Possible keylogger in my system?

Operating System

Windows 8.1

Computer Specs (PSU, GPU, CPU, RAM, Motherboard)

PCPartPicker part list / Price breakdown by merchantType|Item|Price:----|:----|:----CPU | Intel - Core i5-4590 3.3GHz Quad-Core Processor | $180.00 CPU Cooler | CRYORIG - C7 40.5 CFM CPU Cooler | $38.00 Motherboard | MSI - Z97M Gaming Micro ATX LGA1150 Motherboard | $70.00 Memory | Corsair - XMS3 2GB (1 x 2GB) DDR3-1333 Memory | $0.00 Memory | Corsair - XMS3 2GB (1 x 2GB) DDR3-1333 Memory | $0.00 Memory | Kingston - HyperX Fury Black 4GB (1 x 4GB) DDR3-1866 Memory | $18.00 Memory | Kingston - HyperX Fury Black 4GB (1 x 4GB) DDR3-1866 Memory | $18.00 Storage | Western Digital - AV-GP 320GB 3.5" 5400RPM Internal Hard Drive | $20.00 Storage | Seagate - BarraCuda 1TB 3.5" 7200RPM Internal Hard Drive | $45.00 Video Card | Asus - GeForce GTX 960 2GB Video Card |-Case | NZXT - S340 (Black) ATX Mid Tower Case | $55.00 Power Supply | EVGA - SuperNOVA G2 650W 80 Gold Certified Fully-Modular ATX Power Supply | $90.00 Operating System | Microsoft - Windows 8.1 Pro 32/64-bit | $50.00 Wireless Network Adapter | Gigabyte - GC-WB867D-I PCI-Express x1 802.11a/b/g/n/ac Wi-Fi Adapter | $30.00 Case Fan | Corsair - Air Series White 2 pack 52.2 CFM 120mm Fan | $20.00 Monitor | Sceptre - E225W-1920 22.0" 1920x1080 60Hz Monitor | $80.00 Keyboard | Logitech - K120 Wired Standard Keyboard | $20.00 Mouse | Razer - DeathAdder Chroma Wired Optical Mouse | $58.00 Headphones | Sennheiser - HD 598 CS Headphones | $180.00 | Prices include shipping, taxes, rebates, and discounts | | Total | $972.00 | Generated by PCPartPicker 2017-09-29 18:13 EDT-0400 |

Speccy Link

N/A

Description of problem

So recently my card info was compromised and some people tried to buy a shit ton of shit with it. I'm worried that they might've gotten my info via keylogging or some malware in my computer, despite my best efforts of using uBlock origin and semi-weekly scans with malwarebytes. I have a couple questions:

1) Is there any way to determine if they got the info from my computer rather than my phone or from some other method?

2) Would scanning my system with malwarebytes, hitman pro and emisoft emergency kit suffice or would I need to reformat my whole computer if there was a keylogger? Would reformatting even guarantee safety or would I need to purchase a new hardrive?

If this helps any, they withdrew one dollar and then put one dollar back in before they attempted all the major purchases.

When this issue began

Today

Recurring issue

No

Date of purchase

N/A

Under Warranty

No

Cause/Steps to recreate the issue

N/A

What I've tried so far to resolve the issue

Currently just scanning with the aforementioned software.

Submitted September 30, 2017 at 03:49AM by SammichIzGud http://ift.tt/2xE49CD