PSW-Worm
Description PSW-Worm
If you receive notification that a PSW-Worm has been detected, this means that the file that has been scanned is a stored password protected ZIP file (stored means that the file is effectively uncompressed) which contains a file with one of the extensions from the following list:
bat
cmd
com
exe
pif
scr
Such files are often detected in connection with several mail worms which have been spreading recently in password protected files. In such cases, the password will be shown in the message body. When scanning such messages, Kaspersky Anti-Virus searches for passwords and then scans the attached file using the password found.
If no password is included, or if the attached file is scanned separately from the message, then the message will be flagged as suspicious when scanned by Kaspersky Anti-Virus with the heuristic analyser enabled. The file will be flagged as being 'possibly infected by PSW-Worm', as such files are characteristics of a range of mail worms.
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Dec3rd.1333
Description Dec3rd.1333
It's a not dangerous memory resident parasitic encrypted virus. It hooks INT 21h and writes itself to the end of COM- and EXE-files that are executed or opened, or searches for these files and infects them (this virus contains the internal mask strings "*.COM *.EXE"). On running under DOS 6.0 and some other this virus displays: "Dec 3 92 is my 20th birthday (V6)".
December12.1914
Description December12.1914
It is not a dangerous memory resident encrypted parasitic virus. It hooks INT 21h and writes itself to the end of COM and EXE files that are executed. On December 12th it also hooks INT 1Ch (timer) and in about 30 minutes drops symbols on the screen (see also the "Cascade" virus).
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