Overview Recently, NSFOCUS Labs discovered that the South Asian APT organization SideWinder launched phishing attacks with documents used Pakistan National Day-related content as the bait. The domain name of command and control (C2) server was forged as a Pakistani government website. Since SideWinder ‘s targets include Pakistan and China, it has always been considered an […]
On December 9, 2021, the Log4j vulnerability was disclosed and had a huge impact. According to monitoring of NSFOCUS Threat Intelligence, hundreds of thousands of assets were affected by the vulnerability. A week after the vulnerability was disclosed, the NTI detected tens of thousands of malicious IP addresses using the Log4j vulnerability to launch various […]
Overview Recently, NSFOCUS CERT detected a Samba remote code execution vulnerability (CVE-2021-44142) disclosed online. Because the default configuration of Samba’s vfs_fruit module allows out-of-bounds heap read and write through extended file attributes. When smbd parses EA metadata, a remote attacker (guest account or unauthorized user) with write access to the file’s extended attributes can execute […]
Recently, NSFOCUS Security Labs captured a fishing document with the theme “ПАРТНЕРИ КУЛЬТУРНОЇ ДИПЛОМАТІЇ МЗС УКРАЇНИ” (Cultural Diplomatic Partner of the Ukrainian Ministry of Foreign Affairs), and confirmed that the producer of the document was Gamaredon, a Russia-based advanced persistent threat group. The phishing document contains highly credible bait content, and uses a payload protection method […]
Summary In July 2021, several phishing documents created in Georgian were discovered by NSFOCUS Security Labs. In these phishing documents, the attackers used current political hotspots in Georgia to create bait and deliver a secret stealing Trojan to specifically targeted victims aiming to steal various documents from their computers. Correlation analysis shows that this phishing […]
Overview On January 26, NSFOCUS CERT detected that the Qualys research team publicly disclosed a privilege escalation vulnerability (CVE-2021-4034) found in Polkit’s pkexec, also known as PwnKit. The vulnerability is due to the inability of pkexec to properly process the call parameters, thereby executing the environment variable as a command. An attacker with arbitrary user […]
Overview In July 2021, NSFOCUS Security Labs captured a number of phishing documents using windows 11 related topics as bait. These phishing documents show some ideas and techniques that are different from common phishing attacks. Through in-depth analysis, NSFOCUS Security Labs found that the phishing files are part of a large-scale spear attacks being carried out by […]
SASE (Security Access Services Edge) is a SaaS service that integrates security and network (To learn about what the SASE is, read SASE, Born for Digital Age). It incorporates too many new concepts. To make it easier to understand, we decided to post the popular science series on SASE, which can simplify the concepts so […]
MILPITAS, Calif. – January 28, 2022 – NSFOCUS, a leader in holistic hybrid security solutions, today released the 2021 Global DDoS Attack Landscape, a joint report by working with Tencent, which found that DDoS attacks have entered the terabit era with the largest DDoS traffic peaked at 2.4 Tbps (or 3.25 Tbps according the latest news […]
Overview On January 12, NSFOCUS CERT detected that Microsoft released a monthly security update, which fixed an HTTP protocol stack remote code execution vulnerability (CVE-2022-21907). A buffer overflow can occur due to a boundary error in the HTTP Trailer Support feature in the HTTP stack (HTTP.sys). An unauthenticated attacker can execute arbitrary code on a […]
