Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Attacks/Breaches

2/28/2020
05:05 PM
100%
0%

New Trickbot Delivery Method Focuses on Windows 10

Researchers discover attackers abusing the latest version of the remote desktop ActiveX control class introduced for Windows 10.

Researchers have identified the use of Windows 10 functionality to automatically execute the OSTAP JavaScript downloader on victim machines. In their investigation, they found other attack groups abusing the same control, and earlier controls, with a slightly different technique.

The functionality being exploited is the latest version of the remote desktop ActiveX control class introduced for Windows 10, Morphisec Labs analysts explain in a blog post. Over the past few weeks, they have identified "a couple dozen documents" that execute the OSTAP JavaScript downloader.

Attackers use the ActiveX control to automatically execute a malicious macro after a victim enables a document. Most documents held an image to convince people to enable the content. Doing this executed the malicious macro; however, the image also concealed an ActiveX control below it. The OSTAP downloader is hidden in white text so it's invisible to people but can be read by machines. Researchers report this technique will work only on Windows 10 devices.

"As newer features are introduced to a constantly updating OS, so too the detection vendors need to update their techniques to protect the system," according to the blog post. "This often creates very exhaustive and time-consuming work, which in turn can lead to the opposite effect of pushing defenders even farther behind the attacker." Trickbot attackers are taking advantage of this.

Read more details here.

Check out The Edge, Dark Reading's new section for features, threat data, and in-depth perspectives. Today's featured story: "How to Prevent an AWS Cloud Bucket Data Leak."

Dark Reading's Quick Hits delivers a brief synopsis and summary of the significance of breaking news events. For more information from the original source of the news item, please follow the link provided in this article. View Full Bio
 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Threaded  |  Newest First  |  Oldest First
Commentary
Cyberattacks Are Tailored to Employees ... Why Isn't Security Training?
Tim Sadler, CEO and co-founder of Tessian,  6/17/2021
Edge-DRsplash-10-edge-articles
7 Powerful Cybersecurity Skills the Energy Sector Needs Most
Pam Baker, Contributing Writer,  6/22/2021
News
Microsoft Disrupts Large-Scale BEC Campaign Across Web Services
Kelly Sheridan, Staff Editor, Dark Reading,  6/15/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
The State of Cybersecurity Incident Response
In this report learn how enterprises are building their incident response teams and processes, how they research potential compromises, how they respond to new breaches, and what tools and processes they use to remediate problems and improve their cyber defenses for the future.
Flash Poll
How Enterprises are Developing Secure Applications
How Enterprises are Developing Secure Applications
Recent breaches of third-party apps are driving many organizations to think harder about the security of their off-the-shelf software as they continue to move left in secure software development practices.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2021-32823
PUBLISHED: 2021-06-24
In the bindata RubyGem before version 2.4.10 there is a potential denial-of-service vulnerability. In affected versions it is very slow for certain classes in BinData to be created. For example BinData::Bit100000, BinData::Bit100001, BinData::Bit100002, BinData::Bit<N>. In combination with &lt...
CVE-2021-35041
PUBLISHED: 2021-06-24
The blockchain node in FISCO-BCOS V2.7.2 may have a bug when dealing with unformatted packet and lead to a crash. A malicious node can send a packet continuously. The packet is in an incorrect format and cannot be decoded by the node correctly. As a result, the node may consume the memory sustainabl...
CVE-2021-2322
PUBLISHED: 2021-06-23
Vulnerability in OpenGrok (component: Web App). Versions that are affected are 1.6.7 and prior. Easily exploitable vulnerability allows low privileged attacker with network access via HTTPS to compromise OpenGrok. Successful attacks of this vulnerability can result in takeover of OpenGrok. CVSS 3.1 ...
CVE-2021-20019
PUBLISHED: 2021-06-23
A vulnerability in SonicOS where the HTTP server response leaks partial memory by sending a crafted HTTP request, this can potentially lead to an internal sensitive data disclosure vulnerability.
CVE-2021-21809
PUBLISHED: 2021-06-23
A command execution vulnerability exists in the default legacy spellchecker plugin in Moodle 3.10. A specially crafted series of HTTP requests can lead to command execution. An attacker must have administrator privileges to exploit this vulnerabilities.