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: 1560

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]: 2 (PLUGGYAPE, Tycoon)

• Major changes to detections(s) [2]: 163

• Updated threat detection(s) [3]: 191

 

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:

 

PLUGGYAPE (Backdoor)

Malware connects to a management server through web sockets or MQTT, transmits data in JSON format, generates unique ID using SHA-256, executes code from server, achieves persistence by modifying registry. [Malpedia]

• Total number of detection methods: 9

• Kill chain phase(s): delivery, command and control, actions on objectives

 

Tycoon (Phishing)

Tycoon 2FA is a PhaaS platform seen in 2023 that bypasses MFA protections, targeting Microsoft 365 and Gmail accounts. A significant threat to users, it has been grabbing headlines in recent campaigns.

• Total number of detection methods: 31

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

• MITRE ATT&CK: T1071, T1566

 

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):

 

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, command and control

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

• MITRE ATT&CK added: T1189, T1071

• Previously existing MITRE ATT&CK: T1071, T1027, T1189, T1102, T1036, T1105

• Methods added: 16

 

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: 14

 

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: 25

 

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: 60

 

MaskGramStealer (Data Theft)

Info stealers are malware that gather data from infected computers and send it to attackers. They acquire data through various methods such as keylogging, form grabbing, and web injection scripts.

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

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

• Methods added: 3

 

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: 1

 

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: 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

• Methods added: 20

 

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): delivery

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

• MITRE ATT&CK added: T1105

   

• Previously existing MITRE ATT&CK: T1071, T1005, T1041, T1567, T1095, T1486, T1587, T1496

• Methods added: 2

 

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: 12

 

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: 8

 

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
ClickFix	16	delivery, command and control	http, dns, tls	267	command and control, delivery, exploitation	dns, http, tls	2026-01-29
Fake Browser	14	exploitation	dns, tls, http	1882	command and control, delivery, exploitation	dns, http, tls	2026-01-31
LandUpdate808	25	command and control	dns, tls, http	798	command and control, delivery	dns, http, tls	2026-01-31
Lumma	60	command and control, actions on objectives	dns, tls, http	7414	actions on objectives, command and control, delivery, installation	dns, http, tls	2026-01-31
MaskGramStealer	3	command and control	dns, tls, http	12	actions on objectives, command and control	dns, http, tls	2026-01-28
NetSupport RAT	1	command and control	http	188	actions on objectives, command and control, exploitation, installation	dns, http, tls	2026-01-27
PLUGGYAPE	9	delivery, command and control, actions on objectives	tcp	9	delivery, command and control, actions on objectives	tcp	2026-01-30
RAT Generic	2	command and control	tcp	333	actions on objectives, command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls, udp	2026-01-31
SocGholish	20	command and control	dns, tls, http	2046	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2026-01-31
Stealer and Exfiltration	2	delivery	http	509	actions on objectives, command and control, delivery, exploitation, installation	dns, ftp, http, smtp, tcp, tcp-pkt, tls	2026-01-30
Trojan Downloader	12	delivery	dns, tls, http	393	actions on objectives, command and control, delivery, installation	dns, http, tcp, tls, udp	2026-01-27
Tycoon	19	delivery, command and control	http, tls	31	delivery, command and control	http, tls	2026-01-30
XWorm	8	command and control	tcp-pkt	4487	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2026-01-28

 

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