A slightly different malware campaign that I have never seen hitting the UK previously. The email pretends to be about a reward for using Blockchain and you need to install a new authentication method. The entire email screams scam, is written in quite poor English, with missing punctuation and poor grammar. Then to add the cherry to the icing on the cake, the link to a .scr file isn’t hidden, obscured or masked in any way.
They use email addresses and subjects that will scare, shock, persuade or entice a recipient to read the email and open the attachment. Now in the real world, despite all the hype Blockchain, Bitcoins and other digital currencies are only used by a tiny minority of people. Bitcoin mining is performed by even fewer people. I would guess that more than 99% of potential recipients of this sort of email would not have the faintest idea what it is all about. Unfortunately however most people are quite curious and it is quite possible that a proportion of recipients will click through, just out of idle curiosity.
The criminals trying to infect you have a very low regard for you or any victim. This screenshot from the Anyrun report shows how low. The fake error message says “unable to open file, Dope” When you press OK the file runs. It doesn’t matter whether you press OK or the X in the top right corner. Any interaction with the error box starts the file running. I couldn’t get it to run in a VM without either OK or X out of the msg box
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.
blockchainsecurity.com 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.
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 file it really is, so making it much more likely for you to accidentally open it and be infected.
The email link leads to http://bcexsupport.online/btc.scr Current Virus total detections: Anyrun | The actual malware file remarkably well detected, so the majority of recipients should have been totally protected from it. It looks like it has been spreading for about 1 week. However the download link is less well known. ( VirusTotal)
Following the Virustotal links also gave me http://bcexsupport.online/ethereum.exe A slightly different Dark Comet version ( VirusTotal ) and then checking the root of the website I also found ( VirusTotal) the domain had an open directory listing. Where I also found http://bcexsupport.online/crypto.scr ( VirusTotal)
I do not expect this domain to stay active for much longer. Hostinger the hosting company have a very strong & efficient abuse system where reports are normally dealt with quickly. I am very surprised that this hasn’t been reported previously. The domain wasn’t even listed on https://urlhaus.abuse.ch/browse/ until today, which is very surprising.
The email looks like:
From: Block Chain <email@example.com>
Date: Tue 12/02/2019 16:26
Subject: Blockchain reward
Dear valued Blockchain customer,
As of today, a new authentication process will be in place. We value all of our customers and it’s our top priority to keep you and your bitcoins safe.
Remove anti-virus, ignore pop-ups & malware If you’re seeing some of these problems with Chrome, you might have unwanted software or malware installed on your computer which will seems like but ignore you are safe. Pop-up ads and new tabs that won’t go away Your Chrome homepage or search engine keeps changing without your permission, you are still safe. Alerts about a virus or an infected device it doesn’t matter, you are safe. An amount of crypto-currency a miner receives for processing transactions in a given block. Because creating (or “mining”) blocks is so crucial to the security of the Bitcoin network and yet so hard, the Bitcoin protocol includes a mechanism to encourage people to mine: every time a block is added, the miner who found the block is given 1.5 BTC (this number will change at the next halving in 2020) as a block reward
kindly install block link
?? © 2019 Blockchain
|126.96.36.199||IN||AS134341 jdm broadband services pvt ltd|
Received: from [188.8.131.52] (port=51800 helo=localhost.localdomain.com) by my email serverwith esmtp (Exim 4.91) (envelope-from <firstname.lastname@example.org>) id 1gtbA4-0007xW-Ik for email@example.com; Tue, 12 Feb 2019 16:43:57 +0000 X-Sender: "Block Chain" <firstname.lastname@example.org> X-Receiver: email@example.com MIME-Version: 1.0 From: "Block Chain" <firstname.lastname@example.org> To: email@example.com Reply-To: "Block Chain" <firstname.lastname@example.org> Date: 12 Feb 2019 08:25:40 -0800 Subject: Blockchain reward Content-Type: text/html; charset=Windows-1252 Content-Transfer-Encoding: quoted-printable Priority: urgent Importance: normal
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.
Main object- “btc.scr”
Dropped executable file
sha256 C:\Users\admin\AppData\Local\Temp\BTC.EXE cb737fb2ae0b0281b44da055b55334a1095c5297f97e9d7c1c7844c1407d468f