Lehigh Type Subtype Creator(s) Date Place of Origin Source Language Platform File Type Aliases Family File Size Infection Size Infection Impact Reported Costs MD5 Hash SHA1 Hash CRC32 Hash Lehigh is an early DOS virus that infects only COMMAND.COM. While it is a file virus, the fact that it only infects one particular file on each disk causes it to behave in a way similar to a boot sector virus.