News – August 2023


  • Earth Estries Targets Government, Tech for Cyberespionage

    August 30, 2023

    Earlier this year, Trend Micro researchers discovered a new cyberespionage campaign by a hacker group we named Earth Estries. Based on their observations, Earth Estries has been active since at least 2020. The researchers also found some overlaps between the tactics, techniques, and procedures (TTPs) used by Earth Estries and those used by another advanced ...

  • Exploring the Inner Workings of DuckTail

    August 30, 2023

    In their persistent quest to decode DuckTail’s maneuvers, Zscaler ThreatLabz began an intelligence collection operation in May 2023. Through an intensive three-month period of monitoring, Zscaler researchers obtained critical details about DuckTail’s operational framework. This expedition granted them unprecedented visibility into DuckTail’s end-to-end operations, spanning the entire kill chain from reconnaissance to post-compromise. Zscaler team yielded valuable ...

  • Multiple Threats Target Adobe ColdFusion Vulnerabilities

    August 30, 2023

    This past July, Adobe responded to reports of exploits targeting pre-authentication remote code execution (RCE) vulnerabilities in their ColdFusion solution by releasing a series of security updates: APSB23-40, APSB23-41, and APSB23-47. An in-depth analysis of those exploits has been documented by Project Discovery, including a significant vulnerability in the WDDX deserialization process within Adobe ColdFusion ...

  • Diving Deep into UNC4841 Operations Following Barracuda ESG Zero-Day Remediation (CVE-2023-2868)

    August 29, 2023

    On June 15, 2023, Mandiant released a blog post detailing an 8-month-long global espionage campaign conducted by a Chinese-nexus threat group tracked as UNC4841. Over the course of this follow up blog post, Mandiant researchers will detail how UNC4841 has continued to show sophistication and adaptability in response to remediation efforts. Specifically, UNC4841 deployed new and ...

  • For the win? Offensive research contests on criminal forums

    August 29, 2023

    If you’re a security researcher who wants to share your innovations and insights with the wider community (and gain some peer recognition into the bargain), you’ve got a few options: present at conferences; write papers, blogs etc. The legitimate side of the house is awash with opportunities. But what if you’re a threat actor, whose research ...

  • CISA Releases IOCs Associated with Malicious Barracuda Activity

    August 29, 2023

    CISA has released additional indicators of compromise (IOCs) associated with exploitation of CVE-2023-2868. CVE-2023-2868 is a remote command injection vulnerability affecting Barracuda Email Security Gateway (ESG) Appliance, versions 5.1.3.001-9.2.0.006. Malicious threat actors exploited this vulnerability as a zero day as early as October 2022 to gain access to ESG appliances. Read more… Source: U.S. Cybersecurity and Infrastructure ...

  • Deconstructing ransomware, cybercriminals and their modus operandi

    August 29, 2023

    The problem of ransomware is a seemingly age-old problem that is not going away, at least not any time soon. Governments and law enforcement are banding together to try to battle this issue with financial sanctions and takedowns of the groups behind ransomware attacks but they’re like the mythical beast Hydra – take the head ...

  • Leaseweb trying to restore service following cyberattack

    August 28, 2023

    Cloud provider Leaseweb was forced to take some of its critical systems down to mitigate the effects of an ongoing cyberattack. One of the world’s largest cloud and hosting providers, Leasweb contacted its customers to alert them it spotted “unusual” activity in some parts of its infrastructure. To minimize the potential damages and oust the unauthorized ...

  • Personal Data Leaked After Cyber Attack on Maryland Schools

    August 28, 2023

    Prince George’s County, Md., Public Schools officials said some of the personal data stolen in a recent cyber attack has leaked online. The Washington, D.C., area school system is one of the 20 largest school districts in the U.S., with 201 schools and centers. The school system discovered an attack on its network on Aug. 14, ...

  • Poland investigates cyber-attack on rail network

    August 26, 2023

    Polish intelligence services are investigating a hacking attack on the country’s railways, Polish media say. Hackers broke into railway frequencies to disrupt traffic in the north-west of the country overnight, the Polish Press Agency (PAP) reported on Saturday. The signals were interspersed with recording of Russia’s national anthem and a speech by President Vladimir Putin, the ...