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Intro 2021 witnessed a complex and changeable network security situation. Large-scale and targeted cyber attacks continue to grow. Critical information infrastructure is still the hardest hit area. Data leakages and industrial supply chain attacks occur frequently. While emerging technologies such as Big Data, Internet of Things, Artificial Intelligence and Mobile Payment boost the transformation and […]

Background Since 2022, the relationship between Russia and Ukraine has become increasingly tense. The two sides are at loggerheads and have deployed a large number of military personnel and equipment in the border areas of the two countries. However, since entering the 21st century, war is not limited to armed actions, but happens in other […]

Intro The world of cybersecurity is rapidly changing and technologies continue to evolve and innovate. While emerging technologies on big data, Internet of Things, artificial intelligence, mobile payment, just name a few, are helping digital transformation, new security risks expose constantly. Security incidents handled by NSFOCUS emergency response team in 2021 reaches 438, an increase […]

Overview Recently, NSFOCUS Security Labs captured a large number of phishing files against Ukraine in format of pdf, doc, cpl, lnk and other types. After analysis, we confirmed that the series of phishing activities came from the APT group Lorec53. During the period from the end of 2021 to February 2022, this group used multiple […]

Overview On February 9, NSFOCUS CERT detected that Microsoft released the February security update patch, which fixed 48 security issues involving widely used products such as Windows, Microsoft Office, Microsoft Dynamics, and Azure, including privilege escalation and remote code execution. and other high-risk vulnerability types. Among the vulnerabilities fixed by Microsoft’s monthly update this month, […]

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 […]