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: 1439

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]: 153
Updated threat detection(s) [3]: 153

\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):

APT35 (APT)

Iranian-backed group Magic Hound engages in cyber espionage targeting U.S. and Middle Eastern officials and organizations since 2014, likely working with the Islamic Revolutionary Guard Corps through elaborate social engineering tactics.

Added kill chain phase(s): delivery, command and control
Previously supported kill chain phase(s): command and control, delivery
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1041, T1071, T1587, T1566, T1665, T1102
Methods added: 9

AsyncRAT (RAT)

RAT is a tool that enables remote user control over a system. Adversaries can use existing, modify, or create their own RATs for unauthorized access or malicious activities.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, delivery, installation
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1071, T1587, T1203, T1105
Methods added: 3

Kimsuky (APT)

Kimsuky, a North Korean threat group since 2013, targets think tanks and nuclear-related entities. Recently expanded to US, Russia, Europe; known for Korea Hydro & Nuclear Power Co. compromise.

Added kill chain phase(s): command and control, actions on objectives, delivery
Previously supported kill chain phase(s): command and control, actions on objectives, delivery
MITRE ATT&CK added: T1071, T1105
Previously existing MITRE ATT&CK: T1041, T1071, T1105
Methods added: 9

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
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
Methods added: 60

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: 1

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: 22

TA399 (APT)

An APT is a sophisticated, long-term cyber-attack carried out by skilled threat actors with significant resources. Unlike short-lived attacks, APTs focus on sustained operation and specific objectives, often sponsored by nation-states or large criminal organizations.

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

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: 21

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
APT35	9	delivery, command and control	http, dns, tls	1959	command and control, delivery	dns, ftp, http, tcp, tls, udp	2025-09-04
AsyncRAT	3	command and control	dns, tls, http	481	command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls	2025-09-05
Kimsuky	9	command and control, actions on objectives, delivery	http, dns, tls	396	actions on objectives, command and control, delivery	dns, ftp, ftp-data, http, tcp, tls	2025-09-05
LandUpdate808	18	command and control	dns, tls, http	556	command and control, delivery	dns, http, tls	2025-09-06
Lumma	60	command and control, actions on objectives	http, dns, tls	6773	actions on objectives, command and control, delivery, installation	dns, http, tls	2025-09-06
NetSupport RAT	1	command and control	http	148	actions on objectives, command and control, exploitation, installation	dns, http, tls	2025-09-06
RAT Generic	1	command and control	tcp	299	actions on objectives, command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls, udp	2025-09-05
SocGholish	22	command and control	dns, tls, http	1755	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2025-09-06
TA399	6	command and control	dns, tls, http	87	command and control, delivery	dns, http, tls	2025-09-06
TA4903	3	delivery	dns, tls, http	2423	delivery	dns, http, tls	2025-09-03
XWorm	21	command and control	tcp-pkt	3920	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2025-09-04

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