Categories: PUA

PUP.Optional.FusionCore removal

The PUP.Optional.FusionCore is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

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What PUP.Optional.FusionCore virus can do?

  • Executable code extraction
  • Creates RWX memory
  • Possible date expiration check, exits too soon after checking local time
  • Attempts to connect to a dead IP:Port (10 unique times)
  • Reads data out of its own binary image
  • Drops a binary and executes it
  • Performs some HTTP requests
  • Uses Windows utilities for basic functionality
  • Creates a hidden or system file
  • Attempts to modify proxy settings

Related domains:

newfreescreensavers.com
www.bing.com
crt.sectigo.com
crt.usertrust.com
ocsp.comodoca.com
ocsp.usertrust.com
ocsp.sectigo.com
ssl.google-analytics.com
ocsp.pki.goog
www.newfreescreensavers.com

How to determine PUP.Optional.FusionCore?


File Info:

crc32: 383C237Fmd5: d52876f5373c59f3a6f67835f6e206b4name: D52876F5373C59F3A6F67835F6E206B4.mlwsha1: 98476bce26cb4e8accfe40bb28bf87c5eca74e8bsha256: d795631333cfcd319050f429905049dbed94bfc5067d43a46a6cca3d6a8f270fsha512: 18b0d18f4d3f9300e39a8515ec0190f491ee9610f5b8258c8387901c8a2b0c0537e27fea9a3d1adcd8d78e3e6abce289574f6ca4fcc2f9f7ad247deb38193ce9ssdeep: 24576:nxGILiHaWvfSF50ayayZ6U6fHMJfMXV1Ei1jMULubGet3Pb8IDFtM5lxVT0G6Bzu:Qi4USnjNMXV1Ei1j9LubbPoIXM5FoXw/type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: FileVersion: CompanyName: NewFreeScreensavers.com Comments: This installation was built with Inno Setup.ProductName: I Love My Dad New Free Screensaver ProductVersion: FileDescription: I Love My Dad New Free Screensaver Setup Translation: 0x0000 0x04b0

PUP.Optional.FusionCore also known as:

Bkav W32.AIDetect.malware2
Lionic Riskware.Win32.Funshion.1!c
DrWeb Trojan.InstallCore.3052
ALYac Application.Agent.JKV
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_70% (D)
Alibaba Downloader:Win32/Funshion.25bbf26e
Cybereason malicious.5373c5
Symantec PUA.InstallCore
ESET-NOD32 a variant of Win32/FusionCore.P potentially unwanted
APEX Malicious
Avast Win32:Malware-gen
Kaspersky not-a-virus:UDS:Downloader.Win32.Funshion
BitDefender Application.Agent.JKV
NANO-Antivirus Trojan.Win32.InstallCore.erztgi
ViRobot Adware.Installcore.1876954
MicroWorld-eScan Application.Agent.JKV
Sophos Generic PUA JI (PUA)
Comodo ApplicUnwnt@#31xvzn7f8vtuk
TrendMicro PUA.Win32.FusionCore.SMBD
McAfee-GW-Edition BehavesLike.Win32.InstallCore.tc
FireEye Generic.mg.d52876f5373c59f3
Emsisoft Application.Downloader (A)
SentinelOne Static AI – Suspicious PE
Microsoft PUA:Win32/Presenoker
ZoneAlarm not-a-virus:HEUR:Downloader.Win32.Funshion.gen
GData Win32.Application.FusionCore.D
McAfee Artemis!D52876F5373C
MAX malware (ai score=72)
VBA32 Downloader.Funshion
Malwarebytes PUP.Optional.FusionCore
TrendMicro-HouseCall PUA.Win32.FusionCore.SMBD
Rising Trojan.Generic@ML.86 (RDML:jddMbPixrz6cttDp2DHinw)
Yandex PUA.Downloader!RpQY6B/waBE
MaxSecure Trojan.Malware.74524530.susgen
Fortinet Riskware/Funshion
AVG Win32:Malware-gen
Paloalto generic.ml

How to remove PUP.Optional.FusionCore?

  • Download and install GridinSoft Anti-Malware.
  • Open GridinSoft Anti-Malware and perform a “Standard scan“.
  • Move to quarantine” all items.
  • Open “Tools” tab – Press “Reset Browser Settings“.
  • Select proper browser and options – Click “Reset”.
  • Restart your computer.
Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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