Cybersecurity researchers have discovered a new Apple macOS backdoor called SpectralBlur that overlaps with a known malware family that has been attributed to North Korean threat actors. “SpectralBlur is a moderately capable backdoor that can upload/download files, run a shell, update its configuration, delete files, hibernate, or sleep, based on commands issued from the [command-and-control […]
Tactical and targeting overlaps have been discovered between the enigmatic advanced persistent threat (APT) called Sandman and a China-based threat cluster that’s known to use a backdoor referred to as KEYPLUG. The assessment comes jointly from SentinelOne, PwC, and the Microsoft Threat Intelligence team based on the fact that the adversary’s Lua-based malware LuaDream and […]
Organizations in the Middle East, Africa, and the U.S. have been targeted by an unknown threat actor to distribute a new backdoor called Agent Racoon. “This malware family is written using the .NET framework and leverages the domain name service (DNS) protocol to create a covert channel and provide different backdoor functionalities,” Palo Alto Networks […]
Cybersecurity researchers have shed light on a Rust version of a cross-platform backdoor called SysJoker, which is assessed to have been used by a Hamas-affiliated threat actor to target Israel amid the ongoing war in the region. “Among the most prominent changes is the shift to Rust language, which indicates the malware code was entirely […]
Cybersecurity researchers have discovered a stealthy backdoor named Effluence that’s deployed following the successful exploitation of a recently disclosed security flaw in Atlassian Confluence Data Center and Server. “The malware acts as a persistent backdoor and is not remediated by applying patches to Confluence,” Aon’s Stroz Friedberg Incident Response Services said in an analysis published […]
The Russia-linked hacking crew known as Turla has been observed using an updated version of a known second-stage backdoor referred to as Kazuar. The new findings come from Palo Alto Networks Unit 42, which is tracking the adversary under its constellation-themed moniker Pensive Ursa. “As the code of the upgraded revision of Kazuar reveals, the […]
The backdoor implanted on Cisco devices by exploiting a pair of zero-day flaws in IOS XE software has been modified by the threat actor so as to escape visibility via previous fingerprinting methods. “Investigated network traffic to a compromised device has shown that the threat actor has upgraded the implant to do an extra header […]
The threat actor known as DoNot Team has been linked to the use of a novel .NET-based backdoor called Firebird targeting a handful of victims in Pakistan and Afghanistan. Cybersecurity company Kaspersky, which disclosed the findings in its APT trends report Q3 2023, said the attack chains are also configured to deliver a downloader named […]
Cisco has warned of a new zero-day flaw in IOS XE that has been actively exploited by an unknown threat actor to deploy a malicious Lua-based implant on susceptible devices. Tracked as CVE-2023-20273 (CVSS score: 7.2), the issue relates to a privilege escalation flaw in the web UI feature and is said to have been […]
As part of an ongoing cyber espionage effort, the Iranian nation-state hacking group known as OilRig has continued to target government entities in the Middle East. This cyber espionage campaign makes use of a newly discovered backdoor in order to exfiltrate data. OilRig (APT34) is an Iranian cyberespionage gang that has been active since 2014 […]
Cybersecurity researchers have discovered a previously undocumented advanced backdoor dubbed Deadglyph employed by a threat actor known as Stealth Falcon as part of a cyber espionage campaign. “Deadglyph’s architecture is unusual as it consists of cooperating components – one a native x64 binary, the other a .NET assembly,” ESET said in a new report shared […]
The China-linked threat actor known as Earth Lusca has been observed targeting government entities using a never-before-seen Linux backdoor called SprySOCKS. Earth Lusca was first documented by Trend Micro in January 2022, detailing the adversary’s attacks against public and private sector entities across Asia, Australia, Europe, North America. Active since 2021, the group has relied […]
The Iranian threat actor tracked as APT34 has been linked to a new phishing attack that leads to the deployment of a variant of a backdoor called SideTwist. “APT34 has a high level of attack technology, can design different intrusion methods for different types of targets, and has supply chain attack capability,” NSFOCUS Security Labs […]
Threat actors associated with the hacking crew known as Patchwork have been spotted targeting universities and research organizations in China as part of a recently observed campaign. The activity, according to KnownSec 404 Team, entailed the use of a backdoor codenamed EyeShell. Patchwork, also known by the names Operation Hangover and Zinc Emerson, is suspected […]
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday disclosed details of a “novel persistent backdoor” called SUBMARINE deployed by threat actors in connection with the hack on Barracuda Email Security Gateway (ESG) appliances. “SUBMARINE comprises multiple artifacts — including a SQL trigger, shell scripts, and a loaded library for a Linux daemon — […]
The Russian nation-state actor known as BlueBravo has been observed targeting diplomatic entities throughout Eastern Europe with the goal of delivering a new backdoor called GraphicalProton, exemplifying the continuous evolution of the threat. The phishing campaign is characterized by the use of legitimate internet services (LIS) for command-and-control (C2) obfuscation, Recorded Future said in a […]
The defense sector in Ukraine and Eastern Europe has been targeted by a novel .NET-based backdoor called DeliveryCheck (aka CAPIBAR or GAMEDAY) that’s capable of delivering next-stage payloads. The Microsoft threat intelligence team, in collaboration with the Computer Emergency Response Team of Ukraine (CERT-UA), attributed the attacks to a Russian nation-state actor known as Turla, […]
Rekoobe is a notorious backdoor that primarily targets Linux environments, and it’s actively exploited by the threat actors, mainly a Chinese threat group, APT31. This notorious backdoor was discovered in 2015 for the first time, while an updated version of it resurfaced in 2018 that was exploited by the threat actors in several attacks. AhnLab […]
An unknown cryptocurrency exchange located in Japan was the target of a new attack earlier this month to deploy an Apple macOS backdoor called JokerSpy. Elastic Security Labs, which is monitoring the intrusion set under the name REF9134, said the attack led to the installation of Swiftbelt, a Swift-based enumeration tool inspired by an open-source […]
The threat actor known as ChamelGang has been observed using a previously undocumented implant to backdoor Linux systems, marking a new expansion of the threat actor’s capabilities. The malware, dubbed ChamelDoH by Stairwell, is a C++-based tool for communicating via DNS-over-HTTPS (DoH) tunneling. ChamelGang was first outed by Russian cybersecurity firm Positive Technologies in September […]
Vietnamese public companies have been targeted as part of an ongoing campaign that deploys a novel backdoor called SPECTRALVIPER. “SPECTRALVIPER is a heavily obfuscated, previously undisclosed, x64 backdoor that brings PE loading and injection, file upload and download, file and directory manipulation, and token impersonation capabilities,” Elastic Security Labs said in a Friday report. The […]