I have a bit of a strange one here from yesterday evening. I received a couple of different copies of this email, both coming from the same server and IP number but with different alleged senders. I am not exactly sure what it is. although some detections on VirusTotal suggest TinyNuke Banking Trojan. Anyrun doesn’t show any strange connections or indications of anything when trying to contact a couple of different UK banking sites.
Update confirmed as TinyNuke Banking Trojan which only appears to become active after rebooting the computer it is installed on. The C2 locations are m0pedx9.ru and m0pedx9.su neither of which are currently responding to DNS lookups
The email pretends to be a confirmation of an order for a Refurbished Samsung TV from a company called Refurbish Colo UK. Both copies were identical with the same non existent delivery address. The Post Code SE12 4EB does not exist and there is no ST HELENS ROAD anywhere near that area of South London.
The domain being used in this malware campaign. imageupload.host was registered on 27 January 2019 via NameCheap as registrar using Whois Guard protection to hide the registrants details. It is Hosted on IP 18.104.22.168 AS14061 DigitalOcean, LLC
You can now submit suspicious sites, emails and files via our Submissions system
The email contains a link to a fake dropbox site http://imageupload.host/dropbo_3/ looking like this
Where when you select view file you get a download of a .exe file not a word doc at all. http://imageupload.host/dropbo_3/dl.php which redirects to http://imageupload.host/dropbo_3/Invoice_260319_9lz8kba2e.DOC.exe Current Virus total detections: Anyrun |
One of the emails looks like:
From: Order Update <firstname.lastname@example.org>
Date: Tue 26/03/2019 16:48
Subject: Your card has been charged – Order Update id71284618
52′ SAMSUNG REFURBISHED TV -349.99
Your VISA card has been charged successfully.
Shipping information >>
DHL 48 HOUR EXPRESS SHIPPING
REFURBISH COLO UK
Thank you for your order
Your order has been processed succesfully and your card has been charged.
Tracking number will be sent by email within 48 hours after your order has shipped.
You have earned 35 points to use on your next order!
32 ST HELENS ROAD, LONDON, SE12 4EB
YOUR FULL INVOICE IS AVAILABLE BELOW
CLICK HERE FOR YOU INVOICE <http://imageupload.host/dropbo_3/>
If you have any issues with your order, contact information is provided inside your invoice.
The other email was Your card has been charged – id4987298 pretending to come from email@example.com
|22.214.171.124||imageupload.host||Toronto||Ontario||CA||AS14061 DigitalOcean, LLC|
Received: from imageupload.host ([126.96.36.199]:37622) by my mail server with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91) (envelope-from <firstname.lastname@example.org>) id 1h8pFO-0000D0-02 for email@example.com; Tue, 26 Mar 2019 16:48:22 +0000 Received: by imageupload.host (Postfix, from userid 33) id 8257581F02; Tue, 26 Mar 2019 16:48:13 +0000 (UTC) To: firstname.lastname@example.org Subject: Your card has been charged - Order Update id71284618 Date: Tue, 26 Mar 2019 16:48:13 +0000 From: Order Update <email@example.com> Message-ID: <firstname.lastname@example.org> X-Priority: 3 MIME-Version: 1.0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Received: from imageupload.host ([188.8.131.52]:38598) by my mail server with smtp (Exim 4.91) (envelope-from <email@example.com>) id 1h8rpf-0000Cw-0E for firstname.lastname@example.org; Tue, 26 Mar 2019 19:33:59 +0000 Received: from imageupload.host (imageupload.host [184.108.40.206]) Message-ID: <SHJKWHFHQTPKGWHNTAAYCL@imageupload.host> From: "ORDER UPDATE" <email@example.com> To: firstname.lastname@example.org Subject: Your card has been charged - id4987298 Date: Tue, 26 Mar 2019 22:31:58 +0300 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="--11718460852021520"
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.
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.
Main object- “Invoice_260319_9lz8kba2e.DOC.exe”
Dropped executable file
sha256 C:\Users\admin\AppData\Roaming\4044A691C9BD20379026\4044A691C9BD20379026.exe 292c835a1019c41fa03714c02978bf6f946e1639f4141f088ca69a63f79ffa4c