• 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

Athlete or Hacker? Russian basketball player accused in U.S. ransomware case

 | 

U.S. CISA adds Citrix NetScaler ADC and Gateway flaw to its Known Exploited Vulnerabilities catalog

 | 

UK NCA arrested four people over M&S, Co-op cyberattacks

 | 

PerfektBlue Bluetooth attack allows hacking infotainment systems of Mercedes, Volkswagen, and Skoda

 | 

Qantas data breach impacted 5.7 million individuals

 | 

DoNot APT is expanding scope targeting European foreign ministries

 | 

Nippon Steel Solutions suffered a data breach following a zero-day attack

 | 

Iranian group Pay2Key.I2P ramps Up ransomware attacks against Israel and US with incentives for affiliates

 | 

Hackers weaponize Shellter red teaming tool to spread infostealers

 | 

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

 | 
  • 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
  • Cyber Crime
  • Malware
  • USB Thief, the new USB-based data stealing Trojan

USB Thief, the new USB-based data stealing Trojan

Pierluigi Paganini March 29, 2016

USB Thief, the new USB-based data-stealing Trojan discovered by ESET that relies on USB devices in order to spread itself and infect also air-gapped systems

Security researchers at ESET have discovered a new insidious data-stealer, dubbed USB Thief (Win32/PSW.Stealer.NAI), that relies on USB devices in order to spread itself.

USB Thief is able to infect air-gapped or isolated systems does not leave any trace of activity on the infected systems.

Malware authors have implemented special techniques mechanisms to protect USB Thief from being detected and analyzed. The authors also implemented an advanced multi-staged encryption process to protect the Trojan.

“The USB Thief is, in many aspects different from the more common malware types that we’re used to seeing flooding the internet,” wrote Tomáš Gardoň, a malware analyst at ESET.

“This one uses only USB devices for propagation, and it does not leave any evidence on the compromised computer. Its creators also employ special mechanisms to protect the malware from being reproduced or copied, which makes it even harder to detect and analyze.

Badusb

The USB Thief Trojan malware can be stored either as a Dynamically Linked Library (DLL) used by the portable applications or as a portable application’s plugin source.

Mobile devices are usually used to store portable version of common applications like Firefox, TrueCrypt, and Notepad++. When victims launch the portable application the USB Thief runs in the background.

“Unfortunately, this is not the case with the USB Thief as it uses an uncommon way to trick a user – it benefits from the fact that USB devices often store portable versions of some common applications like Firefox portable, Notepad++ portable, TrueCrypt portable and so on.” continues the post.

The malware completely resides on the USB device, it doesn’t leave any trace of its presence. According to the experts at the ESET any tool that could be used to breach an air-gapped network must be taken into account.

“Well, taking into account that organizations isolate some of their systems for a good reason,” said Peter Stancik, the security evangelist at ESET. “Any tool capable of attacking these so called air-gapped systems must be regarded as dangerous.” “People should understand the risks associated with USB storage devices obtained from sources that may not be trustworthy.”

How can organizations prevent attacks based on USB Thief  from succeeding?

  • Do not use USB storage devices from sources that may not be trustworthy.
  • Disable USB ports wherever possible.
  • Define strict policies to enforce care in the use of USB devices.
  • Train the staff on cyber threats.

[adrotate banner=”9″]

Pierluigi Paganini

(Security Affairs – USB Thief, malware)


facebook linkedin twitter

air-gapped system Cybercrime malware Trojan USB USB Thief

you might also like

Pierluigi Paganini July 11, 2025
U.S. CISA adds Citrix NetScaler ADC and Gateway flaw to its Known Exploited Vulnerabilities catalog
Read more
Pierluigi Paganini July 10, 2025
UK NCA arrested four people over M&S, Co-op cyberattacks
Read more

leave a comment

newsletter

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

    recent articles

    Athlete or Hacker? Russian basketball player accused in U.S. ransomware case

    Uncategorized / July 11, 2025

    U.S. CISA adds Citrix NetScaler ADC and Gateway flaw to its Known Exploited Vulnerabilities catalog

    Hacking / July 11, 2025

    UK NCA arrested four people over M&S, Co-op cyberattacks

    Cyber Crime / July 10, 2025

    PerfektBlue Bluetooth attack allows hacking infotainment systems of Mercedes, Volkswagen, and Skoda

    Hacking / July 10, 2025

    Qantas data breach impacted 5.7 million individuals

    Data Breach / July 10, 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