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The Windows-KB890830-x64-V5.135.exe (Microsoft Windows Malicious Software Removal Tool (KB890830)) File Analysis

Updated 3 months ago
Checked by Malware Check
Windows-KB890830-x64-V5.135.exe

Technical Analysis

File Name Windows-KB890830-x64-V5.135.exe
File Type
PE32+ executable (GUI) x86-64, for MS Windows
Scanner Version 1.0.225.174
Database Version 2025-09-23 11:00:25 UTC
✓

Clean File

No threats detected by our scanner

0%
Detection Rate
88,599,872
File Size (bytes)
2025-09-23
Analysis Date

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File Identification

Hash Type Value Action
MD5
d7a1ec41bd700f0543c5a268123402ce
SHA1
72c48060c5b80784333da5bef85e6d52fddb4b66
SHA256
b250c477e0b112f5972cc2b102e7dee5c6892686495e969c9602a0618ff228c2
SHA512
afd59f3a052f8a66b062afcaa1ae03e74037b81bb1f68bff1f4ced416f0d05abcc367f19a72315e6803961e2bf11955e1aea77bce349adc29b7339dba1d221b5
ImpHash
f15cf2504e08f37fb9e340373525a112

PE Analysis

Basic Information

▼
Icon
Hash: b006398d9b80e0aab53e1d31d9e36759
Fuzzy: 3817709a8280a5927505cde0ffd73508
dHash: 488ee2e08e9ed4f4
Image Base 0x140000000
Entry Point 0x14000d6f0
Compilation Time 2025-07-30 04:09:44
Checksum 0x05483ea1 (Actual: 0x05483ea1)
OS Version 10.0
PEiD Signatures PE32+ executable (GUI) x86-64, for MS Windows
PDB Path mrtstub.pdb
Digital Signature OK
Imports 6 libraries
ntdll, ADVAPI32, KERNEL32, WINTRUST, CRYPT32, RPCRT4
Exports 0 functions
Resources 6 Resources
Sections 6 Sections

Version Information

▼
CompanyName Microsoft Corporation
FileDescription Microsoft Windows Malicious Software Removal Tool (KB890830)
InternalName mrtstub.exe
LegalCopyright © Microsoft Corporation. All rights reserved.
OriginalFilename mrtstub.exe
ProductName Malicious Software Removal Tool
FileVersion 5.135.25080.1002 (4c26cf528b397c09d16dc4860d3519cea522f048)
ProductVersion 5.135.25080.1002
PrivateBuild GitEnlistment(ContainerAdministrator)
Translation 0x0409 0x04b0

PE Sections

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Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 161,314 bytes 163,840 bytes 6.38 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ 44EC5C8A08794DC8F8EFE8D4B37FFB9D
.rdata 0x00029000 71,994 bytes 73,728 bytes 5.45 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 8FAD25335E1DA789EC817DE92125805A
.data 0x0003b000 10,040 bytes 8,192 bytes 1.75 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 8F10A4D4438A0332DAA8341D71E1014F
.pdata 0x0003e000 9,036 bytes 12,288 bytes 4.31 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 2B7B9D9664B6937C07141981A4B7333A
.rsrc 0x00041000 87,548,460 bytes 87,552,000 bytes 8.00 (Packed/Encrypted) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 24E18822762E1420D50FD5C709E8D8FF
.reloc 0x053c0000 1,988 bytes 4,096 bytes 3.46 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_DISCARDABLE|IMAGE_SCN_MEM_READ 2BEC24291488130CF367BFFA18F3E446
Entropy Analysis Alert

1 section(s) with high entropy (≥7.5) detected - possible packing/encryption

Resource Analysis

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Total Resources: 6 (87,548,001 bytes)
Resource Type Count Total Size Percentage
CABINET 1 87,540,404 bytes
100%
RT_ICON 2 5,392 bytes
0%
RT_GROUP_ICON 1 34 bytes
0%
RT_VERSION 1 1,136 bytes
0%
RT_MANIFEST 1 1,035 bytes
0%

Certificate Chain Analysis

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Certificate Information
Product Malicious Software Removal Tool
Description Microsoft Windows Malicious Software Removal Tool (KB890830)
File Version 5.135.25080.1002 (4c26cf528b397c09d16dc4860d3519cea522f048)
Original Name mrtstub.exe
Signing Date 04:10 AM 07/30/2025 (164 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 mrtstub.exe
Copyright © Microsoft Corporation. All rights reserved.
Certificate Chain Summary
Microsoft Windows #1 Primary
Validity Period: 2025-06-19 18:11:38 → 2026-06-17 18:11:38
Signature Algorithm: sha256RSA
Serial Number: 33 00 00 05 12 EB 70 A2 4C 81 0A DC 53 00 00 00 00 05 12
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: 2024-07-25 18:31:18 → 2025-10-22 18:31:18
Signature Algorithm: sha256RSA
Serial Number: 33 00 00 01 FE D0 A8 C2 7B 34 21 0B 01 00 01 00 00 01 FE
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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