What is mmcs.dll?

mmcs.dll is part of iCloud for Windows and developed by Apple Inc. according to the mmcs.dll version information.

mmcs.dll's description is "mmcs.dll"

mmcs.dll is digitally signed by Apple Inc..

mmcs.dll is usually located in the 'C:\Program Files (x86)\Common Files\Apple\Internet Services\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about mmcs.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 mmcs.dll file.

Sandbox Report

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

Summary

Successfully executed process in sandbox.

Summary

{
    "file_opened": [
        "C:\\Windows\\SysWOW64\\en-US\\KERNELBASE.dll.mui"
    ],
    "file_exists": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\fe64070d8727a2931001f5ad73cc0a0dd92edf4bf80c4660b79c0349253c8af3.bin.dll",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\fe64070d8727a2931001f5ad73cc0a0dd92edf4bf80c4660b79c0349253c8af3.bin.dll.manifest"
    ],
    "regkey_read": [
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\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\\fe64070d8727a2931001f5ad73cc0a0dd92edf4bf80c4660b79c0349253c8af3.bin.dll"
    ]
}

Generic

[
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1566906784.3281,
        "ppid": 376
    },
    {
        "process_path": "C:\\Windows\\SysWOW64\\rundll32.exe",
        "process_name": "rundll32.exe",
        "pid": 1676,
        "summary": {
            "file_opened": [
                "C:\\Windows\\SysWOW64\\en-US\\KERNELBASE.dll.mui"
            ],
            "file_exists": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\fe64070d8727a2931001f5ad73cc0a0dd92edf4bf80c4660b79c0349253c8af3.bin.dll",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\fe64070d8727a2931001f5ad73cc0a0dd92edf4bf80c4660b79c0349253c8af3.bin.dll.manifest"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\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\\fe64070d8727a2931001f5ad73cc0a0dd92edf4bf80c4660b79c0349253c8af3.bin.dll"
            ]
        },
        "first_seen": 1566906784.6094,
        "ppid": 2828
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "D:\\BWA\\94A5B5B6-B946-0\\mmcs-354.3\\srcroot\\Release\\mmcs.pdb",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "has_pdb"
    },
    {
        "markcount": 1,
        "families": [],
        "description": "The binary likely contains encrypted or compressed data indicative of a packer",
        "severity": 2,
        "marks": [
            {
                "entropy": 6.8000622300781,
                "section": {
                    "size_of_data": "0x00009000",
                    "virtual_address": "0x00080000",
                    "entropy": 6.8000622300781,
                    "name": ".reloc",
                    "virtual_size": "0x00008eae"
                },
                "type": "generic",
                "description": "A section with a high entropy has been found"
            }
        ],
        "references": [
            "http:\/\/www.forensickb.com\/2013\/03\/file-entropy-explained.html",
            "http:\/\/virii.es\/U\/Using%20Entropy%20Analysis%20to%20Find%20Encrypted%20and%20Packed%20Malware.pdf"
        ],
        "name": "packer_entropy"
    }
]

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": 3.077956199646,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4318,
            "time": 3.0400609970093,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4646,
            "time": 1.0172350406647,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4974,
            "time": 3.0515971183777,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5302,
            "time": 1.5198700428009,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5630,
            "time": -0.099697828292847,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 5958,
            "time": 1.5468211174011,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 13520,
            "time": 1.0474290847778,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 17712,
            "time": 3.1244370937347,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "66b32b9157004d5da6e95490b90a52a62f3ccd0e19131f28353a50162bcc738c",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "232d084cc9c77b8170e3697c3f78e373551e40da7a2cdcd7a4b8979b3f529b31",
    "irc": [],
    "https_ex": []
}

Screenshots

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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