Hackers Exploiting PDF24 App to Deploy Stealthy PDFSIDER Backdoor

Resecurity has identified PDFSIDER malware that exploits the legitimate PDF24 App to covertly steal data and allow remote access. Learn how this APT-level campaign targets corporate networks through spear-phishing and encrypted communications.

GootLoader uses malformed ZIP files to bypass security controls

GootLoader malware uses malformed ZIP files made of hundreds of concatenated archives to evade detection. GootLoader is used by ransomware actors for initial access, then handed off to others. Built to evade detection, it accounted for 11% of bypassing malware in the past years. GootLoader runs on an access-a-as-a-service model, it is used by different groups to […]

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 80

Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter Gogs 0-Day Exploited in the Wild SHADOW#REACTOR – Text-Only Staging, .NET Reactor, and In-Memory Remcos RAT Deployment   “Untrustworthy Fund”: targeted UAC-0190 cyberattacks against SOU using PLUGGYAPE (CERT-UA#19092)   Hiding in Plain Sight: Deconstructing the Multi-Actor […]

Security Affairs newsletter Round 559 by Pierluigi Paganini – INTERNATIONAL EDITION

A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. Ukraine–Germany operation targets Black Basta, Russian leader wanted China-linked APT UAT-8837 targets North American critical infrastructure […]

Ukraine–Germany operation targets Black Basta, Russian leader wanted

Police in Ukraine and Germany identified Black Basta suspects and issued an international wanted notice for the group’s alleged Russian leader. Ukrainian and German police raided homes linked to alleged Black Basta ransomware members, identifying two Ukrainian suspects. Law enforcement also issued an international wanted notice for the group’s alleged Russian ringleader. “The Office of […]

A ransomware attack disrupted operations at South Korean conglomerate Kyowon

South Korean conglomerate Kyowon confirmed a ransomware attack that disrupted operations and may have exposed customer data. Kyowon Group is a major South Korean conglomerate with diverse business interests spanning education, publishing, media, and technology. It operates nationwide, serving millions of customers through its various subsidiaries and brands. The company is a significant player in […]