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: 1446

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]: 5 (Quad7 Botnet, GhostRedirector, Betruger, PhantomStealer, Insecure legacy protocol - SMBv1)
Major changes to detections(s) [2]: 256
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 this past week:

Quad7 Botnet (Botnet)

Researchers discovered Quad7 botnet using TCP port 7777 on compromised devices for slow "bruteforce" attacks on Microsoft 365 accounts. Socks5 proxies are deployed for these attacks.

Total number of detection methods: 5
Kill chain phase(s): command and control
MITRE ATT&CK: T1041

GhostRedirector (APT)

ESET researchers discovered GhostRedirector targeting Windows servers with custom backdoor Rungan and IIS module Gamshen for SEO fraud, potentially damaging website reputation through association with shady techniques.

Total number of detection methods: 16
Kill chain phase(s): actions on objectives, command and control
MITRE ATT&CK: T1102

Betruger (Backdoor)

Symantec researchers discovered the Betruger malware, a multi-function backdoor likely designed for ransomware attacks. It has various capabilities, including keylogging, network scanning, and uploading files to a C2 server.

Total number of detection methods: 3
Kill chain phase(s): command and control
MITRE ATT&CK: T1041

PhantomStealer (Data Theft)

Proofpoint researchers discovered a rise in Stealerium-based malware campaigns, including those by cybercriminal actors TA2715 and TA2536 in May 2025. Multiple campaigns using different methods were identified through August 2025.

Total number of detection methods: 3
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):

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: T1041
Previously existing MITRE ATT&CK: T1071, T1587, T1573, T1566, T1486, T1496
Methods added: 3

Doina Loader (Loader)

Loaders are remote access Trojans allowing attackers to control compromised computers. These often lightweight to avoid detection by security technology, some now include advanced features like UI and self-healing capabilities.

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

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): delivery, command and control
Previously supported kill chain phase(s): command and control, actions on objectives, delivery
MITRE ATT&CK added: T1105
Previously existing MITRE ATT&CK: T1041, T1071, T1105
Methods added: 4

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, actions on objectives
Previously supported kill chain phase(s): delivery, command and control
MITRE ATT&CK added: T1189, T1105, T1071
Previously existing MITRE ATT&CK: T1189
Methods added: 16

LimeRat (RAT)

LimeRat is a dangerous open source malware that can function as ransomware, a cryptocurrency miner, information stealer, keylogger, and worm, compromising computer security.

Added kill chain phase(s): actions on objectives
Previously supported kill chain phase(s): command and control
MITRE ATT&CK added: T1071
Methods added: 1

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): delivery, command and control, actions on objectives
Previously supported kill chain phase(s): actions on objectives, command and control, installation, delivery
MITRE ATT&CK added: T1105, T1071
Previously existing MITRE ATT&CK: T1005, T1071, T1573
Methods added: 68

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

Oyster (Backdoor)

Oyster is a new loader and backdoor first seen in September 2023. It comprises two executables: Oyster Installer and Oyster Main, used by former WIZARD SPIDER affiliates.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control
MITRE ATT&CK added: T1189
Previously existing MITRE ATT&CK: T1071
Methods added: 42

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: 5

Rhadamanthys (Data Theft)

Rhadamanthys is a malware designed to steal data from infected machines.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): delivery, command and control, actions on objectivesMITRE ATT&CK added: T1041
Previously existing
MITRE ATT&CK: T1071
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: 15

Stealer and Exfiltration (Data Theft)

Info stealers gather sensitive data on infected computers to send to attackers, typically targeting online banking, social media, email, and FTP accounts. They use various methods including hooking browsers and keylogging.

Added kill chain phase(s): actions on objectives
Previously supported kill chain phase(s): actions on objectives, command and control, installation, delivery, exploitation
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1071, T1005, T1041, T1567, T1486, T1587, T1496
Methods added: 1

TA425 (APT)

Proofpoint has identified an Indian APT actor known as TA425.

