What is 5adfb9ad14e179817a78438eefd3a24e6b183b8b?

5adfb9ad14e179817a78438eefd3a24e6b183b8b is part of Microsoft Malware Protection and developed by Microsoft Corporation according to the 5adfb9ad14e179817a78438eefd3a24e6b183b8b version information.

5adfb9ad14e179817a78438eefd3a24e6b183b8b's description is "Microsoft Antimalware WU Stub"

5adfb9ad14e179817a78438eefd3a24e6b183b8b is digitally signed by Microsoft Corporation.

5adfb9ad14e179817a78438eefd3a24e6b183b8b is usually located in the 'c:\Windows\SoftwareDistribution\Download\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about 5adfb9ad14e179817a78438eefd3a24e6b183b8b.

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 5adfb9ad14e179817a78438eefd3a24e6b183b8b:

PropertyValue
Product nameMicrosoft Malware Protection
Company nameMicrosoft Corporation
File descriptionMicrosoft Antimalware WU Stub
Internal nameAM_Delta_Patch_1.299.1798.0.exe
Original filenameAM_Delta_Patch_1.299.1798.0.exe
Legal copyright© Microsoft Corporation. All rights reserved.
Product version1.299.1840.0
File version1.299.1840.0

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

Product nameMicrosoft Malware Protection
Company nameMicrosoft Corporation
File descriptionMicrosoft Antimalware WU Stub
Internal nameAM_Delta_Patch_1.299.1798.0.exe
Original filenameAM_Delta_Patch_1.299.1798.0.exe
Legal copyright© Microsoft Corporation. All rights..
Product version1.299.1840.0
File version1.299.1840.0

Digital signatures [?]

5adfb9ad14e179817a78438eefd3a24e6b183b8b has a valid digital signature.

PropertyValue
Signer nameMicrosoft Corporation
Certificate issuer nameMicrosoft Code Signing PCA
Certificate serial number33000001e37da31f8284dce4a10002000001e3

VirusTotal report

None of the 65 anti-virus programs at VirusTotal detected the 5adfb9ad14e179817a78438eefd3a24e6b183b8b file.

None of the 65 anti-virus programs detected the 5adfb9ad14e179817a78438eefd3a24e6b183b8b 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\\System32\\MpSigStub.exe"
    ],
    "file_exists": [
        "C:\\Windows\\System32\\advapi32.dll",
        "C:\\Windows\\System32\\version.dll"
    ],
    "regkey_opened": [
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Windows Defender\\MpEngine",
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Microsoft Antimalware\\MpEngine",
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Windows Defender\\Features",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\MpSigStub"
    ],
    "regkey_written": [
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\MpSigStub\\LastStartTime",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\MpSigStub\\LastExitCode"
    ],
    "dll_loaded": [
        "kernel32",
        "C:\\Windows\\system32\\advapi32.dll",
        "C:\\Windows\\system32\\version.dll"
    ]
}

Generic

[
    {
        "process_path": "C:\\Users\\cuck\\AppData\\Local\\Temp\\1ca87e49f4439ff1daabe323df8c64dc3cf063fcc974226409a591ff25802b80.bin",
        "process_name": "1ca87e49f4439ff1daabe323df8c64dc3cf063fcc974226409a591ff25802b80.bin",
        "pid": 2800,
        "summary": {
            "file_opened": [
                "C:\\Windows\\System32\\MpSigStub.exe"
            ],
            "file_exists": [
                "C:\\Windows\\System32\\advapi32.dll",
                "C:\\Windows\\System32\\version.dll"
            ],
            "regkey_opened": [
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Windows Defender\\MpEngine",
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Microsoft Antimalware\\MpEngine",
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Windows Defender\\Features",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\MpSigStub"
            ],
            "regkey_written": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\MpSigStub\\LastStartTime",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\MpSigStub\\LastExitCode"
            ],
            "dll_loaded": [
                "kernel32",
                "C:\\Windows\\system32\\advapi32.dll",
                "C:\\Windows\\system32\\version.dll"
            ]
        },
        "first_seen": 1565725986.5781,
        "ppid": 3040
    },
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1565725986.3438,
        "ppid": 376
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "MpWUStub.pdb",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "has_pdb"
    },
    {
        "markcount": 2,
        "families": [],
        "description": "The file contains an unknown PE resource name possibly indicative of a packer",
        "severity": 1,
        "marks": [
            {
                "category": "resource name",
                "ioc": "BINARY",
                "type": "ioc",
                "description": null
            },
            {
                "category": "resource name",
                "ioc": "CABINET",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "pe_unknown_resource_name"
    },
    {
        "markcount": 2,
        "families": [],
        "description": "The binary likely contains encrypted or compressed data indicative of a packer",
        "severity": 2,
        "marks": [
            {
                "entropy": 7.995605652902,
                "section": {
                    "size_of_data": "0x00041400",
                    "virtual_address": "0x0003c000",
                    "entropy": 7.995605652902,
                    "name": ".rsrc",
                    "virtual_size": "0x00041378"
                },
                "type": "generic",
                "description": "A section with a high entropy has been found"
            },
            {
                "entropy": 0.53869969040248,
                "type": "generic",
                "description": "Overall entropy of this PE file is high"
            }
        ],
        "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"
    },
    {
        "markcount": 1,
        "families": [],
        "description": "Expresses interest in specific running processes",
        "severity": 2,
        "marks": [
            {
                "category": "process",
                "ioc": "1ca87e49f4439ff1daabe323df8c64dc3cf063fcc974226409a591ff25802b80.bin",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "process_interest"
    },
    {
        "markcount": 1,
        "families": [],
        "description": "Attempts to identify installed AV products by registry key",
        "severity": 3,
        "marks": [
            {
                "category": "registry",
                "ioc": "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Microsoft Antimalware\\MpEngine",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "antiav_detectreg"
    }
]

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": 6.2200200557709,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 2350,
            "time": 6.1817309856415,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 2678,
            "time": 4.1570250988007,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3006,
            "time": 6.1936631202698,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3334,
            "time": 4.6607000827789,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3662,
            "time": 3.0508799552917,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 3990,
            "time": 4.2378509044647,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 9368,
            "time": 4.1978869438171,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 13560,
            "time": 6.2673330307007,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "b8c3c1d09ac688dbc54f262748afeffcfd8d15942ff45b96d520a5ce8786e4da",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "bfaca270f6e93f15899756f90821b6e67a3e5898418773388789a4967fa0c5b3",
    "irc": [],
    "https_ex": []
}

Screenshots

Screenshot from the sandbox

Hashes [?]

PropertyValue
MD540b6a7f4ed4952bac52809541b7de715
SHA2561ca87e49f4439ff1daabe323df8c64dc3cf063fcc974226409a591ff25802b80

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Malware or legitimate?

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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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