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: 1289

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]: 272
Updated threat detection(s) [3]: 272

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):

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, command and control
Previously supported kill chain phase(s): command and control, delivery
MITRE ATT&CK added: T1566, T1665, T1102
Previously existing MITRE ATT&CK: T1041, T1071, T1587, T1566, T1583
Methods added: 21

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

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: 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
Methods added: 132

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

OilRig (APT)

OilRig, a suspected Iranian threat group, targets various industries in the Middle East since 2014. FireEye links group to Iranian government based on infrastructure details and targeting alignment.

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: T1587, T1071, T1041
Methods added: 3

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

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: 20

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: T1102
Previously existing MITRE ATT&CK: T1071, T1583
Methods added: 6

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: 6

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: 53

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
APT35	21	delivery, command and control	dns, tls, http	1564	command and control, delivery	dns, ftp, http, tcp, tls, udp	2025-02-27
Fake Browser	15	exploitation	dns, tls, http	1473	command and control, delivery, exploitation	dns, http, tls	2025-02-27
LandUpdate808	12	command and control	dns, tls, http	273	command and control, delivery	dns, http, tls	2025-02-28
Lumma	132	command and control, actions on objectives	dns, tls, http	4605	actions on objectives, command and control, delivery, installation	dns, http, tls	2025-02-28
NetSupport RAT	2	command and control	http	88	actions on objectives, command and control, exploitation, installation	dns, http, tls	2025-02-28
OilRig	3	command and control	dns, tls, http	76	actions on objectives, command and control, delivery	dns, http, tls, udp	2025-02-27
RAT Generic	2	command and control	tcp	224	actions on objectives, command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls, udp	2025-02-28
SocGholish	20	command and control	dns, tls, http	1319	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2025-02-28
TA455	6	command and control	dns, tls, http	551	command and control, installation	dns, http, tls	2025-02-27
TA4903	6	delivery	dns, tls, http	1276	delivery	dns, http, tls	2025-02-25
XWorm	53	command and control	tcp-pkt	2454	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2025-02-28

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