What is wuaueng2.dll?

wuaueng2.dll is part of Microsoft® Windows® Operating System and developed by Microsoft Corporation according to the wuaueng2.dll version information.

wuaueng2.dll's description is "Windows Update Agent"

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.

Vendor and version information [?]

The following is the available information on wuaueng2.dll:

PropertyValue
Product nameMicrosoft® Windows® Operating System
Company nameMicrosoft Corporation
File descriptionWindows Update Agent
Internal namewuaueng.dll
Original filenamewuaueng.dll
Legal copyright© Microsoft Corporation. All rights reserved.
Product version7.6.7601.24542
File version7.6.7601.24542 (win7sp1_ldr_escrow.191209-2211)

Here's a screenshot of the file properties when displayed by Windows Explorer:

Product nameMicrosoft® Windows® Operating System
Company nameMicrosoft Corporation
File descriptionWindows Update Agent
Internal namewuaueng.dll
Original filenamewuaueng.dll
Legal copyright© Microsoft Corporation. All rights..
Product version7.6.7601.24542
File version7.6.7601.24542 (win7sp1_ldr_escrow.1..

Digital signatures [?]

wuaueng2.dll is not signed.

VirusTotal report

None of the 71 anti-virus programs at VirusTotal detected the wuaueng2.dll file.

None of the 71 anti-virus programs 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:\\Windows\\system32\\uxtheme.dll",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.bin.dll"
    ],
    "file_opened": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.bin.dll"
    ],
    "command_line": [
        "\"C:\\Windows\\System32\\rundll32.exe\" C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.bin.dll,DllMain"
    ],
    "file_exists": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.bin.dll.manifest",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.bin.dll"
    ],
    "file_read": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.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": 2816,
        "summary": {
            "dll_loaded": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.bin.dll"
            ],
            "file_opened": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.bin.dll"
            ],
            "command_line": [
                "\"C:\\Windows\\System32\\rundll32.exe\" C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.bin.dll,DllMain"
            ],
            "file_exists": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.bin.dll.manifest",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.bin.dll"
            ],
            "file_read": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.bin.dll"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
            ]
        },
        "first_seen": 1593564786.65625,
        "ppid": 2016
    },
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1593564786.421875,
        "ppid": 376
    },
    {
        "process_path": "C:\\Windows\\System32\\rundll32.exe",
        "process_name": "rundll32.exe",
        "pid": 2588,
        "summary": {
            "file_exists": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.bin.dll.manifest",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.bin.dll"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
            ],
            "dll_loaded": [
                "dwmapi.dll",
                "C:\\Windows\\system32\\uxtheme.dll",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a.bin.dll"
            ]
        },
        "first_seen": 1593564786.828125,
        "ppid": 2816
    }
]

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": 1593564787.063125,
                    "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": 6.20123291015625,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4434,
            "time": 6.133825063705444,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4762,
            "time": 4.136941909790039,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5090,
            "time": 6.14090895652771,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5418,
            "time": 4.7681379318237305,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 5746,
            "time": 3.035106897354126,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 6074,
            "time": 4.701709032058716,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 13636,
            "time": 4.1723809242248535,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 17828,
            "time": 6.249237060546875,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "a5edb164f2a1d80eac51b541e61d2f913087df9aaa1e1d7168a04f89f28e5b60",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "a133a01d6d34b6e424a9eabf21fe2f9861330e8e84226d578c3d9aaef9910518",
    "irc": [],
    "https_ex": []
}

Screenshots

Screenshot from the sandbox

Other files also named wuaueng2.dll

wuaueng2.dll (4 votes)

Hashes [?]

PropertyValue
MD5283a199f49543e6a89c9c731d15284a0
SHA256b6b2c1f1e4e8800360e7735859129052f9860c802e46efc95afba0366d34c21a

What will you do with wuaueng2.dll?

To help other users, please let us know what you will do with wuaueng2.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.

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Comments

Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.

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