What is fwAux.dll?

fwAux.dll is part of AVG Internet Security System and developed by AVG Technologies CZ, s.r.o. according to the fwAux.dll version information.

fwAux.dll's description is "AVG Firewall Helper library"

fwAux.dll is digitally signed by AVG Technologies USA, Inc..

fwAux.dll is usually located in the 'c:\Program Files\AVG\Antivirus\defs\19081500\' folder.

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

Vendor and version information [?]

The following is the available information on fwAux.dll:

PropertyValue
Product nameAVG Internet Security System
Company nameAVG Technologies CZ, s.r.o.
File descriptionAVG Firewall Helper library
Internal nameFwAux
Original filenameFwAux.dll
Legal copyrightCopyright (C) 2019 AVG Technologies CZ, s.r.o.
Product version18.0.598.0
File version18.0.598.0

Here's a screenshot of the file properties when displayed by Windows Explorer:

Product nameAVG Internet Security System
Company nameAVG Technologies CZ, s.r.o.
File descriptionAVG Firewall Helper library
Internal nameFwAux
Original filenameFwAux.dll
Legal copyrightCopyright (C) 2019 AVG Technologies ..
Product version18.0.598.0
File version18.0.598.0

Digital signatures [?]

fwAux.dll has a valid digital signature.

PropertyValue
Signer nameAVG Technologies USA, Inc.
Certificate issuer nameDigiCert SHA2 Assured ID Code Signing CA
Certificate serial number0918e230578f9f214a0bb1654db444d8

VirusTotal report

None of the 64 anti-virus programs at VirusTotal detected the fwAux.dll file.

None of the 64 anti-virus programs detected the fwAux.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\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.bin.dll"
    ],
    "file_opened": [
        "C:\\Windows\\System32\\en-US\\KERNELBASE.dll.mui",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.bin.dll"
    ],
    "command_line": [
        "\"C:\\Windows\\System32\\rundll32.exe\" C:\\Users\\cuck\\AppData\\Local\\Temp\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.bin.dll,DllMain"
    ],
    "file_exists": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.bin.dll.manifest",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.bin.dll"
    ],
    "file_read": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.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": 2816,
        "summary": {
            "dll_loaded": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.bin.dll"
            ],
            "file_opened": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.bin.dll"
            ],
            "command_line": [
                "\"C:\\Windows\\System32\\rundll32.exe\" C:\\Users\\cuck\\AppData\\Local\\Temp\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.bin.dll,DllMain"
            ],
            "file_exists": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.bin.dll.manifest",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.bin.dll"
            ],
            "file_read": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.bin.dll"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
            ]
        },
        "first_seen": 1565913185.6406,
        "ppid": 2016
    },
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1565913185.3281,
        "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\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.bin.dll.manifest",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.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"
            ],
            "dll_loaded": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\5cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9.bin.dll"
            ]
        },
        "first_seen": 1565913185.8125,
        "ppid": 2816
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "d:\\dev\\workspace\\Engine_Core_Final\\7ab1bb3e\\BUILDSENG\\Release\\x64\\fwAux.pdb",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "has_pdb"
    },
    {
        "markcount": 1,
        "families": [],
        "description": "The executable contains unknown PE section names indicative of a packer (could be a false positive)",
        "severity": 1,
        "marks": [
            {
                "category": "section",
                "ioc": ".didat",
                "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": 6.208447933197,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5442,
            "time": 6.1442859172821,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5770,
            "time": 4.1522238254547,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6098,
            "time": 6.1516778469086,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6426,
            "time": 4.654886007309,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6754,
            "time": 3.0472588539124,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 7082,
            "time": 4.2286009788513,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 18930,
            "time": 4.1824510097504,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 27314,
            "time": 6.2586879730225,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "1065e71042530b4d55650d4c5ea59f34042d8c77efb464cb6c7c2e6b82d1f0a2",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "d1ac2fbd6e18a58d3b1903cc3ada583474751270fc11f6dc8a9200ae1dc39c41",
    "irc": [],
    "https_ex": []
}

Screenshots

Screenshot from the sandboxScreenshot from the sandbox

Hashes [?]

PropertyValue
MD5ada9117b4d9b85c6ff2f9c5fd7b3ec0e
SHA2565cf0d02e52f0757afa249986688f95067e4ca04ddd9d99736dc9c82bfc3e7da9

What will you do with fwAux.dll?

To help other users, please let us know what you will do with fwAux.dll:



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.

Please select the option that best describe your thoughts on the information provided on this web page


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Comments

Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.

I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.

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