UAC-0099 on DanSec Daily

Cybersecurity Brief – 2026-10-09

Fri, 09 Oct 2026 00:00:00 +0000

Major Incidents or Breaches

ASOS confirmed that hackers stole customer personal details and shopping search histories, increasing the risk of targeted phishing attacks against affected customers ^[44].
IDC Frontier disclosed a ransomware attack that disrupted its IDCF Cloud service, causing outages at a data center cluster serving government clients in Japan ^[23].
Japanese organizations have experienced a sharp rise in personal data leaks, with attackers abusing mobile app APIs and exploiting known software vulnerabilities ^[14].
Hackers hijacked the .gh, .sl, and .as country-code top-level domains (ccTLDs), obtaining HTTPS certificates for Google domains and enabling impersonation of trusted services ^[35]^[45].
Over 17,000 malicious repositories were created on GitHub as part of the revived FakeGit malware campaign, distributing SmartLoader and StealC infostealer ^[25].
A Ukrainian-Russian dual citizen pleaded guilty to operating a network of 15,000 money mules, laundering millions for cybercriminals worldwide ^[18].
Low-cost Android phones in over 150 countries were found shipping with preinstalled residential proxy malware, dubbed ‘Midnight Mimosa’, enabling attackers to silently install apps and abuse devices as proxies ^[24]^[37].

Newly Discovered Vulnerabilities

A pre-authentication remote code execution flaw in AnyDesk for Linux was publicly disclosed, along with a working exploit that grants attackers root access without user approval ^[3].
Two critical vulnerabilities (CVE-2026-105133 and CVE-2026-105134) in AhsayCBS backup utility are being exploited to bypass authentication and inject OS commands, allowing attackers to deploy web shells and XMRig cryptocurrency miners ^[5]^[36].
Cisco released advisories for five critical vulnerabilities in its Nexus NX-OS data center network operating system, which could allow attackers to run arbitrary code with root privileges and take over affected switches ^[26]^[43].
Citrix patched a critical NetScaler ADC and Gateway vulnerability (CVE-2026-107406) that could enable remote code execution or denial-of-service in SAML deployments, urging immediate patching ^[10]^[20]^[40].
A maximum-severity vulnerability (CVE-2026-102255) in SonicWall SMA1000 appliances is now being exploited in the wild; the flaw was patched three days prior to reports of active exploitation ^[17].
A bug in GoBalance, used by dark-web sites, allows attackers to recover the secret key controlling a site’s .onion address using public information, enabling .onion address hijacking ^[8].
A now-patched vulnerability in AWS Bedrock AgentCore could have allowed a single AI chatbot prompt to compromise an entire AWS environment ^[28].

Notable Threat Actor Activity

The FBI and US Department of Justice announced the seizure of seven domains and disruption of MicroScan and FishHub tools used by the China-linked APT group Flax Typhoon, which targeted US and foreign critical infrastructure ^[11]^[22]^[38].
Flax Typhoon was observed exploiting five security flaws, leading CISA to add them to its Known Exploited Vulnerabilities catalog and set an October 11 remediation deadline for federal agencies ^[6].
China-linked hackers operated a portal granting third parties access to stolen emails from government, law enforcement, healthcare, and religious organizations in Southeast Asia ^[12].
The Russia-aligned threat actor UAC-0099 has been attributed to a new .NET infostealer and remote access trojan, ASHVEIN, targeting Ukrainian government personnel and hiding commands in HTML ^[15]^[30].
Ransomware affiliate conflict was reported, with an affiliate keeping all profits for themselves, and an attacker left a server exposed with intrusion tools and traces ^[13].
The leader of a malware operation supporting the Venezuelan cartel Tren de Aragua was arrested for ATM jackpotting, marking the first cybercriminal on the FBI’s “10 Most Wanted Fugitives” list ^[29].

