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The microstub File Analysis

Updated 1 year ago
Checked by Malware Check
uploaded

Technical Analysis

File Name uploaded
File Type
PE32 executable (GUI) Intel 80386, for MS Windows
Scanner Version 1.0.139.174
Database Version 2023-09-23 08:01:51 UTC
✓

Clean File

No threats detected by our scanner

0%
Detection Rate
263,576
File Size (bytes)
2023-09-23
Analysis Date

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File Identification

Hash Type Value Action
MD5
b76816b61d6b4e26692762bb9aba159f
SHA1
dca60bce68bfc33843a9d1b7e81f3a76c9a6f1b2
SHA256
0018767266033a8ba39f7505ffb902aaa33ffe9469ecf6a25c34a6f7f5c629df
SHA512
b816a280dda99cb459b14e2eef196fef91ea609ce6aa7edccf5454d5d62d4b51e2f3377d5444074a95b8be4c499beb564254973e804a2613237e2f189b2e8983
ImpHash
79b68a12e4eb6aa0c59dd1289006924f

PE Analysis

Basic Information

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Icon
Hash: cb5c28624e289bde316a5273a6b8934b
Fuzzy: f586d531098baa93f92163fe76c339f5
dHash: cc333369591d07cc
Image Base 0x00400000
Entry Point 0x00401020
Compilation Time 2023-04-12 08:36:05
Checksum 0x0004b340 (Actual: 0x0004b340)
OS Version 5.1
PEiD Signatures PE32 executable (GUI) Intel 80386, for MS Windows
PDB Path C:\BUILD\work\8b0ebd312dc47f30\projects\avast\microstub\x86\Release\microstub.pdb
Digital Signature Invalid length in certificate table header
Imports 6 libraries
KERNEL32, USER32, GDI32, ADVAPI32, ole32, COMCTL32
Exports 0 functions
Resources 50 Resources
Sections 6 Sections

Digital Signatures

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DigiCert Trusted Root G4 DigiCert, Inc. (US)
DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1 Avast Software s.r.o. (CZ)

Version Information

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CompanyName AVAST Software
Edition 1
FileDescription Avast Installer
FileVersion 2.1.99.0
InternalName microstub
LegalCopyright Copyright (c) 2023 AVAST Software
OriginalFilename microstub.exe
ProductName Avast
ProductVersion 2.1.99.0
Translation 0x0409 0x04b0

PE Sections

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Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 136,906 bytes 137,216 bytes 6.55 (Compressed) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ F3AA9BFE0E0173B2D8DBF69E0F7B5C30
.rdata 0x00023000 41,056 bytes 41,472 bytes 5.40 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ F1313DBC7D48A2854099A510BFC2275F
.data 0x0002e000 5,568 bytes 2,560 bytes 2.79 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE E676CE13014A1FEA1D94C6052CB98545
.didat 0x00030000 76 bytes 512 bytes 0.69 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE F2FF10BF470DB291929511A1884E701B
.rsrc 0x00031000 62,408 bytes 62,464 bytes 4.97 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 09F9BECAC0D76DB7ED1EC4EE9CCD0CF3
.reloc 0x00041000 7,352 bytes 7,680 bytes 6.57 (Compressed) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_DISCARDABLE|IMAGE_SCN_MEM_READ B242D5C80AB78D037235C071E32E80D5
Entropy Analysis Alert

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

Resource Analysis

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Total Resources: 50 (60,332 bytes)
Resource Type Count Total Size Percentage
PNG 2 3,259 bytes
5.4%
RT_ICON 5 40,480 bytes
67.1%
RT_STRING 39 14,638 bytes
24.3%
RT_RCDATA 1 40 bytes
0.1%
RT_GROUP_ICON 1 76 bytes
0.1%
RT_VERSION 1 760 bytes
1.3%
RT_MANIFEST 1 1,079 bytes
1.8%

Certificate Chain Analysis

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Certificate #1
Subject DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1
DigiCert, Inc.
US
Issuer DigiCert Trusted Root G4
Serial Number 11533403529598586876501374841704918745
Certificate #2
Subject Avast Software s.r.o.
Avast Software s.r.o.
CZ
Issuer DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1
Serial Number 1798723652711273418253906996267257363
Certificate Verification Status

Invalid length in certificate table header

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:

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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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