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Daily Edition · Page 5

THE DAILY INDEX

Technology, AI, software, security, crypto and business

ATTACKS & VULNERABILITIES

TLDR InfoSec

TLDR InfoSec

MICROSOFT UNCOVERS NEW VARIANT OF XCSSET MACOS MALWARE IN TARGETED ATTACKS

Microsoft has discovered a new XCSSET macOS malware variant being used in targeted attacks. It builds on the 2020 threat with advanced features, including stealing Firefox credentials via a modified HackBrowserData, hijacking cryptocurrency clipboard addresses using regular expressions, and increasing persistence through LaunchDaemon entries with AppleScripts and AES-encrypted C2 configurations. The four-stage infection chain uses modular payloads for info theft (vexyeqj/bnk), file exfiltration (neq_cdyd_ilvcmwx), persistence (xmyyeqjx creates fake System Settings apps and disables updates), and browser data extraction (iewmilh_cdyd targets passwords, cookies, and credit cards in Firefox). Security teams should review Xcode projects before use, deploy Microsoft Defender on macOS with cloud protection and PUA blocking, verify clipboard content before pasting sensitive information, and monitor for malicious LaunchDaemon entries (e.g., com.google.plists) and unusual creation of the ~/.root folder.

securityaffairs.com · 3 min

TLDR InfoSec

APT35 PLAYS THE SAME MUSIC AGAIN

Stormshield's CTI team discovered two previously unreported servers (84.200.193[.]20 and 79.132.131[.]184) linked to Iranian APT35 (Charming Kitten) by hunting for a distinctive HTML loading page pattern using ssdeep fuzzy hashing and queries in SilentPush and VirusTotal. The servers, active since July, host 49+ phishing domains impersonating video conferencing services, such as Google Meet, with typosquatting tactics (e.g., meet.go0gle[.]online), primarily targeting Israeli victims based on URL submission patterns. Defenders can track ongoing APT35 infrastructure using simple VirusTotal queries, such as "entity:url url:online/?invitation" or "entity:domain domain:viliam.*", to identify phishing domains that follow consistent naming conventions despite the campaign being publicly documented.

stormshield.com · 3 min

TLDR InfoSec

SILENT PUSH EXAMINES THE DARK SIDE OF DYNAMIC DNS PROVIDERS

Silent Push identified around 70,000 domains offering rentable subdomains (Dynamic DNS providers) exploited by threat actors due to minimal oversight, cryptocurrency payments, no KYC, and ignoring takedown requests. Major APT groups like APT28, APT29, APT33, Gamaredon, and Scattered Spider extensively use these for C2 infrastructure. While individual malicious subdomains can be blocklisted, parent domains often remain active and spawn new threats. The team created data exports (from the Public Suffix List, afraid[.]org, DuckDNS, NoIP) to help security teams implement risk-based blocking or alerting, balancing security with avoiding disruption to legitimate access.

silentpush.com · 8 min

TLDR InfoSec

BUILDING AN AWS GUARDDUTY ALERT TRIAGE AGENT

This article explores how to create a GuardDuty triage agent using PydanticAI and Discord. A user can call the agent using !triage in a Discord channel, and it will investigate a specific alert, IAM user, etc, and provide additional context as well as a verdict. The author was impressed with how well the LLM could triage alerts, but definitely felt that there was a lot of engineering effort in creating the tools and fine-tuning the agent.

dev.to · 8 min

TLDR InfoSec

HARDENING GOOGLE CLOUD: INSIGHTS FROM THE LATEST CLOUD VRP BUGSWAT

Google Cloud's record-breaking bugSWAT event brought together 20 elite security researchers who submitted 130 reports, uncovering 91 vulnerabilities across the platform. The event resulted in approximately $1.6 million in bounty rewards (with 100% bonuses applied), pushing Google's total Cloud VRP payouts to ~$2.5M for 2025. High-severity findings included a network egress filter bypass that enabled SSRF attacks and SQL injection vulnerabilities in database connectors, both of which have now been patched.

bughunters.google.com · 5 min

TLDR InfoSec

DOD ISSUES REPLACEMENT FOR RISK MANAGEMENT FRAMEWORK

The Department of Defense (DoD) unveiled a new Cybersecurity Risk Management Construct to replace its previous risk management system. The new system defines a five-phased lifecycle which includes: a design phase which incorporates security from the outset, a build phase where secure designs are implemented to achieve Initial Operating Capacity, a test phase where validation and stress testing are performed before Full Operating Capacity, an onboarding phase where automated continuous monitoring is activated, and finally an operations phase where real-time dashboards and alerting mechanisms provide immediate detection and response.

breakingdefense.com · 3 min

TLDR InfoSec

MICROSOFT FORCED TO MAKE WINDOWS 10 EXTENDED SECURITY UPDATES TRULY FREE IN EUROPE

Windows 10 will reach end-of-life on October 14. Microsoft had previously announced that users who enabled Windows Backup would be entitled to a year of free extended security updates. This move drew some controversy due to its requiring the use of OneDrive to receive security updates. Following pressure from the Euroconsumers consumer advocacy group, Microsoft has dropped the Windows Backup requirement for European users, but will still require the use of a Microsoft account.

theverge.com · 2 min

TLDR IndexPage 5