What is aswardisk.sys?

aswardisk.sys is part of Avast Antivirus and developed by AVAST Software according to the aswardisk.sys version information.

aswardisk.sys's description is "Avast anti rootkit disk filter"

aswardisk.sys is digitally signed by AVAST Software s.r.o..

aswardisk.sys is usually located in the 'C:\WINDOWS\system32\drivers\' folder.

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

Vendor and version information [?]

The following is the available information on aswardisk.sys:

PropertyValue
Product nameAvast Antivirus
Company nameAVAST Software
File descriptionAvast anti rootkit disk filter
Internal nameaswArDisk.sys
Original filenameaswArDisk.sys
Legal copyrightCopyright (c) 2019 AVAST Software
Product version19.8.4256.0
File version19.8.4256.0

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

Product nameAvast Antivirus
Company nameAVAST Software
File descriptionAvast anti rootkit disk filter
Internal nameaswArDisk.sys
Original filenameaswArDisk.sys
Legal copyrightCopyright (c) 2019 AVAST Software
Product version19.8.4256.0
File version19.8.4256.0

Digital signatures [?]

aswardisk.sys has a valid digital signature.

PropertyValue
Signer nameAVAST Software s.r.o.
Certificate issuer nameDigiCert High Assurance Code Signing CA-1
Certificate serial number07c70f7cab145bc1ed385fbe69fa3130

VirusTotal report

None of the 68 anti-virus programs at VirusTotal detected the aswardisk.sys file.

None of the 68 anti-virus programs detected the aswardisk.sys file.

Sandbox Report

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

Summary

Successfully executed process in sandbox.

Generic

[
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1570855984.3438,
        "ppid": 376
    },
    {
        "process_path": "C:\\Users\\cuck\\AppData\\Local\\Temp\\049576dd329a185ba8c948fe0e582ea9994d2d65d5fc06a97d7c79fd74fe50ff.bin",
        "process_name": "049576dd329a185ba8c948fe0e582ea9994d2d65d5fc06a97d7c79fd74fe50ff.bin",
        "pid": 2660,
        "summary": {},
        "first_seen": 1570855984.5781,
        "ppid": 1624
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "D:\\BUILD\\work\\00\\9f900bb44422fce3\\BUILDS\\Release\\x64\\aswArDisk.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": "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": "192.168.56.255",
            "offset": 662,
            "time": 6.2229328155518,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 2350,
            "time": 6.1830739974976,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 2678,
            "time": 4.1544268131256,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3006,
            "time": 6.1950860023499,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3334,
            "time": 4.6633880138397,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3662,
            "time": 3.0447328090668,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 3990,
            "time": 4.6597509384155,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 8466,
            "time": 4.1714358329773,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 12658,
            "time": 6.268501996994,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "8c592d0691939107200ba85bf8937bbafbad037ead0407389d2899a7aaa26780",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "26f0c3db81b0a195bf3af3d17583239c7d546d2ddc961e8cc3f6134b0c473fa0",
    "irc": [],
    "https_ex": []
}

Screenshots

Screenshot from the sandbox

Other files also named aswardisk.sys

aswardisk.sys (25 votes)

Hashes [?]

PropertyValue
MD52615d71853f78d464c601cd0a8d07d6f
SHA256049576dd329a185ba8c948fe0e582ea9994d2d65d5fc06a97d7c79fd74fe50ff

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Malware or legitimate?

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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.

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