The next in the overnight malware campaigns is a fake Fedex Express email delivering Nanore RAT via an img ( Iso) file.
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
Fedex 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 domain fedexpay.com has been null routed to local host and is now controlled by Fedex to stop any criminals using it.
However the actual sending email server is a well known email sending service that is generally whitelisted in most spam filters Sendgrid.com who obviously are not doing a very good job of stopping this sort of malspam & abuse of their services. All of these mail delivery services should have some sort of filter to check the From box matches the envelope from and account sending name. It is so obvious that noreply.ycexpo2020.com should not be sending mail on behalf of Fedex. They also need to check the reply to address firstname.lastname@example.org to see this is an obvious scam or malware delivery.
C2 is testwork.kozow.com 220.127.116.11
One of the emails looks like:
From: FedEx Express <email@example.com>
Date:Tue 07/05/2019 22:09
Subject: Shipment For Pickup
Attachment: Shipment For Pickup.img
Ready For Pick Up
We have a parcel for you that needs collection. Attached is your collection voucher .
Please take along your voucher with you to your local FedEx center for easy collection
All details and instructions are in the attached voucher below.
Your Parcel will be held for 14 days before returning it back to the sender
FedEx Dispatch Processing Department.
FedEx Express Delivery Department.
• © 2019 Federal Express Corporation. The content of this message is protected by copyright and trademark
• Thank you for your business.
|18.104.22.168||o1.2e.shared.sendgrid.net||US||AS11377 SendGrid, Inc.|
|22.214.171.124||Buffalo||New York||US||AS36352 ColoCrossing|
Received: from o1.2e.shared.sendgrid.net ([126.96.36.199]:24644) by my email server with esmtps (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.91) (envelope-from <firstname.lastname@example.org>) id 1hO8EQ-0003LC-8y for email@example.com; Tue, 07 May 2019 23:07:21 +0100 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=ycexpo2020.com; h=content-type:mime-version:subject:to:from:reply-to; s=s1; bh=xF32Hjf2RAv58Mq1lnaPNiDQDWM=; b=ZVmGUzug2hByIYJF3GiLzT5Dszx4O OBzgfJfw3wj4GNfeZWABqCC3HDbIRGYqCASofkzELkR3M0/7jF8MJaQP4U83QkiU WIKDUFAayKhbiwQCF9sMYBxA5S+TAj+IZU+Xtv/LuMleg7aP0YXIMu1cUoCIuPFu boCA+1SqdzkF5Q= Received: by filter0525p1iad2.sendgrid.net with SMTP id filter0525p1iad2-25707-5CD1F3EC-20 2019-05-07 21:09:00.879868662 +0000 UTC m=+1035946.254853865 Received: from [188.8.131.52] (unknown [184.108.40.206]) by ismtpd0028p1iad2.sendgrid.net (SG) with ESMTP id LRclmKE0TGiDAwv-fupT_A Tue, 07 May 2019 21:09:00.683 +0000 (UTC) Content-Type: multipart/mixed; boundary="===============1655729283==" MIME-Version: 1.0 Subject: Shipment For Pickup To: FedEx <firstname.lastname@example.org> From: "FedEx Express" <email@example.com> Date: Tue, 07 May 2019 21:09:02 +0000 (UTC) Reply-To: firstname.lastname@example.org Message-ID: <LRclmKE0TGiDAwv-fupT_A@ismtpd0028p1iad2.sendgrid.net> X-SG-EID: uK/z5DzN+InY+FpkzqPqLR7xwqNSxU8ngksJVhwQe7tAJZV9FAB7I6X/XgGx2yUBNmtyk9oY/O04fk sg0cZpFpf3oBKm2mJHZ+M7Oi4fzEKgCIpi+AGCmcfaJKcyFUHfbviXgtXchp+Qxeolgb4AtR8b2LnW z1VZSiL39VD9FdbKX4jbYYR0/Eoas0l/e+4eoj1LkDvlHd3ybiMec3dV3bneCDjRvb8POCoe6vuNFU c=
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.
Main object- “Shipment For Pickup.img”
Dropped executable file
sha256 C:\Users\admin\Desktop\Shipment For Pickup.exe 45d84e84e02a244ba45a371290ea833858f9a380fc145f8d0b7a89ea95956b5a
sha256 C:\Users\admin\AppData\Roaming\ClipRenew\makecab.exe 4d0b336970756c1a2b6c31ec96cd9ae8d8d2394f82b5e917878a22989485db85