WORM: .eml NIMDA Extension
This signature detects attempts to create .EML files on the system, a common sign of the NIMDA worm. The worm browses remote directories and creates .EML files (the worm's multi-part messages containing a MIME-encoded worm) with the same names as existing documents or Web page files.
Extended Description
Nimda is a worm and copies the .EML, .NWS, and .DOC files on shared drives to other vulnerable systems.
References
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3