Clorox on DanSec Daily

Cybersecurity Brief – 2025-09-11

Thu, 11 Sep 2025 00:00:00 +0000

Major Incidents or Breaches

Jaguar Land Rover (JLR) confirmed a data breach following a recent cyberattack that forced system shutdowns and operational disruptions. Some company data was stolen in the incident.
The New York Blood Center began notifying affected individuals about a data breach resulting from a ransomware attack, confirming user data was stolen.
Plex, a media streaming platform, reported a data breach and advised users to reset their passwords.
The largest known supply-chain attack in the NPM ecosystem impacted approximately 10% of all cloud environments. Despite the scale, attackers reportedly gained little financial benefit.
An open-source developer known as “qix” disclosed a compromise of their GitHub account after being socially engineered to surrender access credentials.
A DDoS mitigation service provider in Europe was targeted by a distributed denial-of-service attack peaking at 1.5 billion packets per second.

Newly Discovered Vulnerabilities

Microsoft released patches for 80 vulnerabilities, including a publicly disclosed flaw, an SMB privilege escalation vulnerability, and Azure bugs rated CVSS 10.0.
Fortinet, Ivanti, and Nvidia issued security updates addressing high-severity vulnerabilities that could allow remote code execution, privilege escalation, information disclosure, and configuration tampering.
Rockwell Automation published eight security advisories as part of ICS Patch Tuesday, with additional advisories from Siemens, Schneider Electric, Phoenix Contact, and CISA.
A weakness in the Cursor AI code editor was identified, allowing repositories to automatically execute malicious code on a developer’s device when opened.

Notable Threat Actor Activity

Chinese APT groups have been linked to multiple high-profile incidents:
- A Chinese APT deployed the previously undocumented EggStreme fileless malware framework to compromise a Philippines-based military company.
- APT41, a China-linked group, is conducting ongoing cyber espionage campaigns targeting U.S. trade officials amid 2025 negotiations, as formally warned by the U.S. House Select Committee on China.
- Chinese state-backed actors have been observed posing as a U.S. congressman in spear-phishing attacks.
AsyncRAT is being distributed via compromised ConnectWise ScreenConnect installations to steal credentials and cryptocurrency.
Hacktivist and APT groups targeting Russian organizations have been analyzed and classified into three clusters based on their tactics, techniques, and procedures (TTPs).
The U.S. announced a $10 million reward for information leading to the arrest of Volodymyr Tymoshchuk, accused of deploying LockerGoga, MegaCortex, and Nefilim ransomware against hundreds of organizations.

Trends, Tools, or Tactics of Interest

The use of “shadow AI”-unauthorized or unmanaged AI tools by employees-is highlighted as an increasing security risk for organizations.
A new Phishing-as-a-Service kit, Salty2FA, has emerged, targeting U.S. and EU enterprises and focusing on bypassing two-factor authentication.
Two new malware families were identified:
- CHILLYHELL, a modular macOS backdoor with multiple persistence mechanisms, password brute-forcing, payload dropping, and multi-protocol communication.
- ZynorRAT, a Go-based remote access trojan capable of targeting macOS, Windows, and Linux systems.
BASE64 encoding over DNS is being used as a data exfiltration technique by certain backdoors.
Google is implementing C2PA Content Credentials in the Pixel 10 camera and Google Photos to verify image authenticity and counter AI-generated fakes.
Students are increasingly posing insider threats within the education sector, often unintentionally but at a scale challenging for security teams.
Social engineering remains a significant vector, as demonstrated by the Scattered Spider group breaching Clorox through phone-based help desk manipulation, leading to $380 million in damages.

