Threat Intelligence Directory

GTFire is a threat actor that leverages Google Firebase for hosting phishing pages and Google Translate to disguise malicious URLs, effectively bypassing security filters. The campaign employs a multi-step redirect chain to obscure the final phishing destination and utilizes All-in-1 PHP phishing scripts for rapid deployment and credential harvesting. Credentials are exfiltrated via URL parameters in a standard HTTP GET request, with minimal operational overhead.

[Group5](https://attack.mitre.org/groups/G0043) is a threat group with a suspected Iranian nexus, though this attribution is not definite. The group has targeted individuals connected to the Syrian opposition via spearphishing and watering holes, normally using Syrian and Iranian themes. [Group5](https://attack.mitre.org/groups/G0043) has used two commonly available remote access tools (RATs), [njRAT](https://attack.mitre.org/software/S0385) and [NanoCore](https://attack.mitre.org/software/S0336), as well as an Android RAT, DroidJack. (Citation: Citizen Lab Group5)

Groundbait is a group targeting anti-government separatists in the self-declared Donetsk and Luhansk People’s Republics.

GRIM SPIDER is a sophisticated eCrime group that has been operating the Ryuk ransomware since August 2018, targeting large organizations for a high-ransom return. This methodology, known as “big game hunting,” signals a shift in operations for WIZARD SPIDER, a criminal enterprise of which GRIM SPIDER appears to be a cell. The WIZARD SPIDER threat group, known as the Russia-based operator of the TrickBot banking malware, had focused primarily on wire fraud in the past. Similar to Samas and BitPaymer, Ryuk is specifically used to target enterprise environments. Code comparison between versions of Ryuk and Hermes ransomware indicates that Ryuk was derived from the Hermes source code and has been under steady development since its release. Hermes is commodity ransomware that has been observed for sale on forums and used by multiple threat actors. However, Ryuk is only used by GRIM SPIDER and, unlike Hermes, Ryuk has only been used to target enterprise environments. Since Ryuk’s appearance in August, the threat actors operating it have netted over 705.80 BTC across 52 transactions for a total current value of $3,701,893.98 USD. Grim Spider is reportedly associated with Lunar Spider and Wizard Spider.

GREF is a China-aligned APT group that has been active since at least March 2017. They are known for using custom backdoors, loaders, and ancillary tools in their targeted attacks. Recently, they have been attributed to two active Android campaigns that distribute the BadBazaar malware through malicious apps on official and alternative app stores. GREF has targeted Android users, particularly Uyghurs and other Turkic ethnic minorities outside of China, using trojanized versions of popular messaging apps like Signal and Telegram.

GreenSpot is an APT group believed to operate from Taiwan, active since at least 2007, primarily targeting government, academic, and military entities in China through phishing campaigns. The group frequently targets 163.com, aiming to steal login credentials using deceptive domains, manipulated TLS certificates, and counterfeit interfaces. Their tactics highlight the sophistication of modern credential theft operations, necessitating detection efforts focused on irregular domain registrations and certificate anomalies.

Greenbug was discovered targeting a range of organizations in the Middle East including companies in the aviation, energy, government, investment, and education sectors.

GreedyBear is a sophisticated threat actor responsible for over $1 million in cryptocurrency theft through a campaign involving 150 malicious Firefox extensions, nearly 500 malicious executables, and numerous fraudulent websites. They employ techniques such as 'Extension Hollowing' to replace legitimate extensions with malicious versions that capture wallet credentials. The campaign is centralized, with most malicious domains resolving to a single IP address, and it has expanded to target other browsers while utilizing AI-generated code to enhance scalability and evade detection.

Gray Sandstorm is an Iran-linked threat actor that has been active since at least 2012. They have targeted defense technology companies, maritime transportation companies, and Persian Gulf ports of entry. Their primary method of attack is password spraying, and they have been observed using tools like o365spray. They have a specific focus on US and Israeli targets and are likely operating in support of Iranian interests.

Grayling activity was first observed in early 2023, when a number of victims were identified with distinctive malicious DLL side-loading activity. Grayling appears to target organisations in Asia, however one unknown organisation in the United States was also targeted. Industries targeted include Biomedical, Government and Information Technology. Grayling use a variety of tools during their attacks, including well known tools such as Cobalt Strike and Havoc and also some others.

