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: 1658

 

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]: 124

• Updated threat detection(s) [3]: 124

 

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: 34

 

Gh0st (RAT)

gh0st RAT is a widely used remote access tool with public source code. It has been utilized by multiple threat groups for malicious activities.

• 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: T1041

• Methods added: 4

 

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: 18

 

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: 18

 

MacSync (Data Theft)

In April 2025, a new developer named "mentalpositive" released mac.c, a cheap macOS stealer. One month later, it was rebranded as MacSync with enhanced capabilities, becoming a more sophisticated malware.

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

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

• MITRE ATT&CK added: T1071, T1105

• Previously existing MITRE ATT&CK: T1105

• Methods added: 9

 

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: 15

 

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

 

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: 12

 

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

 

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
Fake Browser	34	exploitation	dns, tls, http	2093	command and control, delivery, exploitation	dns, http, tls	2026-05-29
Gh0st	4	command and control	dns, tcp-pkt, http, tls	186	actions on objectives, command and control, delivery	dns, http, tcp, tcp-pkt, tls	2026-05-29
LandUpdate808	18	command and control	dns, tls, http	1012	actions on objectives, command and control, delivery, exploitation	dns, http, tls	2026-05-28
Lumma	18	command and control, actions on objectives	dns, tls, http	8164	actions on objectives, command and control, delivery, installation	dns, http, tls	2026-05-29
MacSync	9	actions on objectives, delivery, command and control	http, dns, tls	30	actions on objectives, command and control, delivery	dns, http, tls	2026-05-28
Malicious DGA Domain	15	command and control	http, tls	277	command and control	http, tls	2026-05-27
NetSupport RAT	3	command and control	http	228	actions on objectives, command and control, exploitation, installation	dns, http, tls	2026-05-29
SocGholish	12	command and control	dns, tls, http	2296	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2026-05-29
TA4903	3	delivery	dns, tls, http	2495	delivery	dns, http, tls	2026-05-27
XWorm	8	command and control	tcp-pkt	5213	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2026-05-27

 

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