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The aui.8756241008.exe (Microsoft Antimalware WU Stub) File Analysis

Updated 3 months ago
Checked by Malware Check
aui.8756241008.exe

Technical Analysis

File Name aui.8756241008.exe
File Type
Win32 EXE
Magic Bytes PE32+ executable (GUI) x86-64, for MS Windows
SSDEEP Hash
393216:RKmZuJXsmJ7coYzTiWwoVDVmfC3U8CNluI3Vaqv8Wqud76tGboYrChZZROu8WLAP:nwOD82k3L1qBw
Scanner Version 1.0.226.174
Database Version 2025-10-01 11:00:43 UTC
⚠

Suspicious File Detected

Detected by 7 security engines - requires caution

This file requires additional checking for potential threats. Based on suspicious indicators, we will soon add it to our virus database.
10%
Detection Rate
79,463,636
File Size (bytes)
7/71
Engines Detected
2025-10-01
Analysis Date

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File Identification

Hash Type Value Action
MD5
c30bec888d243536f66af29438cfdd22
SHA1
03c502efdbd0892667638252b27bcd1f080d5af6
SHA256
1c4b6b9c2fadda863748af855dc6f34bc43f716cc9368d8ed8b32f6f8eecc007
SHA512
27baeeb5a850939962cb130b31f4b4d92bbd654b33e37b88a05a8186bd808df2f787eff2d68161bb6a805d5389a0d4556b7c97c6e7aa58a5ad7d8962aa2622f3
ImpHash
c329cfdce996b315359260e710fbdc76

Security Engines with Detections (7 of 71)

Bkav
W64.AIDetectMalware Malicious
AVG
Win64:MalwareX-gen [Hack] Malicious
Malwarebytes
Malware.AI.4058338516 Malicious
Kaspersky
UDS:Trojan.Win32.EtwTamper Malicious
Avast
Win64:MalwareX-gen [Hack] Malicious
AhnLab-V3
Trojan/Win.Generic.R705838 Malicious
Cylance
Unsafe Malicious
64 engines reported no threats - Only engines with detections are shown above for clarity

PE Analysis

Basic Information

▼
Image Base 0x140000000
Entry Point 0x140009770
Compilation Time 2025-07-22 06:21:15
Checksum 0x00083c9e (Actual: 0x04bcd591)
OS Version 10.0
PEiD Signatures PE32+ executable (GUI) x86-64, for MS Windows
Digital Signature The expected hash does not match the digest in SpcInfo
Imports 4 libraries
ADVAPI32, KERNEL32, RPCRT4, ntdll
Exports 0 functions
Resources 4 Resources
Sections 6 Sections

Version Information

▼
CompanyName Microsoft Corporation
FileDescription Microsoft Antimalware WU Stub
InternalName AM_Delta_Patch_1.431.814.0.exe
LegalCopyright © Microsoft Corporation. All rights reserved.
OriginalFilename AM_Delta_Patch_1.431.814.0.exe
ProductName Microsoft Malware Protection
FileVersion 1.431.820.0
ProductVersion 1.431.820.0
StubName WuStubFinal
StubVersion 1.1.24010.2001
Translation 0x0409 0x04b0

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 187,490 bytes 188,416 bytes 6.45 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ B18BA13953B217BDC720196F8FC0A9A5
.rdata 0x0002f000 57,068 bytes 57,344 bytes 5.07 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 6968D8814C787F288D0B82E4AD91097E
.data 0x0003d000 66,784 bytes 61,440 bytes 7.37 (Compressed) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 3355AE0E2BE2A46036EA495C4CB63635
.pdata 0x0004e000 8,388 bytes 12,288 bytes 4.05 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 3109C9D17CEEF01B26ABB9C2CFCE5B5D
.rsrc 0x00051000 259,452 bytes 262,144 bytes 7.99 (Packed/Encrypted) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 54D4081615846072CB471EC66667E792
.reloc 0x00091000 1,552 bytes 4,096 bytes 2.91 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_DISCARDABLE|IMAGE_SCN_MEM_READ 291AC0FE645F34BD2A6FED557BB6ED7D
Entropy Analysis Alert

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

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

Resource Analysis

▼
Total Resources: 4 (259,063 bytes)
Resource Type Count Total Size Percentage
BINARY 1 1 bytes
0%
CABINET 1 256,583 bytes
99%
RT_VERSION 1 1,548 bytes
0.6%
RT_MANIFEST 1 931 bytes
0.4%

