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The winload.exe.mui (OS Loader) File Analysis

Updated 2 months ago
Checked by Malaware Check
winload.exe.mui

Technical Analysis

File Name winload.exe.mui
File Type
PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
Scanner Version 1.0.210.174
Database Version 2025-03-12 23:00:44 UTC
✓

Clean File

No threats detected by our scanner

0%
Detection Rate
34,104
File Size (bytes)
2025-03-12
Analysis Date

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File Identification

Hash Type Value Action
MD5
bdc9225b63f949d12360faaaeacbdc6c
SHA1
9d02f800e1c13096b064c056cc458dd381cf40cb
SHA256
1c46be61886bd64fcd14335a8707da3a15a33c847a17dcba6801dcbd91a81bb6
SHA512
becc2ed51471ea4e47a2226efbbd43199b7ff0f1a173904df1ab960f15399cd27386a8b27cd2cc84e647a28a39c9c304e52670590ea26e5af20bfa9e81f9955b

PE Analysis

Basic Information

▼
Image Base 0x10000000
Entry Point 0x10000000
Compilation Time 2008-10-09 23:57:06
Checksum 0x0001363d (Actual: 0x0001363d)
OS Version 5.0
PEiD Signatures PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
Digital Signature OK
Imports 0
Exports 0 functions
Resources 4 Resources
Sections 1 Sections

Version Information

▼
CompanyName Microsoft Corporation
FileDescription OS Loader
FileVersion 10.0.19041.3636 (WinBuild.160101.0800)
InternalName osloader.exe
LegalCopyright © Корпорация Майкрософт. Все права защищены.
OriginalFilename osloader.exe
ProductName Операционная система Microsoft® Windows®
ProductVersion 10.0.19041.3636
Translation 0x0419 0x04b0

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.rsrc 0x00001000 24,576 bytes 23,552 bytes 4.25 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 27E423D4841C9D702E99D6CD20A8CC42

Resource Analysis

▼
Total Resources: 4 (23,094 bytes)
Resource Type Count Total Size Percentage
MUI 1 184 bytes
0.8%
RT_MESSAGETABLE 1 7,176 bytes
31.1%
RT_VERSION 1 908 bytes
3.9%
RT_HTML 1 14,826 bytes
64.2%

Certificate Chain Analysis

▼
Certificate Information
Product Операционная система Microsoft® Windows®
Description OS Loader
File Version 10.0.19041.3636 (WinBuild.160101.0800)
Original Name osloader.exe
Signing Date 10:36 AM 10/20/2023 (596 days ago)
Verification Status Signed
Signers Microsoft Windows; Microsoft Windows Production PCA 2011; Microsoft Root Certificate Authority 2010
Counter Signers Microsoft Time-Stamp Service; Microsoft Time-Stamp PCA 2010; Microsoft Root Certificate Authority 2010
Internal Name osloader.exe
Copyright © Корпорация Майкрософт. Все права защищены.
Certificate Chain Summary
Microsoft Windows #1 Primary
Validity Period: 2023-02-03 00:05:42 → 2024-02-01 00:05:42
Signature Algorithm: sha256RSA
Serial Number: 33 00 00 04 15 82 95 A1 A3 D8 2E 28 57 00 00 00 00 04 15
Microsoft Windows Production PCA 2011 #2 Chain
Validity Period: 2011-10-19 18:41:42 → 2026-10-19 18:51:42
Signature Algorithm: sha256RSA
Serial Number: 61 07 76 56 00 00 00 00 00 08
Microsoft Time-Stamp Service #3 Chain
Validity Period: 2023-05-25 19:12:14 → 2024-02-01 19:12:14
Signature Algorithm: sha256RSA
Serial Number: 33 00 00 01 D0 77 08 AA EF A3 17 C6 DD 00 01 00 00 01 D0
Microsoft Time-Stamp PCA 2010 #4 Chain
Validity Period: 2021-09-30 18:22:25 → 2030-09-30 18:32:25
Signature Algorithm: sha256RSA
Serial Number: 33 00 00 00 15 C5 E7 6B 9E 02 9B 49 99 00 00 00 00 00 15

✓ This file has been digitally signed and the certificate chain has been verified

  • The signature ensures file integrity and authenticity from the publisher
  • Timestamping proves when the signature was applied
Certificate Verification Status

OK

Remember: This is Result of Online Virus Scanner

Gridinsoft Anti-Malware has a much more powerful virus scanning engine. We recommend using it for a more precise diagnosis of infected systems. This brief guide will help you install our flagship product for more accurate diagnostics:

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Keep Your System Protected

This file appears clean, but regular security maintenance is important

  1. Regular Scans: Run weekly system scans to detect new threats before they can cause damage.
  2. Keep Software Updated: Ensure your operating system and all applications have the latest security patches.
  3. Safe Browsing: Avoid suspicious websites and never download software from untrusted sources.
  4. Email Security: Be cautious with email attachments and links, even from known contacts.
Proactive Protection
This file passed all security checks, but stay vigilant. New malware variants appear daily that can evade detection. Always verify files come from official sources and check digital signatures when available.

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