What is klwtp.sys?

klwtp.sys is part of Coretech Delivery and developed by AO Kaspersky Lab according to the klwtp.sys version information.

klwtp.sys's description is "WFP Network Connection Filter Driver [fre_win7_amd64]"

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

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

PropertyValue
Product nameCoretech Delivery
Company nameAO Kaspersky Lab
File descriptionWFP Network Connection Filter Driver [fre_win7_amd64]
Internal nameklwtp
Legal copyright© 2019 AO Kaspersky Lab. All Rights Reserved.
Legal trademarkRegistered trademarks and service marks are the property of their respective owners
Product version30.147.71.0
File version30.147.71.0

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

Product nameCoretech Delivery
Company nameAO Kaspersky Lab
File descriptionWFP Network Connection Filter Driver..
Internal nameklwtp
Legal copyright© 2019 AO Kaspersky Lab. All Rights..
Legal trademarkRegistered trademarks and service ma..
Product version30.147.71.0
File version30.147.71.0

Digital signatures [?]

The verification of klwtp.sys's digital signature failed.

PropertyValue
Signer nameKaspersky Lab
Certificate issuer nameDigiCert High Assurance Code Signing CA-1
Certificate serial number0f9d91c6aba86f4e54cbb9ef57e68346

VirusTotal report

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

None of the 73 anti-virus programs detected the klwtp.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": 1584442385.34375,
        "ppid": 376
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "C:\\a\\b\\a_4E38C9BD_\\b\\out_x64\\Release\\si.kernel.klwtp\\klwtp.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": "PAGE",
                "type": "ioc",
                "description": null
            },
            {
                "category": "section",
                "ioc": "INIT",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "pe_features"
    },
    {
        "markcount": 1,
        "families": [],
        "description": "The file contains an unknown PE resource name possibly indicative of a packer",
        "severity": 1,
        "marks": [
            {
                "category": "resource name",
                "ioc": "WEVT_TEMPLATE",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "pe_unknown_resource_name"
    }
]

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": 546,
            "time": 3.0793709754943848,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 2018,
            "time": 3.0368080139160156,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 2182,
            "time": 1.0487370491027832,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 2510,
            "time": 3.0508880615234375,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 2674,
            "time": 1.5513720512390137,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3002,
            "time": -0.08051204681396484,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 3330,
            "time": 1.563460111618042,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 6658,
            "time": 1.0824029445648193,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 10850,
            "time": 3.109699010848999,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "8b121bf096f5f58d3f7c6c1c8a43af5604b0267fcb30d36327762fa655a7104e",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "710e20737a8c70ef3d9f7cba5d64fa76f4ee1a8839b59f70968112629af8cce6",
    "irc": [],
    "https_ex": []
}

Screenshots

Screenshot from the sandbox

Other files also named klwtp.sys

klwtp.sys (17 votes)

Hashes [?]

PropertyValue
MD5c765b5d5e3180b46798ad4485670c74b
SHA25619a150e2967c02a7681aae5818271dd83501536bd0d3f83f3a8aece34504f993

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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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