Trends, Tools, or Tactics of Interest

Pwn2Own Ireland 2026 concluded with researchers demonstrating 98 zero-day exploits, including remote compromises of fully patched Google Pixel 10 devices; $1.26 million in rewards were paid ^[9]^[21]^[41].
Attackers are increasingly abusing APIs and targeting known software vulnerabilities to facilitate large-scale data breaches, as observed in recent incidents in Japan ^[14].
The FakeGit campaign’s return with tens of thousands of malicious GitHub repositories highlights the ongoing risk of supply chain attacks via open-source platforms ^[25].
AI agents are being manipulated in business email compromise-style attacks, with reports of social engineering targeting AI-driven business systems ^[27].
AI agent security is challenged by the risk of agents exceeding their permissions, as traditional access controls may not prevent credential misuse ^[16].
New forensic scripts and methodologies for reconstructing AI agent activity are being developed for incident response, reflecting a growing focus on AI-related investigations ^[33].
The ‘AgentCorruption’ vulnerability in AWS Bedrock demonstrates the risks of prompt injection attacks against AI orchestration platforms ^[28].
Budget Android devices continue to be a vector for large-scale malware distribution through preinstalled firmware-level threats ^[24]^[37].

Regulatory or Policy Developments Affecting the Security Industry

Four additional US states (Florida, Iowa, Montana, Nebraska) filed lawsuits against TP-Link over router security concerns and alleged ties to China, joining Texas in ongoing litigation ^[2].
Microsoft announced that devices running unsupported Windows versions will stop receiving security updates after next year’s Windows Update certificate rotation ^[19].
The US Cybersecurity and Infrastructure Security Agency (CISA) set an October 11 deadline for federal agencies to remediate five newly listed exploited vulnerabilities ^[6].

Tools and Security Solutions

Anthropic launched OSS Scanner, an AI-powered, opt-in vulnerability scanner for open-source projects, which sends unreviewed model-generated bug reports directly to maintainers ^[4]^[39].

Sources

ASOS breach update: Hackers stole customer details and shopping searches - malwarebytes.com
Ransomware attack disrupts Japan's IDCF Cloud used by govt clients - bleepingcomputer.com
Japan Sees Sharp Rise in Web Data Leaks Amid Mobile API Abuse and Metabase Attacks - thehackernews.com
Google Domains Impacted by Recent ccTLD Hijacks - securityweek.com
Attackers hijack country-code domains to impersonate Google and other services - malwarebytes.com
FakeGit malware campaign returns with 17,610 malicious GitHub repos - bleepingcomputer.com
Man admits to running network of 15,000 money mules for cybercriminals - bleepingcomputer.com
Low-cost Android phones ship with residential proxy malware - bleepingcomputer.com
Pre-Baked Firmware Malware Hits Budget Android Devices in 150+ Countries - securityweek.com
Researchers Publish Working Exploit for Pre-Auth AnyDesk Linux Flaw That Gives Root Access - thehackernews.com
Attackers Exploit AhsayCBS Flaws to Deploy XMRig Miners Disguised as Microsoft Edge - thehackernews.com
Unpatched AhsayCBS Vulnerabilities Exploited in the Wild - securityweek.com
Cisco warns of critical flaws allowing Nexus switch takeover - bleepingcomputer.com
Cisco Patches a Dozen Critical Vulnerabilities - securityweek.com
Citrix Patches Critical NetScaler Flaw That Could Enable RCE in SAML Deployments - thehackernews.com
Citrix warns admins to patch new NetScaler RCE flaw immediately - bleepingcomputer.com
Citrix Urges Immediate Patching of Critical NetScaler Vulnerability - securityweek.com
Max severity SonicWall SMA1000 flaw now exploited in attacks - bleepingcomputer.com
GoBalance Flaw Lets Attackers Hijack .onion Addresses by Recovering Tor-Format Keys - thehackernews.com
'AgentCorruption' Puts AWS Environments At Risk With Single Prompt - darkreading.com
FBI Seizes 7 Domains, Disrupts Flax Typhoon Tools Used in Critical Infrastructure Intrusions - thehackernews.com
FBI disrupts Chinese hacking tools used to breach critical infrastructure - bleepingcomputer.com
US Disrupts Chinese State-Sponsored Hacking Tools - securityweek.com
Flax Typhoon Exploits Five Flaws as CISA Sets October 11 Deadline for Federal Agencies - thehackernews.com
FBI Says China-Linked Hackers Ran Portal Giving Third Parties Access to Stolen Emails - thehackernews.com
UAC-0099 Targets Ukrainian Government Personnel With ASHVEIN RAT Hiding Commands in HTML - thehackernews.com
Russian Spies Give 'MatchBoil' Malware a Stealthy Facelift - darkreading.com
ThreatsDay: Ransomware Affiliate Betrayal, WhatsApp RAT, Exposed Hacker Tools and 12 More Stories - thehackernews.com
Venezuelan Cartel's Malware Honcho Nabbed for ATM Jackpotting - darkreading.com
Three Teams Demonstrate Remote Hacks of Fully Patched Google Pixel 10 at Pwn2Own - thehackernews.com
Hackers get $1,262,000 for 98 zero-days at Pwn2Own Ireland - bleepingcomputer.com
Google Pixel 10 Exploits Earned Hackers $560,000 at Pwn2Own - securityweek.com
Social Engineering AI Agents: The New BEC for 2026 - darkreading.com
How to keep AI agents within their permissions - bleepingcomputer.com
Reconstructing AI Agent Activity: Two New Scripts for Forensic Review, (Thu, Oct 8th) - isc.sans.edu
TP-Link Sued by Four More U.S. States Over Router Security and China Ties - thehackernews.com
Microsoft: Outdated Windows devices will stop receiving security updates - bleepingcomputer.com
Anthropic Launches Free AI Vulnerability Scanner for Open-Source Projects - thehackernews.com
Anthropic Fast-Tracks AI Bug Reports to OSS Maintainers, Taps 11 Firms for OT Security - securityweek.com

