T1090.001: Internal Proxy

Velvet Ant is a threat actor operating since at least 2021. Velvet Ant is associated with complex persistence mechanisms, the targeting of network devices and appliances during operations, and the use of zero day exploits.[1][2]

FIN13 is a financially motivated cyber threat group that has targeted the financial, retail, and hospitality industries in Mexico and Latin America, as early as 2016. FIN13 achieves its objectives by stealing intellectual property, financial data, mergers and acquisition information, or PII.[1][2]

Higaisa is a threat group suspected to have South Korean origins. Higaisa has targeted government, public, and trade organizations in North Korea; however, they have also carried out attacks in China, Japan, Russia, Poland, and other nations. Higaisa was first disclosed in early 2019 but is assessed to have operated as early as 2009.[1][2][3]

Lotus Blossom is a long-standing threat group largely targeting various entities in Asia since at least 2009. In addition to government and related targets, Lotus Blossom has also targeted entities such as digital certificate issuers.[1][2][3]

Strider is a threat group that has been active since at least 2011 and has targeted victims in Russia, China, Sweden, Belgium, Iran, and Rwanda.[1][2]

Volt Typhoon is a People's Republic of China (PRC) state-sponsored actor that has been active since at least 2021, primarily targeting critical infrastructure organizations in the US and its territories including Guam. Volt Typhoon's targeting and pattern of behavior have been assessed as pre-positioning to enable lateral movement to operational technology (OT) assets for potential destructive or disruptive attacks. Volt Typhoon has emphasized stealth in operations using web shells, living-off-the-land (LOTL) binaries, hands on keyboard activities, and stolen credentials.[1][2][3][4]. The group has leveraged compromised SOHO routers to proxy command and control traffic and obscure its infrastructure, activity associated with the KV botnet.[5].

Reporting indicates a separate initial access cluster, SYLVANITE, has been observed exploiting internet-facing edge devices and transferring access to Volt Typhoon, also tracked as VOLTZITE, for follow-on operations. [6]

Turla is a cyber espionage threat group that has been attributed to Russia's Federal Security Service (FSB). They have compromised victims in over 50 countries since at least 2004, spanning a range of industries including government, embassies, military, education, research and pharmaceutical companies. Turla is known for conducting watering hole and spearphishing campaigns, and leveraging in-house tools and malware, such as Uroburos.[1][2][3][4][5]

Lazarus Group is a North Korean state-sponsored cyber threat group attributed to the Reconnaissance General Bureau (RGB). [1] [2] Lazarus Group has been active since at least 2009 and is reportedly responsible for the November 2014 destructive wiper attack on Sony Pictures Entertainment, identified by Novetta as part of Operation Blockbuster. Malware used by Lazarus Group correlates to other reported campaigns, including Operation Flame, Operation 1Mission, Operation Troy, DarkSeoul, and Ten Days of Rain.[3]

North Korea’s cyber operations have shown a consistent pattern of adaptation, forming and reorganizing units as national priorities shift. These units frequently share personnel, infrastructure, malware, and tradecraft, making it difficult to attribute specific operations with high confidence. Public reporting often uses “Lazarus Group” as an umbrella term for multiple North Korean cyber operators conducting espionage, destructive attacks, and financially motivated campaigns.[4][5][6]

APT39 is one of several names for cyber espionage activity conducted by the Iranian Ministry of Intelligence and Security (MOIS) through the front company Rana Intelligence Computing since at least 2014. APT39 has primarily targeted the travel, hospitality, academic, and telecommunications industries in Iran and across Asia, Africa, Europe, and North America to track individuals and entities considered to be a threat by the MOIS.[1][2][3][4][5]

Pay2Key is a ransomware written in C++ that has been used by Fox Kitten since at least July 2020 including campaigns against Israeli companies. Pay2Key has been incorporated with a leak site to display stolen sensitive information to further pressure victims into payment.[1][2]

Duqu is a malware platform that uses a modular approach to extend functionality after deployment within a target network. [1]

CHOPSTICK is a malware family of modular backdoors used by APT28. It has been used since at least 2012 and is usually dropped on victims as second-stage malware, though it has been used as first-stage malware in several cases. It has both Windows and Linux variants. [1] [2] [3] [4] It is tracked separately from the X-Agent for Android.

