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January 2024 (30)

high threat

CVE-2026-32083 Windows SSDP Service Race Condition Privilege Escalation

CVE-2026-32083 is a race condition vulnerability in the Windows SSDP Service that allows an authorized local attacker to elevate privileges.

exploited Windows privilege-escalation cve-2026-32083
1r 1t 1c
high advisory

CVE-2026-32086 Function Discovery Service Race Condition Privilege Escalation

CVE-2026-32086 is a race condition vulnerability in the Function Discovery Service (fdwsd.dll) that allows an authorized local attacker to elevate privileges on a Windows system.

Windows cve-2026-32086 privilege-escalation race-condition
2r 1t 1c
high advisory

CVE-2026-32089 Use-After-Free in Windows Speech Brokered API for Privilege Escalation

CVE-2026-32089 is a use-after-free vulnerability in the Windows Speech Brokered API that allows a local attacker to elevate privileges on a vulnerable system.

Windows cve-2026-32089 privilege-escalation
2r 1t 1c
high advisory

CVE-2026-32093 Function Discovery Service Race Condition Privilege Escalation

A race condition vulnerability in the Function Discovery Service (fdwsd.dll), tracked as CVE-2026-32093, allows a locally authorized attacker to escalate privileges on a vulnerable Windows system.

Windows privilege-escalation race-condition
2r 1t 1c
high advisory

CVE-2026-7337 Type Confusion Vulnerability in Chromium V8 Engine

CVE-2026-7337 is a type confusion vulnerability in the V8 JavaScript engine that affects Google Chrome and Microsoft Edge (Chromium-based).

Chrome +1 type confusion v8 engine chromium cve-2026-7337
2r 1t 1c
critical advisory

D-Link DI-8100 Remote Buffer Overflow Vulnerability (CVE-2026-7853)

D-Link DI-8100 version 16.07.26A1 is vulnerable to a remote buffer overflow in the `sprintf` function within the `/auto_reboot.asp` file's HTTP handler component due to improper handling of the `enable/time` argument, potentially leading to arbitrary code execution.

DI-8100 buffer overflow remote code execution d-link cve-2026-7853
2r 1t 1c
high advisory

Decidim Amendment Acceptance Vulnerability

An authentication bypass vulnerability in Decidim allows any registered user to accept or reject amendments, potentially granting them co-author status on affected proposals; versions 0.19.0 through 0.30.5 and 0.31.0.rc1 through 0.31.1 are affected.

Decidim-core decidim authentication-bypass privilege-escalation web-application
2r 1t
high advisory

Deletion of Critical Scheduled Tasks

Adversaries delete critical scheduled tasks, such as those related to BitLocker, ExploitGuard, System Restore, Windows Defender, and Windows Update, to disrupt security measures and enable data destruction.

Windows attack.impact attack.t1489
2r 1t
medium advisory

Denial of Service Vulnerability in marked via Infinite Recursion

A denial of service vulnerability exists in marked version 18.0.0 due to infinite recursion when processing a specific 3-byte sequence (tab, vertical tab, and newline), leading to unbounded memory allocation and application crash.

marked denial-of-service javascript vulnerability
2r 1t
medium advisory

Detect AWS Access Key Creation

This brief outlines how to detect the creation of AWS Access Keys, a common tactic used by attackers to establish persistence and escalate privileges within compromised AWS environments.

Amazon Web Services cloud aws iam accesskey persistence
2r 1t
medium advisory

Detect Suspicious WMI Event Subscription Creation for Persistence

This threat brief details the detection of malicious Windows Management Instrumentation (WMI) event subscriptions, a technique used by attackers for persistence and privilege escalation on Windows systems.

Elastic Defend persistence wmi windows event-subscription
2r 1t
high advisory

Detect Windows Downdate Registry Activity

This detection identifies registry modifications associated with the Windows Downdate attack, specifically focusing on pending.xml file modifications outside standard locations, which could force a Windows downgrade for exploitation.

Splunk Enterprise +2 windows-downgrade registry-modification defense-evasion persistence
2r 2t
medium advisory

Detect Windows Netspy Network Scanner Execution

The Netspy network scanner, a tool for internal network discovery, is executed on a Windows endpoint to enumerate active hosts and services, potentially for reconnaissance purposes.

Splunk Enterprise +2 network-discovery windows endpoint
2r 2t
high advisory

Detecting Disabling of Windows Defender Sample Submission

An attacker modifies the Windows registry to disable the Windows Defender Submit Samples Consent feature, preventing the submission of suspicious files for analysis, and potentially evading detection.

Splunk Enterprise +3 defense-evasion registry-modification windows-defender
2r
medium advisory

Detecting Persistence via Parsing macOS Login Item Files

This brief details a method for parsing macOS login item files to detect persistence mechanisms employed by malware or threat actors.

persistence macos
2r 1t
medium advisory

Detecting Spikes in Active Directory Object Modifications

This detection identifies a spike in Active Directory group or object modifications, potentially indicating unauthorized access, defense impairment, or persistence establishment by threat actors.

