An email with the subject of eFax pretending to come from eFax service but actually coming from a whole range of look-a-like domains with a malicious word doc attachment is today’s latest spoof of a well-known company, bank or public authority delivering Trickbot banking Trojan
They are using email addresses and subjects that will scare, persuade or entice you to read the email and open the attachment.
Remember many email clients, especially on a mobile phone or tablet, only show the Name in the From: and not the bit in <domain.com >. That is why these scams and phishes work so well.
eFax 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.
What has happened is that the criminals sending these have registered various domains that look like genuine Company, Bank, Government or message sending services. Normally there are between 2 and 4 newly registered domains that imitate Companies House, HMRC, another Government department, a Bank or a message sending service that can easily be confused with the genuine organisation in some way. Some days however we do see dozens or even hundreds of fake domains.
Today’s example of the spoofed domains are all using the free .ml domains that are administered and run by freenom.com.
I am seeing domains ranging from faxservice1.ml to faxservice80.ml all being hosted on different IP numbers & ranges all appearing to be compromised ISP IP numbers from major ISPs in UK, Europe & USA. In previous phishing and malware scams by this criminal gang they used a range of domain numbers between 1 and 600 over several days, so there could be a lot more to come.
Update: 20 October 2017: today’s version is using domains efaxservice161.ml to efaxservice234.ml
Update 23 October 2017: Still using efaxservice***.ml. efaxservice301.ml to efaxservice380.ml
Update 25 October 2017: Still using efaxservice***.ml. efaxservice501.ml to efaxservice599.ml
The email looks like:
From: eFax service <firstname.lastname@example.org>
Date: Thu 19/10/2017 14:50
Fax Message[Caller-ID: 1-232-675-5423]
You have received a 1-page fax at Thursday, 19 October 2017.
*The reference number for this fax is at did-1723445387-78513123678-543.
Please download and view Microsoft Word attachment
Please visit www.eFax.com/en/efax/twa/page/help if you have any questions regarding this message
or your service
This malware file downloads from http://acupuncturenorthwest.com/kas47.png which of course is not an image file but a renamed .exe file that gets renamed to Fcd-4.exe ( VirusTotal)
An alternative download location is http://www.agcofruit.com/kas47.png
This malware file downloads from http://voraushelfer-flieden.de/kas49.png which of course is not an image file but a renamed .exe file that gets renamed to Rw-nho-uxeb6.exe ( VirusTotal)
The macro in today’s version looks different to the usual ones and doesn’t appear to be running properly. I don’t know if it is anti-analysis protection or a mistake by the malware developer. The 2 urls discovered by decoding the macro are http://voraushelfer-flieden.de/kas49.png where I could get the payload manually ( neither online sandbox could). The other location did not give any file http://wmoreira.com/kas49.png
This malware doc downloads from http://xabieridoate.eu/kas52.png which of course is not an image file but a renamed .exe file that gets renamed to wrve.exe ( VirusTotal)
Alternative Download Site : http://websites4contractors.net/kas52.png
This malware doc downloads from http://websites4contractors.net/img/loransot.png which of course is not an image file but a renamed .exe file that gets renamed to mvrdcoqbki2.exe ( VirusTotal)
Alternative Download Site : http://umwelt.weiz.at/mambots/loransot.png
This email attachment contains a genuine word doc with a macro script that when run will infect you.
The word doc looks like:
All modern versions of word and other office programs, that is 2010, 2013, 2016 and 365, should open all Microsoft office documents that is Word docs, Excel spreadsheet files and PowerPoint etc that are downloaded from the web or received in an email automatically in “protected view” that stops any embedded malware or macros from being displayed and running. Make sure protected view is set in all office programs to protect you and your company from these sorts of attacks and do not over ride it to edit the document. If the protected mode bar appears when opening the document DO NOT follow the advice they give to enable macros or enable editing to see the content. The document will have a warning message, but you will be safe.
Be aware that there are a lot of other dodgy word docs spreading that WILL infect you with no action from you, if you are still using an out dated or vulnerable version of word. This is a good reason to update your office programs to a recent version and stop using office 2003 and 2007. Many of us have continued to use older versions of word and other office programs, because they are convenient, have the functions and settings we are used to and have never seen a need to update to the latest super-duper version.
The risks in using older version are now seriously outweighing the convenience, benefits and cost of keeping an old version going.[amazon_link asins=’B01NCOV3GC,B072R63CH7,B00DRP537A,B01EZU2GZW,B00JLPEL2I,B01EZU2RLA’ template=’ProductGrid’ store=’myonlinesecurity-21′ marketplace=’UK’ link_id=’6b07b5e0-8bb8-11e7-b516-fbffc7761b18′]
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. Also please read our post about word macro malware and how to avoid being infected by them
I strongly urge you to update your office software to the latest version and stop putting yourself at risk, using old out of date software.