The ET Optimizer (ET Optimizer) Sebastian Mazurek File Malware Analysis
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The ET-Optimizer (ET-Optimizer) File Analysis

Updated 10 days ago
Checked by Malware Check
ET.exe

Technical Analysis

File Name ET.exe
File Type
Win32 EXE
Magic Bytes PE32+ executable (GUI) x86-64 Mono/.Net assembly, for MS Windows
SSDEEP Hash
6144:JCWiTzyDDtRxqbFf+T7XFW8NxYrEx+R2EmwY9JNamrd41c8WmZkguFl+B2emw6x1:JCWinyftBW8NxD+1mwYHrZ8Lkv+nmw6P
Scanner Version 1.0.223.174
Database Version 2025-08-30 13:00:41 UTC
⚠

Suspicious File Detected

Detected by 18 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.
25%
Detection Rate
1,335,408
File Size (bytes)
18/72
Engines Detected
2025-08-30
Analysis Date

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File Identification

Hash Type Value Action
MD5
b16e8ed15ab7748805c55f3c2f9d11a4
SHA1
af5ad4fb1f5186b39465823dc8f2a748c1495ecd
SHA256
3b09f742315ac19ff02f0b579eebbdeb83c0b723ff90487961b11625af4763d8
SHA512
3005d2fae2d371453a219a8cda32f0144c8ae771a23953b77d4ed1d3c34ba4d8ef4d0bccf8fb5e17f894d2091697ad6bbf8c17ecb1f0d7869bda9d32258f415a

Security Engines with Detections (18 of 72)

MicroWorld-eScan
IL:Trojan.MSILZilla.206757 Malicious
CTX
exe.trojan.msilzilla Malicious
ALYac
IL:Trojan.MSILZilla.206757 Malicious
VIPRE
IL:Trojan.MSILZilla.206757 Malicious
Paloalto
generic.ml Malicious
BitDefender
IL:Trojan.MSILZilla.206757 Malicious
Emsisoft
IL:Trojan.MSILZilla.206757 (B) Malicious
Webroot
W32.Hack.Tool Malicious
Kingsoft
Win32.RISKWARE.BrowseFox.a Malicious
Microsoft
Trojan:Win32/Wacatac.B!ml Malicious
Arcabit
IL:Trojan.MSILZilla.D327A5 Malicious
GData
IL:Trojan.MSILZilla.206757 Malicious
AhnLab-V3
Trojan/Win.Generic.C5792000 Malicious
Malwarebytes
Malware.AI.88500796 Malicious
TrellixENS
Artemis!B16E8ED15AB7 Malicious
huorong
Adware/BrowseFox.a Malicious
Fortinet
MSIL/Agent.FUL!tr Malicious
DeepInstinct
MALICIOUS Malicious
54 engines reported no threats - Only engines with detections are shown above for clarity

PE Analysis

Basic Information

▼
Icon
Hash: 071e288d4341d773aea103b85ef99fc5
Fuzzy: 3274d95cd09a3fa7de8ab4be873d25be
dHash: 6273d13121333131
Image Base 0x140000000
Entry Point 0x140000000
Compilation Time 2062-03-06 17:48:49
Checksum 0x00147799 (Actual: 0x00147799)
OS Version 4.0
PEiD Signatures PE32+ executable (GUI) x86-64 Mono/.Net assembly, for MS Windows
PDB Path C:\Users\Rikey\Desktop\ET-Optimizer-master\ET-Optimizer-master\ET\obj\x64\Release\ET.pdb
Digital Signature An error occurred while validating the countersignature: The root Certum Trusted Network CA 2 lists its extended key usages, but {'time_stamping'} are not present
Imports 0
Exports 0 functions
Resources 9 Resources
Sections 2 Sections

Version Information

▼
Translation 0x0000 0x04b0
Comments Windows application designed to improve system performance by removing unnecessary files, optimizing startup processes, and managing system resources efficiently. It helps your PC run faster and more smoothly with minimal user effort.
CompanyName Sebastian Mazurek
FileDescription ET-Optimizer
FileVersion 6.07.20.0
InternalName ET.exe
LegalCopyright Sebastian Mazurek Copyright © 2025
LegalTrademarks
OriginalFilename ET.exe
ProductName ET-Optimizer
ProductVersion 6.07.20.0
Assembly Version 6.7.20.0

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00002000 948,344 bytes 948,736 bytes 5.73 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ 422793788251C62AF9316B2452F46B56
.rsrc 0x000ea000 375,808 bytes 375,808 bytes 4.06 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ D63FA34E0CF7C6B67DA28E0F606FD4CB

Resource Analysis

▼
Total Resources: 9 (375,254 bytes)
Resource Type Count Total Size Percentage
RT_ICON 6 369,968 bytes
98.6%
RT_GROUP_ICON 1 90 bytes
0%
RT_VERSION 1 1,334 bytes
0.4%
RT_MANIFEST 1 3,862 bytes
1%

Certificate Chain Analysis

▼
Certificate Information
Product ET-Optimizer
Description ET-Optimizer
File Version 6.07.20.0
Original Name ET.exe
Signing Date 07:17 PM 08/25/2025 (15 days ago)
Verification Status Signed
Signers Open Source Developer, Sebastian Mazurek; Certum Code Signing 2021 CA; Certum Trusted Network CA 2; Certum Trusted Network CA
Counter Signers Certum Timestamp 2025; Certum Timestamping 2021 CA; Certum Trusted Network CA 2; Certum Trusted Network CA
Internal Name ET.exe
Copyright Sebastian Mazurek Copyright © 2025
Certificate Chain Summary
Open Source Developer, Sebastian Mazurek #1 Primary
Validity Period: 2025-08-05 18:18:12 → 2026-08-05 18:18:11
Signature Algorithm: sha256RSA
Serial Number: 7C 46 A7 08 DB 9E 0E B4 C6 58 7D B5 90 D9 81 D9
Certum Code Signing 2021 CA #2 Chain
Validity Period: 2021-05-19 05:32:18 → 2036-05-18 05:32:18
Signature Algorithm: sha384RSA
Serial Number: 99 A3 80 0A 26 55 3B 65 AB DC 6E 84 A6 B3 EA 39
Certum Timestamp 2025 #3 Chain
Validity Period: 2025-01-09 08:40:43 → 2036-01-07 08:40:43
Signature Algorithm: sha384RSA
Serial Number: 9E 9C 04 F6 55 A8 B4 A7 02 6D 49 8C 6C 78 8D AA
Certum Timestamping 2021 CA #4 Chain
Validity Period: 2021-05-19 05:32:07 → 2036-05-18 05:32:07
Signature Algorithm: sha384RSA
Serial Number: E7 FF 69 C7 3B 35 CE 4B 91 26 D8 74 7C 68 A5 87
Certum Trusted Network CA 2 #5 Chain
Validity Period: 2021-05-31 06:43:06 → 2029-09-17 06:43:06
Signature Algorithm: sha384RSA
Serial Number: 1B B5 8F 25 2A DF 23 00 49 28 C9 AE 3D 7E ED 27

✓ 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

An error occurred while validating the countersignature: The root Certum Trusted Network CA 2 lists its extended key usages, but {'time_stamping'} are not present

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
18 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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