Jerusalem.B

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Jerusalem.B
Threat LevelDamageDistribution

At a glance Tech details | Solution


Common name:	Jerusalem.B
Technical name:	Jerusalem B Family
Threat level:	Low
Alias:	Viernes 13
Type:	Virus
Effects:	It activates on Friday 13^th and deletes all the files that are run.
Affected platforms:	MS-DOS
Detection updated on:	Jan. 1, 1991
Statistics	No
Country of origin:	ISRAEL

Brief Description

Jerusalem.B is a resident virus that infects files with an EXE, SYS and COMextension. This virus is activated when the date on the system clock is Friday 13^th and it deletes all files run on the computer.

Jerusalem.B increases the size of infected files. The size of a file increases every time the infected file is run. It can also cause the computer to slow down.

Jerusalem.B does not use any specific means to spread. It can reach computers through the usual means used by viruses: Internet downloads, floppy disks, FTP, etc.

Visible Symptoms
Jerusalem.B is difficult to identify, as it does not display any messages or warnings that indicate that it has infected a computer.

Brief Description

Visible Symptoms

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