We are seeing an Ursnif /Gozi /ISFB campaign hitting the UK since yesterday. I was first alerted by this Twitter post. I started to investigate quickly last night and several much better researchers and analysts have taken over and found much more details. I posted some basic details in THIS Tweet. Then the main analysis appears via THIS. Whichever bad actor is running this campaign is using extremely good social engineering tricks to imitate multiple well known companies to persuade the recipient to follow the links and get infected.
Anyway back to this morning and Ursnif /Gozi /ISFB continues to target the UK, today with a fake Lloyds Bank Fraud alert with a PDF attachment containing a link to google docs to download a vbs file that in turn downloads the Malware binary.
Update. I am starting to see other fake Lloyds bank emails with a range of different subjects coming from various what look like compromised senders all with same email content & pdf attachment.
You can now submit suspicious sites, emails and files via our Submissions system
Remember many email clients only show the Name in the From: and not the bit in <domain.com >. That is why these scams,phishes and malware deliver campaigns work so well.
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.
This downloads a vbs file ( VirusTotal) from https://docs.google.com/uc?id=1R0ybQzfybvmes2v71jwlMHBvFe8-MVMy which in turn downloads the main ursnif /Gozi/ISFB binary from http://bitstag.com/Oracle_EXTACC_34v.exe . VirusTotal |
The C2 today is https://akamaicln.com/index.htm
One of the emails looks like:
From: LLoyds Fraud Protection Services <firstname.lastname@example.org>
Date: Thu 01/09/2016 19:22
Subject: Do you recognize each transaction listed above?
Lloyds Fraud Protection Services: Lloyds ATM or Lloyds Debit Card
Please notify us if you, or other person you authorized, used your Lloyds Debit or ATM Card for transaction logs which are attached.
Are all transactions listed above clear for you?
CONFIRM – call 0800 085 5714 (+44 1442 429942 if you are overseas.)
– Your Lloyds card remains active.
– If a purchase was declined, you will not be charged until you will try again.
DECLINE – dial 0800 085 2234 (+44 1442 426112 if you are overseas.)
– Your card will be blocked, and we’ll call you.
Lloyds Bank Anti-fraud Cardnet
Lloyds Banking Group plc. Registered Office: The Mound, Edinburgh EH1 1YZ. Registered in Scotland no. SC95000. Telephone 0131 225 1027. Lloyds Bank plc Registered Office: 25 Gresham Street, London EC2V 7HN. Registered in England & Wales # 6010. Telephone 0207626 1411. Bank Of Scrotland plc Registered Office: The Mound, Edinburgh EH1 1YZ. Registered in Sctorled # SC32700. Telephone: 03457 801 571. Cheltenham & Gloucester plc Registered Office: Barnett Way, Gloucester GL4 3RL. Registered in England & Wales 2298091. Telephone 0345 603 4925
Cardnet is a registered trademark of Lloyds Bank plc
PDF attachment looks like
All these malicious emails are either designed to steal your Passwords, Bank, PayPal or other financial details along with your email or FTP ( web space) log in credentials. Or they are Ransomware versions that encrypt your files and demand large sums of money 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.
There are frequently dozens or even hundreds of different download locations, sometimes delivering the exactly same malware from all locations and sometimes slightly different malware versions from each one. Dridex, Locky and many other malwares do update at frequent intervals during the day, sometimes as quickly as every hour, so you might get a different version of these nasty Ransomware or Banking password stealer Trojans to the version we list here.
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.