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: 1468

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]: 2 (Insecure legacy protocol - NetBIOS, Klopatra)
Major changes to detections(s) [2]: 53
Updated threat detection(s) [3]: 62

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:

Klopatra (RAT)

In August 2025, Cleafy's Threat Intelligence team discovered Klopatra, a sophisticated Android malware targeting financial institutions in Spain and Italy, with over 3,000 compromised devices.

Total number of detection methods: 9
Kill chain phase(s): command and control
MITRE ATT&CK: T1041

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
Methods added: 3

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: 12

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: 3

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: 2

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: 4

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: 3

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): delivery
Previously supported kill chain phase(s): delivery, installation, command and control
MITRE ATT&CK added: T1105
Previously existing MITRE ATT&CK: T1105
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: 6

Trojan Agent (Trojan)

A group of trojans with variable payloads can redirect web traffic, manipulate applications, drop/install malicious programs, and download/run additional malware. Behavior is not exhaustive.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, actions on objectives, delivery, installation
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1041, T1071, T1496
Methods added: 1

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

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	3	exploitation	dns, tls, http	1745	command and control, delivery, exploitation	dns, http, tls	2025-10-09
Klopatra	9	command and control	dns, tls, http	9	command and control	dns, tls, http	2025-10-08
LandUpdate808	12	command and control	dns, tls, http	607	actions on objectives, command and control, delivery	dns, http, tls	2025-10-10
Lumma	3	command and control, actions on objectives	dns, tls, http	6886	actions on objectives, command and control, delivery, installation	dns, http, tls	2025-10-07
Malicious DGA Domain	2	command and control	http, tls	211	command and control	http, tls	2025-10-08
NetSupport RAT	4	command and control	http	161	actions on objectives, command and control, exploitation, installation	dns, http, tls	2025-10-08
RAT Generic	3	command and control	tcp	312	actions on objectives, command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls, udp	2025-10-11
ReverseLoader	2	delivery	http	16	command and control, delivery, installation	dns, http, tls	2025-10-09
SocGholish	6	command and control	dns, tls, http	1815	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2025-10-09
Trojan Agent	1	command and control	http	611	actions on objectives, command and control, delivery, installation	dns, http, ip, smtp, tcp, tcp-pkt, tcp-stream, tls, udp	2025-10-08
Unknown APT	9	delivery, command and control	dns, tls, http	1226	command and control, delivery	dns, http, tcp, tls	2025-10-08
XWorm	8	command and control	tcp-pkt	4061	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2025-10-07

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