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: 1335

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 (VIP Recovery Keylogger, Trox Stealer, BRICKSTORM, SNOWLIGHT)
Major changes to detections(s) [2]: 271
Updated threat detection(s) [3]: 282

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:

VIP Recovery Keylogger (Data Theft)

HP Sure Click detected campaigns spreading malware using similar techniques and loaders to infect PCs. Attackers hid malicious code in images on archive.org to bypass network security measures.

VIP Recovery Keylogger - AnyRun | VIP Recovery Keylogger - JOESandbox |

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

Trox Stealer (Data Theft)

TROX is malware designed to steal sensitive information, including credit card details and cryptowallets. It is offered as Malware-as-a-Service and has been used in attacks against large entities.

Trox Stealer - Sublime Security |

Total number of detection methods: 7
Kill chain phase(s): actions on objectives
MITRE ATT&CK: T1041

BRICKSTORM (Backdoor)

BRICKSTORM provides attackers file manager and network tunneling capabilities, different from Mandiant’s report. Windows samples lack command execution abilities but use network tunneling and valid credentials for similar results.

Total number of detection methods: 1
Kill chain phase(s): command and control
MITRE ATT&CK: T1041

SNOWLIGHT (Downloader)

Chinese threat actor UNC5174 has launched a new campaign using SNOWLIGHT malware to drop VShell RAT on Linux systems. Access method unknown. Detected by Sysdig in January 2025.

SNOWLIGHT - Sysdig |

Total number of detection methods: 1
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):

AMOS (Data Theft)

Atomic macOS Stealer targets various information on victim's machine, including keychain passwords, system info, and browser data. It can extract auto-fills, passwords, cookies, wallets, and credit card info.

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: T1071
Methods added: 1

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: 12

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: 19

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: 27

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: 65

Malicious DGA Domain (Generic CnC)

Malicious domains are used by threat actors for malware spreading and phishing. C2 servers are established worldwide to evade detection. DGA generates domain names for command and control, challenging security professionals. Stamus Networks offers specialized detection methods.

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

Molerats (APT)

The politically-motivated threat group Molerats has been active since 2012 targeting victims in the Middle East, Europe, and the US according to reports by MITRE.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, delivery
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1041, T1590, T1071, T1587, T1102
Methods added: 7

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
MITRE ATT&CK added: T1041
Previously existing MITRE ATT&CK: T1071, T1587, T1041, T1567, T1102
Methods added: 15

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
Methods added: 18

TA399 (APT)

An APT is a sophisticated, long-term cyber-attack carried out by skilled threat actors with significant resources. Unlike short-lived attacks, APTs focus on sustained operation and specific objectives, often sponsored by nation-states or large criminal organizations.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control
MITRE ATT&CK added: T1041
Previously existing MITRE ATT&CK: T1071
Methods added: 21

Web Shell (Backdoor)

A web shell is a remote access interface for web servers often used in cyberattacks. It can be written in various programming languages and exploited through vulnerabilities in web applications.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): actions on objectives, delivery, command and control
MITRE ATT&CK added: T1059, T1505
Previously existing MITRE ATT&CK: T1505
Methods added: 2

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: 77

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
AMOS	1	command and control	http	58	actions on objectives, command and control, delivery	dns, http, tls	2025-04-24
BRICKSTORM	1	command and control	tls	1	command and control	tls	2025-04-21
ClickFix	12	delivery	dns, tls, http	153	command and control, delivery, exploitation	dns, http, tls	2025-04-25
Fake Browser	19	exploitation	dns, tls, http	1570	command and control, delivery, exploitation	dns, http, tls	2025-04-26
LandUpdate808	27	command and control	dns, tls, http	434	command and control, delivery	dns, http, tls	2025-04-26
Lumma	65	command and control, actions on objectives	dns, tls, http	5399	actions on objectives, command and control, delivery, installation	dns, http, tls	2025-04-25
Malicious DGA Domain	3	command and control	http, tls	209	command and control	http, tls	2025-04-24
Molerats	7	command and control	dns, tls, http	295	command and control, delivery	dns, http, tcp, tls	2025-04-24
Mustang Panda	15	command and control	dns, tls, http	139	command and control, delivery	dns, http, tcp, tls	2025-04-26
NetSupport RAT	1	command and control	http	104	actions on objectives, command and control, exploitation, installation	dns, http, tls	2025-04-22
RAT Generic	3	command and control	tcp	263	actions on objectives, command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls, udp	2025-04-26
SNOWLIGHT	1	command and control	http	1	command and control	http	2025-04-21
SocGholish	18	command and control	dns, tls, http	1422	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2025-04-26
TA399	21	command and control	dns, tls, http	39	command and control	dns, http, tls	2025-04-26
Trox Stealer	7	actions on objectives	dns, tls, http	7	actions on objectives	dns, tls, http	2025-04-21
VIP Recovery Keylogger	2	command and control, actions on objectives	http	2	command and control, actions on objectives	http	2025-04-21
Web Shell	2	command and control	http	16	actions on objectives, command and control, delivery	http	2025-04-26
XWorm	77	command and control	tcp-pkt	2967	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2025-04-26

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