The Week in Review from Stamus Labs

Welcome to the weekly threat detection update report from Stamus Networks. Each week, you will receive this email with a summary of the updates.

Current Stamus Threat Intelligence (STI) release version: 1109

This week, in addition to daily ruleset and IOC updates, we provided Stamus Security Platform customers with the following improved defense(s):

New threat detection(s) added [1]: 1 (Mythic)
Major changes to detections(s) [2]: 156
Updated threat detection(s) [3]: 157

Note: a "method" as referenced below, is a discrete detection vector for a given threat.

New Threat(s) Detected

The following detections were added to your Stamus Security Platform (SSP) this past week:

Mythic (RAT)

A cross-platform, post-exploit, red teaming framework built with GoLang, docker, docker-compose, and a web browser UI. It's designed to provide a collaborative and user friendly interface for operators, managers, and reporting throughout red teaming. Github

Total number of detection methods: 1
Kill chain phase(s): command and control
MITRE ATT&CK: T1071

Major Detection Changes

The following detections were updated this past week with changes to kill chain phase(s) or MITRE ATT&CK tactic(s)/technique(s):

AsyncRAT (RAT)

A remote access tool (RAT) is a piece of software that allows a remote user to control a system as if they had physical access to that system. An adversary may utilize existing RATs, modify existing RATs, or create their own RAT. MITRE

Added kill chain phase(s): delivery
Previously supported kill chain phase(s): command and control, delivery
Methods added: 1

Command and Control (Generic CnC)

Adversaries may communicate using a custom command and control protocol instead of encapsulating commands/data in an existing Standard Application Layer Protocol. Implementations include mimicking well-known protocols or developing custom protocols (including raw sockets) on top of fundamental protocols provided by TCP/IP/another standard network stack.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, actions on objectives, delivery, installation
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1071, T1587, T1573, T1566, T1486, T1496
Methods added: 1

Covenant (RAT)

Covenant is a .NET command and control framework that aims to highlight the attack surface of .NET, make the use of offensive .NET tradecraft easier, and serve as a collaborative command and control platform for red teamers.

Covenant is an ASP.NET Core, cross-platform application that includes a web-based interface that allows for multi-user collaboration. Github

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): exploitation, command and control
MITRE ATT&CK added: T1041
Previously existing MITRE ATT&CK: T1041
Methods added: 1

Fake Browser (Trojan)

Attackers are utilizing hacked web sites that promote fake browser updates to infect targets with banking trojans. In some cases, post exploitation toolkits are later executed to encrypt the compromised network with ransomware.

Between May and September 2019, FireEye has conducted multiple incident response cases where enterprise customers were infected with malware through fake browser updates.

Hacked sites would display these "fakeupdates" through JavaScript alerts that state the user is using an old version of a web browser and that they should download an offered "update" to keep the browser running "smoothly and securely".

bleepingcomputer

Added kill chain phase(s): exploitation, command and control
Previously supported kill chain phase(s): delivery, exploitation, command and control
MITRE ATT&CK added: T1189
Previously existing MITRE ATT&CK: T1189
Methods added: 42

Glupteba (Downloader)

Glupteba is a trojan-type program, malicious software that installs other programs of this type. Cyber criminals distribute Glupteba through malicious advertisements that can be injected into legitimate websites or advertising networks. Research shows that Glubteba can be used to distribute a browser stealer or router exploiter. In any case, this malware should be uninstalled immediately. Pcrisk

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control
Methods added: 2

JaskaGO (Data Theft)

The malware is equipped with an extensive array of commands from its Command and Control (C&C) server. JaskaGO can persist in different methods in infected system. Users face a heightened risk of data compromise as the malware excels at exfiltrating valuable information, ranging from browser credentials to cryptocurrency wallet details and other sensitive user files. AT&T

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): actions on objectives
Methods added: 2

Kryptik (Trojan)

Malware of this family consists of Trojans that use anti-emulation, anti-debugging, and code obfuscation to prevent their analysis. Kaspersky

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, actions on objectives, delivery
MITRE ATT&CK added: T1041
Previously existing MITRE ATT&CK: T1587
Methods added: 1

Lumma (Data Theft)

Lumma is an information stealer written in C, sold as a Malware-as-a-Service by LummaC on Russian-speaking underground forums and Telegram since at least August 2022. Lumma's capabilities are those of a classic stealer, with a focus on cryptocurrency wallets, and file grabber capabilities. Malpedia

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): actions on objectives, command and control, installation
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1005, T1071, T1573
Methods added: 52

Parrot TDS (Trojan)

Parrot TDS acts as a gateway for further malicious campaigns to reach potential victims. In this particular case, the infected sites’ appearances are altered by a campaign called FakeUpdate (also known as SocGholish), which uses JavaScript to display fake notices for users to update their browser, offering an update file for download. The file observed being delivered to victims is a remote access tool. Avast

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, delivery
Methods added: 3

PrivateLoader (Downloader)

The service behind this PrivateLoader PPI campaign and its operators are unknown, as it was not possible to connect the downloader to a specific underground PPI service at the time of this report. However, we observed PrivateLoader’s main command and control (C2) servers also host the administration panel, which is based on the AdminLTE 3 dashboard template.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1071
Methods added: 2

Rhadamanthys (Data Theft

Rhadamanthys is a stealer-type malware, and as its name implies - it is designed to extract data from infected machines. Pcrisk

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): delivery, actions on objectives
MITRE ATT&CK added: T1071
Methods added: 1

SocGholish (Social Engineering)

It leverages compromised websites and performs some of the most creative fingerprinting checks we’ve seen, before delivering its payload (NetSupport RAT). Malwarebytes

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, exploitation, delivery, reconnaissance, actions on objectives
MITRE ATT&CK added: T1189
Previously existing MITRE ATT&CK: T1027, T1189, T1587
Methods added: 5

TA4903 (APT)

An advanced persistent threat (APT) is a stealthy computer network threat actor, typically a nation state or state-sponsored group, which gains unauthorized access to a computer network and remains undetected for an extended period. In recent times, the term may also refer to non-state sponsored groups conducting large-scale targeted intrusions for specific goals.

Such threat actors' motivations are typically political or economic. To date, every major business sector has recorded instances of attacks by advanced actors with specific goals seeking to steal, spy or disrupt. These include government, defense, financial services, legal services, industrial, telecoms, consumer goods, and many more. Some groups utilize traditional espionage vectors, including social engineering, human intelligence and infiltration to gain access to a physical location to enable network attacks. The purpose of these attacks is to place custom malicious code on one or multiple computers for specific tasks.

Source: Wikipedia

Added kill chain phase(s): delivery
Previously supported kill chain phase(s): delivery
MITRE ATT&CK added: T1566
Previously existing MITRE ATT&CK: T1566
Methods added: 5

TA582 (APT)