If one phish spam doesn't succeed, maybe another will
Here is another entry in the annals of spammers trying extra hard, to go with an earlier one. Recently, our mail system logged the following two interesting cases. Let's start with the first one:
<ID> attachment application/octet-stream; MIME file ext: .pdf <ID> attachment application/octet-stream; MIME file ext: .htm rejected <ID> from firstname.lastname@example.org to <redacted>: identified virus: Mal/Phish-A, Troj/PDFUri-FUP detail <ID> Subject: [PMX:SPAM] [PMX:VIRUS] Re: Document for Last Shipments
It seems our spammer is trying to get people two ways, trying both some malware and also a phish spam as a HTML attachment. At one level this feels like a sensible approach; if the recipient's system blocks the malware attack, maybe the recipient will still respond manually to the phish spam. But that seems to assume a world where people can have malware not work and be blocked without having big red alerts show up all over the entire email. Perhaps that is the case; if so, that's depressing.
Then there's the second and perhaps more interesting case:
<ID> attachment application/octet-stream; MIME file ext: .html <ID> attachment application/octet-stream; MIME file ext: .html rejected <ID> from 184.108.40.206/TAX@GOV.COM to <redacted>: identified virus: Troj/Phish-DFM, Troj/Phish-DGF detail <ID> Subject: [PMX:SPAM] [PMX:VIRUS] Tax Clearance Certificate
(This 'TAX@GOV.COM' spammer turns out to have been trying for a while from several sources.)
This prompted me to go looking through our logs in search of messages that were identified by Sophos as having multiple bad things in them in the hopes that I'd find a double-phish case. Sadly I wasn't able to find any, and most of them were less interesting than these ones. There was one exception, but that's going to be another entry.