Splunk Enterprise +2 active-directory persistence privilege-escalation windows
2r 1t
high advisory

Detecting Windows LAPS Password Gathering via PowerShell

This brief outlines detection strategies for adversaries attempting to retrieve LAPS passwords using PowerShell and the 'ms-Mcs-AdmPwd' property, potentially leading to lateral movement and privilege escalation within a Windows domain.

Splunk Enterprise +3 laps credential-access powershell windows
2r 2t
critical advisory

Detecting Windows Raw Access to Master Boot Record

This analytic detects suspicious raw access reads to the drive containing the Master Boot Record (MBR) using Sysmon EventCode 9, which is a common tactic used by attackers to wipe, encrypt, or overwrite the MBR as part of their impact payload.

Windows raw-disk-access mbr sysmon data-destruction
2r 1t
high advisory

Detecting Windows Screen Capture via PowerShell Script

This analytic detects the execution of a PowerShell script designed to capture screen images on a host, leveraging PowerShell Script Block Logging to identify specific script block text patterns associated with screen capture activities, potentially indicating an attempt to exfiltrate sensitive information via desktop screenshots.

Windows +2 screen-capture powershell exfiltration apt
2r 1t
medium advisory

Detecting WMIC Systeminfo Discovery Activity

This brief covers detection of adversaries using Windows Management Instrumentation Command-line (WMIC) to gather system information, specifically the `computersystem` class, a technique used for reconnaissance.

Windows wmic discovery
2r 1t
medium advisory

Detection of Abnormally Large DNS Responses Indicative of CVE-2020-1350 Exploitation

This rule detects abnormally large DNS responses indicative of exploitation attempts targeting a known overflow vulnerability (CVE-2020-1350) in Windows DNS servers, potentially leading to Remote Code Execution (RCE) or Denial of Service (DoS).

Windows DNS Server sigred dns-server vulnerability
2r 2t
high advisory

Detection of Attacker Tools on Endpoints

This analytic detects the execution of attacker tools used for unauthorized access, network scanning, privilege escalation, password dumping, or data exfiltration, based on process activity data from EDR agents and focusing on known attacker tool names.

Splunk Enterprise +3 attacker-tool endpoint privilege-escalation data-exfiltration
2r 3t
medium advisory

Detection of Azure Storage Utility Execution via Command Line Interface

Adversaries may leverage Azure Storage utilities like AzCopy and Storage Explorer post-compromise to stage or extract sensitive data from endpoints, blending malicious activity with legitimate cloud traffic.

AzCopy.exe +1 data-exfiltration azure-storage cli windows
2r 1t
high advisory

Detection of Default Cobalt Strike PowerShell Beacon

This brief outlines detection strategies for default Cobalt Strike PowerShell beacons, which are used for command and control, by identifying specific function and variable names within PowerShell script block logs.

Splunk Enterprise +2 cobaltstrike powershell beacon commandandcontrol windows
2r 2t
medium advisory

Detection of Encrypted Archive Creation with WinRAR or 7-Zip

Adversaries use WinRAR or 7-Zip with encryption options to compress and protect stolen data before exfiltration, making detection more challenging.

Defender XDR +2 collection archive exfiltration windows
2r 2t
high advisory

Detection of ETW Disabling via Registry Modification

Attackers may disable Event Tracing for Windows (ETW) by modifying specific registry keys to evade detection and hinder security monitoring, potentially leading to further system compromise.

.NETFramework +3 defense-evasion registry-modification etw ransomware windows
2r
medium advisory

Detection of Failed ESXi File Downloads

This detection identifies failed file download attempts on ESXi hosts by looking for specific error messages in system logs, potentially indicating unauthorized attempts to install malicious components or scripts.

ESXi vmware download-error anomaly black-basta
2r 2t
high advisory

Detection of Hidden Encoded Executables via Registry Modification

Attackers can hide and execute malicious code by storing it in encoded form within the Windows Registry and then executing it, evading traditional file-based detection mechanisms.

Windows defense-evasion registry-modification encoded-executable
3r 3t
high advisory

Detection of Important Scheduled Task Deletion or Disablement

Adversaries delete or disable critical scheduled tasks, such as those related to system restore, Windows Defender, BitLocker, Windows Backup, or Windows Update, to disrupt operations and potentially conduct data destructive activities.

Windows attack.execution attack.privilege-escalation attack.persistence attack.t1053.005
2r 1t
medium advisory

Detection of Obfuscated IP Addresses via Command Line Tools

The use of command-line tools like ping.exe or arp.exe with obfuscated IP addresses (hex, octal, etc.) in the command line can indicate reconnaissance activity or attempts to evade security controls by masking the true destination.

Windows reconnaissance evasion command-line
3r 1t