Forum Discussion
Ivan54
Apr 26, 2017Bronze Contributor
Threat Explorer: ATT0000x.htm Attachments / VBS/Jenxcus!lnk Malware / what is happening here?
So I'm taking a closer look at the new security center and noticed the following issue repeating. User receives email with attachments (in this case 2 PDFs) - all is good - the attachments are ...
- May 04, 2017Ivan, thanks for pointing this out to us. What happened was that one of our anti-malware engines had a false positive verdict on a few instances of this file. Not knowing it was a false positive, an automated process added the file hash for that attachment to our "possible malware" list and that's why the messages are showing up as both "Delivered " and "malware". We started fixing up most of the environment in North America last week but we're still working on marking this file as clean so that it appears "good" for all future instances.
Phil Newman (OFFICE 365)
May 04, 2017Former Employee
Ivan, thanks for pointing this out to us. What happened was that one of our anti-malware engines had a false positive verdict on a few instances of this file. Not knowing it was a false positive, an automated process added the file hash for that attachment to our "possible malware" list and that's why the messages are showing up as both "Delivered " and "malware". We started fixing up most of the environment in North America last week but we're still working on marking this file as clean so that it appears "good" for all future instances.
- Ivan54May 15, 2017Bronze Contributor
thanks for the information. The issue was "fixed" for a few days, though it popped up again, this time under the threat family "ALisp/Bursted.BL". Again only ATT****.htm files, not the actual attachments itself.
- VasilMichevMay 04, 2017MVP
Thanks for the info Phil!