Nanocore RAT Via Fake Order Emails

Nanocore RAT Via Fake Order Emails

I was sent these 2 emails via the malware submission system on this site. 2 different emails coming from different senders, imitating or spoofing different companies. Both have iso attachments that extract to .exe files that try to pretend to be a pdf. These were sent to a German Recipient.

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

Neither of the alleged senders 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.
doc110119new order,pdf.iso : Extracts to: doc110119new order,pdf.exe Current Virus total detections: Anyrun |
Order 2019.01.14,pdf.iso : Extracts to: Order 2019.01.14,pdf.exe Current Virus total detections: Anyrun |

Both of these Nanocore RAT versions try to contact wealth.hopto.org which is supposed to be a redirect or dynamic IP service but appears to have been null routed by the service & gives a 0.0.0.0 IP address. Whether that is an action from the owners of the dynamic IP service http://freeddns.noip.com or whether it is a configuration error by the malware bad actor is open to discussion. I would have thought that cancelling the domain name would be the approach, but I suppose that null routing to local host 0.0.0.0 might give the security team at noip.com an insight into how many prospective victims of this malware campaign there are out there.

One of the emails looks like:

From: UKAI (MALAYSIA) SDN BHD <sales@ukai.com.my>
Date: Fri 11/01/2021 05:45
Subject: new order110119
Attachment: doc110119new order,pdf.iso

Body Content:

Good day,
Give us your best prices for this New order and quote delivery time.
My colleague responsible for Asia market have contacted your company
for this project but we lost out on the tender.
If we get a good offer, we will increase the quantity.

Waiting for your response!

Best Regards,
AISYAH OMAR
sales@ukai.com.my
TEL : +603-7981 9808
FAX : +603-7981 9809
ADDRESS: No. 7 & 9, Jalan Kuchai Maju 17,
Kuchai Entrepreneurs’ Park,
Off Jalan Kuchai Lama,
58200 Kuala Lumpur, Malaysia.

Screenshot:

Fake order email

The second version looks like:
From: Vineet Agarwal <vagarwal@indorama.com>
Date: Mon 14/01/2021 02:51
Subject: new order
Attachment: Order 2021.01.14,pdf.iso

Body Content:

Good Morning,
I am sending you a new order (for 2 containers), kindly refer to the
attached to review.
I have included all the goods we need in this new order.
I sent you this order on September 28 separately for this goods.
But in this new order, I increased their quantities (delete the order of
September 28).
Best regards,
Vineet Agarwal
————————————————–
INDORAMA INDUSTRIES LTD.
Graha Irama, 17th Floor,
Jl. H. R. Rasuna Said, Blok X-1, Kav 1-2,
Jakarta 129 50, Indonesia.
Phone + 62 21 526 1555 (ext. 1906)
Direct + 62 21 526 1576
Mobile : +628161140484
Indorama – Notice of Confidentiality : This transmission contains information that may be confidential and that may also be privileged. Unless you are the intended recipient of the message or authorized to receive it for the intended recipient, you may not copy, forward, or otherwise use it, or disclose it or its contents to anyone else. We
accept no liability for the content of this email, or for the consequences of any actions taken on the basis of the information provided. If you have received this transmission in error, please notify the sender immediately and delete it from your system.

Screenshot:

Fake Order Email

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:
doc110119new order,pdf.exe
MD5: ba0d366f18777ed533ab1617d830b3ae
SHA-1: d4712d7b712c22fc579172ae6b3863fbbb5ee35e
Order 2019.01.14,pdf.exe
50d80e56596398b1d426802253c67c0b
585fefa4d6a6841ced69cbc04dd8972b81a8b931
wealth.hopto.org

Derek

Derek