What is cmshusbser.sys?

cmshusbser.sys is part of QUALCOMM Incorporated USB Modem/Serial Device Driver and developed by QUALCOMM Incorporated according to the cmshusbser.sys version information.

cmshusbser.sys's description is "USB Modem/Serial Device Driver"

cmshusbser.sys is usually located in the 'c:\Windows\System32\DriverStore\FileRepository\cmshmdm.inf_amd64_neutral_57561b892219fc8b\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about cmshusbser.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 cmshusbser.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": 1581223984.34375,
        "ppid": 376
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "d:\\pcmodem\\and75_newsys\\hy11-vb717-29_2.0.8.4_addtimer\\objfre_win7_x86\\i386\\qcusbser.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": "224.0.0.252",
            "offset": 1098,
            "time": 4.139310836791992,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 1426,
            "time": 4.646852970123291,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 1754,
            "time": 3.032010793685913,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 2082,
            "time": 4.660496950149536,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 4294,
            "time": 4.173929929733276,
            "dport": 3702,
            "sport": 49152
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "19ed2bbe2937eba2a87b36dc19ff09a6868910ef6e590abac4ed243782c757d2",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "ff0f3873446bd74c55384f9ee2feeac0f3e036b6e0d9c73f5844e8fc1b0fa5f0",
    "irc": [],
    "https_ex": []
}

What did other users do?

The poll result listed below shows what users chose to do with cmshusbser.sys. 50% have voted for removal. Based on votes from 2 users.

NOTE: Please do not use this poll as the only source of input to determine what you will do with cmshusbser.sys. Only 2 users has voted so far so it does not offer a high degree of confidence.

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.

And now some shameless self promotion ;)

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