TrojanDropper:JS/Exjaysee.A
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: | 7 |
| First Seen: | January 13, 2017 |
| Last Seen: | July 23, 2019 |
| OS(es) Affected: | Windows |
TrojanDropper:JS/Exjaysee.A is a detection name used by security scanners. TrojanDropper:JS/Exjaysee.A refers to a computer Trojan that is written in the JavaScript programming language that is mostly found on Web servers. The technical detection name can change with time since the author can modify the code and release the Trojan again. Thus, security researchers work with names that can adapt. The root name is Exjaysee followed by the version identifier 'A.' The root name is preceded by two prefixes—the threat type and primary programming language. Trojans like Exjaysee and Febipos may include code written in other languages to expand their capabilities and send commands to various peripheral devices and modules. The author of the Exjaysee Trojan may have decided to write the program in JavaScript since it is a versatile programming language and allows for fast troubleshooting and implementation of changes.
Most variants of Exjaysee appear to be used as Trojan-Droppers and work similarly to FrauDrop. As stated above, TrojanDropper:JS/Exjaysee can be found on server systems where the Trojan-Dropper can download and run foreign code on the compromised machine. Security scanners may detect Exjaysee as TrojanDropper:JS/Exjaysee.A, TrojanDropper:JS/Exjaysee.E and other names that feature new version identifiers. TrojanDropper:JS/Exjaysee can be programmed to load an iFrame on targeted sites that can be used for various purposes. TrojanDropper:JS/Exjaysee may be used to redirect users and issue automatic downloads when you click on parts of compromised pages. Threats like TrojanDropper:JS/Exjaysee can be very useful to Black Hat hackers that wish to establish a proxy on the infected machine and hide their activities from law enforcement agencies. Cyber security experts advise server administrators and regular PC users to make a complete system scan with a trusted anti-malware suite if they experience unusual redirects, network traffic and slow Internet connection.
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