TAG-150, also known as GrayBravo, is a sophisticated threat actor responsible for developing multiple custom malware families, including CastleLoader and CastleRAT, and operates a large-scale, multi-layered infrastructure. The group employs the ClickFix technique to distribute malware through phishing attacks that impersonate legitimate services, leveraging deceptive domains and fake repositories. Insikt Group has identified four distinct activity clusters associated with TAG-150, each targeting different victim profiles and utilizing unique TTPs.

IBM X-Force Research uncovered a Trojan hybrid spawned from the Nymaim and Gozi ISFB malware. It appears that the operators of Nymaim have recompiled its source code with part of the Gozi ISFB source code, creating a combination that is being actively used in attacks against more than 24 U.S. and Canadian banks, stealing millions of dollars so far. X-Force named this new hybrid GozNym. The new GozNym hybrid takes the best of both the Nymaim and Gozi ISFB malware to create a powerful Trojan. From the Nymaim malware, it leverages the dropper’s stealth and persistence; the Gozi ISFB parts add the banking Trojan’s capabilities to facilitate fraud via infected Internet browsers. The end result is a new banking Trojan in the wild.

GOLD WINTER are a financially motivated group, likely based in Russia, who operate the Hades ransomware. Hades activity was first identified in December 2020 and its lack of presence on underground forums and marketplaces leads CTU researchers to conclude that it is not operated under a ransomware as a service affiliate model. GOLD WINTER do employ name-and-shame tactics, where data is stolen and used as additional leverage over victims, but rather than a single centralized leak site CTU researchers have observed the group using Tor sites customized for each victim that include a Tox chat ID for communication, which also appears to be unique for each victim.

GOLD WATERFALL is a group of financially motivated cybercriminals responsible for the creation, distribution, and operation of the Darkside ransomware. Active since August 2020, GOLD WATERFALL uses a variety of tactics, techniques, and procedures (TTPs) to infiltrate and move laterally within targeted organizations to deploy Darkside ransomware to its most valuable resources. Among these TTPs are using malicious documents delivered by email to establish a foothold and using stolen credentials to access victims' remote access services. In November 2020, the 'darksupp' persona was observed advertising an affiliate program on several semi-exclusive underground forums, marking GOLD WATERFALL's entry into the ransomware-as-a-service (RaaS) landscape.

GOLD SYMPHONY is a financially motivated cybercrime group, likely based in Russia, that is responsible for the development and sale on underground forums of the Buer Loader malware. First discovered around August 2019, Buer Loader is offered as a malware-as-a-service (MasS) and has been advertised by a threat actor using the handle 'memeos'. Customers include GOLD BLACKBURN, the operators of the TrickBot malware. In addition to TrickBot, Buer Loader has been reported to download Cobalt Strike and other tools for use in post-intrusion ransomware attacks.

[GOLD SOUTHFIELD](https://attack.mitre.org/groups/G0115) is a financially motivated threat group active since at least 2018 that operates the [REvil](https://attack.mitre.org/software/S0496) Ransomware-as-a Service (RaaS). [GOLD SOUTHFIELD](https://attack.mitre.org/groups/G0115) provides backend infrastructure for affiliates recruited on underground forums to perpetrate high value deployments. By early 2020, [GOLD SOUTHFIELD](https://attack.mitre.org/groups/G0115) started capitalizing on the new trend of stealing data and further extorting the victim to pay for their data to not get publicly leaked.(Citation: Secureworks REvil September 2019)(Citation: Secureworks GandCrab and REvil September 2019)(Citation: Secureworks GOLD SOUTHFIELD)(Citation: CrowdStrike Evolution of Pinchy Spider July 2021)

GOLD SKYLINE is a financially motivated cybercriminal threat group operating from Nigeria engaged in high-value wire fraud facilitated by business email compromise (BEC) and spoofing (BES). Also known as Wire-Wire Group 1 (WWG1), GOLD SKYLINE has been active since at least 2016 and relies heavily on compromised email accounts, social engineering, and increasingly malware to divert inter-organization funds transfers.

