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: 1307

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 (TINYSHELL, Reverse Shell - Unix)
• Major changes to detections(s) [2]: 274
• Updated threat detection(s) [3]: 279

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:

TINYSHELL (Backdoor)

TINYSHELL is a lightweight backdoor written in C with commands for file upload, download, and remote shell sessions. A basic FreeBSD implementation may be modified for customized backdoors.

TINYSHELL - Malpedia |

• Total number of detection methods: 4
• Kill chain phase(s): command and control
• MITRE ATT&CK: T1071

Reverse Shell - Unix (Reverse Shell)

Adversaries exploit command and script interpreters in various platforms to execute commands, scripts, and binaries, utilizing built-in interfaces like Unix Shell, Windows Command Shell, and PowerShell. Provides ways of interacting with systems.

• Total number of detection methods: 1
• Kill chain phase(s): actions on objectives

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):

APT35 (APT)

Iranian-backed group Magic Hound engages in cyber espionage targeting U.S. and Middle Eastern officials and organizations since 2014, likely working with the Islamic Revolutionary Guard Corps through elaborate social engineering tactics

• Added kill chain phase(s): command and control
• Previously supported kill chain phase(s): command and control, delivery
• MITRE ATT&CK added: T1102, T1071
• Previously existing MITRE ATT&CK: T1041, T1071, T1587, T1566, T1583, T1665, T1102
• Methods added: 18

Amadey (Data Theft)

Amadey is a trojan that cyber criminals can buy on a Russian dark web forum to perform malicious activities like stealing personal information, installing malware, and adding computers to a botnet.

• 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

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: 31

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: 72

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: 4

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: 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: 3

TA455 (APT)

Meta took action against a hacking group from Iran that targeted various industries worldwide. The group's tactics resembled another threat actor, but with different targets, infrastructure, and malware.

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

Trojan Agent (Trojan)

A group of trojans with variable payloads can redirect web traffic, manipulate applications, drop/install malicious programs, and download/run additional malware. Behavior is not exhaustive.

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

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: 123

Other Threat Detection Update(s)

The following threat detection(s) were improved this past week with new or updated threat methods.

Note: to see this table as a web page, please visit this webpage >>

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