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: 1512

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]: 144
Updated threat detection(s) [3]: 144

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):

APT33 (APT)

APT33 is an Iranian threat group targeting organizations in the US, Saudi Arabia, and South Korea since 2013, with a focus on aviation and energy industries.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, delivery
Methods added: 9

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

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

Fake Service (Phishing)

Phishing involves scammers posing as familiar companies to obtain personal information. Consumers should avoid responding to suspicious emails requesting personal or financial details to prevent falling victim to these scams.

Added kill chain phase(s): delivery
Previously supported kill chain phase(s): command and control, installation, delivery, actions on objectives
MITRE ATT&CK added: T1071, T1105
Previously existing MITRE ATT&CK: T1071, 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, actions on objectives
MITRE ATT&CK added: T1189
Previously existing MITRE ATT&CK: T1189, T1105, T1071
Methods added: 15

Leaky Stealer (Data Theft)

Hybrid Analysis discovered LeakyInjector and LeakyStealer malware, targeting crypto wallets and browser history. LeakyStealer decrypts and injects payload into explorer.exe, establishes persistence, and searches for specific wallets and browser extensions.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s):
MITRE ATT&CK added: T1573
Methods added: 1

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: 48

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: 2

Powershell (Lateral Movement)

Adversaries can abuse PowerShell for execution, discovery, and code running. Examples include Start-Process and Invoke-Command cmdlets, requiring administrator permissions for remote connections.

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

Sha1 Hulud (Data Theft)

Ongoing npm supply-chain attack linked to Shai-Hulud compromised major packages, leading to trojanized GitHub repos and stolen data. 700 packages affected, 25,000+ malicious repos identified. Replicated widely.

Added kill chain phase(s): installation, actions on objectives
Previously supported kill chain phase(s): actions on objectives
Methods added: 2

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: 21

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: 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: 24

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
APT33	9	command and control	dns, tls, http	143	command and control, delivery	dns, http, tcp, tls	2025-12-03
APT35	9	delivery	dns, tls, http	1968	command and control, delivery	dns, ftp, http, tcp, tls, udp	2025-12-03
Fake Browser	3	exploitation	dns, tls, http	1811	command and control, delivery, exploitation	dns, http, tls	2025-12-02
Fake Service	4	delivery	tls, http	170	actions on objectives, command and control, delivery, installation	dns, http, tcp, tls	2025-12-04
LandUpdate808	15	command and control	dns, tls, http	688	actions on objectives, command and control, delivery	dns, http, tls	2025-12-06
Leaky Stealer	1	command and control	http	1	command and control	http	2025-12-04
Lumma	48	command and control, actions on objectives	dns, tls, http	7015	actions on objectives, command and control, delivery, installation	dns, http, tls	2025-12-06
NetSupport RAT	2	command and control	http	172	actions on objectives, command and control, exploitation, installation	dns, http, tls	2025-12-02
Powershell	1	installation	http	66	actions on objectives, command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls	2025-12-04
RAT Generic	2	command and control	tcp	325	actions on objectives, command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls, udp	2025-12-04
Sha1 Hulud	2	installation, actions on objectives	http	3	actions on objectives, installation	http	2025-12-04
SocGholish	21	command and control	dns, tls, http	1965	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2025-12-06
TA2726	3	command and control	dns, tls, http	159	command and control	dns, http, tls	2025-12-05
XWorm	24	command and control	tcp-pkt	4235	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2025-12-06

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