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The microsoft-installer.exe (Microsoft Office Setup Assistant) File Analysis

Technical Analysis

File Name microsoft-installer.exe
File Type
PE32+ executable (console) x86-64, for MS Windows
Scanner Version 1.0.230.174
Database Version 2025-12-09 21:00:24 UTC

Clean File

No threats detected by our scanner

0%
Detection Rate
11,614,288
File Size (bytes)
2025-12-09
Analysis Date

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File Identification

Hash Type Value Action
MD5
8cc945aec03dc97e7e137edc62c62db8
SHA1
6be8470f9ab1081c168e10b6616af6de1036d0de
SHA256
0096d93ff6b5cb1564af02f3988ea81d80a46d4b07fa88d1708b3876ddcc295b
SHA512
4b64f12ecee5639f6fdfdc4412cfa4923e353e38602725c167eab9e3e1531562695729ad25c495ab9b86b153a003bf3aa6f25f5001c7276fe9082874f8240fd8
ImpHash
4f531ad62bdd793a20c52fc319209844

PE Analysis

Basic Information

Icon
Hash: 88f05ea6c8d8a4845731c6d1991fa68b
Fuzzy: c98f96d6ffe5af8d4eb0870c1dc20826
dHash: b2e1b496a6cada72
Image Base 0x140000000
Entry Point 0x1407bc66c
Compilation Time 2025-07-02 23:16:53
Checksum 0x00b1d47e (Actual: 0x00b1d47e)
OS Version 6.0
PEiD Signatures PE32+ executable (console) x86-64, for MS Windows
PDB Path microsoft_installer.pdb
Digital Signature OK
Imports 16 libraries
Exports 0 functions
Resources 4 Resources
Sections 7 Sections

Version Information

InternalName MSOfficeSetup
OriginalFilename microsoft-installer.exe
ProductName Microsoft Office Installer
LegalCopyright © Microsoft Corporation. All rights reserved.
CompanyName Microsoft Corporation
ProductVersion 1.0.0.0
FileVersion 1.0.0.0
FileDescription Microsoft Office Setup Assistant
Translation 0x0000 0x04b0

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 8,190,928 bytes 8,190,976 bytes 5.74 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ D7534501B97470CD0F288C53A38A4C06
.rdata 0x007d1000 2,779,660 bytes 2,780,160 bytes 5.30 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ FB0618A38E2D230384CA309B8C44E329
.data 0x00a78000 29,584 bytes 15,360 bytes 2.48 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 4F646DDB33B442CF97941BA5964A1993
.pdata 0x00a80000 556,548 bytes 557,056 bytes 6.52 (Compressed) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 24D0EEE2C6315419A265921C54A4523D
.fptable 0x00b08000 256 bytes 512 bytes 0.00 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE BF619EAC0CDF3F68D496EA9344137E8B
.rsrc 0x00b09000 4,792 bytes 5,120 bytes 4.97 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ D8CC41C50D52A6EE55F3BF86038E547A
.reloc 0x00b0b000 53,916 bytes 54,272 bytes 5.47 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_DISCARDABLE|IMAGE_SCN_MEM_READ BBF43CBA5AC6F0ED28EEBA87D8AB2693
Entropy Analysis Alert

1 section(s) with elevated entropy (≥6.5) - possible compression

Resource Analysis

Total Resources: 4 (4,474 bytes)
Resource Type Count Total Size Percentage
RT_ICON 1 2,216 bytes
49.5%
RT_GROUP_ICON 1 20 bytes
0.4%
RT_VERSION 1 868 bytes
19.4%
RT_MANIFEST 1 1,370 bytes
30.6%

Certificate Chain Analysis

Certificate Information
Product Microsoft Office Installer
Description Microsoft Office Setup Assistant
File Version 1.0.0.0
Original Name microsoft-installer.exe
Signing Date 11:25 PM 07/02/2025 (191 days ago)
Verification Status Signed
Signers Flex Events B.V.; SSL.com EV Code Signing Intermediate CA RSA R3; SSL.com EV Root Certification Authority RSA R2
Counter Signers SSL.com Timestamping Unit 2024 E1; SSL.com Timestamping Issuing RSA CA R1; SSL.com Root Certification Authority RSA
Internal Name MSOfficeSetup
Copyright © Microsoft Corporation. All rights reserved.
Certificate Chain Summary
SSL.com EV Root Certification Authority RSA R2 #1 Primary
Validity Period: 2017-05-31 18:14:37 → 2042-05-30 18:14:37
Signature Algorithm: sha256RSA
Serial Number: 56 B6 29 CD 34 BC 78 F6
Flex Events B.V. #2 Chain
Validity Period: 2024-11-06 01:44:15 → 2025-11-06 01:42:55
Signature Algorithm: sha256RSA
Serial Number: 6F 4B D2 2C C8 F2 67 ED 4E A5 77 F8 D4 F2 B2 E0
SSL.com EV Code Signing Intermediate CA RSA R3 #3 Chain
Validity Period: 2019-03-26 17:44:23 → 2034-03-22 17:44:23
Signature Algorithm: sha256RSA
Serial Number: 42 4B 6A 53 CE C7 66 14 1C 2A 63 B1 A5 1C 41 04
SSL.com Timestamping Unit 2024 E1 #4 Chain
Validity Period: 2024-02-19 16:18:19 → 2034-02-16 16:18:18
Signature Algorithm: sha256RSA
Serial Number: 5A 5A AC E8 1A 35 6E B4 62 86 8D 57 7D E0 3D C7
SSL.com Timestamping Issuing RSA CA R1 #5 Chain
Validity Period: 2019-11-13 18:50:05 → 2034-11-12 18:50:05
Signature Algorithm: sha256RSA
Serial Number: 6D 52 18 70 87 E8 23 4D 85 60 00 D0 80 8F 93 56

✓ 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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