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False positive detections related to Pharos printing


DMC

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As of 9pm on 14 July 2022, MWB Nebula began quarantining .DLL files with the same Malware.AI reference number. We have discovered (the hard way) they belong to Pharos' print service.

Example:

Quarantined Detection Data  
Name: Malware.AI.2373423128
Category: Malware
Type: File
Location: C:\WINDOWS\SYSTEM32\PSR9265C.DLL
Detection ID: e8573994-03e1-11ed-bed4-54b3aefc7b09
Endpoint: redacted
Scanned At: 07/14/2022 9:00:02 PM
Quarantined At: 07/14/2022 9:00:03 PM
Reported At: 07/14/2022 9:11:23 PM
Scan ID: 07134216-8dad-4442-b7f6-7f5155fb551a

 

Other files names quarantined include:

C:\WINDOWS\SYSTEM32\PSR04AB0.DLL
C:\WINDOWS\SYSTEM32\PSR0904A.DLL
C:\WINDOWS\SYSTEM32\PSR0BEC1.DLL
C:\Windows\System32\PSR0D8AD.DLL
C:\WINDOWS\SYSTEM32\PSR10A58.DLL
C:\WINDOWS\SYSTEM32\PSR128E1.DLL
C:\Windows\System32\PSR1941E.DLL
C:\Windows\System32\PSR1F19F.DLL
C:\WINDOWS\SYSTEM32\PSR1F633.DLL
C:\WINDOWS\SYSTEM32\PSR253AF.DLL
C:\Windows\System32\PSR360A0.DLL
C:\Windows\System32\PSR3927E.DLL
C:\WINDOWS\SYSTEM32\PSR42D95.DLL
C:\WINDOWS\SYSTEM32\PSR6AB4F.DLL
C:\WINDOWS\SYSTEM32\PSR85000.DLL
C:\WINDOWS\SYSTEM32\PSR8CE2C.DLL
C:\WINDOWS\SYSTEM32\PSR9265C.DLL
C:\Windows\System32\PSR9C828.DLL
C:\WINDOWS\SYSTEM32\PSRAF59B.DLL
C:\WINDOWS\SYSTEM32\PSRB7D8E.DLL
C:\WINDOWS\SYSTEM32\PSRBA0C3.DLL
C:\WINDOWS\SYSTEM32\PSRC07D3.DLL
C:\WINDOWS\SYSTEM32\PSRCFA07.DLL
C:\WINDOWS\SYSTEM32\PSRD6CAA.DLL

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