Following on from last Thursday and Friday when a ursnif campaign spoofing HMRC started to use blacktds via compromised SharePoint sites we have a fake Companies House campaign today using the same system.
Blacktds is a method of severely restricting who gets the malware. They can restrict IP ranges, OS types and even what browser is used.
Today’s email with the subject of CC(01) Company Complaint – 5GBV2LXEK5ULLKW pretending to come from Companies House but actually coming from a range of compromised or hacked sites and email addresses.
The email domain these are sent from is also the URL in the email body that will redirect to the fake Companies House site
Update: these continue to arrive everyday. Sometimes I am able to get the malware but in a high number of cases, all IP addresses available to me are blocked by the BlackTDS filtering system.
Some days I am seeing HMRC, other days they are using Companies House.
You can now submit suspicious sites, emails and files via our Submissions system
Companies House 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
So far I have only been sent 1 copy via our submissions system. I am sure there will have been dozens if not hundreds of compromised emails and sites sending these and diverting to the fake Companies House site.
https://companieshousereminders.org/webfiled/complaint.php which if you are in the list of allowed IP ranges will download a js file inside a zip from a compromised SharePoint account https://rainforestretreat-my.sharepoint.com/:u:/g/personal/foodandbev_rainforest_nz/Ebn-iyI44kBCrkKqDInHnXwBqLoJsyFBt0FE07SArIQIBA?e=l5xcby&download=1\
One of the emails looks like:
From: Companies House <firstname.lastname@example.org>
Date: Mon 25/06/2018 12:2
Subject: CC(01) Company Complaint – 5GBV2LXEK5ULLKW
This message has been generated in response to the company complaint submitted to Companies House WebFiling service.
(CC01) Company Complaint for the company was accepted on 25/06/2018.
• The submission number is 5GBV2LXEK5ULLKW
Please quote this number in any communications with Companies House.
View WebFiled document
All WebFiled documents are available to view / download for 10 days after their original submission.
Please quote your submission number in any communication with Companies House.
Thank you for using the Companies House WebFiling service.
Service Desk tel +44 (0)303 1234 700 or email email@example.com
This email was sent from a notification-only email address which cannot accept incoming mail. Please do not reply directly to this message.
companieshousereminders.org was registered on 24 June 2018 using a Chinese Registrar http://www.now.cn/ and hosted by OVH on 22.214.171.124 or 126.96.36.199All 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.
Be very careful with email attachments or following links in emails . 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.
http://panamajungletreks.com/submission (Compromised site)
Email from firstname.lastname@example.org ( compromised email account)
https://companieshousereminders.org/webfiled/complaint.php 188.8.131.52 184.108.40.206
https://rainforestretreat-my.sharepoint.com/:u:/g/personal/foodandbev_rainforest_nz/Ebn-iyI44kBCrkKqDInHnXwBqLoJsyFBt0FE07SArIQIBA?e=l5xcby&download=1\ ( compromised site)