What is a Computer Torjan?

In a world when daily internet access is part and parcel of life, it is hard to avoid the many threats that are out there lurking in the ‘wild’. And with so many type of malware out their its hard to know the difference.
Each type of malware has its own purpose and threats associated with it, while hopefully most people us an Anti-Virus program there are still a number whom don’t.

A Trojan virus lends its name from the greek myth of the trojan Horse, while these days the delivery package is not a giant wooden horse it does has as devastating of an effect. The premise of a Trojan virus is to alow a remote user or attacker access to your system, or allowing them the ability to make changes on the system.

There are 14 Main types of trojans, each with very similar fundamentals but their over all goal can differ. When a system is infected with a Trojan an attacker can execute actions without the owner of the systems permissions. And in many cases without them even knowing.

Although initially it was mainly windows PC’s affected by Trojan’s in recent years the number on Android devices has increased at an exponential rate. Due to the unauthorised applications that can be installed on Android devices has opened them up to these type of attacks.

Notable Trojan Viruses

  • Shedun
    • The Shedun virus come from a family of malware, its primary platform is Android devices and was originally discovered in 2015. The virus would then redesign legitimately installed applications and flood them with ads. It is very difficult to remove and in many cases cannot be removed unless the device is rooted and them flash with a custom ROM.
  • Blackhole exploit Kit
    • The Blackhole exploit was one of the most effective and wide-spread viruses during 2012. Sophos stated that 29% of all web threats were caused by the Blackhole exploit kit. When this virus was active on a system it recorded huge amounts of data, including the victims county, browser type and the operating system they where using.
  • Tiny Banker Trojan
    • The Tiny Banker Trojan’s target of choice was financial organisations websites. The attack vector in use is a man-in-the-browser. This means that it intercepts the data between the user and the web server.
      The Tiny Banker Trojan is based on the Banker Trojan but has been reduced in size and been made more powerful.
      Once the Virus has been deployed on a site any information such as login details or bank details can be stolen and then used for malicious or illegal purposes.
  • Gh0st RAT
    • The Gh0st RAT targeted Windows systems as was able to infect a number of very sensitive systems. The RAT or Remote Access Terminal also for the attacker to take complete control of the infected system. This can be used to perform keylogging activity, provide recording of webcams and also displaye user input to name a few.
  • MiniPanzer and MegaPanzer
    • MiniPanzer and MegaPanzer are variants from Bundestrojaner (German for state-sponcered Trojan Horse) It was designed for the swiss government and then later used to capture information.

As long as your system has a anti-virus application and your careful about how you use the internet, your changes of being infected by a Trojan is reduced massively. And with new malware appearing everyday there could be numerous Trojan’s out their in the wild that are yet to be detected by anti-virus companies and then added to their database.

And in many cases you may be unaware that your system has been infected as the attacker could simply be collecting data on you to used at a later date.