Continuing with the never ending series of malware downloaders is an email with the subject of New BT Online Bill pretending to come from BT but actually coming from a look-a-like or typo-squatted domain BT Business <firstname.lastname@example.org> delivers Dridex Banking Trojan
BT 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 that can easily be confused with the genuine organisation in some way.
They use email addresses and subjects that will entice a user to read the email and open the attachment. A very high proportion are being targeted at small and medium size businesses, with the hope of getting a better response than they do from consumers.
There is a link in email body to https://educationcentreofaustr-my.sharepoint.com/personal/sanjay_eca_edu_au/_layouts/15/guestaccess.aspx?docid=05ab57c699280416f99ea36b5f6abcd2b&authkey=AcKb-ARfpB-jWOggqBdrwaQ&expiration=2017-12-20T09%3A40%3A38.000Z&e=47b850c3d69449a58a462346f9dd3bb3 where a zip containing a .js file is downloaded
You can now submit suspicious sites, emails and files via our Submissions system
Remember many email clients, especially on a mobile phone or tablet, only show the Name in the From: and not the bit in <domain.com >. That is why these scams and phishes work so well.
This malware downloads from https://northernstevedoring-my.sharepoint.com/personal/ecahill_nsspl_com_au/Documents/PublicDocuments.share?slrid=901b369e-d0a4-4000-8fb1-f80c67bfb172 which gives lZp6ME3.exe ( VirusTotal) | Hybrid Analysis | Anyrun Beta|
I couldn’t get the file manually, it asked for a login to the SharePoint site but the online sandboxes did get the malware file.
One of the emails looks like:
From: BT Business <email@example.com>
Date: Wed 13/12/2017 10:53
Subject: New BT Online Bill
Your bill amount is £254.85. This doesn’t include any amounts brought forward from any other bills.
We’ve put your latest BT bill online for you to view. See your bill here
We’ll take your payment from your account as usual by Direct Debit.
Reduce paper waste
You’re still getting paper bills by post. Why not go paper-free, and stop storing and shredding them once and for all?
When you log in to your account, you can also see your recent usage, call costs and bills.
Get more from our App
Did you know you can view and pay your bills and manage your orders via the BT Business app?
Need some help?
Go to www.bt.com/business/help.
Thanks for choosing BT.
Your BT Team
British Telecommunications plc Registered office: 81 Newgate Street London EC1A 7AJ.
Registered in England No. 1800000.
This email contains BT information, which may be privileged or confidential. It’s meant only for the individual(s) or entity named above. If you’re not the intended recipient, note that disclosing, copying, distributing or using this information is prohibited. If you’ve received this email in error, please let me know immediately on the email address above. Thank you. We monitor our email system, and may record your emails.
Email Headers & Website details:
|126.96.36.199||mta29.bt.connectionsc.com||IE||AS16276 OVH SAS|
Received: from mta29.bt.connectionsc.com ([188.8.131.52]:56421)
by knight.knighthosting.co.uk with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256)
for firstname.lastname@example.org; Wed, 13 Dec 2017 10:53:26 +0000
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; s=mail; d=bt.connectionsc.com;
DomainKey-Signature: a=rsa-sha1; c=nofws; q=dns; s=mail; d=bt.connectionsc.com;
Date: Wed, 13 Dec 2017 02:53:28 -0800
From: “BT Business” <email@example.com>
Subject: New BT Online Bill
Content-Type: multipart/alternative; boundary=”—-=_Part_2865eebf889bfacc-6385baddd-1338afff-167aaed-674ecccf716acce”
The sending email domain connectionsc.com was registered on 12 December 2017 allegedly by a Chinese Entity. It is hosted on 184.108.40.206 OVH France AS16276. The criminals have created a BT subdomain to connectionsc.com and created authentication ( SPF records) to allow them to send via numerous different OVH servers . 220.127.116.11/24 | 18.104.22.168 | 22.214.171.124/24 | 126.96.36.199/24 | 188.8.131.52/24 | 184.108.40.206/24 | 220.127.116.11/24 | 18.104.22.168 | 22.214.171.124/24 | 126.96.36.199 | 188.8.131.52 |
All these malicious emails are either designed to steal your Passwords, Bank, PayPal or other financial details along with your email or FTP ( web space) log in credentials. Or they are Ransomware versions that encrypt your files and demand large sums of money to recover the files.All the alleged senders, amounts, reference numbers, Bank codes, companies, names of employees, employee positions, email addresses and phone numbers mentioned in the emails are all random. Some of these companies will exist and some won’t. Don’t try to respond by phone or email, all you will do is end up with an innocent person or company who have had their details spoofed and picked at random from a long list that the bad guys have previously found.
The bad guys choose companies, Government departments and organisations with subjects that are designed to entice you or alarm you into blindly opening the attachment or clicking the link in the email to see what is happening.
There are frequently dozens or even hundreds of different download locations, sometimes delivering the exactly same malware from all locations and sometimes slightly different malware versions from each one. Dridex, Locky and many other malwares do update at frequent intervals during the day, sometimes as quickly as every hour, so you might get a different version of these nasty Ransomware or Banking password stealer Trojans to the version we list here.
Be very careful with email attachments. All of these emails use Social engineering tricks to persuade you to open the attachments that come with the email. Whether it is a message saying “look at this picture of me I took last night” and it appears to come from a friend or is more targeted at somebody who regularly is likely to receive PDF attachments or Word .doc attachments or any other common file that you use every day.
The basic rule is NEVER open any attachment to an email, unless you are expecting it. Now that is very easy to say but quite hard to put into practice, because we all get emails with files attached to them. Our friends and family love to send us pictures of them doing silly things, or even cute pictures of the children or pets.
Never just blindly click on the file in your email program. Always save the file to your downloads folder, so you can check it first. Many malicious files that are attached to emails will have a faked extension. That is the 3 letters at the end of the file name. Unfortunately windows by default hides the file extensions so you need to Set your folder options to “show known file types. Then when you unzip the zip file that is supposed to contain the pictures of “Sally’s dog catching a ball” or a report in word document format that work has supposedly sent you to finish working on at the weekend, or an invoice or order confirmation from some company, you can easily see if it is a picture or document & not a malicious program.
If you see .JS or .EXE or .COM or .PIF or .SCR or .HTA .vbs, .wsf , .jse .jar at the end of the file name DO NOT click on it or try to open it, it will infect you.
While the malicious program is inside the zip file, it cannot harm you or automatically run. When it is just sitting unzipped in your downloads folder it won’t infect you, provided you don’t click it to run it. Just delete the zip and any extracted file and everything will be OK. You can always run a scan with your antivirus to be sure. There are some zip files that can be configured by the bad guys to automatically run the malware file when you double click the zip to extract the file. If you right click any suspicious zip file received, and select extract here or extract to folder ( after saving the zip to a folder on the computer) that risk is virtually eliminated. Never attempt to open a zip directly from your email, that is a guaranteed way to get infected. The best way is to just delete the unexpected zip and not risk any infection.