This is the Trend Micro detection for a specially-crafted .MSG file that arrives via email spammed by another malware or a malicious user.
It contains files that exploit the Microsoft Jet Database Engine vulnerability, including one detected by Trend Micro as TROJ_MDROPPER.MB.
The said vulnerability allows a malicious .DOC file to drop and execute an embedded executable file.
More information on the said vulnerability can be found on the following Web page:

• Microsoft Security Advisory (950627)

Note that this detection is a zero-day exploit because it attacks a software vulnerability for which the vendor has not released a patch. This may pose as a dangerous situation in which a lot of computers may be affected due to the availability of the exploit code, and the fact that there is no available patch for the vulnerability.

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