New ATR Findings: Hidden Cobra Targets Financial Sector

Credit: Kanisis | Dreamstime.com

McAfee's Advanced Threat Research (ATR) group has discovered the cybercrime cabal Hidden Cobra continues to target cryptocurrency and financial organisations with the return of the Bankshot malware impact surfacing in the Turkish financial system.

Based on the code similarity, the victims business sector, and the presence of control server strings, the attack resembles previous attacks by Hidden Cobra conducted against the global financial network SWIFT.

In this new, more-aggressive attack, the Bankshot implant has returned after first appearing in 2017. Bankshot is designed to persist on a victims network for further exploitation, which is why the McAfee Advanced Threat Research team believes this operation is intended to gain access to specific financial organisations.

Based on the analysis, financial organisations in Turkey were targeted via spear phishing emails containing a malicious Microsoft Word document. The document contains an embedded Adobe Flash exploit, which was recently announced by the Korean Internet Security agency. The exploit, which takes advantage of CVE-2018-4878, allows an attacker to execute arbitrary code such as an implant.

Further investigation into the campaign shows that the infection occurred on March 2nd and 3rd. The implant’s first target was a major government-controlled financial organisation. It next appeared in another Turkish government organisation involved in finance and trade. A further three large financial institutions in Turkey were victims of this attack. The campaign suggests the attackers may plan a future heist against these targets by using Bankshot to gather information.

Bankshot implants are distributed from a domain with a name similar to that of the cryptocurrency-lending platform Falcon Coin, but the similar named domain is not associated with the legitimate entity. The malicious domain falcancoin.io was created on the 27th of December in 2017 and was updated on February 19th, just a few days before the implants began to appear. These implants are variations of earlier forms of Bankshot, a remote access tool that gives an attacker full capability on a victims system. This implant also contains functionality to wipe files and content from the targeted system to erase evidence or perform other destructive actions.

The Bankshot implant is attached to a malicious Word document with the filename Agreement.docx. The document appears to be an agreement template for Bitcoin distribution between an unknown individual in Paris and a to-be-determined cryptocurrency exchange. The document contains an embedded Flash script that exploits CVE-2018-4878 and downloads and executes the DLL implant from falcancoin.io.

The implants are disguised as ZIP files and communicate with three control servers, two of them Chinese-language online gambling sites. These URLs can be found hardcoded in the implants code.

The campaign has a high chance of success against victims who have an unmatched version of Flash. Documents with the Flash exploit managed to evade static defences and remain undetected as an exploit on VirusTotal.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Tags ATRHidden Cobra

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?