Troj/DexFont-A
Posted: November 26, 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: | 9/10 |
|---|---|
| Infected PCs: | 7 |
| First Seen: | November 26, 2012 |
|---|---|
| Last Seen: | April 16, 2021 |
| OS(es) Affected: | Windows |
Troj/DexFont-A is a Trojan, which spreads via a hacked Go Daddy website corrupting PC users with ransomware. Troj/DexFont-A is used by attackers to hijack the DNS records of Go Daddy hosted websites. Cybercriminals are exploiting DNS by hijacking the DNS records of websites, adding one or more additional subdomains with corresponding DNS entries (A records) referencing malicious IP addresses. The legitimate hostname resolves to the legitimate IP address, but the added sub-domains resolve to rogue servers. This allows attackers to use legitimate-looking URLs in their attacks, which can help to avoid security filtering and trick PC users into believing the content is safe. The rogue servers are running an exploit kit calling itself 'Cool EK', which is actually very similar to Blackhole Exploit Kit. The Russian origin of the kit is obvious from the login page for the admin panel. Computer users visiting the malicious website are hit with numerous malicious files, exploiting several vulnerabilities, in order to corrupt them with ransomware. When run, the ransomware displays the fake pop-up payment page created by Troj/DexFont-A with contents that differ depending on the country of the affected computer user.
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