Regulatory or Policy Developments Affecting the Security Industry

CISA presented its vision for the Common Vulnerabilities and Exposures (CVE) program, indicating ongoing evolution in vulnerability management and disclosure processes.
Apple introduced Memory Integrity Enforcement (MIE) in new iPhone models, providing always-on memory safety protections for the kernel and over 70 userland processes.
The U.S. is increasing scrutiny and financial incentives related to ransomware operators, exemplified by the $10 million reward targeting a Ukrainian ransomware actor.
The number of U.S. investors in commercial spyware companies increased sharply in 2024, with new countries identified as linked to the proliferation of such tools.

Cybersecurity Brief – 2025-07-25

Fri, 25 Jul 2025 00:00:00 +0000

Major Incidents or Breaches

Law enforcement has seized the dark web extortion sites of the BlackSuit ransomware operation, which has breached hundreds of organizations globally.
Toptal’s GitHub organization account was compromised, with attackers publishing ten malicious npm packages to the npm registry.
Security flaws in Airportr, a luggage service used by 10 airlines, exposed user data and allowed attackers to potentially redirect or steal luggage.
A threat actor named EncryptHub compromised an early access Steam game to distribute info-stealing malware to users.
CastleLoader malware has infected 469 devices by leveraging fake GitHub repositories and phishing techniques (ClickFix) to deliver info-stealers and remote access trojans.
Multiple npm developer accounts were compromised in a phishing campaign, resulting in malware being injected into popular npm packages.

Newly Discovered Vulnerabilities

Microsoft SharePoint: Five vulnerabilities collectively known as ToolShell were detailed, including a POST request exploit that can bypass initial patches. Over 400 SharePoint servers, including US government systems, have been targeted.
Mitel MiVoice MX-ONE: A critical authentication bypass vulnerability has been disclosed and patched, allowing attackers to gain full access to affected systems.
Sophos Firewall and SonicWall SMA 100 Series: Critical remote code execution vulnerabilities have been patched. SonicWall specifically urges immediate updates due to recent malware attacks exploiting these flaws.
Airportr: Web security bugs exposed sensitive user data and allowed privilege escalation.
AI-generated image watermarks have been found to be easily removable, undermining some anti-misinformation controls.

Notable Threat Actor Activity

Storm-2603, a China-based threat actor, is actively exploiting SharePoint ToolShell vulnerabilities to deploy Warlock ransomware in ongoing campaigns.
Fire Ant, a threat actor, is targeting VMware ESXi hosts and vCenter environments in a prolonged cyber espionage campaign.
China-nexus APTs have deployed fake Dalai Lama apps to spy on the Tibetan community in multi-stage attacks.
BlackSuit ransomware infrastructure was disrupted by law enforcement following a global campaign of breaches.
High-value npm developer accounts have been targeted in phishing campaigns to distribute malicious packages.
Koske, a new Linux malware, is using steganography-hiding malicious payloads in panda JPEG images-and may have been developed with AI.

Trends, Tools, or Tactics of Interest

Ransomware groups are increasingly exploiting SharePoint ToolShell vulnerabilities, with a focus on unpatched systems.
CastleLoader demonstrates the use of fake GitHub repositories and phishing as initial infection vectors for malware distribution.
New malware delivery methods include steganography (Koske) and compromised software supply chains (npm, Steam games).
The evilreplay tool enables real-time browser session hijacking via XSS without the need for cookie theft, providing interactive post-exploitation control.
Offensive security is shifting towards continuous, proactive testing rather than annual penetration tests.
Law enforcement actions are increasing against cybercrime forums (e.g., XSS) and ransomware operations.

Regulatory or Policy Developments Affecting the Security Industry

The UK has implemented mandatory age verification for adult content access, raising privacy and security concerns about the collection and management of personal data.
New York is seeking public input on proposed cyber regulations for water systems, including incident reporting, response plans, and compliance certification.
Clorox has filed a $380 million lawsuit against Cognizant over a 2023 hack, alleging that IT provider actions enabled the breach.

