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: 1403

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]: 3 (Myth Stealer, Raton, SillyRAT)
Major changes to detections(s) [2]: 247
Updated threat detection(s) [3]: 281

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:

Myth Stealer (Data Theft)

Trellix researchers found undetected infostealer malware called Myth Stealer written in Rust on Telegram since December 2024, initially offered for free trial and then shifted to subscription-based model.

Total number of detection methods: 26
Kill chain phase(s): actions on objectives
MITRE ATT&CK: T1566, T1041

Raton (RAT)

Raton Access Tool (SillyRAT) is a powerful open-source RAT with various features for cybercriminals, posing a significant cybersecurity threat due to its adaptability and ease of use under a Malware-as-a-Service model.

Total number of detection methods: 1
Kill chain phase(s): command and control
MITRE ATT&CK: T1071

SillyRAT (RAT)

SillyRAT is a cross platform RAT written in Python that can act as a server or client. Use the generate command with pyinstaller to compile the payload for your platform. Source file available.

Total number of detection methods: 7
Kill chain phase(s): command and control, actions on objectives
MITRE ATT&CK: T1095

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):

Bitter (APT)

China's APT17 is a threat group targeting U.S. government entities, defense industry, law firms, IT companies, mining companies, and NGOs with network intrusions.

Added kill chain phase(s): command and control, actions on objectives
Previously supported kill chain phase(s): command and control, delivery, actions on objectives
MITRE ATT&CK added: T1041
Previously existing MITRE ATT&CK: T1041, T1071
Methods added: 10

Botnet Generic (Botnet)

A botnet is a network of compromised devices controlled by a central server to carry out cyber attacks, steal data, send spam, and grant unauthorized access to devices.

Added kill chain phase(s): 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: T1071
Methods added: 2

Command and Control (Generic CnC)

Adversaries may use custom command and control protocols to communicate, mimicking or developing protocols on top of standard network stacks, instead of using existing Standard Application Layer Protocols.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, actions on objectives, delivery, installation
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: 15

Generic Phishing (Phishing)

Phishing involves pretending to be a trusted entity to steal personal information through fake websites or messages, often targeting users of social media, banks, and online platforms.

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: T1566, T1071
Methods added: 2

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: 6

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: 100

Molerats (APT)

The politically-motivated threat group Molerats has been active since 2012 targeting victims in the Middle East, Europe, and the US according to reports by MITRE.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, delivery
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1041, T1590, T1071, T1587, T1102
Methods added: 5

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: 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: 29

Strela Stealer (Data Theft)

StrelaStealer is a type of malware that steals email account credentials, targeting Spanish-speaking users through spam emails. Discovered in November 2022 by DCSO CyTec researchers.

Added kill chain phase(s): 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: T1071
Methods added: 9

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

TA456 (APT)

Proofpoint researchers discovered a long-term social engineering and targeted malware campaign by TA456, an Iranian state-aligned threat actor. The attacker used a fake social media persona to send malware to an aerospace defense contractor's employee.

Added kill chain phase(s): delivery, actions on objectives
Previously supported kill chain phase(s): delivery, command and control
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1071, T1041, T1102
Methods added: 2

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: 9

Trojan clipper (Trojan)

Trojan.Clipper is a type of Trojan malware that targets Windows systems to steal or manipulate currency data by taking advantage of the Windows clipboard.

Added kill chain phase(s): delivery
Previously supported kill chain phase(s): exploitation, command and control, delivery
MITRE ATT&CK added: T1041
Previously existing MITRE ATT&CK: T1071, T1041
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): command and control
Previously supported kill chain phase(s): command and control, delivery
Methods added: 6

Voldemort (Backdoor)

In August 2024, Proofpoint discovered a sophisticated espionage campaign using custom malware named "Voldemort". The threat actor utilizes unique attack methods and command control through platforms like Google Sheets.

Added kill chain phase(s): actions on objectives
Previously supported kill chain phase(s): actions on objectives
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1071
Methods added: 1

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: 40

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
Bitter	10	command and control, actions on objectives	dns, http, tls	83	actions on objectives, command and control, delivery	dns, http, tcp, tcp-pkt, tls	2025-07-17
Botnet Generic	2	command and control	http	33	actions on objectives, command and control, delivery	dns, http, tcp, tcp-pkt, tls	2025-07-17
Command and Control	1	command and control	http	561	actions on objectives, command and control, delivery, installation	dns, http, icmp, tcp, tcp-pkt, tls	2025-07-17
Fake Browser	15	exploitation	dns, tls, http	1715	command and control, delivery, exploitation	dns, http, tls	2025-07-19
Generic Phishing	2	command and control	http	65	command and control, delivery	dns, http, tls	2025-07-17
LandUpdate808	6	command and control	dns, tls, http	507	command and control, delivery	dns, http, tls	2025-07-16
Lumma	100	command and control, actions on objectives	dns, tls, http	6387	actions on objectives, command and control, delivery, installation	dns, http, tls	2025-07-19
Molerats	5	command and control	dns, tls, http	300	command and control, delivery	dns, http, tcp, tls	2025-07-18
MuddyWater	6	command and control	dns, tls, http	64	actions on objectives, command and control, delivery	dns, http, tcp, tls	2025-07-16
Myth Stealer	26	actions on objectives	dns, tls, http	26	actions on objectives	dns, tls, http	2025-07-17
Raton	1	command and control	tls	1	command and control	tls	2025-07-17
SillyRAT	7	command and control, actions on objectives	tcp	7	command and control, actions on objectives	tcp	2025-07-17
SocGholish	29	command and control	dns, tls, http	1630	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2025-07-19
Strela Stealer	9	command and control	dns, tls, http	14	actions on objectives, command and control, delivery	dns, http, tls	2025-07-17
TA2726	3	command and control	dns, tls, http	115	command and control	dns, http, tls	2025-07-19
TA456	2	delivery, actions on objectives	http	131	actions on objectives, command and control, delivery	dns, http, tls	2025-07-19
TA4903	9	delivery	dns, tls, http	2408	delivery	dns, http, tls	2025-07-19
Trojan clipper	1	delivery	http	21	command and control, delivery, exploitation	dns, http, tls	2025-07-17
Unknown APT	6	command and control	dns, tls, http	735	command and control, delivery	dns, http, tcp, tls	2025-07-16
Voldemort	1	actions on objectives	http	2	actions on objectives	http	2025-07-16
XWorm	40	command and control	tcp-pkt	3623	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2025-07-19

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