Tag: malware
-
HOLLOWGRAPH malware turns Microsoft 365 calendars into an espionage channel
Microsoft 365 calendars have become a hiding place for espionage malware, with commands and stolen files stashed inside appointments dated to the year 2050, researchers from … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/07/20/hollowgraph-malware-microsoft-365-calendar/
-
New HollowGraph malware uses Microsoft Graph for stealthy C2 comms
A malicious component dubbed HollowGraph uses the calendar feature in compromised Microsoft 365 mailboxes as a command-and-control channel to receive attacker commands and exfiltrate stolen data. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/new-hollowgraph-malware-uses-microsoft-graph-for-stealthy-c2-comms/
-
HollowGraph Malware Hides C2 and Stolen Files in Microsoft 365 Events Dated 2050
A newly discovered espionage implant has been using a hijacked Microsoft 365 calendar as its command channel, planting operator instructions and smuggling out stolen files as attachments on calendar events dated to the year 2050.Group-IB, which named the malware HollowGraph, says the approach moves tasking and stolen data through legitimate Microsoft Graph API traffic, so…
-
âš¡ Weekly Recap: WordPress RCE, SonicWall 0-Days, AI Service Attacks, SharePoint 0-Day and More
Tags: ai, attack, breach, data-breach, malware, rce, remote-code-execution, service, wordpress, zero-dayA single request should not be able to do this much. But this week, small inputs led to code execution, memory loss, stolen keys, and disabled security tools.The paths were often simple: exposed systems, weak checks, old drivers, fake prompts, and public code used for malware delivery. Some bugs were new. Others were already being…
-
New HollowGraph Malware Hijacks Microsoft 365 Calendars for Covert C2 Communications
Researchers have linked HollowGraph malware to the Cavern framework after discovering its use of Microsoft 365 calendars and Microsoft Graph APIs as a stealthy C2 channel First seen on infosecurity-magazine.com Jump to article: www.infosecurity-magazine.com/news/hollowgraph-microsoft-calendars/
-
FBI Arrests Florida Man in $220,000 Steam Crypto Theft Case
FBI agents arrested a Florida man accused of spreading Steam game malware that stole $220,000 in crypto, including $32,000 from a terminally ill cancer patient. First seen on hackread.com Jump to article: hackread.com/fbi-arrests-florida-man-steam-crypto-theft-case/
-
Scams Now Drive Almost Half of All Malware Detections as Attackers Weaponise Everyday Trust
Scams accounted for almost 46% of all threat detections in the first half of 2026, making them the single largest category of malicious activity tracked by Gen Digital, the company behind Norton, Avast, LifeLock and MoneyLion, according to its newly published Threat Report H1 2026. The report, Gen’s first half-yearly threat publication after previously reporting…
-
Researchers Uncover HOLLOWGRAPH: Malware That Hides Inside Microsoft 365 Calendar Invites
A previously undocumented strain of Windows malware is using Microsoft 365 calendar invites as a covert communications channel, allowing attackers to issue commands and exfiltrate stolen files from victim networks while hiding in plain sight among ordinary enterprise traffic, according to new research from the threat intelligence firm Group-IB. The malware, dubbed HOLLOWGRAPH, was detailed…
-
182 Ransomware-Opfer in Deutschland bis Mai 2026 – Infostealer-Malware wird zum Einfallstor für Ransomware
First seen on security-insider.de Jump to article: www.security-insider.de/ransomware-2026-deutschland-opferzahlen-qilin-a-1bdee414e150bd5596d138cb26edb042/
-
North Korean Contagious Interview Campaign Hides OTTERCOOKIE Malware in SVG Images
A sophisticated North Korean threat campaign dubbed “Contagious Interview” has resurfaced with new delivery techniques, leveraging weaponized SVG image files to deploy the OTTERCOOKIE malware while coinciding with a separate supply chain intrusion targeting the Ruby ecosystem. Security researchers tracking DPRK-linked activity note that the campaign continues to impersonate recruiters and job interview workflows, luring…
-
New Russian-speaking threat actor UAT-11795 targets US and Europe with novel malware
First seen on scworld.com Jump to article: www.scworld.com/brief/new-russian-speaking-threat-actor-uat-11795-targets-us-and-europe-with-novel-malware
-
MacOS malware hijacks Telegram sessions, targets crypto wallets
First seen on scworld.com Jump to article: www.scworld.com/brief/macos-malware-hijacks-telegram-sessions-targets-crypto-wallets
-
SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 106
Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter CrashStealer: C++ macOS infostealer posing as crash reporter Lucide Proxy: Turning Student Web Proxies into DDoS Bots AsyncAPI npm organization compromised, 2M weekly downloads affected OkoBot: new sophisticated malware framework targets cryptocurrency users […]…
-
Security Affairs newsletter Round 586 by Pierluigi Paganini INTERNATIONAL EDITION
A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. OpenSSL Fixes HollowByte Memory Exhaustion Bug Daxin: 13-Year-Old China-Linked Malware Found Still Active on Manufacturer’s Network…
-
UAC-0145 Uses ClickFix CAPTCHAs to Infect Ukrainian Devices wih Malware
Russian state-sponsored threat actors have been observed leveraging the infamous ClickFix strategy to trick Ukrainian targets into infecting their own machines with data-stealing malware.According to the Computer Emergency Response Team of Ukraine (CERT-UA), the activity has been attributed to UAC-0145, a sub-cluster within Sandworm, an advanced hacking unit affiliated with GRU, Russia’s First seen on…