GOLD RIVERVIEW was a financially motivated cybercriminal group that facilitated the distribution of malware- and scam-laden spam email on behalf of its customers. This threat group authored and sold the Necurs rootkit beginning in early 2014, including to GOLD EVERGREEN who integrated it into Gameover Zeus. GOLD RIVERVIEW also operated a global botnet that was colloquially known as Necurs (CraP2P) and was a major source of spam email from 2016 through 2018. Necurs distributed malware such as GOLD DRAKE's Dridex (Bugat v5), GOLD BLACKBURN's TrickBot, and other families like Locky and FlawedAmmy. Necurs also distributed a large volume of email pushing securities 'pump and dump' scams, rogue pharmacies, and fraudulent dating sites. On March 4, 2019 all three active segments of the Necurs botnet ceased operation and have not since resumed. On March 10, 2020 Microsoft took civil action against GOLD RIVERVIEW and made technical steps that would complicate the threat actors' ability to reconstitute the botnet.

GOLD REBELLION is a financially motivated cybercriminal threat group that operates the Black Basta name-and-shame ransomware. The group posted its first victim to its leak site in April 2022 and has continued to publish victim names at a rate of around 15 a month since then. GOLD REBELLION has not openly advertised or appeared to recruit for an affiliate program but the variety of tactics, techniques and procedures (TTP) observed in Black Basta intrusions suggests that multiple individuals are engaged in the ransomware scheme.Several security vendors and independent researchers have suggested the distributors of Black Basta may be former affiliates of GOLD ULRICK's Conti operation. Technical artifacts analyzed by CTU researchers suggest that Black Basta has been under development since at least early February 2022, several weeks before extensive public leaks detailed GOLD ULRICK's Conti operation. In November 2022, researchers at SentinelOne linked custom tooling used by GOLD REBELLION to the GOLD NIAGARA (FIN7) threat group. CTU researchers have not made independent observations corroborating a relationship between these threat groups or any others.GOLD REBELLION appear to have been a key customer of GOLD LAGOON's Qakbot: CTU researchers observed multiple incidents where Black Basta was distributed through it as an initial access vector (IAV), leading to Cobalt Strike and further lateral movement into the victim network. Following the takedown of Qakbot in August 2023, GOLD REBELLION explored new methods of delivery, including DarkGate and Pikabot. In one incident, CTU researchers observed a threat actor gain access to a victim network through a managed security services provider (MSSP). In October 2024, GOLD REBELLION likely exploited a vulnerability in a Sonic Wall VPN device for access. Also in 2024, CTU researchers observed multiple instances of the group using social engineering to convince victims to download remote management and monitoring tools like AnyDesk and Quick Assist. After spamming inboxes with multiple emails, the threat actors approached the affected users via Teams, purporting to be IT Support or Help Desk employees offering assistance with email inbox issues.Other tools members of the group have used include the SystemBC back connect malware, PsExec for remote execution, RDP for lateral movement, batch files to delete their own tools and disable anti-virus programs for defense evasion, and both Rclone and MegaSync for data exfiltration.

Operational since at least October 2020, GOLD NORTHFIELD is a financially motivated cybercriminal threat group that leverages GOLD SOUTHFIELD's REvil ransomware in their attacks. To do this, the threat actors replace the configuration of the REvil ransomware binary with their own in an effort to repurpose the ransomware for their operations. GOLD NORTHFIELD has given this modified REvil ransomware variant the name 'LV ransomware'.

GOLD MANSARD is a financially motivated cybercriminal threat group that operated the Nemty ransomware from August 2019. The threat actor behind Nemty is known on Russian underground forums as 'jsworm'. Nemty was operated as a ransomware as a service (RaaS) affiliate program and featured a 'name and shame' website where exfiltrated victim data was leaked. In April 2020, jsworm appeared to acquire new partners and retired the Nemty ransomware. This was followed by the introduction of Nefilim ransomware, which does not operate as an affiliate model. Nefilim has been used in post-intrusion ransomware attacks against organizations in logistics, telecommunications, energy and other sectors.

GOLD GARDEN was a financially motivated cybercriminal threat group that authored and operated the GandCrab ransomware from January 2018 through May 2019. GandCrab was operated as a ransomware-as-a-service operation whereby numerous affiliates distributed the malware and split ransom payments with the core operators. GOLD GARDEN maintained exclusive control of the development of GandCrab and associated command and control (C2) infrastructure. Individual affiliates, of which there were frequently more than a dozen in operation simultaneously, coordinated the distribution of GandCrab through spam emails, web exploit kits, pay-per-install botnets, and scan-and-exploit style attacks. On May 31, 2019 the operators announced they have halted operations with no intent to resume for unknown reasons. In April 2019 the operators of GOLD GARDEN transferred the source code of GandCrab to GOLD SOUTHFIELD who used it as the foundation of the REvil ransomware operation. GOLD SOUTHFIELD operates a similar affiliate program comprised largely of former GandCrab users and other groups recruited from underground forums.

