September 2026 Threat Trend Report on Ransomware
Purpose and Scope This report summarizes the quantity of new ransomware samples collected, the number of compromised systems, and statistics on targeted businesses during the month of September 2026, as well as major Korean & global ransomware issues. The analysis is based on data collected through ATIP (AhnLab Threat Intelligence
Beware of Phishing Emails Disguised as Purchase Orders
Recently, the AhnLab SEcurity intelligence Center (ASEC) identified instances of phishing emails being circulated that disguise themselves as requests to confirm purchase orders. The email body asks recipients to review the attached purchase order and reply with the relevant information, prompting users to download and open the attached DOCX file.
RMM tools currently being distributed through phishing attacks (ScreenConnect, FleetDeck, Datto, SimpleHelp, JumpCloud, N-able)
In January 2026, the AhnLab SEcurity intelligence Center (ASEC) reported on attack cases that distributed RMM (Remote Monitoring and Management) tools through video files or attachments in phishing emails. [1] [2] In these attack cases, tools such as Syncro, ConnectWise ScreenConnect, NinjaOne, and SuperOps were exploited. RMM (Remote Monitoring and
From Endpoint to Funhouse: Evolution of Ransomware Families and Kimsuky-Linked Distribution Cases
1. Overview AhnLab SEcurity intelligence Center (ASEC) recently identified a case in which the Kimsuky group ultimately distributed the Funhouse ransomware via a malicious Hangul document that was disguised as a resume. The Funhouse ransomware was identified as a variant of previously disclosed endpoint ransomware, and the tools used in
Beware of Malware infection in Facebook Ads Offering Cryptocurrency Rewards
Just because it’s a familiar tactic doesn’t mean you can let your guard down. A similar attack method using cryptocurrency rewards as bait has recently been identified again. This time, a case was confirmed in which the Node.Js-based malware JSCEAL was distributed through Facebook ads impersonating a cryptocurrency exchange. The
Vulnerability Attack Case: Installation of a Web Shell and Execution of a Scanner by Exploiting a Telerik UI Vulnerability
The AhnLab SEcurity intelligence Center (ASEC) has identified two vulnerability attack cases that exploited a remote code execution vulnerability (CVE-2019-18935) targeting unpatched Telerik UI for ASP.NET AJAX servers. In the first incident, after exploiting the vulnerability, the attacker executed a reverse shell, attempted to perform privilege escalation, and installed a
Beware of Phishing Emails That Disguise Themselves as Project Material Purchase Requests
Recently, the AhnLab SEcurity intelligence Center (ASEC) identified a case of phishing emails that disguise themselves as project material purchase request forms. These emails impersonate employees of a specific company in Korea and trick recipients into opening a malicious XLS file attached to the email, which is disguised as a
Beware of phishing emails disguised as quote requests
Recently, the AhnLab SEcurity intelligence Center (ASEC) confirmed that phishing emails disguised as requests for project quotes are being circulated. The email body is disguised as a request to submit a quote for discussing the project budget and prompts recipients to download an attached compressed file for verification. [Figure
SilverFox: Tracking the Distribution of a Domestic Variant of a Malicious Installation File Posing as KakaoTalk
The threat actor used SEO poisoning (a technique that exploits search results to redirect users to fake sites) to distribute a malicious installer disguised as a KakaoTalk installer. The appearance and packaging method of the installer changed continuously, and the threat actor sequentially used NSIS, Advanced Installer, and Inno Setup.
