What is gcapi.dll?

gcapi.dll is part of gcapi and developed by Google Inc. according to the gcapi.dll version information.

gcapi.dll's description is "gcapi"

gcapi.dll is usually located in the 'c:\Program Files\AnyDesk\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about gcapi.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 68 anti-virus programs at VirusTotal detected the gcapi.dll file.

Sandbox Report

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

Summary

Successfully executed process in sandbox.

Summary

{
    "file_exists": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\73170761d6776c0debacfbbc61b6988cb8270a20174bf5c049768a264bb8ffaf.bin.dll",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\73170761d6776c0debacfbbc61b6988cb8270a20174bf5c049768a264bb8ffaf.bin.dll.manifest"
    ],
    "regkey_read": [
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
    ],
    "dll_loaded": [
        "kernel32",
        "api-ms-win-core-fibers-l1-1-1",
        "api-ms-win-core-localization-l1-2-1",
        "api-ms-win-core-datetime-l1-1-1",
        "api-ms-win-core-localization-obsolete-l1-2-0",
        "api-ms-win-core-string-l1-1-0",
        "SHELL32.dll",
        "advapi32",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\73170761d6776c0debacfbbc61b6988cb8270a20174bf5c049768a264bb8ffaf.bin.dll",
        "api-ms-win-core-synch-l1-2-0"
    ]
}

Generic

[
    {
        "process_path": "C:\\Windows\\SysWOW64\\rundll32.exe",
        "process_name": "rundll32.exe",
        "pid": 2740,
        "summary": {
            "file_exists": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\73170761d6776c0debacfbbc61b6988cb8270a20174bf5c049768a264bb8ffaf.bin.dll",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\73170761d6776c0debacfbbc61b6988cb8270a20174bf5c049768a264bb8ffaf.bin.dll.manifest"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
            ],
            "dll_loaded": [
                "kernel32",
                "api-ms-win-core-fibers-l1-1-1",
                "api-ms-win-core-localization-l1-2-1",
                "api-ms-win-core-datetime-l1-1-1",
                "api-ms-win-core-localization-obsolete-l1-2-0",
                "api-ms-win-core-string-l1-1-0",
                "SHELL32.dll",
                "advapi32",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\73170761d6776c0debacfbbc61b6988cb8270a20174bf5c049768a264bb8ffaf.bin.dll",
                "api-ms-win-core-synch-l1-2-0"
            ]
        },
        "first_seen": 1593024785.625,
        "ppid": 1664
    },
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1593024785.34375,
        "ppid": 376
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "C:\\b\\build\\slave\\win\\build\\src\\out\\Release\\gcapi_dll.dll.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": ".gfids",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "pe_features"
    },
    {
        "markcount": 2,
        "families": [],
        "description": "Allocates read-write-execute memory (usually to unpack itself)",
        "severity": 2,
        "marks": [
            {
                "call": {
                    "category": "process",
                    "status": 1,
                    "stacktrace": [],
                    "api": "NtProtectVirtualMemory",
                    "return_value": 0,
                    "arguments": {
                        "process_identifier": 2740,
                        "stack_dep_bypass": 0,
                        "stack_pivoted": 0,
                        "heap_dep_bypass": 0,
                        "length": 4096,
                        "protection": 64,
                        "process_handle": "0xffffffff",
                        "base_address": "0x74f0a000"
                    },
                    "time": 1593024785.735,
                    "tid": 2436,
                    "flags": {
                        "protection": "PAGE_EXECUTE_READWRITE"
                    }
                },
                "pid": 2740,
                "type": "call",
                "cid": 10
            },
            {
                "call": {
                    "category": "process",
                    "status": 1,
                    "stacktrace": [],
                    "api": "NtProtectVirtualMemory",
                    "return_value": 0,
                    "arguments": {
                        "process_identifier": 2740,
                        "stack_dep_bypass": 0,
                        "stack_pivoted": 0,
                        "heap_dep_bypass": 0,
                        "length": 4096,
                        "protection": 64,
                        "process_handle": "0xffffffff",
                        "base_address": "0x74e81000"
                    },
                    "time": 1593024785.735,
                    "tid": 2436,
                    "flags": {
                        "protection": "PAGE_EXECUTE_READWRITE"
                    }
                },
                "pid": 2740,
                "type": "call",
                "cid": 12
            }
        ],
        "references": [],
        "name": "allocates_rwx"
    }
]

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": 6.1447389125823975,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5190,
            "time": 6.105736017227173,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5518,
            "time": 4.126946926116943,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5846,
            "time": 6.118696928024292,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6174,
            "time": 4.633769989013672,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 6502,
            "time": 2.961982011795044,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 6830,
            "time": 4.662501811981201,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 16628,
            "time": 4.162724018096924,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 25012,
            "time": 6.191715955734253,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "784a55a0b2ae63503634b50bfbf0ffb51ab4c08a15dc737e6cc5bcbf041d4507",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "fa8be085c51af4148283782c21751e6e841e5a83af06336a40f554da2c56fc6f",
    "irc": [],
    "https_ex": []
}

Screenshots

Folder name variants

gcapi.dll may also be located in other folders than c:\Program Files\AnyDesk\. The most common variants are listed below:

• c:\users\%USERNAME%\appdata\local\temp\
• c:\Windows\Temp\

What did other users do?

The poll result listed below shows what users chose to do with gcapi.dll. 84% have voted for removal. Based on votes from 102 users.

NOTE: Please do not use this poll as the only source of input to determine what you will do with gcapi.dll.

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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