GOLD GALLEON is a financially motivated cybercriminal threat group comprised of at least 20 criminal associates that collectively carry out business email compromise (BEC) and spoofing (BES) campaigns. The group appears to specifically target maritime organizations and their customers. CTU researchers have observed GOLD GALLEON targeting firms in South Korea, Japan, Singapore, Philippines, Norway, U.S., Egypt, Saudi Arabia, and Colombia. The threat actors leverage tools, tactics, and procedures that are similar to those used by other BEC/BES groups CTU researchers have previously investigated, such as GOLD SKYLINE. The groups have used the same caliber of publicly available malware (inexpensive and commodity remote access trojans), crypters, and email lures.

GOLD FLANDERS is a financially motivated group responsible for distributed denial of service (DDOS) attacks linked to extortion emails demanding between 5 and 30 bitcoins. The attacks consist mostly of fragmented UDP packets (DNS and NTP reflection) as well as other traffic that can vary per victim. The arrival of the extortion email is timed to coincide with a DDOS attack consisting of traffic between 20 Gbps and 200 Gbps and 12-15 million packets per second, lasting between 20 and 70 minutes targeted at a particular Autonomous System Number (ASN) or group of IP addresses. In some cases victim organisations have replied to these extortion emails and received personal replies from GOLD FLANDERS operators within 20 minutes.

GOLD FAIRFAX is a financially motivated cybercriminal threat group responsible for the creation, distribution, and operation of the Ramnit botnet. Ramnit, the phonetic spelling of RMNet, the internal name of the core module, began operation in April 2010 and became widespread in July 2010. A particularly virulent file-infecting component of early Ramnit variants that spreads by modifying executables and HTML files has resulted in the continued prevalence of those early variants. Currently, Ramnit remains an actively maintained and distributed threat. The intent of Ramnit is to intercept and manipulate online financial transactions through modification of web browser behavior ('man-in-the-browser').

GOLD EVERGREEN was a financially motivated cybercriminal threat group that operated the Gameover Zeus (aka Mapp, P2P Zeus) botnet until June 2014. It encompasses an expansive and long running criminal conspiracy operated by a confederation of individuals calling themselves The Business Club from the mid 2000s until 2014. GOLD EVERGREEN's technical operation was facilitated primarily through botnets using the Zeus, JabberZeus, and eventually Gameover Zeus malware families. These malware families were designed and maintained by a Russian national Evgeniy Bogachev (aka 'slavik') who was indicted by the U.S. DOJ in 2014 and remains a fugitive.

GOLD DUPONT is a financially motivated cybercriminal threat group that specializes in post-intrusion ransomware attacks using 777 (aka Defray777 or RansomExx) malware. Active since November 2018, GOLD DUPONT establishes initial access into victim networks using stolen credentials to remote access services like virtual desktop infrastructure (VDI) or virtual private networks (VPN). From October 2019 to early 2020 the group used GOLD BLACKBURN's TrickBot malware as an initial access vector (IAV) during some intrusions. Since July 2020, the group has also used GOLD SWATHMORE's IcedID (Bokbot) malware as an IAV in some intrusions.

GOLD CABIN is a financially motivated cybercriminal threat group operating a malware distribution service on behalf of numerous customers since 2018. GOLD CABIN uses malicious documents, often contained in password-protected archives, delivered through email to download and execute payloads. The second-stage payloads are most frequently Gozi ISFB (Ursnif) or IcedID (Bokbot), sometimes using intermediary malware like Valak. GOLD CABIN infrastructure relies on artificial appearing and frequently changing URLs created with a domain generation algorithm (DGA). The URLs host a PHP object that returns the malware as a DLL file.

