Keybase keylogger via fake indofuels invoice

We don’t see a lot of malware at weekends in UK, so it was a bit of a surprise to get a whole swathe on emails overnight pretending to be an invoice from indofuels. The keylogger and info / credential stealer the criminals are using this weekend is Keybase,. I personally haven’t seen keybase for a couple of years, although reports of sporadic campaigns & infected computers are seen occasionally with a slight resurgence over the last week or so.  I thought keybase had effectively stopped being distributed or used a couple of years ago, when the original developer stopped selling it and cancelled many misused accounts. I can only assume someone has started it up again.

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

Indofuels 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 sending IP for these emails is a DigitalOcean droplet forwarding them from an AmazonAWS instance.

ISO files open & can be run natively in W8 & W10 by simply double clicking the iso file. W7 won’t natively extract the content so you need to use an extraction tool like Winrar   As you can see from the virustotal reports the .exe file is half the size of the iso.

Invoice.iso : Extracts to:  Invoice.exe             Current Virus total detections  [iso] [exe]:  Anyrun 

The C2 for this keylogger is http://lykaninvestment.ga/panel/   which is currently hosted on OVH canada on IP 158.69.138.121  ( This won’t stay up for long this weekend )

Keybase panel login

Keybase panel login

One of the  emails looks like:

From: Tse Lenora <This email address is being protected from spambots. You need JavaScript enabled to view it.>

Date:  Sat 21/09/2019 06:13

Subject:  RE:Invoice: 956279221/UEOC#LLA/2019 (Sept 2019)

Attachment:  Invoice.iso

Body content:

Greetings

I am sorry, but I was unable to reach you on phone so I am contacting you through this email about the status of this invoice below

Invoice: 956279221/UEOC#LLA/2019 (Sept 2019)

Best regards

Tse Lenora

Director

PT Indofuels Limited

Tel : +852 31889879

Email : This email address is being protected from spambots. You need JavaScript enabled to view it.

Website : http://www.indofuels.com

======================================================

Notice:

(1) It is not SPAM/Junk Mail but only regular e-mail of shipping & chartering business;

(2) If you are not interested in these biz areas and do not want to receive our mail again, please inform us;

(3) Please consider the environment before printing this e-mail.

Screenshot:

Fake Indofuels invoice

Fake Indofuels invoice

Email Headers:

IP Hostname City Region Country Organisation
68.183.44.6  London England GB AS14061 DigitalOcean, LLC
3.84.97.76  ec2-3-84-97-76.compute-1.amazonaws.com Virginia Beach Virginia US AS14618 Amazon.com, Inc.

Note: Only the final IP address outside of your network in the Received: fields can be trusted as others can be spoofed

Received: from [68.183.44.6] (port=55944 helo=vmin.integratedconsult.ga)
	by knight.knighthosting.co.uk with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256)
	(Exim 4.92)
	(envelope-from <This email address is being protected from spambots. You need JavaScript enabled to view it.>)
	id 1iBYYC-00089N-67
	for This email address is being protected from spambots. You need JavaScript enabled to view it.; Sat, 21 Sep 2019 07:07:20 +0100
Received: from EC2AMAZ-V5IM2BC.ec2.internal (ec2-3-84-97-76.compute-1.amazonaws.com [3.84.97.76])
	by vmin.integratedconsult.ga (Postfix) with ESMTPA id 1D8FEC1A38;
	Sat, 21 Sep 2019 05:44:43 +0000 (UTC)
Content-Type: multipart/mixed; boundary="===============0737034873=="
MIME-Version: 1.0
Subject: RE:Invoice: 956279221/UEOC#LLA/2019 (Sept 2019)
To: Recipients <This email address is being protected from spambots. You need JavaScript enabled to view it.>
From: "Tse Lenora" <This email address is being protected from spambots. You need JavaScript enabled to view it.>
Date: Sat, 21 Sep 2019 05:44:39 +0000

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- “Invoice.iso”sha256 ec0e442a3cb0b0a4964439ceb92b135cfa7618604ebceb88d62d3f511feb75c4sha1 c63397f2efb8b98fe1300d5fc67421f5eb8283cfmd5 6da8454474040e1a85df73e18446b239Dropped executable filesha256 C:\Users\admin\Desktop\Invoice.exe 913e2cf3065d7d91be7de2d9125b8f5d826939e21824b3c8970677718d34a734DNS requestsdomain lykaninvestment.gaConnectionsip 158.69.138.121HTTP/HTTPS requestsurl http://lykaninvestment.ga/panel/post.php?type=passwords&machinename=USER-PC&application=MS%20Outlook%202002/2003/2007/2010&link=192.168.1.1&username=This email address is being protected from spambots. You need JavaScript enabled to view it.&password=honeypass356url http://lykaninvestment.ga/panel/post.php?type=passwords&machinename=USER-PC&application=Chrome&link=https://www.facebook.com/&username=This email address is being protected from spambots. You need JavaScript enabled to view it.&password=honeypass356url http://lykaninvestment.ga/panel/post.php?type=passwords&machinename=USER-PC&application=Internet%20Explorer%207.0%20-%209.0&link=https://www.facebook.com/&username=This email address is being protected from spambots. You need JavaScript enabled to view it.&password=honeypass356url http://lykaninvestment.ga/panel/post.php?type=passwords&machinename=USER-PC&application=Opera&link=https://www.facebook.com&username=This email address is being protected from spambots. You need JavaScript enabled to view it.&password=honeypass356url http://lykaninvestment.ga/panel/post.php?type=notification&machinename=USER-PC&machinetime=10:31url http://lykaninvestment.ga/panel/image/upload.php

Read more https://myonlinesecurity.co.uk/keybase-keylogger-via-fake-indofuels-invoice/

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