Definition[]
A polymorphic virus
| “ | creates copies during replication that are functionally equivalent but have distinctly different byte streams. To achieve this, the virus may randomly insert superfluous instructions, interchange the order of independent instructions, or choose from a number of different encryption schemes. This variable quality makes the virus difficult to locate, identify, or remove.[1] | ” |
References[]
- ↑ NIST Special Publication 800-5, §1.3.