What is rxfcv.sys?

rxfcv.sys is part of PrimoCache and developed by Romex Software according to the rxfcv.sys version information.

rxfcv.sys's description is "PrimoCache Driver"

rxfcv.sys is digitally signed by Shanghai Romex Information Technology Co.,Ltd..

rxfcv.sys is usually located in the 'C:\Windows\system32\drivers\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about rxfcv.sys.

If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.

VirusTotal report

None of the 73 anti-virus programs at VirusTotal detected the rxfcv.sys file.

Sandbox Report

The following information was gathered by executing the file inside Cuckoo Sandbox.

Summary

ERROR: Failed to execute process.

Generic

[
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1563940385.3438,
        "ppid": 376
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "E:\\PROJECT\\FancyCache\\release\\drv\\win7\\amd64\\rxfcv_raw.pdb",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "has_pdb"
    },
    {
        "markcount": 4,
        "families": [],
        "description": "The executable contains unknown PE section names indicative of a packer (could be a false positive)",
        "severity": 1,
        "marks": [
            {
                "category": "section",
                "ioc": "EXTRA",
                "type": "ioc",
                "description": null
            },
            {
                "category": "section",
                "ioc": "CPATA",
                "type": "ioc",
                "description": null
            },
            {
                "category": "section",
                "ioc": "PAGE",
                "type": "ioc",
                "description": null
            },
            {
                "category": "section",
                "ioc": "INIT",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "pe_features"
    }
]

Yara

The Yara rules did not detect anything in the file.

Network

{
    "tls": [],
    "udp": [
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 826,
            "time": 4.1453440189362,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 1154,
            "time": 3.0457420349121,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 1482,
            "time": 4.1799080371857,
            "dport": 3702,
            "sport": 49152
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "e6dea2fbadd361999e2bba504000d7990778dd0035aedaba4c8730f2d5db8f50",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "40422a3879eebb6e2948f57980807a2a548088a439c43b38a81f87067db8c71e",
    "irc": [],
    "https_ex": []
}

Other files also named rxfcv.sys

rxfcv.sys (20 votes)

Malware or legitimate?

If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.

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