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The Windows-KB890830-x64-V5.137.exe.exe (Microsoft Windows Malicious Software Removal Tool (KB890830)) File Analysis

Updated 16 days ago
Checked by Malware Check
Windows-KB890830-x64-V5.137.exe.exe

Technical Analysis

File Name Windows-KB890830-x64-V5.137.exe.exe
File Type
PE32+ executable (GUI) x86-64, for MS Windows
Scanner Version 1.0.231.174
Database Version 2025-12-24 04:00:47 UTC
✓

Clean File

No threats detected by our scanner

0%
Detection Rate
84,319,080
File Size (bytes)
2025-12-24
Analysis Date

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File Identification

Hash Type Value Action
MD5
0b0018b5b3e3fec03238f8a8986f561d
SHA1
dc0e0b97d146a92303d881bf9e2912299cbbbac5
SHA256
b5de43efbd6124953a78bbf4b4231e5858238a67d5f4bca8181f1d6ebd2ffa1d
SHA512
4c8617bb7ddf25eaccffc6b3e98a5650969cab7c2f6293fa48dd9d0cb2a2a5407367fed3d1b2a842813d8fc18ba805cf5aa91fff1f3ef22a3eafa4b0c128e7ad
ImpHash
4544210b95b3ae90a66426de1d660d76

PE Analysis

Basic Information

▼
Icon
Hash: b006398d9b80e0aab53e1d31d9e36759
Fuzzy: 3817709a8280a5927505cde0ffd73508
dHash: 488ee2e08e9ed4f4
Image Base 0x140000000
Entry Point 0x14000da50
Compilation Time 2025-11-13 17:49:33
Checksum 0x050777f9 (Actual: 0x050777f9)
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 7 Sections

Version Information

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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 5.138.25120.1002 (f548df5fe6cfb86e2733ecc5b08b7ce51ad9dd54)
ProductVersion 5.138.25120.1002
Translation 0x0409 0x04b0

PE Sections

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Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 163,762 bytes 163,840 bytes 6.43 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ 0BA5843D123AB5E9E64AD04C0AFFBC79
.rdata 0x00029000 73,018 bytes 73,728 bytes 5.52 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ EB8DD57B9EAC37697A9BCB883DAB111F
.data 0x0003b000 9,864 bytes 8,192 bytes 1.76 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 673639129449EFD65B7D919683C7E985
.pdata 0x0003e000 9,180 bytes 12,288 bytes 4.37 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ EF6FF08D5A175FD4F899BFB21B83D5CE
.fptable 0x00041000 256 bytes 4,096 bytes 0.00 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 620F0B67A91F7F74151BC5BE745B7110
.rsrc 0x00042000 83,304,160 bytes 83,304,448 bytes 8.00 (Packed/Encrypted) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ BADF8F7049CA53F12AEA82509DAADC57
.reloc 0x04fb4000 1,992 bytes 4,096 bytes 3.46 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_DISCARDABLE|IMAGE_SCN_MEM_READ 411C8270250D005933DAAE356495BEC0
Entropy Analysis Alert

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

Resource Analysis

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Total Resources: 6 (83,303,701 bytes)
Resource Type Count Total Size Percentage
CABINET 1 83,296,212 bytes
100%
RT_ICON 2 5,392 bytes
0%
RT_GROUP_ICON 1 34 bytes
0%
RT_VERSION 1 1,028 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 5.138.25120.1002 (f548df5fe6cfb86e2733ecc5b08b7ce51ad9dd54)
Original Name mrtstub.exe
Signing Date 05:51 PM 11/13/2025 (57 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 18:11:39 → 2026-06-17 18:11:39
Signature Algorithm: sha256RSA
Serial Number: 33 00 00 05 13 6E F5 3C D5 0E 65 D3 E0 00 00 00 00 05 13
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: 2025-01-30 19:42:55 → 2026-04-22 19:42:55
Signature Algorithm: sha256RSA
Serial Number: 33 00 00 02 09 08 07 E0 F9 5C 8C E6 55 00 01 00 00 02 09
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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