Cybersecurity Brief – 2025-07-24

Thu, 24 Jul 2025 00:00:00 +0000

Major Incidents or Breaches

The US National Nuclear Security Administration was breached via exploitation of a Microsoft SharePoint zero-day vulnerability chain. At least three Chinese nation-state cyber-espionage groups are implicated in targeting older, on-premises SharePoint instances after a flawed patch attempt.
Clorox has filed a $380M lawsuit against Cognizant, alleging gross negligence after hackers successfully impersonated an employee and convinced the help desk to reset credentials, enabling a major August 2023 cyberattack.
Ongoing phishing campaigns are mimicking the US Department of Education’s G5 grant portal, exploiting recent layoffs and political turmoil to target users.
The npm package ‘is’, with 2.8 million weekly downloads, was compromised in a supply chain attack, injecting backdoor malware that gave attackers full device access.
npm accidentally removed the Stylus package, breaking builds and pipelines globally that depend on the library.
Ukraine arrested the suspected administrator of the Russian-language cybercrime forum XSS.is at the request of French authorities.

Newly Discovered Vulnerabilities

Sophos patched five critical vulnerabilities in Sophos Firewall that allowed for remote code execution by unauthenticated attackers.
CISA issued an alert regarding active exploitation of two vulnerabilities in SysAid ITSM software, which attackers are using to hijack administrator accounts.
Cisco reported active exploitation attempts of critical Cisco Identity Services Engine (ISE) vulnerabilities, which could lead to unauthenticated remote code execution.
Multiple high-severity memory safety vulnerabilities were patched in both Chrome and Firefox browsers.
Persistent exploitation of known Ivanti remote code execution vulnerabilities continues, particularly affecting Japanese organizations due to patching complications.

Notable Threat Actor Activity

Threat actor “Mimo” has shifted tactics to target Magento CMS and misconfigured Docker instances for crypto mining and proxyware deployment, expanding from previous campaigns against Craft CMS.
Chinese threat actors continue to exploit Ivanti RCE vulnerabilities in targeted attacks.
The Lumma Stealer malware re-emerged and resumed activity after a prior law enforcement takedown.
The Interlock ransomware group is actively targeting organizations through drive-by download attacks, prompting a government alert.
Hackers are using stolen credit cards and loyalty points to book travel for clients, with risks extending to remote workers, SMBs, and travel brands.

Trends, Tools, or Tactics of Interest

Researchers identified a new stealthy WordPress backdoor hidden in the “mu-plugins” directory, enabling persistent administrative access and evading standard detection.
The Coyote banking trojan is the first known malware to abuse the Windows UI Automation (UIA) accessibility framework to steal banking credentials, with attacks observed against banks and crypto exchanges in Brazil.
Kerberoasting attacks remain effective due to weaknesses in current detection methods; new approaches to detection and Active Directory hardening are being discussed.
Increased exploitation of SharePoint vulnerabilities is observed, with multiple exploit attempts and scanning activity detected shortly after public disclosure.
File integrity monitoring receives renewed focus with the release of the ficheck.py tool for forensic analysis.
Google launched the OSS Rebuild initiative to enhance security in open-source package ecosystems and address software supply chain attack risks.
Brave browser implemented a feature to block Windows Recall from capturing screenshots of browser activity by default.
Proton launched “Lumo,” a privacy-focused encrypted AI assistant that does not log user conversations or use prompts for training.
OpenAI is rolling out new ChatGPT features, including “personality” toggles and a “Study together” mode for exam preparation.
AI bot traffic is increasingly impacting website performance, with new mitigation strategies under discussion.
OpenAI CEO Sam Altman warned of the rising threat of AI voice fraud in banking, stating that voice clones are becoming indistinguishable from real voices and require new verification methods.

Regulatory or Policy Developments

The UK is considering a ban on ransomware payments, with debate over potential unintended consequences such as victims hiding incidents or attackers shifting tactics.
ISO 42001, a new international standard for AI governance, is being highlighted as a framework for responsible AI development and deployment.