Analyzing a Multi-Stage AsyncRAT Campaign via Managed Detection and Response


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:

  • Metro Bank targeted with 2FA-bypassing SS7 attacks

    February 1, 2019

    Metro Bank has reportedly fallen victim to a sophisticated two-factor authentication (2FA) bypass attack after hackers infiltrated a telecoms firm’s text messaging protocol. The Signalling Systems No. 7 (SS7) protocol is used by telecom firms to coordinate how texts and calls are routed around the world. But according to Motherboard, hackers are more actively exploiting SS7, and ...

  • FBI Mapping ‘Joanap Malware’ Victims to Disrupt the North Korean Botnet

    January 31, 2019

    The United States Department of Justice (DoJ) announced Wednesday its effort to “map and further disrupt” a botnet tied to North Korea that has infected numerous Microsoft Windows computers across the globe over the last decade. Dubbed Joanap, the botnet is believed to be part of “Hidden Cobra“—an Advanced Persistent Threat (APT) actors’ group often known as ...

  • Prepare to Defend Your Network Against Swarm-as-a-Service

    January 31, 2019

    Swarm technology may be a game changer for the bad guys if organizations don’t change their tactics. The digital world we now inhabit creates unprecedented opportunities – both for good and for ill. One of these possibilities is swarm-based tools that can be used to either attack or defend the network. This possibility, or set of possibilities, ...

  • Theoretical Ransomware Attack Could Lead to Global Damages Says Report

    January 29, 2019

    According to a speculative cyber risk scenario prepared by Cambridge University for risk management purposes, a ransomware strain that would manage to impact more than 600,000 businesses worldwide within 24 hours would potentially lead to damages of billions not covered by insurers. First of all, it is important to understand that although the numbers look very scary, this type of ...

  • Global ransomware could cost almost $200bn

    January 29, 2019

    A global ransomware attack could cost $193 billion and affect more than 600,000 businesses worldwide, according to a new report. The report is called ‘Bashe Attack: Global infection by contagious malware’ and has been compiled by a Singapore-based public-private initiative called Cyber Risk Management. Lloyds of London is one of the initiatives founding members and posted ...

  • Hackers are going after Cisco RV320/RV325 routers using a new exploit

    January 27, 2019

    Security researchers have observed ongoing internet scans and exploitation attempts against Cisco RV320 and RV325 WAN VPN routers, two models very popular among internet service providers and large enterprises. ttacks started on Friday, January 25, after security researcher David Davidson published a proof-of-concept exploit for two Cisco RV320 and RV325 vulnerabilities. The vulnerabilities are: CVE-2019-1653 – allows a remote attacker to get sensitive device configuration details ...