What is vcruntime140_app.dll?

vcruntime140_app.dll is part of Microsoft® Visual Studio® 2017 and developed by Microsoft Corporation according to the vcruntime140_app.dll version information.

vcruntime140_app.dll's description is "Microsoft® C Runtime Library"

vcruntime140_app.dll is digitally signed by Windows Phone.

vcruntime140_app.dll is usually located in the 'c:\Program Files\WindowsApps\Microsoft.VCLibs.140.00_14.0.27810.0_x64__8wekyb3d8bbwe\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about vcruntime140_app.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 67 anti-virus programs at VirusTotal detected the vcruntime140_app.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\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.bin.dll"
    ],
    "file_opened": [
        "C:\\Windows\\System32\\en-US\\KERNELBASE.dll.mui",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.bin.dll"
    ],
    "command_line": [
        "\"C:\\Windows\\System32\\rundll32.exe\" C:\\Users\\cuck\\AppData\\Local\\Temp\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.bin.dll,DllMain"
    ],
    "file_exists": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.bin.dll",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.bin.dll.manifest"
    ],
    "file_read": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.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\\System32\\rundll32.exe",
        "process_name": "rundll32.exe",
        "pid": 2336,
        "summary": {
            "file_opened": [
                "C:\\Windows\\System32\\en-US\\KERNELBASE.dll.mui"
            ],
            "file_exists": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.bin.dll",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.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\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.bin.dll"
            ]
        },
        "first_seen": 1574113984.9531,
        "ppid": 2740
    },
    {
        "process_path": "C:\\Windows\\SysWOW64\\rundll32.exe",
        "process_name": "rundll32.exe",
        "pid": 2740,
        "summary": {
            "dll_loaded": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.bin.dll"
            ],
            "file_opened": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.bin.dll"
            ],
            "command_line": [
                "\"C:\\Windows\\System32\\rundll32.exe\" C:\\Users\\cuck\\AppData\\Local\\Temp\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.bin.dll,DllMain"
            ],
            "file_exists": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.bin.dll",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.bin.dll.manifest"
            ],
            "file_read": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\8772ccbc9a4d570db87df72c207fc8b8e025653d5fd19fc31aebb86d5751b413.bin.dll"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
            ]
        },
        "first_seen": 1574113984.7812,
        "ppid": 1664
    },
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1574113984.3438,
        "ppid": 376
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "d:\\agent\\_work\\1\\s\\\\binaries\\amd64ret\\bin\\amd64\\\\app\\\\vcruntime140_app.amd64.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": "_RDATA",
                "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": 6.2316989898682,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4434,
            "time": 6.1836109161377,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4762,
            "time": 4.1649928092957,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5090,
            "time": 6.1937758922577,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5418,
            "time": 4.6718499660492,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5746,
            "time": 3.0549509525299,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 6074,
            "time": 4.6846599578857,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 14756,
            "time": 4.1951968669891,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 18948,
            "time": 6.2704048156738,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "8376c0d1a79360d6b1a649e1375f831e54be45cba4670b8fc43a99799bde3280",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "3e57c87c09bd94a1bbdbed443e8d8bb9228839feeb0d3cc688451fe712f90ab7",
    "irc": [],
    "https_ex": []
}

Screenshots

Other files also named vcruntime140_app.dll

vcruntime140_app.dll (9 votes)

Malware or legitimate?

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