WORM_LUDER.USR
Threat Scorecard
EnigmaSoft Threat Scorecard
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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: | 50 % (Medium) |
| Infected Computers: | 13 |
| First Seen: | May 9, 2013 |
| Last Seen: | December 13, 2022 |
| OS(es) Affected: | Windows |
WORM_LUDER.USR is a worm that is distributed by using a bogus application, specifically a homemade web browser and targets users of 'Banco do Brasil'. WORM_LUDER.USR steals login information from victimized computer users. The particular web browser is offered that could access the website of the 'Banco do Brasil' without using the necessary security plugin. Web users that click the download link download a zip file. The compressed file involves two executable files: one is the web browser itself, which is called 'Navegador BB', and another one is the file called 'Plugin_Navegador_2.1.3.exe'. These files are recognized as WORM_LUDER.USR. The third file is a text file which carries instructions to run 'Plugin_Navegador_2.1.3.exe' first, and then run the web browser. The 'plugin', in actuality, steals the target PC user's bank information. Meanwhile, the web browser tricks the bank website into not needing the typical security plugin by acting as it is a mobile browser. The homemade web browser doesn't even have an address bar, or any other place to enter a domain name. It only has a single button that sends the Internet user directly to the bank's website.
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. | %System%\install\server.exe | |
| 2. | Plugin_Navegador_2.1.3.exe | |
| 3. | Navegador BB.exe | |
| 4. | %User Temp%\XxX.xXx | |
| 5. | %Application Data%\logs.dat | |
| 6. | %User Temp%\XX--XX--XX.TXT | |
| 7. | %User Temp%\[RANDOM FILE NAME].tmp | |
| 8. | %User Temp%\UuU.uUu |
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