Security experts from Flashpoint observed spam campaigns targeting US financial sectors Trickbot banking Trojan targeting financial sector.
Trickbot which is capable of launching MitB attacks originated in the middle of 2016 and it targets financial institutions outside of US.
From July 17, 2017, Flashpoint observed Trickbot campaign, known as “mac1,” targeting users of various financial institutions in U.S., U.K., New Zealand, France, Australia, Norway, Swedish, Iceland, Finland, Canada, Italy, Spain, Switzerland, Luxembourg, Belgium, Singapore, and Denmark.Also Read A Sophisticated Backdoor Called “Stantinko” Infected More Than 500,000 Computers
There should be at least three different spam waves the initial was with HTML file disguising as a bill from Australian Telecommunication company and other subsequent campaigns are through macro documents as an attachment.
These malicious emails contained a Zip-archived Windows Script File (WSF) attachment consisting of obfuscated JavaScript code. Upon being clicked, the files download and execute the Trickbot loader.
Once it infected the machine to trick the user it launches “CREATE_SUSPENDED” flag to kill the process used in launching the Trojan. Next, it creates %APPDATA% and copies it’s also then it adds it Authroot certificate in Temp directory.
Trickbot does contain importDll32, mailsearcher32, systeminfo32, injectDll32, and outlookDl32 modules.A detailed analysis report published by Flashpoint.
Flashpoint considers trickbot is Dyre’s successor or the Author used the old source code with updated functions.
Trickbot powered by the famous spambot Necurs, so it continues to emerge and it targets huge customer base it will be very crucial for organizations. Users should stay more vigilant.
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