AsyncRAT has emerged as a notable Remote Access Trojan (RAT) used by threat actors for its robust capabilities and ease of deployment. It gained favor for its extensive feature set, which includes keylogging, screen capturing, and remote command execution capabilities.
Its modular architecture, typically implemented in Python, provides flexibility and ease of customization, making it a preferred tool of choice for cybercriminals. During Trend Micro investigation of AsyncRAT infections, we observed Python scripts playing a central role in the infection chain, automating various stages of the attack. The initial payload, a Windows Script Host (WSH) file, was designed to download and execute additional malicious scripts hosted on a WebDAV server.
Read more…
Source: Trend Micro
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- Police arrest suspect over Microsoft 365 cyber attack
December 19, 2025
The Nigeria Police Force National Cybercrime Centre (NPF-NCCC) has apprehended a suspected cyber fraudster linked to coordinated attacks on Microsoft 365 email platforms used by corporate organisations. The arrest followed an intelligence-led investigation triggered by credible information from Microsoft Corporation in the United States, conveyed through the Federal Bureau of Investigation (FBI). The intelligence exposed the ...
- UK: NHS GP software supplier hit by cyber attack
December 19, 2025
DXS International which provides healthcare technology for the NHS has disclosed a cyber attack, which has led to data being stolen. The UK-based company provides software that helps to reduce costs for doctors and primary care physicians and is used by around 2,000 GPs which oversee the care of around 17 million patients. In a filing ...
- Denmark blames Russia for cyberattacks on water utility and local government websites
December 18, 2025
The Danish government has accused Russia of being behind two “destructive and disruptive” cyber-attacks in what it describes as “very clear evidence” of a hybrid war. The Danish Defence Intelligence Service (DDIS) announced on Thursday that Moscow was behind a cyber-attack on a Danish water utility in 2024 and a series of distributed denial-of-service (DDoS) attacks ...
- Critical vulnerabilities in Fortinet CVE-2025-59718, CVE-2025-59719 exploited in the wild
December 18, 2025
A recently disclosed pair of vulnerabilities affecting Fortinet devices—CVE-2025-59718 and CVE-2025-59719—are drawing urgent attention after confirmation of their active exploitation in the wild. The vulnerabilities carry a critical CVSSv3 score and allow an unauthenticated remote attacker to bypass authentication using a crafted SAML message, ultimately gaining administrative access to the device. Current information indicates that the ...
- From Linear to Complex: An Upgrade in RansomHouse Encryption
December 17, 2025
RansomHouse is a ransomware-as-a-service (RaaS) operation run by a group that we track as Jolly Scorpius. Recent samples of the associated binaries used in RansomHouse operations reveal a significant upgrade in encryption. This article explores the upgrade of RansomHouse encryption and the potential impact for defenders. Jolly Scorpius uses a double extortion strategy. This strategy combines ...
- Operation ForumTroll continues: Russian political scientists targeted using plagiarism reports
December 17, 2025
In March 2025, we discovered Operation ForumTroll, a series of sophisticated cyberattacks exploiting the CVE-2025-2783 vulnerability in Google Chrome. Kaspersky researchers previously detailed the malicious implants used in the operation: the LeetAgent backdoor and the complex spyware Dante, developed by Memento Labs (formerly Hacking Team). However, the attackers behind this operation didn’t stop at their ...

