Java Adwind Trojans Via Fake Transaction Malspam Emails

Emailed Order Confirmation

Overnight we received 2 separate sets of malspam emails both eventually leading to the same Java Adwind 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.

Neither of the companies listed appear to have 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 first one of the emails has a blurry image embedded that is supposed to persuade you to open the zip and see the transactions, looks like:

From: gccremittance@emirates.net.ae

Date: Tue 19/07/2021 23:33

Subject: Pending Sendout Transaction

Attachment: Sendout-Copy.zip

Body Content:

kindly find attached listed trasactions for amendment,please do the corrections and send back to us. thanks

Screenshot:

Update: I am also getting some of these Pending Sendout Transaction emails coming through pretending to come from amirmuhammed@almuzaniexchange.ae

The second email looks like

From: lariex@qatar.net.qa

Date: Wed 20/07/2021 01:06

Subject: Confirm To Release

Attachment: Sendout-Report.rar

Body Content:

Dear Sir/Ma Please confirm attached transactions we got from your branch.. We have attached 2 different transfers in total of 300,750. We need you to confirm these transactions before they are released. Please Kindly Confirm Urgently. Thanks & Regards. LARI EXCHANGE CO. Main Branch DOHA ? SOUK AHMED BIN ALI PB No. 280, DOHA ? QATAR Tel . +974-4419010, +974-4419020 Fax. +974-4412224 Email : lariex@qatar.net.qa

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.

21 July 2021: Sendout-Copy.zip : Extracts to: Sendout_copy..js Current Virus total detections: Payload Security This is a JavaScript file that automatically downloads and runs http://ebhar.net/css/new_file_jacob.jar Which is the same Java Adwind Trojan as the Java.jar file in the second email

21 July 2021: Sendout-Report.rar: Extracts to: Sendout-Copy.jar Current Virus total detections: Payload Security

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 (https://en.wikipedia.org/wiki/Social_engineering_(security)) 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.

Total
0
Shares
Leave a Reply

Your email address will not be published.

Related Posts