After the last couple of weeks of the Trickbot gang playing around with weird & wonderful and slightly more complicated delivery methods, they have today reverted to the tried & trusted formats. This example is today’s latest spoof or imitation of a well-known company, bank or public authority delivering Trickbot banking Trojan. The email with the subject of “Case Number: 238963BACS” pretends to come from Lloyds Bank but actually comes from “firstname.lastname@example.org” which is a look-a-like, typo-squatted or other domain that can easily be misidentified, mistaken or confused with the genuine site. These all have a malicious office file attachment.
Many of us think, How can anybody fall for this sort of obvious scam? Well it is very, very easy. Yesterday evening my wife was arranging a BACS transfer from a company to refund her, which she has never done before and we do use Lloyds Bank. When she received a copy of this email this morning ( while I was typing out this post) she was convinced that it was connected to the transfer she requested last night and almost opened the attachment thinking it was genuine and there was something she needed to do. Luckily she knows never to open any attachment or follow any suspicious links in any email without checking with me first. It just shows how easy it is and how few coincidences need to fall into place for these sorts of scams to be believable and persuade the recipient to fall for them. The criminals behind the Trickbot malware campaigns are masters at Social Engineering. They don’t expect every recipient to believe the email or open the attachment. If only 1 or 2% of recipients actually belong to the targeted group, they get an adequate response with enough money from the campaign to make it worthwhile.
Lloyds 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 the genuine Company, Bank, Government Department or message sending service. Normally there is only one newly registered domain that imitates a well known Company, Government Department, Bank or other organisation that can easily be confused with the genuine body or website in some way. These are hosted on & normally send the emails from 3 or 4 different servers. Some days however we do see dozens or even hundreds of fake domains. Today we have 5 different servers involved
Today’s example of the spoofed domain is, as usual, registered via Godaddy as registrar, using privacy protection services.
- lloydsbank-bacs.com hosted on & sending emails via 22.214.171.124| 126.96.36.199 |188.8.131.52| 184.108.40.206| 220.127.116.11 |
You can now submit suspicious sites, emails and files via our Submissions system
From: Lloyds Bank <email@example.com>
Date: Tue 24/07/2018 13:26
Subject: Case Number: 238963BACS
This secure email was sent to: firstname.lastname@example.org
Please check enclosed copies of incoming BACs documents. Review and sign, when completed please fax to +44 (0) 845 301 1621.
Case Number: 238963BACS
Customer ID: LB7281341
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.
Please do not reply to this email as this address is not manned and cannot receive any replies.
Lloyds Bank plc, 25 Gresham Street, London EC2V 7HN. Registered in England and Wales, number 2065. Telephone No: 020 7626 1500.
Lloyds Bank plc is authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority under registration number 119278. We are members of the Financial Services Compensation Scheme and the Financial Ombudsman Service.
This malware doc file downloads from http://mobilethemesnlivewallpaper.com/derrpy.shmern which is a renamed .exe file VirusTotal | Anyrun app | I am assuming Gtag Ser 1030 as Cape sandbox is down & I haven’t decoded the files or configs yet.
The alternate Download location is http://integracooperativa.com/derrpy.shmern
The folder for the files & configs is: C:\Users\[User]\AppData\Roaming\WSIGE
There is some degree of differences between these trickbot trojans running on a 32 bit W7 system and a modern 64 bit W10 system. They still both share the same folder name for the configs & files but W7 uses settings.ini whereas W10 uses what looks like random txt names. On 2 runs I got different names AlternateServices.txt and SecurityPreloadState.txt as the instruction set. I am not seeing any of the dropped / downloaded modules in either of the Anyrun reports today. Whether there is an extended wait time or some sort of IP block needs a bit of further investigation
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.
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.
Email from: email@example.com