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: 1635

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]: 1 (Dean Edwards packer)
Major changes to detections(s) [2]: 505
Updated threat detection(s) [3]: 506

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:

Dean Edwards packer (Trojan)

The Dean Edwards packer is a JavaScript compression tool used for web development but also exploited by cybercriminals to hide malicious code. It transforms code into an obfuscated format.

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):

APT-C-23 (APT)

APT-C-23 group uses Windows and Android components in operations. Android components were first described in 2017, and multiple analyses of their mobile malware were published in the same year.

Added kill chain phase(s): command and control, delivery, actions on objectives
Previously supported kill chain phase(s): command and control, actions on objectives
MITRE ATT&CK added: T1573, T1041, T1082
Previously existing MITRE ATT&CK: T1583, T1071
Methods added: 11

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, command and control
Previously supported kill chain phase(s): exploitation, delivery, command and control, installation
MITRE ATT&CK added: T1071, T1189
Previously existing MITRE ATT&CK: T1071, T1027, T1189, T1105, T1102, T1566, T1036
Methods added: 187

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: 6

Fake Service (Phishing)

Phishing involves scammers posing as familiar companies to obtain personal information. Consumers should avoid responding to suspicious emails requesting personal or financial details to prevent falling victim to these scams.

Added kill chain phase(s): delivery
Previously supported kill chain phase(s): command and control, installation, delivery, actions on objectives
Methods added: 3

Kimsuky (APT)

Kimsuky, a North Korean threat group since 2013, targets think tanks and nuclear-related entities. Recently expanded to US, Russia, Europe; known for Korea Hydro & Nuclear Power Co. compromise.

Added kill chain phase(s): command and control, delivery
Previously supported kill chain phase(s): command and control, actions on objectives, delivery
MITRE ATT&CK added: T1041, T1071
Previously existing MITRE ATT&CK: T1041, T1071, T1105
Methods added: 2

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, exploitation, actions on objectives
MITRE ATT&CK added: T1189
Previously existing MITRE ATT&CK: T1189, T1105, T1071
Methods added: 26

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, T1105
Methods added: 129

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: 3

Parallax (RAT)

Parallax is a RAT used by attackers in "coronamalware" campaigns to access victim's machines. Attackers exploited COVID-19 news to trick victims into opening themed emails spreading Parallax.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control
MITRE ATT&CK added: T1095
Methods added: 11

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: 26

Stealc (Data Theft)

Stealc, introduced by actor Plymouth on underground forums, written in C, can steal data from web browsers, crypto wallets, email clients, and messaging apps, built on Vidar, Raccoon, Mars, and RedLine.

Added kill chain phase(s): delivery, command and control
Previously supported kill chain phase(s): command and control, exploitation, delivery
Methods added: 19

TeamPCP (Trojan)

TeamPCP has attacked LiteLLM, an open-source Python library and proxy server, commonly used in cloud environments. This could have a significant impact due to its widespread presence.

Added kill chain phase(s): command and control, actions on objectives
Previously supported kill chain phase(s): command and control, delivery
MITRE ATT&CK added: T1041, T1071
Previously existing MITRE ATT&CK: T1071, T1105
Methods added: 6

TransparentTribe (APT)

Group targeting Indian Army and related assets in India, as well as activists and civil society in Pakistan, attributed to a Pakistani connection by TrendMicro and others.

Added kill chain phase(s): command and control, installation
Previously supported kill chain phase(s): delivery, command and control
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1071, T1041, T1105
Methods added: 10

Trojan Downloader (Downloader)

Trojan downloaders are malicious software that look legitimate, but can harm your computer by downloading files, often without user consent, to steal, damage, or disrupt your devices.

Added kill chain phase(s): delivery
Previously supported kill chain phase(s): command and control, delivery, actions on objectives, installation
Methods added: 9

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: 57

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
APT-C-23	11	command and control, delivery, actions on objectives	http, http1, dns, tls	774	actions on objectives, command and control, delivery	dns, http, http1, tls	2026-04-23
ClickFix	187	delivery, command and control	http, dns, tls	636	command and control, delivery, exploitation, installation	dns, http, tls	2026-04-25
Dean Edwards packer	1	exploitation	http	1	exploitation	http	2026-04-23
Fake Browser	6	exploitation	dns, tls, http	2011	command and control, delivery, exploitation	dns, http, tls	2026-04-28
Fake Service	3	delivery	dns, tls, http	194	actions on objectives, command and control, delivery, installation	dns, http, http1, tcp, tls	2026-04-21
Kimsuky	2	command and control, delivery	http	425	actions on objectives, command and control, delivery	dns, ftp, ftp-data, http, http1, tcp, tls	2026-04-23
LandUpdate808	26	command and control	dns, tls, http	952	actions on objectives, command and control, delivery, exploitation	dns, http, tls	2026-04-28
Lumma	129	command and control, actions on objectives	dns, tls, http	8059	actions on objectives, command and control, delivery, installation	dns, http, tls	2026-04-28
NetSupport RAT	3	command and control	http	219	actions on objectives, command and control, exploitation, installation	dns, http, tls	2026-04-24
Parallax	11	command and control	tcp-pkt, dns, tls, http	51	command and control	dns, http, tcp, tcp-pkt, tls	2026-04-22
SocGholish	26	command and control	dns, tls, http	2230	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2026-04-28
Stealc	19	delivery, command and control	http, dns, tls	68	command and control, delivery, exploitation	dns, http, http1, tls	2026-04-21
TeamPCP	6	command and control, actions on objectives	dns, tls, http, http1	15	actions on objectives, command and control, delivery	dns, http, http1, tls	2026-04-24
TransparentTribe	10	command and control, installation	dns, tls, http	70	command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls	2026-04-25
Trojan Downloader	9	delivery	dns, tls, http	462	actions on objectives, command and control, delivery, installation	dns, http, http1, tcp, tls, udp	2026-04-23
XWorm	57	command and control	tcp-pkt	5100	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2026-04-28

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