Fake Danske Bank “You Have A New Secure Mail ” Delivers Trickbot

Malspam

This example is an email containing the subject of “You have a new secure mail ” pretending to come from Danske Bank but actually coming from a look-a-like or typo-squatted domain “secure@danskebankco.co.uk” with a malicious word doc attachment is today’s latest spoof of a well-known company, bank or public authority delivering Trickbot banking Trojan

The criminals sending these are continuing with the trend of compromising SEO companies hosted on the same IP address as yesterday by Godaddy to actually deliver the trickbot payload.

You can now submit suspicious sites, emails and files via our Submissions system

Email Details

From: Danske Bank <secure@danskebankco.co.uk>

Date: Thu 19/07/2021 11:48

Subject: You have a new secure mail

Attachment: SecureMail.doc

Body content:

Danske Bank PLC has sent you a new Secure Mail

A copy of “Secure Mail” have been attached below, please save it for future references.

Your ID: carol@victimsdomain.com
Ref #: 298739810923
This string of letters and numbers is a unique ID for the “Secure Mail” you received.

This e-mail including any attachments is private and confidential and may contain privileged material. If you have received this e-mail in error, please notify the sender and delete it (including any attachments) immediately. You must not copy, distribute, disclose or use any of the information in it or any attachments. Telephone calls may be monitored or recorded.

Copyright ©2021 Danske Bank Group.

Screenshot:

Fake Danske Bank email

Danske Bank has not been hacked or had their email or other servers compromised. They are not sending the emails to you. They are just innocent victims in exactly the same way as every recipient of these emails.

What has happened is that the criminals sending these have registered various domains that look like genuine Company, Bank, Government or message sending services. Normally there is only newly registered domain that imitate Companies House, HMRC, another Government department, a Bank, file hosting service or a message sending service that can easily be confused with the genuine organisation in some way, that are hosted on & sending emails from 4 different servers.. Some days however we do see dozens or even hundreds of fake domains.

Today’s example of the spoofed domain is, as usual, registered via Godaddy as registrar. Because of new GDPR rules we cannot easily find the registrants name or any further details.

danskebankco.co.uk hosted on & sending emails via 191.101.26.101 | 95.211.155.225| 91.218.124.84 | 185.82.203.174 |

Malware Details

Fake Danske Bank word doc

Continuing with the behaviour we have been seeing recently with the macros on these word docs. They are using some sort of Active X control ( looks like ink picture resize active X control today. We have also been seeing ink picture paint recently) to start & run the macro, so it needs an extra couple of clicks from the victim to get infected. You actually have to enable activeX content then close the word doc & re-open it for the macro to fire off while using anyrun. I am not sure if this is the same behaviour in a real computer or only in the VM.

SecureMail.doc Current Virus total detections | Anyrun | Hybrid Analysis |

This malware doc file downloads from http://fishersinseo.com/oi.moi which is a renamed .exe file ( VirusTotal) Gtag Ser 0719

The alternate Download location is http://fresnotxseo.com/oi.moi

Another new location for files & configs C:\Users\[User]\AppData\Roaming\msglob\

All modern versions of word and other office programs, that is 2010, 2013, 2016 and 365, should open all Microsoft office documents that is Word docs, Excel spreadsheet files and PowerPoint etc that are downloaded from the web or received in an email automatically in “protected view” that stops any embedded malware, macros and DDE “exploit /Feature” and embedded ole objects from being displayed and running. Make sure protected view is set in all office programs to protect you and your company from these sorts of attacks and do not over ride it to edit the document. If the protected mode bar appears when opening the document DO NOT follow the advice they give to enable macros or enable editing to see the content. The document will have a warning message, but you will be safe.

Be aware that there are a lot of other dodgy word docs spreading that WILL infect you with no action from you, if you are still using an out dated or vulnerable version of word. This is a good reason to update your office programs to a recent version and stop using office 2003 and 2007. Many of us have continued to use older versions of word and other office programs, because they are convenient, have the functions and settings we are used to and have never seen a need to update to the latest super-duper version.

The risks in using older version are now seriously outweighing the convenience, benefits and cost of keeping an old version going.

What Can Be Infected By This

At this time, these malicious macros only infect windows computers. They do not affect a Mac, IPhone, IPad, Blackberry, Windows phone or Android phone.

The malicious word or excel file can open on any device with an office program installed, and potentially the macro will run on Windows or Mac or any other device with Microsoft Office installed. BUT the downloaded malware that the macro tries to download is windows specific, so will not harm, install or infect any other computer except a windows computer. You will not be infected if you do not have macros enabled in Excel or Word. These Macros, embedded Oles or DDE do not run in “Office Online” Open Office, Libre Office, Word Perfect or any other office program that can read Word or Excel files.

Please read our How to protect yourselves page for simple, sensible advice on how to avoid being infected by this sort of socially engineered malware. Also please read our post about word macro malware and how to avoid being infected by them

I strongly urge you to update your office software to the latest version and stop putting yourself at risk, using old out of date software.

IOC:

SecureMail.doc
MD5: 76392af855e84ba97ace0f20e0730972
SHA-1: 12415cf830b1582a7a8a8bb0f0b9318c4270531c
Download URLs
http://fishersinseo.com/oi.moi 76.12.219.173
http://fresnotxseo.com/oi.moi 76.12.219.173
MD5: 5de0159c82fdd78e94b2565d105d3dae
SHA1: 2b267c1cfde9af7d1807983f69d83cff234d0fe6

Email from: secure@danskebankco.co.uk
danskebankco.co.uk
191.101.26.101
95.211.155.225
91.218.124.84
185.82.203.174

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