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: 1372

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]: 4 (Aurotun Stealer, TA829, ShadowByte, MonsterV2)
Major changes to detections(s) [2]: 140
Updated threat detection(s) [3]: 150

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:

TA829 (APT)

Sophisticated adversary uses cyber, physical, and deception tactics to gain access to systems, exfiltrate data, disrupt operations, and maintain persistence over an extended period despite defenders' efforts to resist.

Total number of detection methods: 7
Kill chain phase(s): command and control, installation

ShadowByte (Botnet)

Advanced botnet infrastructure created with C++ for victim-side and web languages for attacker-side, allowing seamless communication between infected machines and command server.

Total number of detection methods: 2
Kill chain phase(s): command and control
MITRE ATT&CK: T1071

MonsterV2 (Data Theft)

MonsterV2 is a multifunctional malware that steals various data such as browser info and cryptocurrency credentials, and also acts as a loader for other malware variants like StealC and Rhadamanthys.

Cybersight Malware Samples - MonsterV2 |

Total number of detection methods: 1
Kill chain phase(s): command and control
MITRE ATT&CK: T1001

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):

ClickFix (Phishing)

In April 2024, researchers found compromised sites leading to an iframe on pley[.]es showing an error message. The payload domain was taken offline, preventing infection. Later, the iframe was replaced with the ClearFake inject.

Added kill chain phase(s): delivery
Previously supported kill chain phase(s): exploitation, delivery, command and control
MITRE ATT&CK added: T1189
Previously existing MITRE ATT&CK: T1071, T1027, T1189, T1102, T1036, T1105
Methods added: 3

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
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1071, T1587, T1573, T1566, T1486, T1496
Methods added: 8

Expiro (Trojan)

Expiro is a polymorphic file infector that inserts unique viral code into each infected file while maintaining the same malicious function. It can inject code into web pages and steal login credentials.

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, T1041
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: 30

Interlock Ransomware (Ransomware)

Interlock ransomware, discovered in 2024, engages in Big Game Hunting and double extortion but doesn't operate as a Ransomware-as-a-Service group. Data Leak Site "Worldwide Secrets Blog" negotiates ransom prices with victims.

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: 18

JanelaRAT (RAT)

JanelaRAT is a threat that uses various tactics like DLL side-loading and a multi-stage attack, targeting Latin American fintech companies.

Added kill chain phase(s): installation
Previously supported kill chain phase(s): command and control, actions on objectives, delivery
Methods added: 1

Keitaro (Phishing)

Cyber criminals exploited the TDS platform Keitaro to redirect users to malware exploit kits RIG and Fallout, infecting them with malicious software. Legitimate TDS platforms are used for targeted advertising.

Added kill chain phase(s): exploitation
Previously supported kill chain phase(s): exploitation, delivery, command and control
MITRE ATT&CK added: T1189
Previously existing MITRE ATT&CK: T1189, T1071
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: 9

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: 36

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: 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: 3

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: 21

SvcStealer (Data Theft)

SvcStealer 2025 is an information stealer malware spread through spear phishing emails. It collects sensitive data like machine information, user credentials, and cryptocurrency wallets, sending it to a command-and-control server.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, actions on objectives
MITRE ATT&CK added: T1071, T1041
Previously existing MITRE ATT&CK: T1567
Methods added: 3

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
ClickFix	3	delivery	dns, tls, http	194	command and control, delivery, exploitation	dns, http, tls	2025-06-11
Command and Control	8	command and control	dns, tls, icmp, http	560	actions on objectives, command and control, delivery, installation	dns, http, icmp, tcp, tcp-pkt, tls	2025-06-11
Expiro	1	command and control	http	34	command and control	dns, http, tls	2025-06-11
Fake Browser	30	exploitation	dns, tls, http	1681	command and control, delivery, exploitation	dns, http, tls	2025-06-13
Interlock Ransomware	18	command and control	dns, tls, http	28	command and control	dns, http, tcp, tls	2025-06-12
JanelaRAT	1	installation	http	4	actions on objectives, command and control, delivery, installation	http	2025-06-11
Keitaro	6	exploitation	dns, tls, http	399	command and control, delivery, exploitation	dns, http, tls	2025-06-12
LandUpdate808	9	command and control	dns, tls, http	492	command and control, delivery	dns, http, tls	2025-06-13
Lumma	36	command and control, actions on objectives	dns, tls, http	6102	actions on objectives, command and control, delivery, installation	dns, http, tls	2025-06-13
MonsterV2	1	command and control	tcp-pkt	1	command and control	tcp-pkt	2025-06-11
NetSupport RAT	1	command and control	http	115	actions on objectives, command and control, exploitation, installation	dns, http, tls	2025-06-13
RAT Generic	3	command and control	tcp	279	actions on objectives, command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls, udp	2025-06-13
ShadowByte	2	command and control	http	2	command and control	http	2025-06-11
SocGholish	21	command and control	dns, tls, http	1541	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2025-06-13
SvcStealer	3	command and control	http, tcp-pkt	5	actions on objectives, command and control	http, tcp-pkt	2025-06-10
TA829	7	command and control, installation	http	7	command and control, installation	http	2025-06-11

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