What is CptInstall.exe?

CptInstall.exe is part of Zoom Video Call and developed by Zoom Video Communications, Inc. according to the CptInstall.exe version information.

CptInstall.exe's description is "Zoom Sharing"

CptInstall.exe is digitally signed by Zoom Video Communications, Inc..

CptInstall.exe is usually located in the 'c:\users\%USERNAME%\appdata\local\temp\' folder.

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

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 69 anti-virus programs at VirusTotal detected the CptInstall.exe 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:\\Users\\cuck\\AppData\\Local\\Temp\\37a29a6bec4f6eac17aa042318b1e6508909cc11562adef39a3ac2912d6b1705.bin",
        "process_name": "37a29a6bec4f6eac17aa042318b1e6508909cc11562adef39a3ac2912d6b1705.bin",
        "pid": 2816,
        "summary": {},
        "first_seen": 1583895187.640625,
        "ppid": 2016
    },
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1583895187.328125,
        "ppid": 376
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "Checks if process is being debugged by a debugger",
        "severity": 1,
        "marks": [
            {
                "call": {
                    "category": "system",
                    "status": 0,
                    "stacktrace": [],
                    "last_error": 0,
                    "nt_status": -1073741515,
                    "api": "IsDebuggerPresent",
                    "return_value": 0,
                    "arguments": {},
                    "time": 1583895187.734625,
                    "tid": 2420,
                    "flags": {}
                },
                "pid": 2816,
                "type": "call",
                "cid": 2
            }
        ],
        "references": [],
        "name": "checks_debugger"
    },
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "d:\\ZoomCode\\EP\\bin\\Release\\CptInstall.pdb",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "has_pdb"
    },
    {
        "markcount": 1,
        "families": [],
        "description": "Foreign language identified in PE resource",
        "severity": 2,
        "marks": [
            {
                "name": "RT_VERSION",
                "language": "LANG_CHINESE",
                "offset": "0x000090a0",
                "filetype": "data",
                "sublanguage": "SUBLANG_CHINESE_SIMPLIFIED",
                "type": "generic",
                "size": "0x00000388"
            }
        ],
        "references": [],
        "name": "origin_langid"
    }
]

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": 6.1948230266571045,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 2134,
            "time": 6.137598991394043,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 2462,
            "time": 4.143179893493652,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 2790,
            "time": 6.150068998336792,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3118,
            "time": 4.652220964431763,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3446,
            "time": 3.027521848678589,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 3774,
            "time": 4.66371488571167,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 7102,
            "time": 4.164482831954956,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 11294,
            "time": 6.242401838302612,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "6745fd0cb1dfc8ccac745fc33343c02762bf4a169ee663d9d014e44c04bca0ee",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "d7cc51909edc9344fc75d196a43d7138eb94af21c4819d940ca9128fa95d5a3b",
    "irc": [],
    "https_ex": []
}

Screenshots

Error Messages

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.

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