Researchers last week detected a new, fileless version of the malicious remote access tool njRAT that propagates as a worm via removable drives.

Also known as BLADABINDI or njw0rm, the njRAT acts as a backdoor, capable of cyber espionage, keylogging, distributed denial of service attacks, retrieving and executing files, and stealing credentials from web browsers.

This particular variant, identified as Worm.Win32.BLADABINDI.AA, leverages AutoIt, a free automation script language for Windows, to compile the final payload and the main script into one executable. The technique makes the ultimate payload difficult to detect, Trend Micro threats analyst Carl Maverick R. Pascual reported today in a company blog post.

Please register to continue.

Already registered? Log in.

Once you register, you'll receive:

  • News analysis

    The context and insight you need to stay abreast of the most important developments in cybersecurity. CISO and practitioner perspectives; strategy and tactics; solutions and innovation; policy and regulation.

  • Archives

    Unlimited access to nearly 20 years of SC Media industry analysis and news-you-can-use.

  • Daily Newswire

    SC Media’s essential morning briefing for cybersecurity professionals.

  • Learning Express

    One-click access to our extensive program of virtual events, with convenient calendar reminders and ability to earn CISSP credits.