What is MpOav.dll?
MpOav.dll is part of Microsoft® Windows® Operating System and developed by Microsoft Corporation according to the MpOav.dll version information.
MpOav.dll's description is "IOfficeAntiVirus Module"
MpOav.dll is digitally signed by Microsoft Windows.
MpOav.dll is usually located in the 'C:\ProgramData\Microsoft\Windows Defender\platform\4.18.1911.3-0\' folder.
None of the anti-virus scanners at VirusTotal reports anything malicious about MpOav.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 MpOav.dll:
| Property | Value |
|---|---|
| Product name | Microsoft® Windows® Operating System |
| Company name | Microsoft Corporation |
| File description | IOfficeAntiVirus Module |
| Internal name | MpOAV |
| Original filename | MpOAV.dll |
| Legal copyright | © Microsoft Corporation. All rights reserved. |
| Product version | 4.18.1911.3 |
| File version | 4.18.1911.3 (WinBuild.160101.0800) |
Here's a screenshot of the file properties when displayed by Windows Explorer:
| Product name | Microsoft® Windows® Operating System |
| Company name | Microsoft Corporation |
| File description | IOfficeAntiVirus Module |
| Internal name | MpOAV |
| Original filename | MpOAV.dll |
| Legal copyright | © Microsoft Corporation. All rights.. |
| Product version | 4.18.1911.3 |
| File version | 4.18.1911.3 (WinBuild.160101.0800) |
Digital signatures [?]
MpOav.dll has a valid digital signature.
| Property | Value |
|---|---|
| Signer name | Microsoft Windows |
| Certificate issuer name | Microsoft Windows Production PCA 2011 |
| Certificate serial number | 33000002313234cbafa8ab9a4d000000000231 |
VirusTotal report
None of the 67 anti-virus programs at VirusTotal detected the MpOav.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": [
"kernel32",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.bin.dll",
"C:\\Windows\\system32\\version.dll"
],
"file_opened": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.bin.dll"
],
"command_line": [
"\"C:\\Windows\\System32\\rundll32.exe\" C:\\Users\\cuck\\AppData\\Local\\Temp\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.bin.dll,DllMain"
],
"file_exists": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.bin.dll.manifest",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.bin.dll",
"C:\\Windows\\System32\\version.dll"
],
"file_read": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.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\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.bin.dll"
],
"file_opened": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.bin.dll"
],
"command_line": [
"\"C:\\Windows\\System32\\rundll32.exe\" C:\\Users\\cuck\\AppData\\Local\\Temp\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.bin.dll,DllMain"
],
"file_exists": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.bin.dll.manifest",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.bin.dll"
],
"file_read": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.bin.dll"
],
"regkey_read": [
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
]
},
"first_seen": 1575773584.71875,
"ppid": 1564
},
{
"process_path": "C:\\Windows\\System32\\lsass.exe",
"process_name": "lsass.exe",
"pid": 476,
"summary": {},
"first_seen": 1575773584.34375,
"ppid": 376
},
{
"process_path": "C:\\Windows\\System32\\rundll32.exe",
"process_name": "rundll32.exe",
"pid": 2828,
"summary": {
"file_exists": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.bin.dll.manifest",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.bin.dll",
"C:\\Windows\\System32\\version.dll"
],
"regkey_read": [
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
],
"dll_loaded": [
"kernel32",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab.bin.dll",
"C:\\Windows\\system32\\version.dll"
]
},
"first_seen": 1575773584.890625,
"ppid": 1512
}
]Signatures
[
{
"markcount": 1,
"families": [],
"description": "This executable has a PDB path",
"severity": 1,
"marks": [
{
"category": "pdb_path",
"ioc": "MpOAV.pdb",
"type": "ioc",
"description": null
}
],
"references": [],
"name": "has_pdb"
},
{
"markcount": 1,
"families": [],
"description": "The file contains an unknown PE resource name possibly indicative of a packer",
"severity": 1,
"marks": [
{
"category": "resource name",
"ioc": "REGISTRY",
"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": 6.193953990936279,
"dport": 137,
"sport": 137
},
{
"src": "192.168.56.101",
"dst": "224.0.0.252",
"offset": 5442,
"time": 6.1571619510650635,
"dport": 5355,
"sport": 51001
},
{
"src": "192.168.56.101",
"dst": "224.0.0.252",
"offset": 5770,
"time": 4.153145790100098,
"dport": 5355,
"sport": 53595
},
{
"src": "192.168.56.101",
"dst": "224.0.0.252",
"offset": 6098,
"time": 6.16874098777771,
"dport": 5355,
"sport": 53848
},
{
"src": "192.168.56.101",
"dst": "224.0.0.252",
"offset": 6426,
"time": 4.651554822921753,
"dport": 5355,
"sport": 54255
},
{
"src": "192.168.56.101",
"dst": "224.0.0.252",
"offset": 6754,
"time": 3.0292088985443115,
"dport": 5355,
"sport": 55314
},
{
"src": "192.168.56.101",
"dst": "239.255.255.250",
"offset": 7082,
"time": 4.664755821228027,
"dport": 1900,
"sport": 1900
},
{
"src": "192.168.56.101",
"dst": "239.255.255.250",
"offset": 16880,
"time": 4.172137975692749,
"dport": 3702,
"sport": 49152
},
{
"src": "192.168.56.101",
"dst": "239.255.255.250",
"offset": 25264,
"time": 6.235569000244141,
"dport": 1900,
"sport": 53598
}
],
"dns_servers": [],
"http": [],
"icmp": [],
"smtp": [],
"tcp": [],
"smtp_ex": [],
"mitm": [],
"hosts": [],
"pcap_sha256": "098bce2fcb47a22f1b9b3a4344c95451f6fc0104729b1d555d98fcbfea74aaaa",
"dns": [],
"http_ex": [],
"domains": [],
"dead_hosts": [],
"sorted_pcap_sha256": "6fbbaf0733abf63103d488a9648127635afc8964b05e437f80043a2006bd72e2",
"irc": [],
"https_ex": []
}Screenshots
Hashes [?]
| Property | Value |
|---|---|
| MD5 | b1708a57c4efbe1c9168dd05c5ea0337 |
| SHA256 | 0f330917ee68bb7857dae73a4d5f60b36c149715e50a471943f7c4dbd1cbd8ab |
What will you do with MpOav.dll?
To help other users, please let us know what you will do with MpOav.dll:
What did other users do?
The poll result listed below shows what users chose to do with MpOav.dll. 100% have voted for removal. Based on votes from 3 users.
| Votes | |||
|---|---|---|---|
| Keep | 0 % | 0 | |
| Remove | 100 % | 3 |
NOTE: Please do not use this poll as the only source of input to determine what you will do with MpOav.dll. Only 3 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.
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.
No comments posted yet.