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: 1255

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]: 0
• Major changes to detections(s) [2]: 404
• Updated threat detection(s) [3]: 404

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

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):

APT35 (APT)

Iranian-backed group Magic Hound engages in cyber espionage targeting U.S. and Middle Eastern officials and organizations since 2014, likely working with the Islamic Revolutionary Guard Corps through elaborate social engineering tactics.

• Added kill chain phase(s): command and control
• Previously supported kill chain phase(s): command and control, delivery
• Methods added: 9

ClickFix (Phishing)

In April 2024, researchers found compromised sites leading to an iframe on pley[.]es showing an error message. The payload domain was taken offline, preventing infection. Later, the iframe was replaced with the ClearFake inject.

• Added kill chain phase(s): delivery
• Previously supported kill chain phase(s): exploitation, delivery, command and control
• MITRE ATT&CK added: T1027
• Previously existing MITRE ATT&CK: T1071, T1027, T1189, T1036
• Methods added: 1

Fake Browser (Trojan)

Attackers infect enterprise networks with malware by promoting fake browser updates on hacked websites, leading to the installation of banking trojans and later ransomware encryption on compromised networks.

• Added kill chain phase(s): exploitation
• Previously supported kill chain phase(s): delivery, exploitation, command and control
• MITRE ATT&CK added: T1189
• Previously existing MITRE ATT&CK: T1071, T1189
• Methods added: 26

Gamaredon (APT)

Gamaredon Group, active since 2013, targets individuals linked to the Ukrainian government. Named after a misspelled "Armageddon", the group's activities have been documented in early campaigns.

• Added kill chain phase(s): command and control
• Previously supported kill chain phase(s): actions on objectives, command and control, delivery
• Methods added: 24

Generic Loader (Loader)

Loaders are evolving remote access Trojans, offering user-friendly interfaces, self-healing capabilities, and a platform for botmasters to sell bots. They are typically lightweight to evade security measures.

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

LandUpdate808 (Trojan)

Fake update variants like SocGholish, Clear Fake, Smart Ape, and ClickFix are being tracked by a collaboration introducing the LandUpdate808 Fake Update Variant.

• Added kill chain phase(s): command and control
• Previously supported kill chain phase(s): delivery, command and control
• MITRE ATT&CK added: T1189
• Previously existing MITRE ATT&CK: T1189
• Methods added: 15

Lumma (Data Theft)

Lumma is a C-based information stealer sold on Russian underground forums and Telegram by LummaC since August 2022. It targets cryptocurrency wallets and has file grabber capabilities.

• Added kill chain phase(s): command and control, actions on objectives
• Previously supported kill chain phase(s): actions on objectives, command and control, installation, delivery
• MITRE ATT&CK added: T1071
• Previously existing MITRE ATT&CK: T1005, T1071, T1573
• Methods added: 204

Malicious DGA Domain (Generic CnC)

Malicious domains are used by threat actors for malware spreading and phishing. C2 servers are established worldwide to evade detection. DGA generates domain names for command and control, challenging security professionals. Stamus Networks offers specialized detection methods.

• Added kill chain phase(s): command and control
• Previously supported kill chain phase(s): command and control
• Methods added: 16

NetSupport RAT (RAT)

Remote Access Trojans allow covert surveillance and unauthorized access to victim PCs, collecting keystrokes, passwords, screenshots, and more. They differ from keyloggers by providing remote access capabilities to attackers.

• Added kill chain phase(s): command and control
• Previously supported kill chain phase(s): actions on objectives, command and control, exploitation, installation
• MITRE ATT&CK added: T1105
• Previously existing MITRE ATT&CK: T1071, T1105
• Methods added: 3

RAT Generic (RAT)

Remote Access Trojans allow covert surveillance and unauthorized access to victim PCs, collecting data like keystrokes and screenshots. They differ from keyloggers by enabling remote access for attackers.

• Added kill chain phase(s): command and control
• Previously supported kill chain phase(s): installation, command and control, actions on objectives, delivery
• MITRE ATT&CK added: T1041, T1573
• Previously existing MITRE ATT&CK: T1071, T1041, T1573
• Methods added: 2

SimpleHTTPServer (Downloader)

Python includes a basic HTTP server for sharing files or temporary content, but it is not secure for production or corporate use. Malicious actors may exploit it for malware delivery.

• Added kill chain phase(s): delivery, exploitation
• Previously supported kill chain phase(s): delivery, exploitation
• MITRE ATT&CK added: T1059
• Previously existing MITRE ATT&CK: T1059
• Methods added: 2

SocGholish (Social Engineering)

Malwarebytes found a new social engineering toolkit that uses compromised websites to perform advanced fingerprinting checks and deliver the NetSupport RAT payload.

• 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: T1071, T1027, T1189
• Methods added: 6

TA4903 (APT)

Advanced persistent threats (APTs) are stealthy threat actors, often nation states or state-sponsored groups, who gain unauthorized access to networks for political or economic motivations, utilizing various tactics to remain undetected.

• Added kill chain phase(s): delivery
• Previously supported kill chain phase(s): delivery
• Methods added: 3

TA582 (APT)

An APT is a stealthy threat actor, often nation state or state-sponsored, gaining unauthorized access and remaining undetected in a network for political or economic reasons, targeting various sectors.

• Added kill chain phase(s): command and control
• Previously supported kill chain phase(s): command and control
• Methods added: 33

Trojan Agent (Trojan)

A group of trojans with variable payloads can redirect web traffic, manipulate applications, drop/install malicious programs, and download/run additional malware. Behavior is not exhaustive.

• 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: T1041
• Previously existing MITRE ATT&CK: T1041, T1071, T1496
• Methods added: 3

Unknown APT (APT)

Sophisticated adversary with expertise and resources uses multiple attack vectors to establish presence in organizations' IT infrastructure, exfiltrate information, undermine missions, and persistently adapt to defenders.

• Added kill chain phase(s): command and control
• Previously supported kill chain phase(s): command and control, delivery
• MITRE ATT&CK added: T1071, T1001
• Previously existing MITRE ATT&CK: T1041, T1071
• Methods added: 20

Vidar (Data Theft)

Vidar Stealer is a trojan used by cyber criminals to steal personal information from infected computers.

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

XWorm (RAT)

Cyble research labs found a malware developer advertising a powerful Windows RAT on the dark web during a threat-hunting exercise.

• Added kill chain phase(s): command and control
• Previously supported kill chain phase(s): command and control, delivery
• MITRE ATT&CK added: T1573
• Previously existing MITRE ATT&CK: T1071, T1573
• Methods added: 35

Other Threat Detection Update(s)

The following threat detection(s) were improved this past week with new or updated threat methods.

Note: to see this table as a web page, please visit this webpage >>

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