1. Overview The AhnLab SEcurity intelligence Center (ASEC) continuously monitors various threats targeting Linux environments. Techniques that modify the Linux kernel to conceal malware and signs of compromise have been used for a long time, and Syslogk is one such rootkit that operates in this manner. This document provides an analysis of the key features […]

The AhnLab SEcurity intelligence Center (ASEC) recently identified attack cases that exploited Radmin and UltraVNC. Although the Initial Intrusion method remains unknown, the attackers installed Radmin—a remote control tool—and then installed UltraVNC. The threat actors exploited the remote control tools to gain control of the infected systems and installed Netch and CCProxy to use the […]

ASEC Blog publishes Ransom & Dark Web Issues Week 1, September 2026           ZaWoo Data Extortion Attacks Against Multiple Organizations Worldwide Black X Ransomware Attack on a South Korean Automotive Parts Manufacturer Internal Data of a South Korean Asset Management and Investment Firm Offered for Sale

  People who initially seem fine but tend to subtly avoid others as the relationship deepens or when conflicts arise—and who disappear when pressured—are commonly referred to as “avoidant types.” By repeatedly pulling away only to reappear, they drain the other person’s emotions and energy, ultimately undermining the relationship. The attack pattern of the recently […]

A request to review the purchase of seafood ingredients arrived. When the file is opened, a normal hwp document appears, but while the user is reviewing the contents, a malicious script runs in the background and even registers a scheduled task. It then extracts system information to an external location, downloads and executes additional commands, […]

ASEC Blog publishes Ransom & Dark Web Issues Week 4, August2026           Saudi Arabian Digital Entertainment Streaming Service User Data Offered for Sale SAFEPAY Ransomware Attack on a South Korean Industrial Gas Manufacturer and Supplier NoName057(16) and BD Anonymous Claim DDoS Attacks Against Major Japanese Organizations and Companies [1] [2] [3] […]

ASEC Blog publishes Ransom & Dark Web Issues Week 3, August 2026         Customer and Operational Data of a South Korean Delivery Platform Offered for Sale Unauthorized Access Incident at a Japanese Cloud and Data Center Services Company ShinyHunters Threatens Data Disclosure Against a U.S. Live-Streaming Platform

The AhnLab SEcurity intelligence Center (ASEC) recently identified a phishing email campaign that disguised itself as a request to review a quote. The threat actor impersonated a sales team member at a specific overseas company and, by claiming that a previous quote needed to be revised and product versions verified, tricked recipients into opening the […]

The AhnLab SEcurity intelligence Center (ASEC) recently identified attack cases in which attackers targeted web servers in Korea to install SoftEther VPN. Attack cases involving the installation of SoftEther VPN, an open-source VPN, were previously discussed in the 2024 ASEC blog post titled “Analysis of Attack Cases Targeting ERP Servers in Korea to Install SoftEther […]

Recently, the AhnLab SEcurity intelligence Center (ASEC) identified instances of phishing emails that were disguised as transaction receipts. The emails impersonated employees of a specific US company. The body of the message stated that a transaction receipt was attached and asked the recipient to review it and confirm whether funds had been deposited into their […]

ASEC Blog publishes Ransom & Dark Web Issues Week 2, August 2026.           DragonForce Ransomware Attack on a South Korean Online Education Company Qilin Ransomware Attack on a South Korean Motor and Robotics Manufacturer ShinyHunters Claims Data Leak from a U.S. Digital Healthcare Company

ASEC Blog publishes Ransom & Dark Web Issues Week 1, August 2026           South Korean Automotive Parts Manufacturer’s Internal Server Access and Database Offered for Sale Data of a Turkish HR Consulting Company Offered for Sale Gunra Ransomware Attack on a South Korean Heavy Equipment Parts and Advanced Materials Manufacturer

1. Overview AhnLab SEcurity intelligence Center (ASEC) recently confirmed that the Larva-26005 threat actor is distributing Xctdoor to users in Korea. Xctdoor was disclosed through the ASEC blog in 2024, and [1] In March 2026, Hauri disclosed an attack case in which the malware was disguised as an integrated security program. [2]   While analyzing […]

The Larva-24009 threat actor has been active since at least 2023, carrying out phishing email attacks targeting users both in Korea and globally to install malware. ASEC (AhnLab SEcurity intelligence Center (ASEC) has previously disclosed attack cases by this threat actor in 2024, and [1] [2] [3] Subsequently, Cyble also identified this same attack campaign […]

This technical analysis report was prepared as part of the joint cybersecurity advisory titled “Advisory on Cyberattacks Targeting Korean Citizens and Businesses by State-Sponsored Hacking Groups” issued by the Republic of Korea’s National Intelligence Service (NIS), National Police Agency (NPA), Korea Internet & Security Agency (KISA), and Financial Security Institute (FSI).   OverView AhnLab SEcurity […]

ASEC Blog publishes Ransom & Dark Web Issues Week 5, July 2026           Termite Ransomware Attack on a U.S. Nonprofit Healthcare Provider ShinyHunters Claims Data Leak Involving a Global Accounting and Consulting Firm The Gentlemen Ransomware Attack on a South Korean IT Software Distributor and Infrastructure Service Provider

While monitoring attack cases targeting MS-SQL servers, the AhnLab SEcurity intelligence Center (ASEC) identified an instance in which the Larva-26009 threat actor installed the XMRig CoinMiner. While the installation of CoinMiner is common in attack cases targeting MS-SQL servers, in this particular attack case, the attacker installed VShell and GotoHTTP to gain control over the […]

ASEC Blog publishes Ransom & Dark Web Issues Week 4, July 2026           Source Code Collection of a South Korean Autonomous Robot Manufacturer Shared on a Cybercrime Forum Qilin Ransomware Attack on a Spanish Public Wastewater Management Organization RansomHouse Ransomware Attack on a Japanese Frozen Food and Logistics Company

AhnLab SEcurity intelligence Center (ASEC) previously disclosed an attack case in which the Kimsuky group used spear phishing attacks to install the PebbleDash malware in a post titled “Analysis of the Kimsuky Group’s Latest Attacks Exploiting PebbleDash and RDP Wrapper” [1]. The same threat actors have continued their activities in 2026 and have recently been […]

ASEC Blog publishes Ransom & Dark Web Issues Week 3, July 2026           DragonForce Ransomware Attack on a Saudi Arabian Chemical Manufacturer AiLock Ransomware Attack on Japan’s Largest Taxi and Limousine Operator Cyberattack on Japan’s Largest Frozen Food Company Disrupts the Wider Food Supply Chain