• Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
MUST READ

Microsoft Patch Tuesday security updates for July 2025 fixed a zero-day

 | 

Italian police arrested a Chinese national suspected of cyberespionage on a U.S. warrant

 | 

U.S. CISA adds MRLG, PHPMailer, Rails Ruby on Rails, and Synacor Zimbra Collaboration Suite flaws to its Known Exploited Vulnerabilities catalog

 | 

IT Worker arrested for selling access in $100M PIX cyber heist

 | 

New Batavia spyware targets Russian industrial enterprises

 | 

Taiwan flags security risks in popular Chinese apps after official probe

 | 

U.S. CISA adds Google Chromium V8 flaw to its Known Exploited Vulnerabilities catalog

 | 

Hunters International ransomware gang shuts down and offers free decryption keys to all victims

 | 

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 52

 | 

Security Affairs newsletter Round 531 by Pierluigi Paganini – INTERNATIONAL EDITION

 | 

North Korea-linked threat actors spread macOS NimDoor malware via fake Zoom updates

 | 

Critical Sudo bugs expose major Linux distros to local Root exploits

 | 

Google fined $314M for misusing idle Android users' data

 | 

A flaw in Catwatchful spyware exposed logins of +62,000 users

 | 

China-linked group Houken hit French organizations using zero-days

 | 

Cybercriminals Target Brazil: 248,725 Exposed in CIEE One Data Breach

 | 

Europol shuts down Archetyp Market, longest-running dark web drug marketplace

 | 

Kelly Benefits data breach has impacted 550,000 people, and the situation continues to worsen as the investigation progresses

 | 

Cisco removed the backdoor account from its Unified Communications Manager

 | 

U.S. Sanctions Russia's Aeza Group for aiding crooks with bulletproof hosting

 | 
  • Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
  • Home
  • Breaking News
  • Hacking
  • Malware
  • Trojanized Comm100 Live Chat app installer distributed a JavaScript backdoor

Trojanized Comm100 Live Chat app installer distributed a JavaScript backdoor

Pierluigi Paganini October 03, 2022

A threat actor used a trojanized installer for the Comm100 Live Chat application to distribute a JavaScript backdoor.

Cybersecurity firm CrowdStrike disclosed details of a supply chain attack that involved the use of a trojanized installer for the Comm100 Live Chat application to distribute a JavaScript backdoor.

Comm100 is a provider of customer service and communication products that serves over 200,000 businesses. At the time of this writing it is unclear how many customers of the company were impacted by the attack.

The attack took place from at least September 27, 2022 through the morning of September 29, 2022. The malicious installer was used to infect organizations in multiple sectors, including the industrial, healthcare, technology, manufacturing, insurance and telecommunications sectors in North America and Europe.

CrowdStrike researchers assess with moderate confidence that the threat actor behind this supply chain attack likely has a China nexus.

The malicious code was delivered via a signed Comm100 installer that was downloadable from the company’s website

Comm100

“Malware is delivered via a signed Comm100 installer that was downloadable from the company’s website. The installer was signed on September 26, 2022 at 14:54:00 UTC using a valid Comm100 Network Corporation certificate.” reads a report published by CrowdStrike. “CrowdStrike Intelligence can confirm that the Microsoft Windows 7+ desktop agent hosted at https[:]//dash11.comm100[.]io/livechat/electron/10000/Comm100LiveChat-Setup-win.exe that was available until the morning of September 29 was a trojanized installer.”

Comm100 addressed the issue by releasing a clean, updated installer, version 10.0.9.  

The weaponized executable was spotted containing is a JavaScript used to execute a second-stage JavaScript code hosted on a remote server. This second-state Javascript establish a remote shell on the infected system. Attackers also deployed a malicious loader DLL named MidlrtMd.dll that launches an in-memory shellcode to inject an embedded payload into a new instance of notepad.exe.

“The injected payload connects to the malicious C2 domain api.microsoftfileapis[.]com, which resolved to the IP address 8.219.167[.]156 at the time of the incident.” continues the report.

The attackers used the Microsoft Metadata Merge Utility binary to load a the MidlrtMd DLL.

“Furthermore, CrowdStrike Intelligence assesses with moderate confidence that this actor likely has a China nexus. This assessment is based on the presence of Chinese-language comments in the malware, aforementioned tactics, techniques and procedures (TTPs), and the connection to the targeting of online gambling entities in East and Southeast Asia — a previously established area of focus for China-nexus targeted intrusion actors. CrowdStrike Intelligence customers have access to additional reporting related to this actor.”

The report includes Indicators of Compromise (IoCs) for this attack.

Follow me on Twitter: @securityaffairs and Facebook

[adrotate banner=”9″][adrotate banner=”12″]

Pierluigi Paganini

(SecurityAffairs – hacking, Comm100)

[adrotate banner=”5″]

[adrotate banner=”13″]


facebook linkedin twitter

Comm100 Hacking information security news IT Information Security malware Pierluigi Paganini Security Affairs Security News supply chain attack

you might also like

Pierluigi Paganini July 08, 2025
Microsoft Patch Tuesday security updates for July 2025 fixed a zero-day
Read more
Pierluigi Paganini July 08, 2025
Italian police arrested a Chinese national suspected of cyberespionage on a U.S. warrant
Read more

leave a comment

newsletter

Subscribe to my email list and stay
up-to-date!

    recent articles

    Microsoft Patch Tuesday security updates for July 2025 fixed a zero-day

    Security / July 08, 2025

    Italian police arrested a Chinese national suspected of cyberespionage on a U.S. warrant

    Intelligence / July 08, 2025

    U.S. CISA adds MRLG, PHPMailer, Rails Ruby on Rails, and Synacor Zimbra Collaboration Suite flaws to its Known Exploited Vulnerabilities catalog

    Hacking / July 08, 2025

    IT Worker arrested for selling access in $100M PIX cyber heist

    Cyber Crime / July 08, 2025

    New Batavia spyware targets Russian industrial enterprises

    Malware / July 07, 2025

    To contact me write an email to:

    Pierluigi Paganini :
    pierluigi.paganini@securityaffairs.co

    LEARN MORE

    QUICK LINKS

    • Home
    • Cyber Crime
    • Cyber warfare
    • APT
    • Data Breach
    • Deep Web
    • Digital ID
    • Hacking
    • Hacktivism
    • Intelligence
    • Internet of Things
    • Laws and regulations
    • Malware
    • Mobile
    • Reports
    • Security
    • Social Networks
    • Terrorism
    • ICS-SCADA
    • POLICIES
    • Contact me

    Copyright@securityaffairs 2024

    We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
    Cookie SettingsAccept All
    Manage consent

    Privacy Overview

    This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities...
    Necessary
    Always Enabled
    Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
    Non-necessary
    Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
    SAVE & ACCEPT