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: 1638

 

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]: 181

• Updated threat detection(s) [3]: 181

 

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:

 

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):

 

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: 24

 

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, exploitation, actions on objectives

• MITRE ATT&CK added: T1189

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

• Methods added: 23

 

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: 27

 

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: 17

 

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: 9

 

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, delivery

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

• MITRE ATT&CK added: T1566

• Previously existing MITRE ATT&CK: T1041, T1071, T1001, T1566, T1102, T1105

• Methods added: 24

 

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: 57

 

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
Fake Browser	24	exploitation	dns, tls, http	2029	command and control, delivery, exploitation	dns, http, tls	2026-05-02
LandUpdate808	23	command and control	dns, tls, http	967	actions on objectives, command and control, delivery, exploitation	dns, http, tls	2026-05-01
Lumma	27	command and control, actions on objectives	dns, tls, http	8077	actions on objectives, command and control, delivery, installation	dns, http, tls	2026-05-01
SocGholish	17	command and control	dns, tls, http	2242	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2026-05-02
Trojan Downloader	9	delivery	dns, tls, http	471	actions on objectives, command and control, delivery, installation	dns, http, http1, tcp, tls, udp	2026-04-30
Unknown APT	24	command and control, delivery	dns, tls, http	2034	actions on objectives, command and control, delivery	dns, http, http1, tcp, tls	2026-04-30
XWorm	57	command and control	tcp-pkt	5137	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2026-05-02

 

Additional Resources

Technical support
Join the conversation on Discord
Follow us Twitter
Follow us on LinkedIn
Subscribe to our YouTube channel
Stamus Networks website