-
Daxin: 13-Year-Old China-Linked Malware Found Still Active on Manufacturer’s Network
Researchers found China’s Daxin rootkit and a new Stupig backdoor on a Taiwan firm’s network, suggesting a stealthy intrusion dating back to 2013. Symantec’s Threat Hunter Team found Daxin running on a compromised host at a Taiwan-based subsidiary of a multinational high-tech manufacturer in 2026. Daxin is a Windows kernel-mode rootkit that Symantec first documented…
-
Microsoft warns of surge in ACR Stealer attacks on customers
Microsoft has observed a surge in attacks using the ACR Stealer malware to steal browser-stored passwords, authentication tokens, and sensitive documents from its enterprise customers. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/microsoft-warns-of-surge-in-acr-stealer-attacks-on-customers/
-
ClickLock Mac Malware Traps Users in a Three-Day Password Loop
ClickLock can shut down Mac apps for more than three days while pressuring users to enter a password and stealing sensitive account data in the background. The post ClickLock Mac Malware Traps Users in a Three-Day Password Loop appeared first on TechRepublic. First seen on techrepublic.com Jump to article: www.techrepublic.com/article/news-clicklock-mac-password-malware/
-
CISA Adds FortiSandbox Bugs to KEV Catalog
Agencies Have Until Sunday to Patch Two Critical Command Injection Flaws. CISA added two critical FortiSandbox command injection vulnerabilities to its Known Exploited Vulnerabilities catalog after evidence of active attacks. Experts warn that unauthenticated remote code execution could let attackers compromise malware analysis systems and pivot deeper into enterprise networks. First seen on govinfosecurity.com Jump…
-
FBI arrests man accused of using Steam games to drain victims’ crypto wallets
Prosecutors accused 21-year-old student Zyaire Wilkins of publishing on Steam several fake video games that contained malware, infecting thousands of victims, and stealing crypto from some of them. First seen on techcrunch.com Jump to article: techcrunch.com/2026/07/17/fbi-arrests-man-accused-of-using-steam-games-to-drain-victims-crypto-wallets/
-
“TTF Trap” Phishing Emails Use Fake Font Files to Deliver Windows Malware
An email that appears to contain a shipping document, payment request, or business proposal can infect a Windows… First seen on hackread.com Jump to article: hackread.com/ttf-trap-phishing-fake-font-files-windows-malware/
-
Hackers Hide Lua Loaders in Fake TTF Files to Deploy Remcos, XWorm, and Agent Tesla
Hackers are increasingly abusing trusted file formats and lightweight scripting environments to evade detection, with a newly observed campaign leveraging Lua-based loaders. Disguised as TrueType (.ttf) font files to deploy commodity malware, including Remcos RAT, Agent Tesla, XWorm, and Snake Keylogger variants. The campaign impersonates legitimate businesses and brands in email lures, often using payment-themed…
-
Fake Coding Tests Deliver OtterCookie-Aligned Malware Hidden in SVG Flag Images
North Korean threat actors linked to the Contagious Interview campaign have been observed employing steganography in SVG image files to conceal malicious payloads as part of a campaign using fake job postings and coding challenges.”Any user who ran the project ended up with a four-stage payload aligned with OTTERCOOKIE: a browser credential and crypto wallet…
-
New GoSerpent Malware Targets Southeast Asian Governments and Diplomats for Espionage
Cybersecurity researchers have discovered a previously undocumented malware called GoSerpent that has been put to use in cyber attacks targeting entities in Southeast Asia since late 2025 with a focus on long-term access and intelligence gathering.Russian cybersecurity company Kaspersky, which uncovered the activity in February 2026, said it was aimed at government and diplomatic entities…
-
New Russian Campaign Uses Fake Webex and Zoom Installers to Deploy Starland RAT
Russian-speaking UAT-11795 spreads trojanized Zoom, Webex, and MobaXterm installers to deliver Starland RAT and the WLDR memory-only implant. Cisco Talos researchers published a detailed technical report on July 16 disclosing UAT-11795, a financially motivated, Russian-speaking threat actor that has been running a malware campaign against users in the United States and Europe since at least…
-
Sicherheitslücken in Shims: Secure Boot lässt sich seit über zehn Jahren aushebeln
Tags: malwareForscher haben mehrere seit Jahren angreifbare Shims entdeckt. Angreifer können damit gefährliche Bootkit-Malware an Secure Boot vorbeischmuggeln. First seen on golem.de Jump to article: www.golem.de/news/sicherheitsluecken-in-shims-secure-boot-laesst-sich-seit-ueber-zehn-jahren-aushebeln-2607-210991.html
-
Five-Layer Fileless Malware Uses JScript and PowerShell to Evade AMSI and Load .NET Payload
An active phishing campaign using a five-layer, fileless malware loader to evade Microsoft’s Antimalware Scan Interface (AMSI), static detection controls, and disk-based forensic analysis. The campaign delivers a Windows Script Host JScript payload inside a TAR archive disguised as a purchase order, ultimately loading a .NET assembly directly into memory. The activity was first observed…
-
OkoBot greift Kryptowallets an und tarnt sich als legitime Software
Kaspersky warnt vor einem neuen Malware-Framework, das gezielt auf Kryptowährungsnutzer und Entwickler abzielt. First seen on it-daily.net Jump to article: www.it-daily.net/it-sicherheit/cybercrime/okobot-kryptowallets-an