Wednesday, 11 February 2015

Your latest e-invoice from malware

Your latest e-invoice from email being spammed containing a word document with embedded macro.

These emails aren't from these companies at all, they just being used to make the email look more genuine, ie. from a real company.
Note
It's also worth remembering that the company itself  may not have any knowledge of this email and it's link(s) or attachment as it won't have come from their servers and IT systems but from an external bot net.

It's not advised to ring them as there won't really be anything they can do to help you.

Message Header: (Note: the company name is random)

Subject: Your latest e-invoice from ULS TECHNOLOGY PLC
Message Body: (Note: the company name is random)
Dear Valued Customer,

Please find attached your latest invoice that has been posted to your online account. You’ll be pleased to know that your normal payment terms still apply as detailed on your invoice.

Rest assured, we operate a secure system, so we can confirm that the invoice DOC originates from ULS TECHNOLOGY PLC and is authenticated with a digital signature.

Thank you for using e-invoicing with ULS TECHNOLOGY PLC - the smarter, faster, greener way of processing invoices.
 Attachment filename (word document with macros, filename random)

7350VV.doc
Md5 Hashes:
d49d1aedc0151527c5b67855ee55fc1b [1]
e1c4c3d995941a2e164f01d9de516651 [2]

Malware Macro document information:

VirusTotal Report [1] (hits 0/57 Virus Scanners)
VirusTotal Report [2] (hits 0/57 Virus Scanners)


Malwr Report [1]
Malwr Report [2]

Decoded Macro [1]
Decoded Macro [2]

Sanesecurity signatures are blocking this as:

Sanesecurity.Malware.24676.DocHeur

NOTE

The current round of Word and Excel attachments are targeted at Windows users.

Apple and Android software can open these attachments and may even manage to run the macro embedded inside the attachment.

The auto-download file is normally a windows executable and so will not currently run on  any operating system, apart from Windows.

However, if you are an Apple/Android user and forward the message to a Windows user, you will them put them at risk of opening the attachment and auto-downloading the malware.

Currently these attachments try to auto-download Dridex, which is designed to

steal login information regarding your bank accounts (either by key logging, taking auto-screens hots or copying information from your clipboard (copy/paste))

Cheers,
Steve

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