Coverage of named threat actors and intrusion sets examines reported incidents, infrastructure, disruption, and defensive guidance.
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Background for this topic.
Coverage under this tag concerns a named threat actor or intrusion set: an individual, group, or organized operation assessed to be responsible for malicious cyber activity. Reports may describe incidents, malware, attack infrastructure, disruption efforts, or analyst assessments. Attribution is often provisional, so actor names and reported links should be treated as intelligence judgments rather than established identity, nationality, sponsorship, or motive.
For defenders, such reporting can help connect incidents and prioritize monitoring, but indicators and techniques may be reused or become obsolete. Validate reported infrastructure, hashes, and behaviors against local telemetry; use confirmed weaknesses to guide vulnerability remediation and access controls. If activity is suspected, preserve relevant logs and evidence, contain affected accounts or systems, and coordinate investigation without relying on an actor label alone.
Threat actors are using Android Package (APK) files with unknown or unsupported compression methods to elude malware analysis
Threat actors use several evasion techniques to stay hidden
Lax policies for package naming on Microsoft's PowerShell Gallery code repository allow threat actors to perform typosquatting attacks, spoof popular packages and potentially lay the ground for massive supply chain attacks. [...]
An ongoing cyber attack campaign originating from China is targeting the Southeast Asian gambling sector to deploy Cobalt Strike beacons on compromised systems. Cybersecurity firm SentinelOne said the tactics, techniques, and procedures point to the involvement of a threat actor tracked as Bronze Starlight (aka Emperor Dragonfly or Storm-0401), which has been linked to the use of short-lived
Threat actors increasingly distribute malicious Android APKs (packaged app installers) that resist decompilation using unsupported, unknown, or heavily tweaked compression algorithms. [...]
An ongoing campaign targeting ministries of foreign affairs of NATO-aligned countries points to the involvement of Russian threat actors
Iranian threat actors are combining offensive network ops with messaging and amplification to manipulate targets' perceptions and behavior. Here are three examples.
Active flaws in the PowerShell Gallery could be weaponized by threat actors to pull off supply chain attacks against the registry's users
Nearly 90% of malicious emails manage to get past SPF, DKIM, or DMARC, since threat actors are apparently using the same filters as legitimate users.
A threat actor has compromised close to 2,000 thousand Citrix NetScaler servers in a massive campaign exploiting the critical-severity remote code execution tracked as CVE-2023-3519. [...]
Threat actors' use of Cloudflare R2 to host phishing pages has witnessed a 61-fold increase over the past six months
The threat actors behind the Monti ransomware have resurfaced after a two-month break with a new Linux version of the encryptor in its attacks targeting government and legal sectors
The npm package registry has emerged as the target of yet another highly targeted attack campaign that aims to entice developers into downloading malevolent modules
The FBI is warning of a new tactic used by cybercriminals where they promote malicious "beta" versions of cryptocurrency investment apps on popular mobile app stores that are then used to steal crypto. [...]
A new remote access trojan (RAT) called QwixxRAT is being advertised for sale by its threat actor through Telegram and Discord platforms