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: 1429

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]: 157
Updated threat detection(s) [3]: 157

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):

Blackmoon (Data Theft)

The Blackmoon banking Trojan, first analyzed in 2014, targets online banking credentials by modifying the Hosts file to redirect domain lookups. It primarily targets South Korean online banking customers via drive-by download.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): actions on objectives, command and control, installation, delivery
Methods added: 1

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): actions on objectives, delivery, command and control
Previously supported kill chain phase(s): command and control, actions on objectives, delivery
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1041, T1071
Methods added: 5

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: 16

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: 27

MuddyWater (APT)

MuddyWater is an Iranian threat group targeting mainly Middle Eastern nations, with victims in telecommunications, government, and oil sectors. Previously linked to FIN7, now believed to be a distinct group for espionage.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, delivery, actions on objectives
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1071
Methods added: 13

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

Rhadamanthys (Data Theft)

Rhadamanthys is a malware designed to steal data from infected machines.

Added kill chain phase(s): actions on objectives
Previously supported kill chain phase(s): delivery, command and control, actions on objectives
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1071
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
MITRE ATT&CK added: T1189
Previously existing MITRE ATT&CK: T1071, T1027, T1189
Methods added: 15

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): delivery, command and control
Previously supported kill chain phase(s): command and control, delivery
Methods added: 25

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
Previously supported kill chain phase(s): command and control, 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: 48

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
Blackmoon	1	command and control	http	93	actions on objectives, command and control, delivery, installation	dns, http, smtp, tcp, tcp-pkt, tls	2025-08-21
Kimsuky	5	actions on objectives, delivery, command and control	http, dns, tls	385	actions on objectives, command and control, delivery	dns, ftp, ftp-data, http, tcp, tls	2025-08-22
LandUpdate808	16	command and control	dns, tls, http	526	command and control, delivery	dns, http, tls	2025-08-23
Lumma	27	command and control, actions on objectives	dns, tls, http	6695	actions on objectives, command and control, delivery, installation	dns, http, tls	2025-08-23
MuddyWater	13	command and control	dns, tls, http	77	actions on objectives, command and control, delivery	dns, http, tcp, tls	2025-08-23
NetSupport RAT	1	command and control	http	147	actions on objectives, command and control, exploitation, installation	dns, http, tls	2025-08-22
RAT Generic	2	command and control	tcp	290	actions on objectives, command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls, udp	2025-08-23
Rhadamanthys	1	actions on objectives	tls	7	actions on objectives, command and control, delivery	http, tls	2025-08-20
SocGholish	15	command and control	dns, tls, http	1715	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2025-08-21
TA399	25	delivery, command and control	http, dns, tls	81	command and control, delivery	dns, http, tls	2025-08-20
Unknown APT	3	command and control	dns, tls, http	1162	command and control, delivery	dns, http, tcp, tls	2025-08-23
XWorm	48	command and control	tcp-pkt	3875	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2025-08-21

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