Tag: COLLECTION

Security researcher HaxRob discovered a previously unknown Linux backdoor named GTPDOOR, designed for covert operations within mobile carrier networks.

The threat actors behind GTPDOOR are believed to target systems adjacent to the GPRS roaming eXchange (GRX), such as SGSN, GGSN, and P-GW, which can provide the attackers direct access to a telecom’s core network.…

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On February 29, 2024, the Cybersecurity and Infrastructure Security Agency (CISA), the Federal Bureau of Investigation (FBI), and the Multi-State Information Sharing and Analysis Center (MS-ISAC) released a joint Cybersecurity Advisory (CSA) which disseminates known Tactics, Techniques, and Procedures (TTPs) and Indicators of Compromise (IOCs) associated with the Phobos Ransomware variants observed as recently as February 2024.…

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Table of contentsContext

Since the onset of the War in Ukraine, various groups identified as “nationalist hacktivists” have emerged, particularly on the Russian side, to contribute to the confrontation between Kyiv and Moscow. Among these entities, the pro-Russian group NoName057(16) has garnered attention through the initiation of Project DDoSia, a collective endeavour aimed at conducting large-scale distributed denial-of-service (DDoS) attacks, targeting entities (private corporations, ministries and public institutions) belonging to countries supporting Ukraine, predominantly NATO member states.…

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Key TakeawaysIn February 2023, we detected an intrusion that was initiated by a user downloading and executing a file from a SEO-poisoned search result, leading to a Gootloader infection.Around nine hours after the initial infection, the Gootloader malware facilitated the deployment of a Cobalt Strike beacon payload directly into the host’s registry, and then executed it in memory.…
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SUMMARY

Note: This joint Cybersecurity Advisory (CSA) is part of an ongoing #StopRansomware effort to publish advisories for network defenders that detail various ransomware variants and ransomware threat actors. These #StopRansomware advisories include recently and historically observed tactics, techniques, and procedures (TTPs) and indicators of compromise (IOCs) to help organizations protect against ransomware.…

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____________________ Summary: The article discusses the Azure Batch service and highlights potential areas for misconfigurations and sensitive data exposure. It explains how the service functions as a middle ground between Azure Automation Accounts and a full deployment of an individual Virtual Machine. The article also mentions the risks associated with Reader and Contributor access to Batch, such as reading sensitive data and gaining access to SAS tokens.…

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Key PointsAvast discovered an in-the-wild admin-to-kernel exploit for a previously unknown zero-day vulnerability in the appid.sys AppLocker driver.  Thanks to Avast’s prompt report, Microsoft addressed this vulnerability as CVE-2024-21338 in the February Patch Tuesday update.  The exploitation activity was orchestrated by the notorious Lazarus Group, with the end goal of establishing a kernel read/write primitive. …
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Today Mandiant is releasing a blog post about suspected Iran-nexus espionage activity targeting the aerospace, aviation and defense industries in Middle East countries, including Israel and the United Arab Emirates (UAE) and potentially Turkey, India, and Albania. 

Mandiant attributes this activity with moderate confidence to the Iranian actor UNC1549, which overlaps with Tortoiseshell—a threat actor that has been publicly linked to Iran’s Islamic Revolutionary Guard Corps (IRGC).…

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Here at Bitdefender, we’re constantly working on improving detection capabilities for our macOS cyber-security products; part of this effort involves revisiting old (or digging up new) samples from our malware zoo. During routine verifications, we were able to isolate multiple suspicious and undetected macOS disk image files surprisingly small for files of this kind (1.3 MB per file).…

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Cisco Talos has discovered a new campaign operated by a threat actor distributing a previously unknown malware we’re calling “TimbreStealer.”This threat actor was observed distributing TimbreStealer via a spam campaign using Mexican tax-related themes starting in at least November 2023. The threat actor has previously used similar tactics, techniques and procedures (TTPs) to distribute a banking trojan known as “Mispadu.”…
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“SubdoMailing” — Thousands of Hijacked Major-Brand Subdomains Found Bombarding Users With Millions of Malicious Emails

By Nati Tal, Oleg Zaytsev (Guardio Labs)

Guardio Labs uncovers a sprawling campaign of subdomain hijacking, compromising already over 8,000 domains from esteemed brands and institutions, including MSN, VMware, McAfee, The Economist, Cornell University, CBS, Marvel, eBay and others.…

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