Certificate Chain Analysis

▼
Certificate Information
Product Microsoft Malware Protection
Description Microsoft Antimalware WU Stub
File Version 1.431.820.0
Original Name AM_Delta_Patch_1.431.814.0.exe
Internal Name AM_Delta_Patch_1.431.814.0.exe
Copyright © Microsoft Corporation. All rights reserved.
Certificate Chain Summary
Microsoft Windows Code Signing PCA 2024 #1 Primary
Validity Period: 2024-08-08 21:36:23 → 2035-06-23 22:04:01
Signature Algorithm: sha384RSA
Serial Number: 33 00 00 00 1C 48 9F 81 DF A1 B0 B7 77 00 00 00 00 00 1C
Microsoft Corporation #2 Chain
Validity Period: 2025-05-08 18:24:50 → 2026-05-06 18:24:50
Signature Algorithm: sha384RSA
Serial Number: 33 00 00 00 84 B6 D5 F8 6E A3 41 32 1D 00 00 00 00 00 84
Microsoft Time-Stamp Service #3 Chain
Validity Period: 2024-07-25 18:30:59 → 2025-10-22 18:30:59
Signature Algorithm: sha256RSA
Serial Number: 33 00 00 01 F4 17 46 85 C0 CB 3F 39 E5 00 01 00 00 01 F4
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
Microsoft Time-Stamp Service #5 Chain
Validity Period: 2008-07-25 19:13:45 → 2011-07-25 19:23:45
Signature Algorithm: sha1RSA
Serial Number: 61 04 B3 F5 00 00 00 00 00 0D
Microsoft Windows #6 Chain
Validity Period: 2009-12-07 21:57:40 → 2011-03-07 21:57:40
Signature Algorithm: sha1RSA
Serial Number: 61 15 23 0F 00 00 00 00 00 0A
Microsoft Time-Stamp PCA #7 Chain
Validity Period: 2007-04-03 12:53:09 → 2021-04-03 13:03:09
Signature Algorithm: sha1RSA
Serial Number: 61 16 68 34 00 00 00 00 00 1C
Microsoft Windows Verification PCA #8 Chain
Validity Period: 2005-09-15 21:55:41 → 2016-03-15 22:05:41
Signature Algorithm: sha1RSA
Serial Number: 61 07 02 DC 00 00 00 00 00 0B
Microsoft Windows #9 Chain
Validity Period: 2015-08-18 17:15:28 → 2016-11-18 17:15:28
Signature Algorithm: sha256RSA
Serial Number: 33 00 00 00 BC E1 20 FD D2 7C C8 EE 93 00 00 00 00 00 BC
Microsoft Windows Production PCA 2011 #10 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 PCA 2010 #11 Chain
Validity Period: 2010-07-01 21:36:55 → 2025-07-01 21:46:55
Signature Algorithm: sha256RSA
Serial Number: 61 09 81 2A 00 00 00 00 00 02
Microsoft Time-Stamp Service #12 Chain
Validity Period: 2016-04-27 17:06:20 → 2017-07-27 17:06:20
Signature Algorithm: sha256RSA
Serial Number: 33 00 00 00 9B 21 D7 96 01 93 57 8B A4 00 00 00 00 00 9B
Microsoft Windows #13 Chain
Validity Period: 2018-07-03 20:45:50 → 2019-07-26 20:45:50
Signature Algorithm: sha256RSA
Serial Number: 33 00 00 01 C4 22 B2 F7 9B 79 3D AC B2 00 00 00 00 01 C4
Microsoft Time-Stamp Service #14 Chain
Validity Period: 2018-08-23 20:26:13 → 2019-11-23 20:26:13
Signature Algorithm: sha256RSA
Serial Number: 33 00 00 00 C8 24 19 CB AA 54 E6 6C 2A 00 00 00 00 00 C8
Microsoft Time-Stamp Service #15 Chain
Validity Period: 2014-05-23 17:13:15 → 2015-08-23 17:13:15
Signature Algorithm: sha1RSA
Serial Number: 33 00 00 00 5A ED 2F F4 E4 20 99 3F 3A 00 00 00 00 00 5A

✓ 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

The expected hash does not match the digest in SpcInfo

Recommendation: Verify the file source and ensure it comes from a trusted publisher.

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:

Download Anti-Malware

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
7 antivirus engines detected potential threats. This could be a false positive, especially for system tools or packed software. Verify the file source and check if it's digitally signed by a trusted publisher.

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