APT

APT Group Lazarus Distributing Korean Phishing Lures to Feel Out Cryptocurrency Users

abril 12, 2022

Overview Recently, NSFOCUS Security Labs captured a series of phishing documents containing specific Korean bait information. Most of these documents contain keywords such as “BTC”, “ETH”, “NFT”, and “account information”, which trick victims into opening them and then use remote template injection to implant malicious programs, thereby stealing host information. Analysis shows that these phishing […]

APT Lorec53 group launched a series of cyber attacks against Ukraine

fevereiro 21, 2022

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 […]

India’s National APT Organization SideWinder Launched Phishing Attacks

fevereiro 17, 2022

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 […]

Russian APT Group Gamaredon Launches Phishing Campaign against Ukrainian Ministry of Foreign Affairs

fevereiro 10, 2022

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 […]

APT Retrospection: Lorec53, An Active Russian Hack Group Launched Phishing Attacks Against Georgian Government

fevereiro 8, 2022

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 […]

Overseas APT Organization Exploits Vulnerabilities to Breach Sangfor SSL VPNs and Deliver Malicious Code Threat Alert

abril 20, 2020

Overview

On April 6, Sangfor released an advisory, announcing that an overseas APT organization illegally took control of some of their SSL VPN devices and sent malicious files to clients by exploiting a client upgrade vulnerability. NSFOCUS has kept a close eye on this issue and conducted overall analysis. We advise related users to take precautions as soon as possible.

The vulnerability exists due to the defect of the upgrade module signature authentication mechanism of the Windows client of SSL VPN devices. The prerequisite for exploitation is that attackers must take control of SSL VPN privileges. According to Sangfor’s analysis, this vulnerability is difficult to exploit. Therefore, Sangfor estimates that there are only a limited number of affected VPN devices. According to the NSFOCUS security team, not many VPN devices have been compromised by the APT organization, but the affected versions are widely used in enterprises in China.

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Analysis of Phishing Attacks Targeting Ukrainian Banks

setembro 1, 2017

Overview On August 17, 2017, the National Bank of Ukraine (NBU) warned financial institutions in the country about a potential cyberattack. The virus would exploit the CVE-2015-2545 vulnerability to cause remote code execution by sending emails with the code disguised as a Microsoft Word document. Subsequently, a cybersecurity institution found traces of such an attack […]

Modern DDoS attacks: When Moore’s law meets Darwin’s Theory of Evolution

dezembro 4, 2015

Track:  General Security

Author: Dave Martin, Director of Product Marketing, NSFOCUS

DDoS attacks

What would happen if you combined Moore’s law with Darwin’s Theory of Evolution and applied them to DDoS attacks?  Unfortunately, modern DDoS attacks seem to embody this idea perfectly as both the frequency and complexity of these attacks have become truly staggering in just a short amount of time.

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