66A Virus

 Virus Name:  66A 
 Aliases:     Satan-B 
 V Status:    Rare 
 Discovery:   April, 1992 
 Symptoms:    .COM file growth; file date/time change; program execution 
              failure; "Too many files open" error message 
 Origin:      Unknown 
 Eff Length:  512 Bytes 
 Type Code:   PNCK - Parasitic Non-Resident COM Infector 
 Detection Method:  F-Prot, Sweep, ViruScan, AVTK, NAVDX, VAlert, 
                    IBMAV, NAV, PCScan, ChAV, 
                    NShld, Sweep/N, Innoc, NProt, AVTK/N, NAV/N, IBMAV/N, 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The 66A virus was received in April, 1992.  Its origin or point of 
       isolation are unknown.  This virus is a memory resident infector of 
       .COM files, including COMMAND.COM. 
       When a program infected with the 66A virus is executed, this virus 
       will search the current directory to locate all previously 
       uninfected .COM files.  As the uninfected .COM files are found, the 
       virus will infect them. 
       Programs infected with the 66A virus will have a file length 
       increase of 512 bytes with the virus being located at the end of the 
       infected file.  The program's date and time in the DOS disk 
       directory listing will have been updated to the current system 
       date and time. 
       The following text strings can be found within all 66A infected 
       The "66A" text string is used by the virus to determine if the 
       file was previously infected, and is located at the end of the 
       Programs infected with the 66A virus may fail to execute properly, 
       or unusual error messages may occur, such as "Too many files open". 

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