GlassWorm is a worm that propagated through supply chain attacks by compromising repository credentials from victim environments and having malicious payloads added to those compromised accounts for distribution to victims across the various development ecosystems.[1][2][3] GlassWorm has numerous variants, including Rust binaries, encrypted JavaScript and a variant leveraging invisible Unicode characters that made reverse engineering difficult.[4][1][5] GlassWorm has employed a unique command and control (C2) methodology using Solana blockchain.[6][1] GlassWorm was first reported in October 2025.[6][1][3]

HiddenFace is a modular backdoor developed and used exclusively by MirrorFace since at least 2021. HiddenFace can communicate both actively and passively and has been used against political and academic targets.[1][2][3]

Drovorub is a Linux malware toolset comprised of an agent, client, server, and kernel modules, that has been used by APT28.[1]

Cobalt Strike is a commercial, full-featured, remote access tool that bills itself as “adversary simulation software designed to execute targeted attacks and emulate the post-exploitation actions of advanced threat actors”. Cobalt Strike’s interactive post-exploit capabilities cover the full range of ATT&CK tactics, all executed within a single, integrated system.[1]

In addition to its own capabilities, Cobalt Strike leverages the capabilities of other well-known tools such as Metasploit and Mimikatz.[1]

Mafalda is a flexible interactive implant that has been used by Metador. Security researchers assess the Mafalda name may be inspired by an Argentinian cartoon character that has been popular as a means of political commentary since the 1960s. [1]

Mythic is an open source, cross-platform post-exploitation/command and control platform. Mythic is designed to "plug-n-play" with various agents and communication channels.[1][2][3] Deployed Mythic C2 servers have been observed as part of potentially malicious infrastructure.[4]

Winnti for Windows is a modular remote access Trojan (RAT) that has been used likely by multiple groups to carry out intrusions in various regions since at least 2010, including by one group referred to as the same name, Winnti Group.[1][2][3][4]. The Linux variant is tracked separately under Winnti for Linux.[5]

MiniDuke is malware that was used by APT29 from 2010 to 2015. The MiniDuke toolset consists of multiple downloader and backdoor components. The loader has been used with other MiniDuke components as well as in conjunction with CosmicDuke and PinchDuke. [1]

FatDuke is a backdoor used by APT29 since at least 2016.[1]

The SolarWinds Compromise was a sophisticated supply chain cyber operation conducted by APT29 that was discovered in mid-December 2020. APT29 used customized malware to inject malicious code into the SolarWinds Orion software build process that was later distributed through a normal software update; they also used password spraying, token theft, API abuse, spear phishing, and other supply chain attacks to compromise user accounts and leverage their associated access. Victims of this campaign included government, consulting, technology, telecom, and other organizations in North America, Europe, Asia, and the Middle East. This activity has been labled the StellarParticle campaign in industry reporting.[1] Industry reporting also initially referred to the actors involved in this campaign as UNC2452, NOBELIUM, Dark Halo, and SolarStorm.[2][3][4][5][1][6][7][8]

In April 2021, the US and UK governments attributed the SolarWinds Compromise to Russia's Foreign Intelligence Service (SVR); public statements included citations to APT29, Cozy Bear, and The Dukes.[9][10][11] The US government assessed that of the approximately 18,000 affected public and private sector customers of Solar Winds’ Orion product, a much smaller number were compromised by follow-on APT29 activity on their systems.[12]

Operation Wocao was a cyber espionage campaign that targeted organizations around the world, including in Brazil, China, France, Germany, Italy, Mexico, Portugal, Spain, the United Kingdom, and the United States. The suspected China-based actors compromised government organizations and managed service providers, as well as aviation, construction, energy, finance, health care, insurance, offshore engineering, software development, and transportation companies.[1]

Security researchers assessed the Operation Wocao actors used similar TTPs and tools as APT20, suggesting a possible overlap. Operation Wocao was named after an observed command line entry by one of the threat actors, possibly out of frustration from losing webshell access.[1]

APT28 Nearest Neighbor Campaign was conducted by APT28 from early February 2022 to November 2024 against organizations and individuals with expertise on Ukraine. APT28 primarily leveraged living-off-the-land techniques, while leveraging the zero-day exploitation of CVE-2022-38028. Notably, APT28 leveraged Wi-Fi networks in close proximity to the intended target to gain initial access to the victim environment. By daisy-chaining multiple compromised organizations nearby the intended target, APT28 discovered dual-homed systems (with both a wired and wireless network connection) to enable Wi-Fi and use compromised credentials to connect to the victim network.[1]