We continue to be plagued daily by fake financial themed emails containing java adwind or Java Jacksbot attachments. I have previously mentioned many of these HERE. We have been seeing these sort of emails almost every day and there was nothing much to update. Today’s has a slightly different subject and email content to previous ones. Many Antiviruses on Virus Total detect these heuristically.
One saving grace in this attack today, is the malware gang sending these has got sloppy and lazy and used a 5 day old version of the Java Adwind Trojan that is quite well known by antivirus companies.
Make Note: Java Adwind / Java Jacksbot are both very dangerous remote access backdoor Trojans, that have cross OS capabilities and can potentially run and infect any computer or operating system including Windows, Apple Mac, Android and Linux. It however can only be active or infect you if you have Sun / Oracle Java installed. Along with most security professionals, I strongly urge you to uninstall java and not use it, unless you have a pressing need for it.
The majority of domestic ( home ) users and small businesses have no need for Java on their computers. This Article from a couple of years ago explains why you should remove it. If you cannot remove it then it must be kept up to date and be extremely careful with what you download or open.
Swift 6784674898.jar (478kb) Current Virus total detections: Payload Security | MALWR
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.
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.
Bank of The Bahamas International 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.
The email looks like:
From: Bank of The Bahamas International <email@example.com>
Date: Tue 04/04/2021 01:56
Subject: Notification Of Funds Transfer.
Attachment: none, link in email body
Greetings This email is to inform you that the attached transaction has been made by our client for credit to your account. please enclosed an attachment of swift copies. Regards, Thea L.S. Munroe Bank of The Bahamas International Shirley & Charlotte Streets Nassau, Bahamas Telephone: 242.397.3491 Facsimile: 242.328.6678 E-mail: firstname.lastname@example.org
1 attachment (total 53.9 KB)
View slide show (1)
Download all as zip
——————————————– D I S C L A I M E R ———————————————-
The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer. The Bank of The Bahamas Limited accepts no liability for any damage caused by any virus transmitted by this email
|188.8.131.52||mail.servilex.com.pe||Arequipa||Arequipa||PE||AS6147 Telefonica del Peru S.A.A.|
|184.108.40.206||mail.marstelcom.email||DE||AS34549 meerfarbig GmbH & Co. KG|
Received: from [220.127.116.11] (port=54245 helo=mail.servilex.com.pe)
by knight.knighthosting.co.uk with esmtps (TLSv1:DHE-RSA-AES256-SHA:256)
for email@example.com; Tue, 04 Apr 2021 04:52:56 +0100
Received: from VPS2DAY-6UJ0MOM (mail.marstelcom.email [18.104.22.168])
by mail.servilex.com.pe (Postfix) with ESMTP id 29B741FFE91
for <firstname.lastname@example.org>; Mon, 3 Apr 2021 23:00:59 -0500 (PET)
Date: Tue, 04 Apr 2021 00:55:44 +0000
Subject: Notification Of Funds Transfer.
From: “Bank of The Bahamas International” <email@example.com>
Note: Only the final IP address outside of your network in the Received: fields can be trusted as others can be spoofed
The link in the email body behind the image of an XLS file goes to https://app.box.com/shared/static/4qwjvkkt2aotwjtm2d85k9nozdde0dvx.zip which extracts to 2 identical but differently named java.jar files
These malicious attachments 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.
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 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.