June 2026 Infostealer Trend Report
Contents This report summarizes the distribution channels, number of Infostealers, number of detections, and information on companies disguised by new Infostealers collected during June 2026. The collected samples were obtained through an automated data collection system, an email honeypot system, and an automated malware C2 analysis system operated by ASEC
Case Study: Distribution of a CoinMiner Targeting Linux SSH Servers via Malware Distribution via Network Transmission
The AhnLab SEcurity intelligence Center (ASEC) is monitoring attacks targeting poorly managed Linux servers using multiple honeypots. Recently, ASEC identified cases where malware with propagation capabilities was used to install the XMRig CoinMiner. In these attack cases, malware such as ShellBot, MIG LogCleaner, and XHide were used. The threat
Beware of Phishing Emails Disguised as Money Transfer Confirmations
Recently, the AhnLab SEcurity intelligence Center (ASEC) identified a case of phishing emails that disguise themselves as payment confirmation notices. 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 payment confirmation
Beware of Phishing Emails Disguised as Project Proposals
The AhnLab SEcurity intelligence Center (ASEC) recently confirmed that phishing emails disguised as project proposals are being circulated. The body of the email pretends to request that the proposal and confirmed delivery schedule be submitted as soon as possible, and prompts the recipient to download the attached compressed file.
Files Locked Behind a White Padlock: A Warning from WhiteLock Ransomware
If files start getting locked one by one and even remote access tools stop working, your system may already be infected with ransomware. The recently identified WhiteLock ransomware encrypts key files on Windows systems and then generates a ransom note demanding payment. A key characteristic of this ransomware is that
Vidar Infostealer Being Spread through Phishing Emails
1. Overview First identified in 2018, Vidar operates under a Malware-as-a-Service (MaaS) model and continues to be distributed through various attack cases to this day. AhnLab SEcurity intelligence Center (ASEC) has been monitoring cases of Vidar distribution targeting Korea, and this report summarizes the Vidar distribution cases identified in the
What is the true nature of the shortcut file I thought was a privacy consent form?
Evidence has recently emerged that Malicious Files posing as “Consent Forms for the Collection and Use of Personal Information” have been circulating. Threat actors use file names that are easily mistaken for work documents to trick users into running them. These files are not actual documents but shortcut files; when
It looks like a normal resume, but the infection begins the moment it is opened.
Malicious shortcut files disguised as resume files have recently been circulating, requiring corporate users to exercise caution. Threat actors name the files to resemble resume documents containing company names and job titles, and when executed, they display a legitimate decoy file alongside the malicious file to lower the user’s suspicion.
May 2026 Infostealer Trend Report
Content This report summarizes the distribution channels, number of infostealers, number of detections, target companies, and execution types of new infostealers collected during the month of May 2026. The collected samples were analyzed based on data from AhnLab SEcurity intelligence Center (ASEC)’s automated data collection system, Email Honeypot system, automated
May 2026 Security Issues in Korean & Global Financial Sector
Statistics on Malware Distributed to the Financial Sector In Attack Stage 1 targeting the financial sector in May 2026, phishing had the highest score at 2.3. This is the highest figure since December 2025, indicating that Initial Breach attempts are increasingly centered on phishing. In Attack Stage 2, Dropper/Downloader had
