GreyNoise has identified a notable surge in scanning activity targeting MOVEit Transfer systems, beginning on May 27, 2025. Prior to this date, scanning was minimal — typically fewer than 10 IPs observed per day.
Join Ido Kringel and the Deep Instinct Threat Research Team in this deep dive into a recently discovered, Office-based regex evasion technique
Microsoft Office-based attacks have long been a favored tactic amongst cybercriminals— and for good reason. Attackers frequently use Office documents in cyberattacks because they are widely trusted. These files, such as Word or Excel docs, are commonly exchanged in business and personal settings. They are also capable of carrying hidden malicious code, embedded macros, and external links that execute code when opened, especially if users are tricked into enabling features like macros.
Moreover, Office documents support advanced techniques like remote template injection, obfuscated macros, and legacy features like Excel 4.0 macros. These allow attackers to bypass antivirus detection and trigger multi-stage payloads such as ransomware or information-stealing malware.
Since Office files are familiar to users and often appear legitimate (e.g., invoices, resumes, or reports), they’re also highly effective tools in phishing and social engineering attacks.
This mixture of social credit and advanced attack characteristics unique to Office files, as well as compatibility across platforms and integration with scripting languages, makes them ideal for initiating sophisticated attacks with minimal user suspicion.
Last year, Microsoft announced the availability of three new functions that use Regular Expressions (regex) to help parse text more easily:
Regex are sequences of characters that define search patterns, primarily used for string matching and manipulation. They enable efficient text processing by allowing complex searches, replacements, and validations based on specific criteria.
Recent incidents indicate US is no longer characterizing Russia as a cybersecurity threat, marking a radical departure: ‘Putin is on the inside now’
In mid-November 2024, Microsoft Threat Intelligence observed the Russian threat actor we track as Star Blizzard sending their typical targets spear-phishing messages, this time offering the supposed opportunity to join a WhatsApp group. This is the first time we have identified a shift in Star Blizzard’s longstanding tactics, techniques, and procedures (TTPs) to leverage a […]
The team at CYFIRMA analyzed a malicious Android sample designed to target high-value assets in Southern Asia. This sample, attributed to an unknown threat actor, was generated using the Spynote Remote Administration Tool. While the specifics of the targeted asset remain confidential, it is likely that such a target would attract the interest of APT groups. However, we are restricted from disclosing further details about the actual target and its specific region. For a comprehensive analysis, please refer to the detailed report
Cado Security Labs details the discovery of a new cross-platform information stealer malware dubbed "Meeten" targeting macOS and Windows users.
iVerify’s Mobile Threat Hunting finds Pegasus spyware is more prevalent and capable of infecting a wide range of devices, not just devices of high-risk users.
Since February 2024, the World Watch Cyber Threat Intelligence team has been working on an extensive study of the private and public relationships within the Chinese cyber offensive ecosystem. This includes:
A notorious hacker named USDoD, who is linked to the National Public Data and InfraGard breaches, has been arrested by Brazil's Polícia Federal in
The two members of Congress called on the Commerce Department to investigate risks related to TP-Link routers amid concerns over state-backed Chinese hacking operations.
Explore the rise of Black Basta as a top ransomware threat, their sophisticated tactics, notable attacks, and future implications for cybersecurity.
FortiGuard Labs discovered the new botnet “Goldoon” targeting D-Link devices through related vulnerability CVE-2015-2051.
The United States and China are locked in a new race, in space and on Earth, over a fundamental resource: time itself.
And the United States is losing.
Global positioning satellites serve as clocks in the sky, and their signals have become fundamental to the global economy — as essential for telecommunications, 911 services and financial exchanges as they are for drivers and lost pedestrians.
Some time ago, we intercepted a dubious ELF sample exhibiting zero detection on VirusTotal. This sample, named pandoraspear and employing a modified UPX shell, has an MD5 signature of 9a1a6d484297a4e5d6249253f216ed69. Our analysis revealed that it hardcoded nine C2 domain names, two of which had lapsed beyond their expiration protection period. We seized this opportunity to register these domains to gauge the botnet's scale. At its peak, we noted approximately 170,000 daily active bots, predominantly in Brazil.employing a modified UPX shell, has an MD5 signature of 9a1a6d484297a4e5d6249253f216ed69. Our analysis revealed that it hardcoded nine C2 domain names, two of which had lapsed beyond their expiration protection
Microsoft Threat Intelligence continues to track and disrupt malicious activity attributed to a Russian state-sponsored actor we track as Star Blizzard, who has improved their detection evasion capabilities since 2022 while remaining focused on email credential theft against targets.
CISA received 4 files for analysis from an incident response engagement conducted at an Aeronautical Sector organization.
2 files (bitmap.exe, wkHPd.exe) are identified as variants of Metasploit (Meterpreter) and designed to connect and receive unencrypted payloads from their respective command and control (C2) servers. Note: Metasploit is an open source penetration testing software; Meterpreter is a Metasploit attack payload that runs an interactive shell. These executables are used as attack payloads to run interactive shells, allowing a malicious actor the ability to control and execute code on a system.
2 files (resource.aspx, ConfigLogin.aspx) are Active Server Pages (ASPX) web shells designed to execute remote JavaScript code on the victim server.
We're sharing a look into our defense strategy and the latest news on how we build it into our products.
A recent study shows that de-platforming hate networks reduces consumption and production of hateful content on Facebook and diminishes the ability of these hate networks to operate online.
We’re sharing new threat research on two of the largest known covert influence operations in the world from China and Russia, targeting 50+ apps and countries, including the US.
We added new transparency features to Threads, including state-controlled media labels to help people know exactly who they interact with on the new app.
Q2 2023 saw an unprecedented escalation in DDoS attack sophistication. Pro-Russian hacktivists REvil, Killnet and Anonymous Sudan joined forces to attack Western sites. Mitel vulnerability exploits surged by a whopping 532%, and attacks on crypto rocketed up by 600%. Read the full story...
The state cybersecurity watchdog issued an official warning and labelled the Chinese application TokTok as a threat, following in the footsteps of the US, the European Commission and Canada.
Last October, Trustwave SpiderLabs blogged about the use and prevalence of HTML email attachments to deliver malware and phishing for credentials.
