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  1.  
  2.              *********************************************
  3.              ***   Reports collected and collated by   ***
  4.              ***            PC-Virus Index             ***
  5.              ***      with full acknowledgements       ***
  6.              ***            to the authors             ***
  7.              *********************************************
  8.  
  9.  
  10.  
  11.  Computer Virus Catalog 1.2: South African Friday 13.  (Sept.20,1989)
  12.  
  13. Entry...............: "South African Friday the 13th" virus
  14. Alias(es)...........: Virus-B, Miami, Munich
  15. Virus Strain........:
  16. Virus detected when.: 1987
  17.               where.: South Africa
  18. Classification......: .COM file infecting virus/Extending/Direct
  19. Length of Virus.....: 419 bytes
  20.  
  21. -------------------- Preconditions ---------------------------
  22.  
  23. Operating System(s).: MS-DOS
  24. Version/Release.....: 2.0 or higher
  25. Computer model(s)...: IBM PC,XT,AT and compatibles
  26.  
  27. ------------------ Attributes ------------------------------------
  28.  
  29. Easy Identification.: Text "INFECTED" found near start of virus.
  30.  
  31. Type of infection...: Virus adds itself to end of file and places a
  32.                       three-byte jump at the beginning.
  33.  
  34. Infection Trigger...: When an infected file is run, it will infect
  35.                       every .COM file in the current directory, with
  36.                       the excep- tion of COMMAND.COM.
  37.  
  38. Storage media affected:
  39.  
  40. Interrupts hooked...: ---
  41.  
  42. Damage..............: Every infected file run on a Friday the 13th
  43.                       will be deleted.
  44.  
  45. Damage Trigger......: Current date, as reported by DOS.
  46.  
  47. Particularities.....: ----
  48.  
  49. Similarities........:  The effect is similar to that of other,
  50.                        unrelated viruses. VIRUS-B is a modified
  51.                        variant of this virus.
  52.  
  53. --------------------- Agents --------------------------------------
  54.  
  55. Countermeasures.....: All programs which check for .COM file length
  56.                       changes will detect infections.
  57.                       Simply making all .COM files read-only is
  58.                       effective against this virus.
  59.  
  60. Countermeasures successful:
  61.                       Detection of infection:
  62.                            F-FCHK (from F.Skulason's F-PROT package)
  63.                            VIRUSCAN
  64.                       Removal:   F-FCHK
  65.  
  66. Standard means......: Write-protect every .COM file with "attrib +r
  67. *.COM".
  68.  
  69. -------------------- Acknowledgement -------------------------------
  70.  
  71. Location............: University of Iceland/Computing Services
  72. Classification by...: Fridrik Skulason  (frisk@rhi.hi.is)
  73. Documentation by....: Fridrik Skulason
  74. Date................: Sept 20, 1989
  75. Information Source..: ---
  76.  
  77. ==================== End of South-African virus ======================
  78.  
  79.  
  80.   ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  81.   ++++++++++++++++++++++++++ end of reports ++++++++++++++++++++++++
  82.   ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  83.