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Microsoft on Thursday said it’s once again disabling the ms-appinstaller protocol handler by default following its abuse by multiple threat actors to distribute malware. “The observed threat actor activity abuses the current implementation of the ms-appinstaller protocol handler as an access vector for malware that may lead to ransomware distribution,” the Microsoft Threat Intelligence team […]
Poorly secured Linux SSH servers are being targeted by bad actors to install port scanners and dictionary attack tools with the goal of targeting other vulnerable servers and co-opting them into a network to carry out cryptocurrency mining and distributed denial-of-service (DDoS) attacks. “Threat actors can also choose to install only scanners and sell the […]
The threat actor referred to as Cloud Atlas has been linked to a set of spear-phishing attacks on Russian enterprises. Targets included a Russian agro-industrial enterprise and a state-owned research company, according to a report from F.A.C.C.T., a standalone cybersecurity company formed after Group-IB’s formal exit from Russia earlier this year. Cloud Atlas, active since […]
Indian government entities and the defense sector have been targeted by a phishing campaign that’s engineered to drop Rust-based malware for intelligence gathering. The activity, first detected in October 2023, has been codenamed Operation RusticWeb by enterprise security firm SEQRITE. “New Rust-based payloads and encrypted PowerShell commands have been utilized to exfiltrate confidential documents to […]
A new phishing campaign is leveraging decoy Microsoft Word documents as bait to deliver a backdoor written in the Nim programming language. “Malware written in uncommon programming languages puts the security community at a disadvantage as researchers and reverse engineers’ unfamiliarity can hamper their investigation,” Netskope researchers Ghanashyam Satpathy and Jan Michael Alcantara said. Nim-based […]
The threat actor known as UAC-0099 has been linked to continued attacks aimed at Ukraine, some of which leverage a high-severity flaw in the WinRAR software to deliver a malware strain called LONEPAGE. “The threat actor targets Ukrainian employees working for companies outside of Ukraine,” cybersecurity firm Deep Instinct said in a Thursday analysis. UAC-0099 […]
A new piece of JavaScript malware has been observed attempting to steal users’ online banking account credentials as part of a campaign that has targeted more than 40 financial institutions across the world. The activity cluster, which employs JavaScript web injections, is estimated to have led to at least 50,000 infected user sessions spanning North […]
Attackers are weaponizing an old Microsoft Office vulnerability as part of phishing campaigns to distribute a strain of malware called Agent Tesla. The infection chains leverage decoy Excel documents attached in invoice-themed messages to trick potential targets into opening them and activate the exploitation of CVE-2017-11882 (CVSS score: 7.8), a memory corruption vulnerability in Office’s […]
A new Go-based information stealer malware called JaskaGO has emerged as the latest cross-platform threat to infiltrate both Windows and Apple macOS systems. AT&T Alien Labs, which made the discovery, said the malware is “equipped with an extensive array of commands from its command-and-control (C&C) server.” Artifacts designed for macOS were first observed in July […]
Threat actors are increasingly making use of GitHub for malicious purposes through novel methods, including abusing secret Gists and issuing malicious commands via git commit messages. “Malware authors occasionally place their samples in services like Dropbox, Google Drive, OneDrive, and Discord to host second stage malware and sidestep detection tools,” ReversingLabs researcher Karlo Zanki said […]
The Iranian nation-state actor known as MuddyWater has leveraged a newly discovered command-and-control (C2) framework called MuddyC2Go in its attacks on the telecommunications sector in Egypt, Sudan, and Tanzania. The Symantec Threat Hunter Team, part of Broadcom, is tracking the activity under the name Seedworm, which is also tracked under the monikers Boggy Serpens, Cobalt […]
The developers of the information stealer malware known as Rhadamanthys are actively iterating on its features, broadening its information-gathering capabilities and also incorporating a plugin system to make it more customizable. This approach not only transforms it into a threat capable of delivering “specific distributor needs,” but also makes it more potent, Check Point said […]
A new wave of phishing messages distributing the QakBot malware has been observed, more than three months after a law enforcement effort saw its infrastructure dismantled by infiltrating its command-and-control (C2) network. Microsoft, which made the discovery, described it as a low-volume campaign that began on December 11, 2023, and targeted the hospitality industry. “Targets […]
Cybersecurity researchers have identified a set of 116 malicious packages on the Python Package Index (PyPI) repository that are designed to infect Windows and Linux systems with a custom backdoor. “In some cases, the final payload is a variant of the infamous W4SP Stealer, or a simple clipboard monitor to steal cryptocurrency, or both,” ESET […]
A pro-Hamas threat actor known as Gaza Cyber Gang is targeting Palestinian entities using an updated version of a backdoor dubbed Pierogi. The findings come from SentinelOne, which has given the malware the name Pierogi++ owing to the fact that it’s implemented in the C++ programming language unlike its Delphi- and Pascal-based predecessor. “Recent Gaza […]
The Iranian state-sponsored threat actor known as OilRig deployed three different downloader malware throughout 2022 to maintain persistent access to victim organizations located in Israel. The three new downloaders have been named ODAgent, OilCheck, and OilBooster by Slovak cybersecurity company ESET. The attacks also involved the use of an updated version of a known OilRig […]
Threat actors affiliated with the Russian Foreign Intelligence Service (SVR) have targeted unpatched JetBrains TeamCity servers in widespread attacks since September 2023. The activity has been tied to a nation-state group known as APT29, which is also tracked as BlueBravo, Cloaked Ursa, Cozy Bear, Midnight Blizzard (formerly Nobelium), and The Dukes. It’s notable for the […]
Malware analysis encompasses a broad range of activities, including examining the malware’s network traffic. To be effective at it, it’s crucial to understand the common challenges and how to overcome them. Here are three prevalent issues you may encounter and the tools you’ll need to address them. Decrypting HTTPS traffic Hypertext Transfer Protocol Secure (HTTPS), […]
The Russian nation-state threat actor known as APT28 has been observed making use of lures related to the ongoing Israel-Hamas war to facilitate the delivery of a custom backdoor called HeadLace. IBM X-Force is tracking the adversary under the name ITG05, which is also known as BlueDelta, Fancy Bear, Forest Blizzard (formerly Strontium), FROZENLAKE, Iron […]
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 […]
A new collection of eight process injection techniques, collectively dubbed PoolParty, could be exploited to achieve code execution in Windows systems while evading endpoint detection and response (EDR) systems. SafeBreach researcher Alon Leviev said the methods are “capable of working across all processes without any limitations, making them more flexible than existing process injection techniques.” […]