Cybersecurity Brief – 2026-09-01

Tue, 01 Sep 2026 00:00:00 +0000

Major Incidents or Breaches

Berlin’s city administration confirmed data theft following a Rhysida ransomware attack, with cybercriminals attempting extortion after listing the city on a data leak site ^[18].
Hackers stole personal and health information affecting 9.5 million individuals from Aesto Health’s AWS infrastructure ^[33].
McKesson, a healthcare company, acknowledged a data breach after ShinyHunters claimed to have stolen hundreds of millions of records ^[42].
Nutex Health notified the SEC of a ransomware attack that compromised patient, employee, provider, business, and financial data ^[31].
Anthropic users were impacted by infostealer attacks, with session cookies stolen to gain access to Claude AI accounts and consume usage ^[19]^[41].
METR, an AI evaluation non-profit, suffered the theft of an API key, leading to the consumption of approximately $600,000 in AI credits ^[4].
Five Venezuelan nationals pleaded guilty in the US to ATM jackpotting attacks that involved attempting to physically install malware on ATMs to dispense cash ^[10]^[30].
The Cronos blockchain network was restarted after a price-manipulation exploit on the Tectonic lending platform enabled the theft of $74 million ^[12].

Newly Discovered Vulnerabilities

Nearly 22,000 Microsoft Exchange servers remain unpatched and exposed to a high-severity authentication bypass vulnerability, allowing attackers to hijack user mailboxes ^[9].
Two critical vulnerabilities in PaperCut NG and MF print management software (CVE-2026-82078 and CVE-2026-81578) are being actively exploited in data theft attacks; CISA has added these to its Known Exploited Vulnerabilities (KEV) catalog ^[11]^[35].
A critical authentication bypass vulnerability in JFrog Artifactory (CVE-2026-82329) is being exploited in the wild just days after disclosure ^[32].
WatchGuard patched three critical vulnerabilities in its Fireware OS iked process that could allow unauthenticated remote code execution ^[34].
ServiceNow patched three critical code injection vulnerabilities that could allow attackers to execute arbitrary code and access or tamper with data ^[37].
A critical flaw in Langflow (CVE-2026-0768) is under active exploitation, allowing unauthenticated remote execution of arbitrary Python code ^[6]^[29].
Kaspersky patched a vulnerability in its Endpoint Security product exploited by the Nightmare Eclipse group using the ‘HardBreacher’ technique ^[36].
Critical vulnerabilities in Ruby on Rails are being exploited for credential-probing and command and control activity ^[6].
JSCeal, a stealer targeting cryptocurrency applications, is delivered as compiled V8 bytecode and executed by a bundled Node.js runtime ^[38].

Notable Threat Actor Activity

Mirage Kitten, an Iran-linked threat actor, is targeting aviation and FinTech sectors across the Middle East and Africa with new malware families NodeRabbit (Node.js) and PollCat (JavaScript) ^[1].
The Russia-aligned UAC-0099 group is using a new technique, GuardBreaker, to plant nuclear weapon prompts in malware aimed at disrupting AI analysis in Ukraine ^[5].
North Korean threat actors are expanding job fraud operations beyond IT into healthcare and sales, seeking illicit employment in new sectors ^[7].
The Chinese Fire Ant group is using Cisco routers as spying platforms by establishing unauthorized GRE tunnel interfaces ^[16].
Rhysida ransomware is actively extorting the city of Berlin following a successful attack ^[18].
The Nightmare Eclipse group is exploiting a Kaspersky Endpoint Security vulnerability with a tool called ‘HardBreacher’ ^[36].

