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: 1210

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 - FTP, Brute Force Attack Outbound)
Major changes to detections(s) [2]: 291
Updated threat detection(s) [3]: 292

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 Stamus Security Platform (SSP) this past week:

Brute Force Attack Outbound (Lateral Movement)

Lateral Movement involves using various techniques to navigate through a network and gain access to remote systems. Brute force attacks outbound can indicate compromise or malicious insider behavior.

Total number of detection methods: 1
Kill chain phase(s): exploitation

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): command and control
Previously supported kill chain phase(s): command and control, delivery
Methods added: 38

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: T1189
Methods added: 24

Gelsemium (APT)

ESET researchers connect Gelsemium group to NoxPlayer supply-chain attack on gamers, traced back to 2014 with malicious tools found in Operation TooHash cyber-espionage campaign by G DATA.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control
MITRE ATT&CK added: T1037
Previously existing MITRE ATT&CK: T1587
Methods added: 6

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: 21

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: 84

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: T1587, T1105
Methods added: 2

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: 4

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: T1027, T1189, T1071
Methods added: 9

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): actions on objectives
Methods added: 1

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

TA582 (APT)

An APT is a stealthy threat actor, often nation state or state-sponsored, gaining unauthorized access and remaining undetected in a network for political or economic reasons, targeting various sectors.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1071
Methods added: 41

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: T1573
Methods added: 30

Zebrocy (Trojan)

Zebrocy is a versatile Trojan used by APT28 since 2015, with variants in multiple programming languages like C++, Delphi, and C#. It is detailed on MITRE.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, delivery, actions on objectives
Methods added: 28

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	38	command and control	dns, tls, http	1138	command and control, delivery	dns, ftp, http, tcp, tls, udp	2024-11-22
Brute Force Attack Outbound	1	exploitation	ftp	1	exploitation	ftp	2024-11-22
Fake Browser	24	exploitation	dns, tls, http	1142	command and control, delivery, exploitation	dns, http, tls	2024-11-23
Gelsemium	6	command and control	dns, http, tls	20	command and control	dns, http, tls	2024-11-22
LandUpdate808	21	command and control	dns, tls, http	62	command and control, delivery	dns, http, tls	2024-11-22
Lumma	84	command and control, actions on objectives	dns, tls, http	2808	actions on objectives, command and control, delivery, installation	dns, http, tls	2024-11-22
NetSupport RAT	2	command and control	http	63	actions on objectives, command and control, exploitation, installation	dns, http, tls	2024-11-21
RAT Generic	4	command and control	tcp	171	actions on objectives, command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls, udp	2024-11-20
SocGholish	9	command and control	dns, tls, http	1076	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2024-11-22
Strela Stealer	1	command and control	http	3	actions on objectives, command and control	http	2024-11-20
TA4903	3	delivery	dns, tls, http	1211	delivery	dns, http, tls	2024-11-19
TA582	41	command and control	http, dns, tls	461	command and control	dns, http, tls	2024-11-23
XWorm	30	command and control	tcp-pkt	1874	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2024-11-19
Zebrocy	28	command and control	http, dns, tls	60	actions on objectives, command and control, delivery	dns, http, tls	2024-11-22

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