GOLD BURLAP is a group of financially motivated criminals responsible for the development of the Pysa ransomware, also referred to as Mespinoza. Pysa is a cross-platform ransomware with known versions written in C++ and Python. As of December 2020, approximately 50 organizations had reportedly been targeted in Pysa ransomware attacks. The operators leverage 'name and shame' tactics to apply additional pressure to victims. As of January 2021, CTU researchers had found no Pysa advertisements on underground forums, which likely indicates that it is not operated as ransomware as a service (RaaS).

GoldFactory is a threat actor group attributed to developing sophisticated mobile banking malware targeting victims primarily in the Asia-Pacific region, specifically Vietnam and Thailand. They utilize social engineering to deliver malware to victims' devices and have close connections to the Gigabud malware family. GoldFactory's Trojans, such as GoldPickaxe and GoldDigger, employ tactics like smishing, phishing, and fake login screens to compromise victims' phones and steal sensitive information. Their evolving malware suite demonstrates a high level of operational maturity and ingenuity, requiring a proactive and multi-faceted cybersecurity approach to detect and mitigate their threats.

GoldenJackal activity is characterized by the use of compromised WordPress websites as a method to host C2-related logic. Kaspersky believes the attackers upload a malicious PHP file that is used as a relay to forward web requests to another backbone C2 server. They developed a collection of .NET malware tools known as Jackal.

GOFFEE is a threat actor that has targeted entities in the Russian Federation since early 2022, employing spear phishing emails with malicious attachments, including modified Owowa and patched explorer.exe. They have utilized PowerTaskel, a non-public Mythic agent in PowerShell, and introduced a new implant called "PowerModul" for attacks against sectors such as media, telecommunications, and government. GOFFEE has increasingly shifted to a binary Mythic agent for lateral movement and has incorporated Word documents with malicious VBA scripts in their infection chains. The group has demonstrated a consistent evolution in their TTPs while maintaining identifiable characteristics that attribute their campaigns with high confidence.

Goblin Panda is one of a handful of elite Chinese advanced persistent threat (APT) groups. Most Chinese APTs target the United States and NATO, but Goblin Panda focuses primarily on Southeast Asia.

The hacker said that he put up the data for sale mainly because these companies had failed to protect passwords with strong encryption algorithms like bcrypt. Most of the hashed passwords the hacker put up for sale today can cracked with various levels of difficulty --but they can be cracked. "I got upset because I feel no one is learning," the hacker told ZDNet in an online chat earlier today. "I just felt upset at this particular moment, because seeing this lack of security in 2019 is making me angry." In a conversation with ZDNet last month, the hacker told us he wanted to hack and put up for sale more than one billion records and then retire and disappear with the money. But in a conversation today, the hacker says this is not his target anymore, as he learned that other hackers have already achieved the same goal before him. Gnosticplayers also revealed that not all the data he obtained from hacked companies had been put up for sale. Some companies gave into extortion demands and paid fees so breaches would remain private. "I came to an agreement with some companies, but the concerned startups won't see their data for sale," he said. "I did it that's why I can't publish the rest of my databases or even name them."

Gitloker is a threat actor group targeting GitHub repositories, wiping their contents, and extorting victims for their data. They use stolen credentials to compromise accounts, claim to have created a backup, and instruct victims to contact them on Telegram. The attackers leave a ransom note in the form of a README file, urging victims to negotiate the return of their data. GitHub is working to combat these evolving attacks and the vulnerabilities they exploit.

Threat actor tracked by Malpedia.

Threat actor tracked by Malpedia.

Ghostwriter is referred as an 'activity set', with various incidents tied together by overlapping behavioral characteristics and personas, rather than as an actor or group in itself.

GhostSec is a hacktivist group that emerged as an offshoot of Anonymous. They primarily focused on counterterrorism efforts and monitoring online activities associated with terrorism. They gained prominence following the 2015 Charlie Hebdo shooting in Paris and the rise of ISIS.

GhostRedirector is a China-aligned threat actor that has compromised at least 65 Windows servers across various sectors, primarily in Brazil, Thailand, and Vietnam. It employs a passive C++ backdoor named Rungan and a malicious IIS module called Gamshen to maintain persistent access and manipulate search engine results for SEO fraud. The actor utilizes public exploits like EfsPotato and BadPotato for privilege escalation and abuses code-signing certificates to evade detection. GhostRedirector's operations involve installing remote access tools, creating rogue administrator accounts, and leveraging SQL injection vulnerabilities to execute PowerShell for downloading malicious payloads.