Trends, Tools, or Tactics of Interest

Abuse of enterprise collaboration tools by threat actors has increased fourfold in the past year as attackers use these platforms to evade detection ^[2].
The TerminalFix campaign, a variant of ClickFix, uses fake Cloudflare CAPTCHA prompts to trick users into executing malicious PowerShell commands, establishing reverse tunnels for deeper network access ^[13]^[20]^[40].
Infostealers are being used to hijack AI service accounts such as Anthropic’s Claude by stealing session cookies, enabling unauthorized access and usage ^[19]^[41].
Attackers are exploiting critical vulnerabilities in Langflow and Rails for credential harvesting and establishing command and control channels ^[6]^[29].
A router backdoor was observed where devices shipped with remote access enabled, allowing attackers to collect traffic and credentials and then erase logs ^[8].
Researchers demonstrated that AI models, such as Claude, can be used to port PLC exploits between device models quickly, reducing the barrier for industrial exploit development ^[28].
Job fraud tactics by North Korean actors are diversifying to include healthcare and sales roles ^[7].
JSCeal stealer is delivered in compiled V8 bytecode format and executed by a bundled Node.js runtime, targeting cryptocurrency users ^[38].

Regulatory or Policy Developments Affecting the Security Industry

CISA added the actively exploited PaperCut vulnerabilities (CVE-2026-82078 and CVE-2026-81578) to its Known Exploited Vulnerabilities catalog, signaling increased urgency for patching ^[35].
Nutex Health disclosed its ransomware breach to the SEC, reflecting regulatory requirements for timely breach notification ^[31].

Sources

Berlin confirms data theft after Rhysida ransomware attack claims - bleepingcomputer.com
9.5 Million Impacted by Aesto Health Data Breach - securityweek.com
McKesson confirms cyber incident after ShinyHunters claims patient-data theft - malwarebytes.com
Ransomware Gang Claims Nutex Health Data Breach - securityweek.com
Anthropic Users Hit by Infostealer Attacks, Session Thefts - darkreading.com
Infostealers are hijacking Claude accounts at users’ expense - malwarebytes.com
Attackers Steal METR API Key and Consume AI Credits Worth About $600,000 - thehackernews.com
Five Venezuelans plead guilty to ATM jackpotting attacks in US - bleepingcomputer.com
Five Venezuelans Plead Guilty in US Court to ATM Jackpotting - securityweek.com
Cronos blockchain restarts after $74 million Tectonic exploit - bleepingcomputer.com
Nearly 22,000 Microsoft Exchange servers vulnerable to hijack attacks - bleepingcomputer.com
Recently patched PaperCut zero-days used in data theft attacks - bleepingcomputer.com
PaperCut Exploitation Escalates to Active Intrusions - securityweek.com
Critical JFrog Artifactory Vulnerability Reportedly Exploited in the Wild - securityweek.com
WatchGuard Patches Critical Vulnerabilities - securityweek.com
ServiceNow Patches 3 Critical Code Injection Vulnerabilities - securityweek.com
Attackers Exploit Critical Langflow and Rails Flaws in Credential-Probing and C2 Activity - thehackernews.com
Hackers Start Exploiting Critical Langflow Vulnerability - securityweek.com
Nightmare Eclipse Drops ‘HardBreacher’ Kaspersky Product Exploit - securityweek.com
Breaking the Seal: Static Deobfuscation of JSCeal’s Compiled V8 Bytecode - research.checkpoint.com
Mirage Kitten targeting aviation and FinTech sectors across the Middle East and Africa with a new malware set - securelist.com
Russia-Aligned UAC-0099 Plants Nuclear Weapon Prompt in Malware to Disrupt AI Analysis - thehackernews.com
North Korean Job Fraud Expands Beyond IT Into Healthcare and Sales - thehackernews.com
Chinese Fire Ant hackers turn Cisco routers into spying platforms - bleepingcomputer.com
Attackers Abuse Enterprise Collaboration Tools to Avoid Detection - blog.knowbe4.com
Microsoft warns of TerminalFix attacks deploying reverse tunnels - bleepingcomputer.com
'TerminalFix' Campaign Weaponizes PowerShell for Enterprise Attacks - darkreading.com
TerminalFix looks like ClickFix, but delivers a very different payload - malwarebytes.com
⚡ Weekly Recap: Chinese Spy Proxy, AI Agents Go Off-Task, Router Backdoors and More - thehackernews.com
Experiment: Porting a PLC Exploit With AI Takes Hours and Hundreds of Dollars - securityweek.com

