Troj/ExpJS-IT
Threat Scorecard
EnigmaSoft Threat Scorecard
EnigmaSoft Threat Scorecards are assessment reports for different malware threats which have been collected and analyzed by our research team. EnigmaSoft Threat Scorecards evaluate and rank threats using several metrics including real-world and potential risk factors, trends, frequency, prevalence, and persistence. EnigmaSoft Threat Scorecards are updated regularly based on our research data and metrics and are useful for a wide range of computer users, from end users seeking solutions to remove malware from their systems to security experts analyzing threats.
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Ranking: The ranking of a particular threat in EnigmaSoft’s Threat Database.
Severity Level: The determined severity level of an object, represented numerically, based on our risk modeling process and research, as explained in our Threat Assessment Criteria.
Infected Computers: The number of confirmed and suspected cases of a particular threat detected on infected computers as reported by SpyHunter.
See also Threat Assessment Criteria.
| Threat Level: | 90 % (High) |
| Infected Computers: | 26 |
| First Seen: | May 8, 2013 |
| Last Seen: | May 12, 2023 |
| OS(es) Affected: | Windows |
Troj/ExpJS-IT is a Trojan that is distributed via a compromised US Department of Labor website. A subdomain of the Department's main website, running off a separate server, what's known colloquially as a microsite, was changed to incorporate a malware infection, namely Troj/ExpJS-IT. Troj/ExpJS-IT uses a malevolent JavaScript file to get the hijacked Internet browser to drop a file called 'bookmark.png'. It appears as an image file, but in fact it is a Windows application with the first byte modified so that it can't execute by itself. The malevolent JavaScript then uses the function called 'helo()' in the script above in an effort to evoke the CVE-2012-4792 remote code execution vulnerability in Internet Explorer. The attackers hope that this will fool the hacked Internet browser into jumping over its security checks to alter and execute the downloaded harmful application without asking the PC user. The drive-by-download exploit script is recognized as Troj/ExpJS-IT.
File System Details
| # | File Name |
Detections
Detections: The number of confirmed and suspected cases of a particular threat detected on
infected computers as reported by SpyHunter.
|
|---|---|---|
| 1. | bookmark.png |
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