Ransom.ZAAC
Posted: February 29, 2012
Threat Metric
The following fields listed on the Threat Meter containing a specific value, are explained in detail below:
Threat Level: The threat level scale goes from 1 to 10 where 10 is the highest level of severity and 1 is the lowest level of severity. Each specific level is relative to the threat's consistent assessed behaviors collected from SpyHunter's risk assessment model.
Detection Count: The collective number of confirmed and suspected cases of a particular malware threat. The detection count is calculated from infected PCs retrieved from diagnostic and scan log reports generated by SpyHunter.
Volume Count: Similar to the detection count, the Volume Count is specifically based on the number of confirmed and suspected threats infecting systems on a daily basis. High volume counts usually represent a popular threat but may or may not have infected a large number of systems. High detection count threats could lay dormant and have a low volume count. Criteria for Volume Count is relative to a daily detection count.
Trend Path: The Trend Path, utilizing an up arrow, down arrow or equal symbol, represents the level of recent movement of a particular threat. Up arrows represent an increase, down arrows represent a decline and the equal symbol represent no change to a threat's recent movement.
% Impact (Last 7 Days): This demonstrates a 7-day period change in the frequency of a malware threat infecting PCs. The percentage impact correlates directly to the current Trend Path to determine a rise or decline in the percentage.
Threat Level: | 1/10 |
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Infected PCs: | 92 |
First Seen: | February 29, 2012 |
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OS(es) Affected: | Windows |
Ransom.ZAAC is a malware threat and part of a ransomware scam pretending to be from the Italian Police. Ransom.ZAAC is attacking website visitors who speak Italian. When Italian PC users log into websites hijacked with the JavaScript associated with Ransom.ZAAC, it shows fake 'authorized flag' reports alerting illegal activity has been identified in connection with child abuse pornography and that illegal spam emails are also being sent from the user's computer.
The fake message goes on to say that it has become necessary to lock the PC so that no further illegal content would be delivered. The fabricated message declares that the computer can, however, be unlocked for which the PC user needs to pay the amount of 100EUR during the next 24 hours. When Ransom.ZAAC is executed, it blocks the computer from operating. Ransom.ZAAC deactivates the Task Manager and hijacks the Windows Registry. Ransom.ZAAC modifies the Windows Registry, so that it can run every time you start your PC. Although affected PC users pay the fine, the problem isn't solved because they will receive a useless unlocking key. It is strongly advised to scan your PC and remove Ransom.ZAAC by using genuine security software.
Technical Details
Registry Modifications
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\..{RunKeys}HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\vasja
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