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: 1198

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 (Pygmy Goat, TLS Expired certificate)
Major changes to detections(s) [2]: 236
Updated threat detection(s) [3]: 238

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:

Pygmy Goat (Backdoor)

Pygmy Goat is a backdoor access malware found on Sophos XG firewall devices, granting unauthorized access to the system.

Total number of detection methods: 2
Kill chain phase(s): command and control

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):

Agrius (APT)

Iranian-linked APT group Agonizing Serpens targets Israeli organizations with destructive wiper and fake-ransomware attacks since 2020. Known for hitting tech and higher ed sectors.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): actions on objectives
Methods added: 10

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

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: 99

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

Pingback (Trojan)

'Pingback' is a relatively uncommon malware that uses ICMP. Trustwave uncovered its protocols and provided sample code on how to interact with it. Full details on Trustwave's blog.

Added kill chain phase(s): actions on objectives
Previously supported kill chain phase(s): actions on objectives
Methods added: 1

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

Remcos (RAT)

Remcos is a closed-source remote control and surveillance tool marketed by Breaking Security. It has been detected in malware campaigns.

Added kill chain phase(s): delivery
Previously supported kill chain phase(s): command and control, delivery
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: T1027, T1189, T1071
Methods added: 3

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: 10

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
Methods added: 27

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: 48

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
Agrius	10	command and control	dns, tls, http	14	actions on objectives, command and control	dns, http, tls	2024-11-07
Fake Browser	24	exploitation	dns, tls, http	1103	command and control, delivery, exploitation	dns, http, tls	2024-11-09
LandUpdate808	6	command and control	dns, tls, http	38	command and control, delivery	dns, http, tls	2024-11-07
Lumma	99	command and control, actions on objectives	dns, tls, http	2549	actions on objectives, command and control, delivery, installation	dns, http, tls	2024-11-09
NetSupport RAT	2	command and control	http	59	actions on objectives, command and control, exploitation, installation	dns, http, tls	2024-11-05
Pingback	1	actions on objectives	icmp	6	actions on objectives	icmp	2024-11-07
Pygmy Goat	2	command and control	ssh	2	command and control	ssh	2024-11-07
RAT Generic	4	command and control	tcp	166	actions on objectives, command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls, udp	2024-11-05
Remcos	2	delivery	http	920	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2024-11-07
SocGholish	3	command and control	dns, tls, http	1063	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2024-11-05
TA4903	10	delivery	dns, tls, http	1205	delivery	dns, http, tls	2024-11-05
TA582	27	command and control	dns, http, tls	393	command and control	dns, http, tls	2024-11-09
XWorm	48	command and control	tcp-pkt	1756	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2024-11-09

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