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: 1408

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]: 299
Updated threat detection(s) [3]: 299

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):

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: 12

FormBook (Data Theft)

FormBook is a malware virus that steals personal data from victims' computers through malicious attachments in spam emails. It is distributed as a 'service' for aspiring cyber criminals to use.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control
Methods added: 3

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: 123

Mustang Panda (APT)

Mustang Panda is a China-based cyber threat actor observed since 2017, possibly operating since 2014. It targets government and non-government organizations in multiple countries like the U.S., Germany, and Myanmar.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, delivery
Methods added: 18

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: 3

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): delivery
Previously supported kill chain phase(s): actions on objectives, command and control, delivery, installation
MITRE ATT&CK added: T1105
Previously existing MITRE ATT&CK: T1071, T1027, T1041, T1105
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: 18

TA455 (APT)

Meta took action against a hacking group from Iran that targeted various industries worldwide. The group's tactics resembled another threat actor, but with different targets, infrastructure, and malware.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, installation
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1071, T1583, T1102
Methods added: 61

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

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: 24

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: 33

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	12	exploitation	dns, tls, http	1727	command and control, delivery, exploitation	dns, http, tls	2025-07-25
FormBook	3	command and control	dns, tls, http	16	command and control	dns, http, tls	2025-07-25
Lumma	123	command and control, actions on objectives	dns, tls, http	6510	actions on objectives, command and control, delivery, installation	dns, http, tls	2025-07-26
Mustang Panda	18	command and control	dns, tls, http	189	command and control, delivery	dns, http, tcp, tls	2025-07-26
NetSupport RAT	3	command and control	http	143	actions on objectives, command and control, exploitation, installation	dns, http, tls	2025-07-25
Powershell	1	delivery	http	59	actions on objectives, command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls	2025-07-25
SocGholish	18	command and control	dns, tls, http	1648	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2025-07-26
TA455	61	command and control	http, dns, tls	627	command and control, installation	dns, http, tls	2025-07-23
TA4903	3	delivery	dns, tls, http	2411	delivery	dns, http, tls	2025-07-22
Unknown APT	24	command and control	dns, tls, http	759	command and control, delivery	dns, http, tcp, tls	2025-07-25
XWorm	33	command and control	tcp-pkt	3656	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2025-07-24

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