus is booted.
- Particularities.....: If harddisk SH204 is connected, the virus
- causes an address error and will not be
- installed.
- Similarities........: The same installation routine as MAD virus; only
- different damage action and damage trigger.
- ----------------------------------------------------------------------
- Countermeasures.....: Make sure that virus is not in memory; modify
- last byte in bootsector to another value.
- Standard means......: Clear all bytes in bootsector beginning at
- offset 30 (decimal).
- -----------------------Acknowledgements-------------------------------
- Location............: Virus Test Center, University of Hamburg FRG
- Classification by...: Thomas Piehl
- Documentation by....: George R. Woodside
- Date................: 31-January-1991
- ===================== End of FREEZE Virus ============================
-
- === Computer Virus Catalog 1.2: "Gauweiler" Virus (31-January-1991) ==
- Entry...............: "Gauweiler" Virus
- Alias(es)...........: ---
- Virus Strain........: ---
- Virus detected when.: November 1990 (?origin)
- where.: Kassel, FRG (?)
- (when/from where VTC received the sirus code)
- Classification......: Bootsector virus
- Length of Virus.....: 510 Bytes
- --------------------- Preconditions ----------------------------------
- Operating System(s).: Atari-TOS
- Version/Release.....: 1.0, 1.2 ,1.4
- Computer model(s)...: All types of the Atari ST series
- --------------------- Attributes -------------------------------------
- Identification......: At the end of the boot sector, following text
- "AIDS" and "Gauweilers Rache V 3.0 4.7.88";
- at the begin of bootsector: $52F6498A (hex).
- Remark: Dr. Gauweiler is a Bavarian politician
- well known for his resentments against people
- seeking asylum in Bavaria.
- Type of infection...: Infects bootsector of the disk A, if it is
- regarded to be uninfected, or if an old
- version of this virus is on bootsector (V2.0).
- Infection Trigger...: Check if bootsector is executable.
- Media affected......: Infection of disk in drive A.
- Interrupts hooked...: BIOS-trap used and changed by this virus.
- Damage..............: Infects the bootsector of the disk, if it is
- regarded to be uninfected; clears first
- 9 sectors of track 0 with the FAT.
- Damage Trigger......: If counter at start of virus + 6 modulo 32=0;
- value depends on number of infections.
- Particularities.....: ---
- Similarities........: ---
- --------------------- Agents -----------------------------------------
- Countermeasures.....: Programs that calculate bootsector's checksum
- and modify it, if = $1234. Then, the sector
- is regarded as not executable. The suspected
- more dangerous second part of the virus might
- not be recognized because it does not need
- to have the correct checksum.
- Countermeasures successful: ---
- Standard means......: Write-protect the disk; write an easily
- identifiable bootsector; "manually" change
- the checksum to a value other than $1234.
- --------------------- Acknowledgement --------------------------------
- Location............: Virus Test Center, University Hamburg, FRG
- Classification by...: Ralf Stegen
- Documentation by....: Ralf Stegen
- Date................: 31-January-1991
- Information Source..: ---
- ===================== End of "Gauweiler" Virus =======================
-
- =======================================================================
- == The Computer Virus Catalog may be copied free of charges provided ==
- == that the source is properly mentioned at any time and location ==
- == of reference. ==
- == ==
- == Editor: Virus Test Center, Faculty for Informatics ==
- == University of Hamburg ==
- == Schlueterstr. 70, D2000 Hamburg 13, FR Germany ==
- == Prof. Dr. Klaus Brunnstein, Simone Fischer-Huebner ==
- == Tel: (040) 4123-4158 (KB), -4175 (SFH), -4162(Secr.) ==
- == Email (EAN/BITNET): Brunnstein@RZ.Informatik.Uni-Hamburg.dbp.de ==
- =======================================================================
- == Critical and constructive comments as well as additions are ==
- == appreciated. Especially, descriptions of recently detected viruses=
- == will be of general interest. To receive the Virus Catalog Format,==
- == please contact the above address. ==
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-
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- == End of ATARIVIR.291 document ==
- == (158 Lines, 10k Bytes) ==
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