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: 1554

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 (WeyhroC2)

• Major changes to detections(s) [2]: 226

• Updated threat detection(s) [3]: 227

 

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 Clear NDR this past week:

 

WeyhroC2 (Offensive Tools)

Weyhro C2 is an advanced pentesting toolkit marketed on a cybercrime forum. Equipped with a full C2 infrastructure, it evades detection, bypasses AV/EDR solutions, and offers features like shell control and SOCKS5 proxy.

• Total number of detection methods: 1

• Kill chain phase(s): command and control

• MITRE ATT&CK: T1041

 

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):

 

Botnet Generic (Botnet)

A botnet is a network of compromised devices controlled by a central server to carry out cyber attacks, steal data, send spam, and grant unauthorized access to devices.

• 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: T1071

• Previously existing MITRE ATT&CK: T1071

• Methods added: 20

 

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: 18

 

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, T1105, T1071

• 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, T1105

• Methods added: 33

 

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: 4

 

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: T1573

• Previously existing MITRE ATT&CK: T1071, T1041, T1573

• Methods added: 5

 

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

• Methods added: 24

 

Stealc (Data Theft)

Stealc, introduced by actor Plymouth on underground forums, written in C, can steal data from web browsers, crypto wallets, email clients, and messaging apps, built on Vidar, Raccoon, Mars, and RedLine.

• Added kill chain phase(s): delivery, command and control

• Previously supported kill chain phase(s): command and control, exploitation, delivery

• Methods added: 3

 

Stealer and Exfiltration (Data Theft)

Info stealers gather sensitive data on infected computers to send to attackers, typically targeting online banking, social media, email, and FTP accounts. They use various methods including hooking browsers and keylogging.

• Added kill chain phase(s): actions on objectives, command and control

• Previously supported kill chain phase(s): actions on objectives, command and control, installation, delivery, exploitation

• MITRE ATT&CK added: T1095

• Previously existing MITRE ATT&CK: T1071, T1005, T1041, T1567, T1486, T1587, T1496

• Methods added: 4

 

TransparentTribe (APT)

Group targeting Indian Army and related assets in India, as well as activists and civil society in Pakistan, attributed to a Pakistani connection by TrendMicro and others.

• Added kill chain phase(s): delivery

   

• Previously supported kill chain phase(s): delivery, command and control

• MITRE ATT&CK added: T1105

• Previously existing MITRE ATT&CK: T1071, T1041

• Methods added: 1

 

Trojan Downloader (Downloader)

Trojan downloaders are malicious software that look legitimate, but can harm your computer by downloading files, often without user consent, to steal, damage, or disrupt your devices.

• Added kill chain phase(s): delivery

• Previously supported kill chain phase(s): command and control, delivery, actions on objectives, installation

• Methods added: 3

 

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: 96

 

Other Threat Detection Update(s)

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

 

Name of threat	New coverage			Total coverage			Last updated
	New Detection methods	Kill chain phases	Protocols involved	Detection methods	Kill chain phases	Protocols involved
Botnet Generic	20	command and control	dns, tls, http	58	actions on objectives, command and control, delivery	dns, http, tcp, tcp-pkt, tls	2026-01-22
Fake Browser	18	exploitation	dns, tls, http	1868	command and control, delivery, exploitation	dns, http, tls	2026-01-24
LandUpdate808	15	command and control	dns, tls, http	773	command and control, delivery	dns, http, tls	2026-01-24
Lumma	33	command and control, actions on objectives	dns, tls, http	7354	actions on objectives, command and control, delivery, installation	dns, http, tls	2026-01-24
NetSupport RAT	4	command and control	http	187	actions on objectives, command and control, exploitation, installation	dns, http, tls	2026-01-23
RAT Generic	5	command and control	tcp	331	actions on objectives, command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls, udp	2026-01-22
SocGholish	24	command and control	dns, tls, http	2026	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2026-01-24
Stealc	3	delivery, command and control	dns, tls, http	48	command and control, delivery, exploitation	dns, http, tls	2026-01-23
Stealer and Exfiltration	4	actions on objectives, command and control	dns, tls, tcp, http	507	actions on objectives, command and control, delivery, exploitation, installation	dns, ftp, http, smtp, tcp, tcp-pkt, tls	2026-01-22
TransparentTribe	1	delivery	http	47	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2026-01-22
Trojan Downloader	3	delivery	dns, tls, http	381	actions on objectives, command and control, delivery, installation	dns, http, tcp, tls, udp	2026-01-21
WeyhroC2	1	command and control	tcp	1	command and control	tcp	2026-01-22
XWorm	96	command and control	tcp-pkt	4479	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2026-01-22

 

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