What is Update.exe?

Update.exe is part of Microsoft Teams and developed by Microsoft Corporation according to the Update.exe version information.

Update.exe's description is "Microsoft Teams"

Update.exe is digitally signed by Microsoft 3rd Party Application Component.

Update.exe is usually located in the 'c:\users\%USERNAME%\appdata\local\microsoft\teams\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about Update.exe.

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 Update.exe:

PropertyValue
Product nameMicrosoft Teams
Company nameMicrosoft Corporation
File descriptionMicrosoft Teams
Internal nameUpdate.exe
Original filenameUpdate.exe
CommentsMicrosoft Teams
Legal copyrightMicrosoft Corporation
Product version1.4.4.0
File version1.4.4.0

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

Product nameMicrosoft Teams
Company nameMicrosoft Corporation
File descriptionMicrosoft Teams
Internal nameUpdate.exe
Original filenameUpdate.exe
CommentsMicrosoft Teams
Legal copyrightMicrosoft Corporation
Product version1.4.4.0
File version1.4.4.0

Digital signatures [?]

Update.exe has a valid digital signature.

PropertyValue
Signer nameMicrosoft 3rd Party Application Component
Certificate issuer nameMicrosoft Code Signing PCA 2011
Certificate serial number3300000142a7effe5f98a6d05d000000000142

VirusTotal report

None of the 73 anti-virus programs at VirusTotal detected the Update.exe file.

None of the 73 anti-virus programs detected the Update.exe file.

Sandbox Report

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

Summary

Successfully executed process in sandbox.

Summary

{
    "dll_loaded": [
        "ADVAPI32.dll",
        "SHLWAPI.dll",
        "C:\\Windows\\system32\\IMM32.DLL",
        "gdi32.dll"
    ],
    "file_failed": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\e98ff80b53edf644def10526f1f3b408cf8c0ac1cf31ee7847e72c79e393a798.bin.config"
    ],
    "regkey_opened": [
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\Upgrades",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\Upgrades",
        "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework\\Policy\\Standards",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\Standards\\v4.0.30319",
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework",
        "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework",
        "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework\\Policy\\Upgrades",
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\Standards",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\AppPatch",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\v2.0",
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\Standards"
    ],
    "file_exists": [
        "C:\\Windows\\System32\\MSCOREE.DLL.local"
    ],
    "file_opened": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\e98ff80b53edf644def10526f1f3b408cf8c0ac1cf31ee7847e72c79e393a798.bin"
    ],
    "regkey_read": [
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\NoGuiFromShim",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\InstallRoot",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows NT\\CurrentVersion\\Windows\\LoadAppInit_DLLs",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\CLRLoadLogDir",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\OnlyUseLatestCLR"
    ],
    "directory_enumerated": [
        "C:\\Windows\\Microsoft.NET\\Framework\\v2.0.50727\\mscoreei.dll",
        "C:\\Windows\\Microsoft.NET\\Framework\\Upgrades.2.0.50727\\mscoreei.dll",
        "C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\mscorwks.dll"
    ]
}

Generic

[
    {
        "process_path": "C:\\Users\\cuck\\AppData\\Local\\Temp\\e98ff80b53edf644def10526f1f3b408cf8c0ac1cf31ee7847e72c79e393a798.bin",
        "process_name": "e98ff80b53edf644def10526f1f3b408cf8c0ac1cf31ee7847e72c79e393a798.bin",
        "pid": 2420,
        "summary": {
            "dll_loaded": [
                "ADVAPI32.dll",
                "SHLWAPI.dll",
                "C:\\Windows\\system32\\IMM32.DLL",
                "gdi32.dll"
            ],
            "file_failed": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\e98ff80b53edf644def10526f1f3b408cf8c0ac1cf31ee7847e72c79e393a798.bin.config"
            ],
            "regkey_opened": [
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\Upgrades",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\Upgrades",
                "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework\\Policy\\Standards",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\Standards\\v4.0.30319",
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework",
                "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework",
                "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework\\Policy\\Upgrades",
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\Standards",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\AppPatch",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\v2.0",
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\Standards"
            ],
            "file_exists": [
                "C:\\Windows\\System32\\MSCOREE.DLL.local"
            ],
            "file_opened": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\e98ff80b53edf644def10526f1f3b408cf8c0ac1cf31ee7847e72c79e393a798.bin"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\NoGuiFromShim",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\InstallRoot",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows NT\\CurrentVersion\\Windows\\LoadAppInit_DLLs",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\CLRLoadLogDir",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\OnlyUseLatestCLR"
            ],
            "directory_enumerated": [
                "C:\\Windows\\Microsoft.NET\\Framework\\v2.0.50727\\mscoreei.dll",
                "C:\\Windows\\Microsoft.NET\\Framework\\Upgrades.2.0.50727\\mscoreei.dll",
                "C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\mscorwks.dll"
            ]
        },
        "first_seen": 1585327985.671875,
        "ppid": 1268
    },
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1585327985.359375,
        "ppid": 376
    }
]

Signatures

[]

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": 6.122375965118408,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3462,
            "time": 6.080652952194214,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3790,
            "time": 4.128698110580444,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4118,
            "time": 6.092849016189575,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4446,
            "time": 4.626098155975342,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4774,
            "time": 2.9589619636535645,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 5102,
            "time": 4.637768030166626,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 11572,
            "time": 4.143168926239014,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 15764,
            "time": 6.184612035751343,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "086ff2aeaf35f651784ccaa74748d89648b495115f02a5cb6ea6b5f75a80d71f",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "ffcb2ffed23dbba3529eb358b21d97ac032a1c955a7652e244515a0c3fe47387",
    "irc": [],
    "https_ex": []
}

Screenshots

Screenshot from the sandbox

Other files also named Update.exe

Update.exe (196 votes)

Hashes [?]

PropertyValue
MD53bc18e68c56d218c5f28960e3a60c401
SHA256e98ff80b53edf644def10526f1f3b408cf8c0ac1cf31ee7847e72c79e393a798

Error Messages

These are some of the error messages that can appear related to update.exe:

update.exe has encountered a problem and needs to close. We are sorry for the inconvenience.

update.exe - Application Error. The instruction at "0xXXXXXXXX" referenced memory at "0xXXXXXXXX". The memory could not be "read/written". Click on OK to terminate the program.

Microsoft Teams has stopped working.

End Program - update.exe. This program is not responding.

update.exe is not a valid Win32 application.

update.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.

What will you do with Update.exe?

To help other users, please let us know what you will do with Update.exe:



What did other users do?

The poll result listed below shows what users chose to do with Update.exe. 100% have voted for removal. Based on votes from 2 users.

Votes
Keep0 %
0
Remove100 %
2

NOTE: Please do not use this poll as the only source of input to determine what you will do with Update.exe. Only 2 users has voted so far so it does not offer a high degree of confidence.

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.

Please select the option that best describe your thoughts on the information provided on this web page


Free online surveys

And now some shameless self promotion ;)

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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.

I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.

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