What is wuaueng2.dll?

wuaueng2.dll is part of Système d’exploitation Microsoft® Windows® and developed by Microsoft Corporation according to the wuaueng2.dll version information.

wuaueng2.dll's description is "Agent de mise à jour automatique Windows Update"

wuaueng2.dll is usually located in the 'c:\windows\system32\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about wuaueng2.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 71 anti-virus programs at VirusTotal detected the wuaueng2.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": [
        "dwmapi.dll",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll",
        "C:\\Windows\\system32\\uxtheme.dll"
    ],
    "file_opened": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll"
    ],
    "command_line": [
        "\"C:\\Windows\\System32\\rundll32.exe\" C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll,DllMain"
    ],
    "file_exists": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll.manifest"
    ],
    "file_read": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll"
    ],
    "regkey_read": [
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
    ]
}

Generic

[
    {
        "process_path": "C:\\Windows\\SysWOW64\\rundll32.exe",
        "process_name": "rundll32.exe",
        "pid": 1512,
        "summary": {
            "dll_loaded": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll"
            ],
            "file_opened": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll"
            ],
            "command_line": [
                "\"C:\\Windows\\System32\\rundll32.exe\" C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll,DllMain"
            ],
            "file_exists": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll.manifest"
            ],
            "file_read": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
            ]
        },
        "first_seen": 1588301586.640625,
        "ppid": 1564
    },
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1588301586.34375,
        "ppid": 376
    },
    {
        "process_path": "C:\\Windows\\System32\\rundll32.exe",
        "process_name": "rundll32.exe",
        "pid": 2588,
        "summary": {
            "file_exists": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll.manifest"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
            ],
            "dll_loaded": [
                "dwmapi.dll",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\57ec7f054627e8630cf8d8ae32cb19c41975aa47d06740f07cddb8c5c366d04a.bin.dll",
                "C:\\Windows\\system32\\uxtheme.dll"
            ]
        },
        "first_seen": 1588301586.8125,
        "ppid": 1512
    }
]

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": -1073741511,
                    "api": "IsDebuggerPresent",
                    "return_value": 0,
                    "arguments": {},
                    "time": 1588301157.596769,
                    "tid": 2500,
                    "flags": {}
                },
                "pid": 2588,
                "type": "call",
                "cid": 32
            }
        ],
        "references": [],
        "name": "checks_debugger"
    },
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "wuaueng.pdb",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "has_pdb"
    },
    {
        "markcount": 3,
        "families": [],
        "description": "The file contains an unknown PE resource name possibly indicative of a packer",
        "severity": 1,
        "marks": [
            {
                "category": "resource name",
                "ioc": "MUI",
                "type": "ioc",
                "description": null
            },
            {
                "category": "resource name",
                "ioc": "REGINST",
                "type": "ioc",
                "description": null
            },
            {
                "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": 662,
            "time": 6.1406409740448,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4434,
            "time": 6.073674917221069,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4762,
            "time": 4.1401848793029785,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5090,
            "time": 6.082669973373413,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5418,
            "time": 4.769803047180176,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5746,
            "time": 2.968829870223999,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 6074,
            "time": 4.232982873916626,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 16916,
            "time": 4.169596910476685,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 21108,
            "time": 6.188415050506592,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "1f2d08901d5ccc444add57eb778523c82cef3f98ece1bbaabd78ada6301e6d1b",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "8d1033209ffd5f0ca537fb84d9168f65cee362eae62db19b3e33b973231a4fe5",
    "irc": [],
    "https_ex": []
}

Screenshots

Other files also named wuaueng2.dll

wuaueng2.dll (4 votes)

Malware or legitimate?

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