Cybersecurity Brief – 2025-08-07

Thu, 07 Aug 2025 00:00:00 +0000

Major Incidents or Breaches

Google has suffered a data breach as part of an ongoing campaign targeting Salesforce CRM data, attributed to the ShinyHunters extortion group. Several major companies have been impacted by this wave of attacks.
DaVita has notified over 1 million individuals that their personal and health information was stolen in a ransomware attack.
WhatsApp has taken down 6.8 million accounts linked to criminal scam centres, with Meta attributing the activity to a scam centre in Cambodia.
A hacker, Chukwuemeka Victor Amachukwu, has been extradited from France to the US for spearphishing attacks on US tax preparers, resulting in the theft of $3.3 million from taxpayers.

Newly Discovered Vulnerabilities

Trend Micro has confirmed active exploitation of critical security flaws (including zero-days) in on-premise Apex One Management Console, with mitigations released. The vulnerabilities have reportedly been exploited by Chinese threat actors.
Researchers have uncovered multiple vulnerabilities in Dell’s ControlVault3 firmware (ReVault flaws), impacting over 100 laptop models. These flaws allow attackers to bypass Windows login and install persistent malware.
Amazon ECS is affected by a newly discovered “ECScape” flaw, enabling cross-task credential theft and lateral movement within container environments.
CyberArk Conjur contained multiple vulnerabilities that could be chained for unauthenticated remote code execution. Patches have been issued.
CISA has issued an alert regarding a vulnerability affecting Microsoft Exchange.
Security researchers have demonstrated that a single malicious document can exploit weaknesses in OpenAI’s Connectors to extract data from Google Drive without user interaction.
Multiple reports from Black Hat USA and DEFCON 2025 highlight that HTTP request smuggling vulnerabilities (notably in HTTP/1.1) remain prevalent and are evolving, with many defences proving inadequate.

Notable Threat Actor Activity

The ShinyHunters group is behind the recent wave of Salesforce data theft attacks, including the breach at Google.
VexTrio, an ad fraud and subscription scam group, has been distributing fake VPN and spam blocker apps on Apple and Google app stores.
The threat actor UAC-0099 is targeting Ukrainian government agencies, defence forces, and enterprises with C# malware delivered via HTA files using court summons lures.
Europol, led by French Police, has arrested a 38-year-old administrator of the Russian-language XSS cybercrime forum.

Trends, Tools, or Tactics of Interest

Social engineering attacks have surged, with incidents nearly tripling in the first half of 2025 compared to late 2024 (from 6% to 17% of all incidents), per LevelBlue.
Akira ransomware and other malware campaigns are abusing legitimate drivers (e.g., Intel CPU tuning/ThrottleStop) to disable antivirus and EDR processes, including Microsoft Defender.
A new C2 evasion technique, “Ghost Calls,” uses TURN servers from conferencing apps (Zoom, Microsoft Teams) to tunnel traffic through trusted infrastructure.
Security researchers have demonstrated that major enterprise AI assistants (ChatGPT, Copilot, Gemini, Salesforce Einstein) can be manipulated via crafted prompts to exfiltrate or manipulate data.
Splunk researchers have developed PLoB, a behavioural fingerprinting system using AI to detect subtle post-login intrusion signals.
AI tools are increasingly used to automate security operations: Microsoft launched Project Ire, an autonomous AI agent for malware classification, and Ox Security announced an AI agent that generates code to fix vulnerabilities.
AI is significantly reducing workloads for vCISOs (by 68%), with SMBs increasingly relying on virtual CISO services.
Sextortion scams remain persistent but are now considered background noise by security professionals.
Perplexity AI is reportedly ignoring robots.txt directives and crawling websites regardless of opt-out signals.

Regulatory or Policy Developments Affecting the Security Industry

Microsoft paid out a record $17 million in bug bounties over the past 12 months, rewarding 344 security researchers across 59 countries.
WhatsApp has introduced a new security feature to help users identify potential scams when added to group chats by unknown contacts.