CyberSecurityBoard
Sponsor Register Login

AsyncRAT Malware Attacking the US Infrastructure

AsyncRAT is an open-source remote access Trojan malware known for its ability to provide unauthorized access and control over infected systems.
Hackers use it actively for various malicious purposes, including:-.
Cybersecurity researchers at AT&T recently discovered that AsyncRAT malware has been actively attacking the US infrastructure for 11 months.
APT Earth Berberoka has used this RAT, and recently, AT&T Alien Labs noted a phishing spike in September targeting individuals with gif attachments leading to:-.
The loader's stages are obfuscated by the C&C server that checks the victim for sandbox before deploying the AsyncRAT payload. C&C redirects to a harmless page when parameters are not met.
JavaScript files delivered via phishing with obfuscated strings like:-.
The loader versions vary for each victim with randomized variable names, constants, and URL representation.
After the GET request, C&C sends base64 script XOR'ed against a hardcoded key, unpacked with Gunzip, and executed flawlessly in PowerShell.
The C&C values like 1b are correct, while 2c and other wrong answers have higher values.
C&C may have a table of valid responses or a value range that helps in avoiding brute force.
Invalid answer redirects to Google or returns a new script reaching out to payload in temp[.
Sh link is consistent across samples and time, which helps in hosting the files for three days with new randomized URL paths.
The code dynamically changes and is heavily obfuscated for detection evasion, but network infrastructure remains consistent.
The samples use a variety of domains that are frequently updated, and among them, the common domains include:-.
Here below, we have mentioned all the characteristics that are followed by the domain structure:-.
The Domain Generation Algorithm calculates a unique domain every seven days and on every Sunday, it generates a new one.
The seed, which is derived from the day of the year, undergoes modifications for variation that includes changes to other variables and characters in the scripts.
This strategy helps threat actors avoid detection and blocking by automatically changing the C&C domain over time.


This Cyber News was published on gbhackers.com. Publication date: Mon, 08 Jan 2024 14:43:05 +0000


Cyber News related to AsyncRAT Malware Attacking the US Infrastructure

November 2023's Most Wanted Malware: New AsyncRAT Campaign Discovered while FakeUpdates Re-Entered the Top Ten after Brief Hiatus - Researchers reported on a new AsyncRAT campaign where malicious HTML files were being used to spread the stealthy malware. Our latest Global Threat Index for November 2023 saw researchers discover a AsyncRAT campaign where malicious HTML files were ...
6 months ago Blog.checkpoint.com
Types of Malware and How To Prevent Them - Malware is one of the biggest security threats to any type of technological device, and each type of malware uses unique tactics for successful invasions. Even if you've downloaded a VPN for internet browsing, our in-depth guide discusses the 14 ...
1 week ago Pandasecurity.com
This Malware is Assaulting Critical US Infrastructure for Almost a Year - Over the course of the last 11 months, a threat group has actively engaged in a phishing campaign targeting employees across various companies, distributing an open-source trojan program named AsyncRAT. The victims of this campaign notably include ...
5 months ago Cysecurity.news
AsyncRAT Malware Attacking the US Infrastructure - AsyncRAT is an open-source remote access Trojan malware known for its ability to provide unauthorized access and control over infected systems. Hackers use it actively for various malicious purposes, including:-. Cybersecurity researchers at AT&T ...
5 months ago Gbhackers.com
Stealthy AsyncRAT malware attacks targets US infrastructure for 11 months - A campaign delivering the AsyncRAT malware to select targets has been active for at least the past 11 months, using hundreds of unique loader samples and more than 100 domains. AsyncRAT is an open-source remote access tool for Windows, publicly ...
5 months ago Bleepingcomputer.com
PixPirate: The Brazilian financial malware you can't see, part one - The constantly mutating PixPirate malware has taken that strategy to a new extreme. PixPirate is a sophisticated financial remote access trojan malware that heavily utilizes anti-research techniques. Within IBM Trusteer, we saw several different ...
5 months ago Securityintelligence.com
How to Remove Malware + Viruses - Malware removal can seem daunting after your device is infected with a virus, but with a careful and rapid response, removing a virus or malware program can be easier than you think. We created a guide that explains exactly how to rid your Mac or PC ...
2 months ago Pandasecurity.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com
Stemming the Tide: Solving the Challenge of Password Reuse and Password-Stealing Malware - Password stealing malware is again rising with several attacks making the news cycle in recent months. A new password-stealing malware named Ov3r Stealer was discovered on Facebook Ads, spreading by way of fake job opportunities. Further analysis ...
1 month ago Cybersecurity-insiders.com

Latest Cyber News


Cyber Trends (last 7 days)


Trending Cyber News (last 7 days)