I received a bit of a weird one this morning that puzzled me to start with.
An email with the subject of Re: VB: VB: SV: SV: December 2017 Quotation Confirmation appearing to come from UPSC Marine Service PTE LTD. <email@example.com> with a uue attachment that delivers Formbook trojan
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.
The actual email is nothing special and we see hundreds every week like this one that imitate or pretend to come form various companies with fake order or invoice attachments. They always deliver some sort of malware.
What is different with this one is the attachment which is a UUE attachment which extracted originally to a .txt file that had rar headers. I renamed then txt file to RAR but I could not get this file to doanything. I had to go to the quarantine folder on my mail server ( all emails I receive get a copy quarantined for later examination ) where I could download the attachment directly and it then extracted correctly from the uue file to a working .exe. Also simply renaming the UUE to RAR does allow the file to extract
I can only assume that Outlook somehow mangled or corrupted this uue attachment when it received it & cannot correctly deal with them. Hopefully this will help to protect a large number of recipients. I don’t know if it is something that only happens on my set up, or whether it is a common occurrence.
I have attached all the attachments in zip HERE ( V2) is the working copy. ( usual P/W)
One of the emails looks like:
From: UPSC Marine Service PTE LTD. <firstname.lastname@example.org>
Date: Fri 23/03/2018 05:03
Subject: Re: VB: VB: SV: SV: December 2017 Quotation Confirmation
The attached Quotation was issued on December 2017 before the resignation of our former Director.
We want to go ahead with the payment, kindly confirm all information are correct and the prices are unchanged. Also what is the delivery time?
Thanks & Best regards
***pls consider the environment before printing this msg, save a tree.
|188.8.131.52||mail.cradibleparking.com||Los Angeles||California||US||AS22612 Namecheap, Inc|
Received: from mail.cradibleparking.com ([184.108.40.206]:17142 helo=server1.cradibleparking.com)
by My Mail Server with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256)
for email@example.com; Fri, 23 Mar 2018 05:03:17 +0000
Received: from softfbank by server1.cradibleparking.com with local (Exim 4.89_1)
for firstname.lastname@example.org; Fri, 23 Mar 2018 05:03:14 +0000
Subject: Re: VB: VB: SV: SV: December 2017 Quotation Confirmation
X-PHP-Script: www.softfbank.co/magic/prolearner.php for 220.127.116.11
Date: Fri, 23 Mar 2018 05:03:14 +0000
From: “UPSC Marine Service PTE LTD.” <email@example.com>
X-Mailer: Leaf PHPMailer 2.7 (leafmailer.pw)
X-AntiAbuse: This header was added to track abuse, please include it with any abuse report
X-AntiAbuse: Primary Hostname – server1.cradibleparking.com
X-AntiAbuse: Original Domain – myonlinesecurity.co.uk
X-AntiAbuse: Originator/Caller UID/GID – [1004 991] / [47 12] X-AntiAbuse: Sender Address Domain – clhl.co.uk
X-Get-Message-Sender-Via: server1.cradibleparking.com: authenticated_id: softfbank/only user confirmed/virtual account not confirmed
X-Authenticated-Sender: server1.cradibleparking.com: softfbank
X-Source-Args: /opt/cpanel/ea-php56/root/usr/bin/php-cgi /home/softfbank/public_html/magic/prolearner.php
These malicious attachments normally have a password stealing component, with the aim of stealing your bank, PayPal or other financial details along with your email or FTP ( web space) log in credentials. Many of them are also designed to specifically steal your Facebook and other social network log in details. A very high proportion are Ransomware versions that encrypt your files and demand money ( about £350/$400) 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.
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.
Previous campaigns over the last few weeks have delivered numerous different download sites and malware versions. There are frequently 5 or 6 and even up to 150 download locations on some days, sometimes delivering the exactly same malware from all locations and sometimes slightly different malware versions. Dridex /Locky does 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.
This is another one of the files that unless you have “show known file extensions enabled“, can easily be mistaken for a genuine DOC / PDF / JPG or other common file instead of the .EXE / .JS file it really is, so making it much more likely for you to accidentally open it and be infected.
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.