Threat Database Trojans Trojan.Ransom

Trojan.Ransom

By Domesticus in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 9
First Seen: January 19, 2011
OS(es) Affected: Windows

Trojan.Ransom is a generic name for a kind of malware that locks up the infected PC and demands a ransom in order to unlock it. Variations on this kind of malware will often have “Trojan.Ransom" in their names, along with some other words or numbers and letters, to identify each specific malicious file. However, when the malware is referred to only as Trojan.Ransom, it tends to be an infection that locks the infected computer with a screen that includes pornographic content or references to pornographic content. In that case, Trojan.Ransom is widely referred to as WinLock or LockScreen.

Why is It so Common for Trojan.Ransom’s Lock Screen to be in Russian?

Trojan.Ransom has become more and more of a problem with time, and infection rates are higher now than they have ever been, but Trojan.Ransom is actually nothing new. The first reports of infections were in September 2004. For at least the first two or three years, infections of Trojan.Ransom were almost exclusive to Russia, and historically, Russian PC users have been hit the hardest by the Trojan.Ransom scam. Eventually, varieties of Trojan.Ransom spread to computers around the globe, although Russian-language versions of the malware still seem to be much more common than any other kind. This means that it is typical for people to wind up with a version of the Trojan.Ransom infection that is in a language they don't understand, adding difficulty and confusion to the malware removal process.

Symptoms Caused by Trojan.Ransom

Trojan.Ransom is characterized by one major, characteristic symptom, which is that Trojan.Ransom locks the infected PC with a screen that references pornography and demands a ransom payment in order to unlock the system. While Trojan.Ransom is present and active, Trojan.Ransom will lock the affected PC as soon as the computer starts, completely preventing access to everything, including the desktop. While the specific wording of the lock screen varies from one variety of Trojan.Ransom to the next, the content generally follows one of two closely-related patterns:

  1. The lock screen claims to represent a government agency, or threatens to report the user to a government agency. This issue is a supposed crime relating to pornography, especially varieties of extreme or unusual pornography that are illegal. The lock screen claims to have evidence against the user, either in the form of browser history or hard drive contents, implicating the user in viewing or possessing illegal pornographic content.
  2. The lock screen claims that the user is required to pay a fine to the government, or it demands that the user pay some amount of money in exchange for not being turned over to the government. There is a specific, very short time limit for the payment of the fine or ransom. Twenty-four hours is most common. After that, supposedly, either the government will arrest the user, or whoever possesses the evidence against the user will give it to the government.
  3. A method of payment is specified for the ransom, and it is never by credit card. Untraceable payment services such as cash cards and money sent via text message are standard.

  4. The lockscreen claims to represent a service or community that specializes in a variety of pornography that the user will most likely find repellent. It claims that the user has agreed to a certain term of membership and that the membership agreement included a penalty for cancelling early. In order to unlock the computer, the lock screen demands that the user pay this supposedly previously-agreed-upon cancellation fee. As with the previous scenario, there is often a limited time frame for payment of the fee, and untraceable payment methods are always used.

Good Reasons Not to Pay the Trojan.Ransom Ransom

There have been varying reports about the effects of paying the ransom that Trojan.Ransom demands. Some users report that their computer was unlocked for a day or two, only to be locked again; others report that paying the ransom has no effect whatsoever on the state of their PC. Either way, paying the money that Trojan.Ransom asks for is not worthwhile, since Trojan.Ransom doesn't result in the malware permanently leaving you alone.

The good thing about removing Trojan.Ransom is that it is relatively simple to do, because regardless of which mutation or variety is causing a particular infection, Trojan.Ransom is not at all a sophisticated piece of malware. On the contrary, Trojan.Ransom is often simplistic and crude under the surface, which can be a result of the malware being created by crooks who are only very minimally competent in creating these programs. So, rather than panicking and paying them money that you will never be able to get back or to prove that you sent, remember that what the lock screen tells you is fake. Trojan.Ransom will not control your computer forever.

SpyHunter Detects & Remove Trojan.Ransom

File System Details

Trojan.Ransom may create the following file(s):
# File Name MD5 Detections
1. ldr.mcb f3b519a1b7d8f7111a2a0ba1f5674e38 4
2. taskmgr.exe de095d328199bb85a6d542a7dceacfae 2
3. {12046F67-6E6A-00EB-7447-FF0C3D6FBD2E}.exe 322bc1ddf691b8a9f7815ac1f4b9e9b7 2
4. 7B19.exe 843247f84615f30bc9fdbe1e074acc24 1
5. contacts.exe dcc4501e3348c4665391ff126d7c2fb1 0
6. info[1].exe 270b8ce04a9f55809938430a2fe6bb47 0

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