Threats Tagged 't1546'

An authentication bypass vulnerability, CVE-2026-18577, affecting N-able N-central Remote Monitoring and Management platform has been actively exploited since August 1, 2026. This vulnerability emerged after an incomplete fix for a previous authentication bypass issue CVE-2026-18556. The flaw allows remote unauthenticated attackers to bypass authentication mechanisms and gain administrative control over vulnerable N-central servers. Attackers have exploited this vulnerability to leverage the platform's Take Control functionality for remote access to managed endpoints and deployed Cloudflare Tunnel (cloudflared) to establish persistent remote access. Given that N-central is widely used by managed service providers and enterprise IT teams with extensive administrative privileges, successful compromise provides attackers an efficient pathway to compromise downstream managed systems. CISA added this vulnerability to its Known Exploited Vulnerability catalog on August 3, 2026.

Elastic Security Labs analyzes VoidLink, a sophisticated Linux malware framework combining Loadable Kernel Modules (LKMs) and eBPF for persistence. The rootkit, developed by a Chinese-speaking threat actor, evolved through four generations, targeting kernels from CentOS 7 to Ubuntu 22.04. VoidLink employs advanced techniques like delayed initialization, runtime key rotation, and a hybrid LKM-eBPF architecture for comprehensive stealth. Notable features include an ICMP-based covert channel, process protection, and memfd-aware boot loading. Evidence suggests AI-assisted development, lowering the barrier for kernel-level rootkit creation. Detection strategies and defensive recommendations are provided to counter this emerging threat.

MediumMalwareUnited StatesChinaGermany+7#rootkit#stealth#ai-assisted

Google Threat Intelligence Group (GTIG) is tracking BRICKSTORM malware activity, which is being used to maintain persistent access to victim organizations in the United States. Since March 2025, Mandiant Consulting has responded to intrusions across a range of industry verticals, most notably legal services, Software as a Service (SaaS) providers, Business Process Outsourcers (BPOs), and Technology. The value of these targets extends beyond typical espionage missions, potentially providing data to feed development of zero-days and establishing pivot points for broader access to downstream victims.

MediumMalwareGermanyUnited KingdomFrance+3#windows#brickstorm#vpxd

A sophisticated phishing campaign targeting Japanese users employs MostereRAT, a Remote Access Trojan that utilizes advanced evasion techniques. The attack chain involves multiple stages, including an Easy Programming Language (EPL) payload, security tool disabling, and mTLS-secured C2 communications. The malware can deploy popular remote access tools like AnyDesk and TightVNC, granting attackers full system control. It employs techniques such as running as TrustedInstaller, blocking AV traffic, and creating hidden administrator accounts. The campaign's complexity and use of legitimate tools make detection and prevention challenging, highlighting the importance of user education and up-to-date security solutions.

MediumMalwareGermanyFranceUnited Kingdom+4#mostererat#remote access#epl

A sophisticated variant of the Android malware Konfety has been identified, employing advanced evasion techniques. The malware uses dual-app deception, ZIP-level evasion, dynamic code loading, and stealth techniques to conduct ad fraud and redirect users to malicious websites. It tampers with the APK's ZIP structure to bypass security checks and complicate reverse engineering. The malware loads encrypted assets at runtime, concealing critical functionality. It mimics legitimate apps, hides its icon, and uses geofencing to adjust behavior by region. The threat actors behind Konfety are highly adaptable, consistently updating their methods to evade detection and target various ad networks.

MediumMalwareGermanyFranceUnited Kingdom+4#android#caramelads sdk#konfety

ESET researchers uncovered a cyberespionage campaign by BladedFeline, an Iran-aligned APT group likely tied to OilRig. The group has targeted Kurdish and Iraqi government officials since at least 2017, using various malicious tools including the Whisper backdoor, PrimeCache IIS module, and reverse tunnels. BladedFeline maintains persistent access to high-ranking officials in both the Kurdistan Regional Government and Iraqi government, likely for espionage purposes. The group's toolset includes sophisticated backdoors, webshells, and custom tunneling applications. ESET assesses with medium confidence that BladedFeline is a subgroup of OilRig, based on shared code, targets, and tactics. The campaign also extended to a telecommunications provider in Uzbekistan.

MediumMalwareGermanyFranceUnited Kingdom+5#reverse tunnel#cyberespionage#backdoor

ESET researchers have uncovered a cyberespionage campaign conducted by BladedFeline, an Iran-aligned APT group likely tied to OilRig. The group has been targeting Kurdish and Iraqi government officials since at least 2017, using various malicious tools including reverse tunnels, backdoors, and a malicious IIS module. Key malware includes the Whisper backdoor, which communicates via compromised email accounts, and PrimeCache, a malicious IIS module with similarities to OilRig's RDAT backdoor. The campaign also targeted a telecommunications provider in Uzbekistan. BladedFeline's sophisticated tactics and tools indicate a focus on maintaining strategic access to high-ranking officials for espionage purposes.

MediumCampaignGermanyFranceItaly+5#whisper#apt#oilrig