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: 13

TinyNuke (Data Theft)

TinyNuke (Nuclear Bot) is a banking trojan sold on underground marketplaces for $2500 in 2016, functioning like ZeuS to steal passwords. Its author later destroyed reputation by aggressive promotion.

Added kill chain phase(s): command and control, actions on objectives
Previously supported kill chain phase(s): delivery, command and control
MITRE ATT&CK added: T1071
Previously existing MITRE ATT&CK: T1071, T1041, T1486
Methods added: 2

Unknown APT (APT)

Sophisticated adversary with expertise and resources uses multiple attack vectors to establish presence in organizations' IT infrastructure, exfiltrate information, undermine missions, and persistently adapt to defenders.

Added kill chain phase(s): command and control
Previously supported kill chain phase(s): command and control, delivery
MITRE ATT&CK added: T1071, T1041
Previously existing MITRE ATT&CK: T1041, T1071, T1001, T1566, T1102
Methods added: 10

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: 64

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
Betruger	3	command and control	dns, tls, http	3	command and control	dns, tls, http	2025-09-12
Command and Control	3	command and control	tls, dns, http	601	actions on objectives, command and control, delivery, installation	dns, http, icmp, tcp, tcp-pkt, tls	2025-09-09
Doina Loader	3	command and control, delivery	http	13	command and control, delivery	dns, http, tls	2025-09-12
Fake Service	3	delivery	http	166	actions on objectives, command and control, delivery, installation	dns, http, tcp, tls	2025-09-12
GhostRedirector	16	actions on objectives, command and control	http, dns, tls	16	actions on objectives, command and control	http, dns, tls	2025-09-12
Kimsuky	4	delivery, command and control	http, dns, tls	400	actions on objectives, command and control, delivery	dns, ftp, ftp-data, http, tcp, tls	2025-09-09
LandUpdate808	16	command and control, actions on objectives	dns, tls, http	572	actions on objectives, command and control, delivery	dns, http, tls	2025-09-12
LimeRat	1	actions on objectives	http	5	actions on objectives, command and control	dns, http, tcp, tls	2025-09-10
Lumma	68	delivery, command and control, actions on objectives	http, dns, tls	6835	actions on objectives, command and control, delivery, installation	dns, http, tls	2025-09-12
NetSupport RAT	3	command and control	http	151	actions on objectives, command and control, exploitation, installation	dns, http, tls	2025-09-11
Oyster	42	command and control	dns, tls, http	73	command and control	dns, http, tls	2025-09-13
PhantomStealer	3	command and control	dns, tls, http	3	command and control	dns, tls, http	2025-09-12
Quad7 Botnet	4	command and control	http, tcp	5	command and control	http, tcp	2025-09-12
RAT Generic	5	command and control	tcp	304	actions on objectives, command and control, delivery, installation	dns, http, tcp, tcp-pkt, tls, udp	2025-09-13
Rhadamanthys	3	command and control	dns, tls, http	10	actions on objectives, command and control, delivery	dns, http, tls	2025-09-09
SocGholish	15	command and control	dns, tls, http	1770	actions on objectives, command and control, delivery, exploitation, reconnaissance	dns, http, tcp, tcp-pkt, tls	2025-09-12
Stealer and Exfiltration	1	actions on objectives	http	467	actions on objectives, command and control, delivery, exploitation, installation	dns, ftp, http, smtp, tcp, tcp-pkt, tls	2025-09-09
TA425	13	command and control	dns, tls, http	19	command and control	dns, http, tls	2025-09-11
TinyNuke	2	command and control, actions on objectives	http	14	actions on objectives, command and control, delivery	http, tcp, tls	2025-09-11
Unknown APT	10	command and control	http, dns, tls	1172	command and control, delivery	dns, http, tcp, tls	2025-09-12
XWorm	64	command and control	tcp-pkt	3984	command and control, delivery	dns, http, tcp, tcp-pkt, tls	2025-09-13

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