cyber espionage | Breaking Cybersecurity News | The Hacker News

Unknown attackers spent at least five months inside the Outlook mailbox of a senior executive at a major global stock exchange, copying the inbox out in small, repeated batches and routing it through Dropbox and OneDrive so the traffic blended into normal cloud activity. Symantec and Carbon Black's Threat Hunter Team reported the campaign this week. This points to espionage, not a money grab: Symantec said the commands indicate intelligence collection, not theft for profit. Neither the executive nor the exchange was named. The value is plain enough: an exchange executive's inbox can hold non-public listing details, enforcement matters, deal terms, market-moving plans, plus the executive's calendar and contacts. Five months of quiet access handed the attacker a detailed read on the executive's dealings and where the organization was heading, without needing broad access to other business systems. The first malicious activity showed up on October 10, 2025. By th...

The Russian hacking group known as Gamaredon has been attributed to the continued exploitation of a WinRAR vulnerability to deliver multiple malware families aimed at data theft and propagation. Per Sekoia, the activity involves the weaponization of CVE-2025-8088 , a path traversal flaw in WinRAR, to launch an HTML Application payload dubbed GammaPhish, which is then used to retrieve an intermediate Visual Basic Script (VBScript) downloaders codenamed GammaLoad. The infection chain was observed by the French cybersecurity company in January 2026. "Their primary objectives are to fingerprint the host system, update the network configuration in the registry using dead drop resolvers (DDRs), fetch and execute arbitrary VBScript payloads from the C2 servers," Sekoia said . One of the payloads is a VBScript worm known as GammaWorm that establishes persistence via scheduled tasks and is designed to hide legitimate directories in network shares and USB drives and replace wit...

Cybersecurity researchers have disclosed details of a spear-phishing campaign likely undertaken by the Pakistan-aligned SideCopy group targeting Afghanistan's Ministry of Finance with an open-source remote access trojan called Xeno RAT . "The campaign opens with a spear phishing delivery - a ZIP archive containing a malicious LNK file bearing a carefully crafted Pashto-language filename," Seqrite Labs researcher Dixit Panchal said in a technical breakdown of the activity. Also targeted as part of the campaign are provincial revenue and finance directorates, Pashto-speaking government officials, and provincial-level government employees. The campaign has been codenamed Operation XENOFISCAL. The choice of Pashto for the lure file is a deliberate choice on the part of the attacker, as it's the main language spoken in the Afghan government circles. This aspect reflects the attacker's familiarity with the target environment. SideCopy is the name given to a P...

A new cyber espionage campaign codenamed Operation Dragon Weave has been observed targeting officials and citizens in the Czech Republic and Taiwan to deliver an AdaptixC2 agent. According to Seqrite Labs, targets of the campaign include government, research, academic, technology, and financial services sectors. The activity entails distributing spear-phishing emails containing ZIP attachments to trigger an infection chain that uses a Rust loader to drop the final payload for data exfiltration and remote control. "When extracted, the archive contains multiple files that appear legitimate but are actually part of a structured infection chain designed to execute malicious payloads in the background," security researcher Priya Patel said . The attack chain uses two different pathways to launch the final-stage malware. One infection sequence begins when the recipient of the ZIP archive opens a malicious Windows Shortcut (LNK) file that masquerades as a PDF document. This...

A previously undocumented threat actor dubbed GREYVIBE has been attributed to ongoing and persistent attacks targeting Ukraine and Ukraine-related entities since at least August 2025. GREYVIBE, per WithSecure, is assessed to be a Russian-speaking group operating broadly in the Russian time zone, with the activities aligning with Kremlin state interests, specifically when it comes to intelligence gathering efforts aimed at Ukraine in the context of the ongoing Russo-Ukrainian war. "The group has leveraged multiple attack vectors, including spear-phishing e-mails, fake captcha pages, and fraudulent Ukrainian adult club websites, to deliver malware to a diverse set of victims," WithSecure researcher Mohammad Kazem Hassan Nejad said in an analysis. "Across these campaigns, the group has relied on custom-developed obfuscators, loaders, and malware." The victimology footprint spans military, government, civilian, and business-related organizations. GREYVIBE, its ...