What is nvldumdx.dll?

nvldumdx.dll is part of NVIDIA driver loader and developed by NVIDIA Corporation according to the nvldumdx.dll version information.

nvldumdx.dll's description is "NVIDIA Driver Loader, Version 419.67 "

nvldumdx.dll is digitally signed by NVIDIA Corporation-PE-Prod-Sha1.

nvldumdx.dll is usually located in the 'C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c5dc31c3a136544a\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about nvldumdx.dll.

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 69 anti-virus programs at VirusTotal detected the nvldumdx.dll file.

Sandbox Report

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

Summary

Successfully executed process in sandbox.

Summary

{
    "dll_loaded": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll"
    ],
    "file_opened": [
        "C:\\Windows\\System32\\en-US\\KERNELBASE.dll.mui",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll"
    ],
    "command_line": [
        "\"C:\\Windows\\System32\\rundll32.exe\" C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll,DllMain"
    ],
    "file_exists": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll.manifest"
    ],
    "file_read": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll"
    ],
    "regkey_read": [
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\Windows Error Reporting\\WMR\\Disable",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
    ]
}

Generic

[
    {
        "process_path": "C:\\Windows\\SysWOW64\\rundll32.exe",
        "process_name": "rundll32.exe",
        "pid": 2124,
        "summary": {
            "dll_loaded": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll"
            ],
            "file_opened": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll"
            ],
            "command_line": [
                "\"C:\\Windows\\System32\\rundll32.exe\" C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll,DllMain"
            ],
            "file_exists": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll.manifest"
            ],
            "file_read": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
            ]
        },
        "first_seen": 1584715985.734375,
        "ppid": 2504
    },
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1584715985.515625,
        "ppid": 376
    },
    {
        "process_path": "C:\\Windows\\System32\\rundll32.exe",
        "process_name": "rundll32.exe",
        "pid": 2588,
        "summary": {
            "file_opened": [
                "C:\\Windows\\System32\\en-US\\KERNELBASE.dll.mui"
            ],
            "file_exists": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll.manifest"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\Windows Error Reporting\\WMR\\Disable",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
            ],
            "dll_loaded": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\d79718dac98d0544e31694c653e09df7af8d2d967aa9ab976c6813e9756b52f9.bin.dll"
            ]
        },
        "first_seen": 1584715985.96875,
        "ppid": 2124
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "C:\\dvs\\p4\\build\\sw\\rel\\gpu_drv\\r418\\r419_50\\drivers\\nvldumd\\_out\\wddm2_amd64_release\\nvldumdx.pdb",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "has_pdb"
    },
    {
        "markcount": 2,
        "families": [],
        "description": "The executable contains unknown PE section names indicative of a packer (could be a false positive)",
        "severity": 1,
        "marks": [
            {
                "category": "section",
                "ioc": ".gfids",
                "type": "ioc",
                "description": null
            },
            {
                "category": "section",
                "ioc": ".00cfg",
                "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": "192.168.56.255",
            "offset": 662,
            "time": 6.195849895477295,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5694,
            "time": 6.148032903671265,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6022,
            "time": 4.135467052459717,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6350,
            "time": 6.1580970287323,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6678,
            "time": 4.771322965621948,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 7006,
            "time": 3.033601999282837,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 7334,
            "time": 4.7273759841918945,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 20274,
            "time": 4.1564459800720215,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 28658,
            "time": 6.2203240394592285,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "af31da6f5f10e4f5cfefbd1c8d70eb93d16c392a39fa6851e70cf9f2ff38fb35",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "71d794b83fc85ed75eceb2617061df844326aeb631f83152e6070dbc3af5a162",
    "irc": [],
    "https_ex": []
}

Screenshots

Folder name variants

nvldumdx.dll may also be located in other folders than C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_c5dc31c3a136544a\. The most common variants are listed below:

• C:\WINDOWS\System32\DriverStore\FileRepository\nvaki.inf_amd64_cfbb6c5c29fbbd76\
• C:\WINDOWS\System32\DriverStore\FileRepository\nvami.inf_amd64_87707a61a7faf7b5\
• C:\WINDOWS\System32\DriverStore\FileRepository\nvlti.inf_amd64_6aaf7a546b271bf8\

Other files also named nvldumdx.dll

nvldumdx.dll (93 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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