Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Vulnerabilities / Threats

A Helpful Trojan Horse?

A new Trojan horse seeks out and eliminates movies and MP3 tracks from users' machines, saving IT the trouble

Here's a first: a Trojan horse that actually helps security pros do their jobs.

Analysts at SophosLabs, the research arm of antivirus software vendor Sophos, have discovered a spyware-borne Trojan, dubbed Troj/Erazer-A, that seeks out and destroys movie and music files that it suspects to be illegal copies transmitted via peer-to-peer (P2P) file sharing networks.

The Trojan looks through P2P file sharing folders, seeking out formats such as AVI, MP3, MPEG, WMV, GIF, and ZIP. When it finds these files, it wipes them out and places a copy of itself in the folder, using tempting names such as game.exe, goporn.exe, nero7.exe, and officexpcrack.exe, according to Sophos.

Researchers say that, while some IT departments may be tempted to keep a Trojan that deletes files enterprise users aren't supposed to have anyway, they should think twice.

"The Erazer Trojan is a vigilante worthy of a Charles Bronson movie, taking the law into its own hands. However, it's perfectly possible for the Trojan to aim poorly and wipe out innocent files, too," says Graham Cluley, senior technology consultant at Sophos. "Malware is not the way to fight Internet piracy."

Trojan Erazer could be dangerous because it tries to turn off antivirus applications and other security tools, the researchers observed, noting that its methods are worrisome because it deletes files, steals information, adds itself to the registry, and then drops more malware on the target system.

Still, other security monitoring groups consider the risk to be negligible. The French Security Incident Response Team (FrSIRT) ranked Trojan as "low risk," its lowest incident rating.

P2P, by contrast, continues to be a growing threat to enterprise security. Reconnex, a risk management company, reported that it found P2P protocols in 78 percent of enterprises during the first quarter of 2006, compared with 35 percent in all of 2005. (See Reconnex Targets Threats.)

Trojan/Erazer can be removed with most Windows anti-virus tools, using the same practices used for any other virus, experts said.

— Tim Wilson, Site Editor, Dark Reading

Organizations mentioned in this story

  • French Security Incident Response Team
  • Reconnex Corp.
  • Sophos plc

    Tim Wilson is Editor in Chief and co-founder of Dark Reading.com, UBM Tech's online community for information security professionals. He is responsible for managing the site, assigning and editing content, and writing breaking news stories. Wilson has been recognized as one ... View Full Bio

    Comment  | 
    Print  | 
    More Insights
  • Comments
    Newest First  |  Oldest First  |  Threaded View
    COVID-19: Latest Security News & Commentary
    Dark Reading Staff 9/21/2020
    Hacking Yourself: Marie Moe and Pacemaker Security
    Gary McGraw Ph.D., Co-founder Berryville Institute of Machine Learning,  9/21/2020
    Startup Aims to Map and Track All the IT and Security Things
    Kelly Jackson Higgins, Executive Editor at Dark Reading,  9/22/2020
    Register for Dark Reading Newsletters
    White Papers
    Video
    Cartoon
    Current Issue
    Special Report: Computing's New Normal
    This special report examines how IT security organizations have adapted to the "new normal" of computing and what the long-term effects will be. Read it and get a unique set of perspectives on issues ranging from new threats & vulnerabilities as a result of remote working to how enterprise security strategy will be affected long term.
    Flash Poll
    How IT Security Organizations are Attacking the Cybersecurity Problem
    How IT Security Organizations are Attacking the Cybersecurity Problem
    The COVID-19 pandemic turned the world -- and enterprise computing -- on end. Here's a look at how cybersecurity teams are retrenching their defense strategies, rebuilding their teams, and selecting new technologies to stop the oncoming rise of online attacks.
    Twitter Feed
    Dark Reading - Bug Report
    Bug Report
    Enterprise Vulnerabilities
    From DHS/US-CERT's National Vulnerability Database
    CVE-2020-26088
    PUBLISHED: 2020-09-24
    A missing CAP_NET_RAW check in NFC socket creation in net/nfc/rawsock.c in the Linux kernel before 5.8.2 could be used by local attackers to create raw sockets, bypassing security mechanisms, aka CID-26896f01467a.
    CVE-2020-6153
    PUBLISHED: 2020-09-24
    An exploitable SQL injection vulnerability exists in the FavoritesService.asmx Web Service functionality of eDNA Enterprise Data Historian 3.0.1.2/7.5.4989.33053. A specially crafted SOAP web request can cause an SQL injection resulting in data compromise. An attacker can send an unauthenticated HTT...
    CVE-2020-13521
    PUBLISHED: 2020-09-24
    Parameter psAttribute in ednareporting.asmx is vulnerable to unauthenticated SQL injection attacks.Specially crafted SOAP web requests can cause SQL injections resulting in data compromise. An attacker can send unauthenticated HTTP requests to trigger this vulnerability.
    CVE-2020-15840
    PUBLISHED: 2020-09-24
    In Liferay Portal before 7.3.1, Liferay Portal 6.2 EE, and Liferay DXP 7.2, DXP 7.1 and DXP 7.0, the property 'portlet.resource.id.banned.paths.regexp' can be bypassed with doubled encoded URLs.
    CVE-2020-24365
    PUBLISHED: 2020-09-24
    An issue was discovered on Gemtek WRTM-127ACN 01.01.02.141 and WRTM-127x9 01.01.02.127 devices. The Monitor Diagnostic network page allows an authenticated attacker to execute a command directly on the target machine. Commands are executed as the root user (uid 0). (Even if a login is required, most...