The Week in Review from Stamus Labs

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: 1456

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]: 112
Updated threat detection(s) [3]: 112

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 (formerly Stamus Security Platform) 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):

Backconnet (RAT)

Remote Access Trojans allow unauthorized access to victim PCs, mimicking keyloggers but providing remote access capabilities for attackers to monitor behavior, change settings, copy files, and more, potentially for criminal activities.

Added kill chain phase(s): delivery
Previously supported kill chain phase(s): command and control
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: 3

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: 42

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

ReverseLoader (Loader)

Loaders are basic remote access Trojans allowing attackers to control compromised computers or bots. They are traditionally lightweight to avoid detection, but can evolve with added features for cybercriminals.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): delivery
Methods added: 6

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: 24

TA2726 (APT)

TA2726 serves as a TDS for TA2727 and TA569, distributing SocGholish malware that pretends to be a browser update on compromised sites.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control
Methods added: 6

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: 29

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
Backconnet	1	delivery	http	24	command and control, delivery	http, tcp, tcp-pkt	2025-09-26
Fake Browser	3	exploitation	dns, tls, http	1739	command and control, delivery, exploitation	dns, http, tls	2025-09-27
Lumma	42	command and control, actions on objectives	dns, tls, http	6880	actions on objectives, command and control, delivery, installation	dns, http, tls	2025-09-27
NetSupport RAT	1	command and control	http	156	actions on objectives, command and control, exploitation, installation	dns, http, tls	2025-09-26
ReverseLoader	6	command and control	dns, tls, http	12	command and control, delivery	dns, http, tls	2025-09-26
SocGholish	24	command and control	dns, tls, http	1806	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2025-09-26
TA2726	6	command and control	tls, dns, http	153	command and control	dns, http, tls	2025-09-23
XWorm	29	command and control	tcp-pkt	4029	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2025-09-24

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