A couple weeks ago, I did a MBAM Threat Scan on my desktop (nothing was found, I actually did a couple over that weekend and the following Monday as well... long story).
During the scan I noticed that a lot of the system files were appended with ":WofCompressedData" (or even with ":WofCompressedData:WofCompressedData") at the end. I wasn't paying close enough attention before, but this was the first time I have noticed it. When I re-ran the scan on my desktop I saw WofCompressedData appear a lot. When I ran the scan on my laptop, I saw WofCompressedData, but far less frequently. Both computers run Windows 10 64-bit and both of them came out to be clean. The MBAM people ran had me run logs, and they couldn't find anything wrong.
I wanted to know what WofCompressedData meant. On the first Answers thread, I was told "WofCompressedData file is a disc fragment file and can be deleted. This is created when virus scan is run on the computer." I asked them to confirm that there as nothing I should be worrying about with these files, but the user never ever returned to respond (and that forum doesn't have a private messaging system)
MBAM and Kaspersky and Microsoft Safety Scanner all do not find any problems on my computer. On the second Answers thread, I was told to run sfc /scannow, but the user there did not respond after replying that SFC did not find any problems.
I wanted to confirm that given all these clean reports that I should not be concerned about the ":WofCompressedData". Unfortunately, no one is giving me a clear answer (or sticking around after I reply)
Computer Type Laptop System Manufacturer/Model Number Lenovo IdeaPad Z50-75 (04/2016/refurbished) OS Windows 10 Pro x64 CPU AMD FX-7500 @ 2,1-3,3 GHz Motherboard Lenovo VIUU4 Memory Samsung 4GB PC3-10600 DDR3-1333 (04/2012) & Samsung 4GB PC3-12800 DDR3-1600 (08/2014) Graphics Card AMD Radeon R7 M260DX 2GB & AMD Radeon R7 1GB Sound Card Creative Sound Blaster X-Fi Surround 5.1 (03/2010) Monitor(s) Displays 15,6" BOE HB156FH1-301 Screen Resolution 1366x768
Keyboard Logitech K360 (10/2011) Mouse Logitech M705 (04/2010) Cooling Zalman ZM-NC3 (04/2016) with laptop's bottom cover removed Hard Drives Seagate ST1000LM014-SSHD-8GB Internet Speed 50/50 MBps on Linksys Router E1200 (04/2014) with SG TCP Optimizer Browser Yandex CanvasFingerprintBlock/DisableHTML5Autoplay/uBlockOrigin/uBlockWebsocket/WebRTCControl Antivirus No AV & No Firewall with DNS.Watch and OpenDNS Other Info Headphones: Sennheiser RS170 (09/2010)
Computer Type PC/Desktop System Manufacturer/Model Number Dell XPS 8900 OS Win10/64 Pro 1511 (and 2 Win 7/64 Ult & Pro systems) CPU i7-6700K Motherboard Whatever Dell uses, eh? Memory 32GB Quad DDR4 2133MHz Graphics Card NVidia GeForce GTX 960 2GB DDR5 Sound Card WAVE MaxxAudio4 Monitor(s) Displays Dell U2515 Screen Resolution 2560 x 1440
Keyboard MS Ergo 4000 (USB) Mouse Logitech G602 (wireless) PSU OEM and it better be good enough Hard Drives 256 GB SSD and 2 TB 7200 rpm Spinner Internet Speed Cable broadband Browser Fx Antivirus KIS 2016 + MBAM Premium + MBAE Premium
Windows 10 Forums is an independent web site and has not been authorized,
sponsored, or otherwise approved by Microsoft Corporation.
"Windows 10" and related materials are trademarks of Microsoft Corp.