Fake Autec Power Purchase Order Delivers Nanocore RAT

Fake Autec Power Purchase Order Delivers Nanocore RAT

This is a version of Nanocore RAT being delivered via a fake Purchase Order. The file has an invalid, Expired Digital Signature that says Google. It is reasonably well detected by Antiviruses although most of them are Generic / Heuristic detections. This attempts to connect to a dynamic DNS service youngboss84.ddns.net. It looks like the dynamic dns service that has shut it down because we are given a 0.0.0.0 IP address as a look up .

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.

You can now submit suspicious sites, emails and files via our Submissions system

Neither the alleged sender michele@micheleamadori.it nor any person or the company Autec Power named in the email body has 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 emails come from what is likely to be fraudulently set up account mail.plde.gq hosted by OVH

192.99.27.58  mail.plde.gq Newark New Jersey US AS16276 OVH SAS

NEW_PO_210120191_AUCTEC_POWER_SYSTEMS.pdf.zip : Extracts to: NEW_PO_210120191_AUCTEC_POWER_SYSTEMS.pdf.exe    Current Virus total detections: Anyrun App |
This malware file downloads from

One of the emails looks like:
From: Tom (Gr) <michele@micheleamadori.it>
Date: Tue 29/01/2021 19:59
Subject: Dear security NEW PO_21012019178_AUTEC_POWER_SYSTEM
Attachment: NEW_PO_210120191_AUCTEC_POWER_SYSTEMS.pdf.zip

Body Content:

Hello security,
Dear Sirs/ma’am ,
It is Tom of the purchasing team of autec power systems
We will send you the order form,
please confirm attached file and proceed..
awaiting your prompt response take this order as urgent.
Please do your best
Thanks, Tom
Best Regards,
Tom Moody
Autec Power Systems
31328 Via Colinas Suite 102
Westlake Village, CA 91362 USA
Office: +1-818-338-7788 · Direct: +1-818-338-7706 · Mobile: +1-
818-749-6769
Email: tom@autecpower.com / www.autecpower.com

Screenshot:

Fake Autec purchase order

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.
:
IOC:
Main object- “NEW_PO_210120191_AUCTEC_POWER_SYSTEMS.pdf.exe”
sha256 520db31b2cf04907f315c364d6a0410d03620cee0af071a66dcc2afa65fa5962
sha1 182ac8ea7cd3d679e542e88c319e62b8edbdb6da
md5 dbaf36fc45b3bf847284101d9dfeac3a
DNS requests
domain youngboss84.ddns.net
Connections
ip 91.192.100.7

Derek

Derek