April 2026 Threat Trend Report on Ransomware
Purpose and Scope this report summarizes ransomware-related statistics based on Dedicated Leak Sites (DLS) (ransomware PR sites or PR pages) and Quantity of ransomware damaged systems identified during the month of April 2026. it also provides major ransomware issues in Korea and abroad and Damage Trends by Industry/Region. Key Statistics
April 2026 Phishing Email Trends Report
Statistics on Attachment Threat Types in April 2026, the most common threat in phishing email attachments was Trojan (47%). this type was distributed by disguising itself with a double extension or a legitimate file name to trick the user into executing it and installing malware on the system. they continued
March 2026 Phishing Email Trends Report
Statistics on Attachment Threats Types. trojans accounted for the largest share of attachment-based threats in March 2026 at 21%. phishing (FakePage) came in at 15%, with a significant month-over-month decrease in share from 42% to 15%, but a slight decrease in volume. downloaders were identified at 9% and droppers at
March 2026 Security Issues in the Korean & Global Financial Sector
Content. a number of malware samples including phishing, web shell, droppers, backdoor malware, downloaders, Infostealer, and CoinMiner targeting the financial sector have been distributed. we observed a number of cases where Korean disguised attachment names and HTML/JS execution methods were utilized to propagate phishing. account compromise campaigns through the Telegram
March 2026 Ransomware Trends Report
Purpose and Scope. this report summarizes the number of ransomware samples, number of affected systems, DLS-based statistics, and major Korean & Global ransomware issues identified during the month of March 2026. Key statistics. ransomware sample counts and victimized systems statistics were aggregated by detection name assigned by AhnLab. statistics on
LOLBins – Analysis of MSBuild-Based Attack Techniques
Overview In recent years, cyber threat actors have consistently attempted to exploit living off the land binaries (LOLBins) built into systems to bypass detection by security products. Such attack methods effectively evade traditional signature-based detection by not distributing a separate malicious file, but instead relying on tools trusted by the
March 2026 Infostealer Trend Report
Description. this report analyzes Infostealer distribution trends and cases collected during the month of March 2026. It is based on data collected through ASEC’s automated collection and analysis system and ATIP’s real-time IOC service. Purpose and Scope. the purpose of the analysis is to identify trends in the volume, distribution
Malicious LNK Files Distributing a Python-Based Backdoor and Changes in Distribution Techniques (Kimsuky Group)
Overview AhnLab SEcurity intelligence Center (ASEC) recently identified a change in the Kimsuky group’s method of distributing malicious LNK files. The overall attack flow remains the same as before, with a malicious LNK ultimately executing a Python-based backdoor or downloader. However, a structural change was observed in the intermediate execution
Attack Targeting MS‑SQL Servers to Deploy the ICE Cloud Scanner (Larva-26002)
AhnLab SEcurity intelligence Center (ASEC) has confirmed that the Larva-26002 threat actor continues to target improperly managed MS-SQL servers in 2026. The Larva-26002 threat actor has distributed Trigona and Mimic ransomware in the past, and has since seized control of infected systems and installed scanners. The latest confirmed attack utilizes
Winos4.0 Malware Disguised as KakaoTalk Installer
Distribution Method – SEO Poisoning Typically, people perceive the sites that appear at the top of Google search results as the “most authoritative and official” sites. however, threat actors are playing on the psychology of such users, manipulating the search engine’s algorithms to place malicious sites at the top. SEO
