Thursday, June 13, 2024

Storm-0324 Abusing Microsoft Teams To Gain Initial Access And Deploy Ransomware

Storm-0324, a financially driven threat actor group, was detected delivering phishing messages using Microsoft Teams.

In the past, it has been accused of disseminating phishing emails to employ remote code execution to acquire initial access to infected systems.

After establishing the access, Storm-0324 often gives access to TA543 and the well-known ransomware group Sangria Tempest (also known as FIN7, Carbon Spider), which regularly utilizes that access to carry out ransomware attacks.

Trellix stated that the most recent iteration of the delivery technique targets professionals who use Teams IM as their primary chat box, which has enabled EXTERNAL user communication with certain luring phishing messages along with attachments that result in a ransom attack on the associated devices in the network.

Document
FREE Demo

Deploy Advanced AI-Powered Email Security Solution

Implementing AI-Powered Email security solutions “Trustifi” can secure your business from today’s most dangerous email threats, such as Email Tracking, Blocking, Modifying, Phishing, Account Take Over, Business Email Compromise, Malware & Ransomware

The Infection Chain of JSSLoader – Storm-0324

During the phishing email period, Storm-0324 frequently sent phishing emails with invoicing themes like DocuSign, Quickbooks, and so on. 

The user would then be sent to the SharePoint site, where the compressed WSF (Windows Script File)/JS delivers a malicious .Net payload JSSLoader. The threat actor has thus far employed a variety of file formats, including Windows Script Files (WSF), Microsoft Office Documents, and VBS.

“The threat actors Sangria Tempest and Storm-0324 previously had been associated with the distribution of the Gozi InfoStealer, Nymaim downloader, and locker, and now Storm-0324 is distributing the JSSLoader before passing the buck to other ransomware groups”, researchers said.

The FIN7/Sagrid threat actor created JSSLoader, a very sophisticated backdoor that has the following features:

  • Anti-analysis
  • Exfiltration
  • Remote code execution
  • Persistence

The payload creates a unique ID of the target based on the serial number, domain name, and computer name to track down the victim or target.

As a RAT (remote access trojan), the malware gathers the victim data listed to prepare for the next stage of execution:

  • Logical drivers
  • Hostname
  • Username
  • Domain name
  • System Info (desktop file list, running process, installed application, PCinfo)
  • IP info
Victim Information Gathered
Victim Information Gathered

Since 2019, JSSLoader has constantly changed, and this threat’s distribution mode has evolved. Researchers say these features a new approach to Teams-based phishing attacks using GitHub scripts, which leads to script kiddies getting their hands dirty.

Hence, with the creation of JSSLoader in C++, it was possible to avoid detection and complicated analysis.

Protect yourself from vulnerabilities using Patch Manager Plus to patch over 850 third-party applications quickly. Take advantage of the free trial to ensure 100% security.

Website

Latest articles

Ivanti EPM SQL Injection Flaw Let Attackers Execute Remote Code

In May 24, 2024, Zero-Day Initiative released a security advisory for Ivanti EPM which...

CISA Warns of Scammers Impersonating as CISA Employees

The Cybersecurity and Infrastructure Security Agency (CISA) has issued a warning about a surge...

Microsoft Windows Ntqueryinformationtoken Flaw Let Attackers Escalate Privileges

Microsoft has disclosed a critical vulnerability identified as CVE-2024-30088.With a CVSS score of 8.8, this flaw affects Microsoft...

256,000+ Publicly Exposed Windows Servers Vulnerable to MSMQ RCE Flaw

Cybersecurity watchdog Shadowserver has identified 256,000+ publicly exposed servers vulnerable to a critical Remote...

Indian National Jailed For Hacked Servers Of Company That Fired Him

An Indian national was sentenced to two years and eight months in jail for...

JetBrains Warns of GitHub Plugin that Exposes Access Tokens

A critical vulnerability (CVE-2024-37051) in the JetBrains GitHub plugin for IntelliJ-based IDEs (2023.1 and...

Critical Flaw In Apple Ecosystems Let Attackers Gain Unauthorized Access

Hackers go for Apple due to its massive user base along with rich customers,...
Guru baran
Guru baranhttps://gbhackers.com
Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

Free Webinar

API Vulnerability Scanning

71% of the internet traffic comes from APIs so APIs have become soft targets for hackers.Securing APIs is a simple workflow provided you find API specific vulnerabilities and protect them.In the upcoming webinar, join Vivek Gopalan, VP of Products at Indusface as he takes you through the fundamentals of API vulnerability scanning..
Key takeaways include:

  • Scan API endpoints for OWASP API Top 10 vulnerabilities
  • Perform API penetration testing for business logic vulnerabilities
  • Prioritize the most critical vulnerabilities with AcuRisQ
  • Workflow automation for this entire process

Related Articles