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The FastEx64.dll (Shell Extension for FastCopy) File Analysis

Technical Analysis

File Name FastEx64.dll
File Type
PE32+ executable (DLL) (GUI) x86-64, for MS Windows
Scanner Version 1.0.229.174
Database Version 2025-11-13 16:00:17 UTC

Clean File

No threats detected by our scanner

0%
Detection Rate
312,960
File Size (bytes)
2025-11-13
Analysis Date

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File Identification

Hash Type Value Action
MD5
42fea7d46628269185f9483d5b2cbfbf
SHA1
8ccc9f75cafb63f933b631afd0589b64f077aee1
SHA256
e2594c04dea4af40d00e97d37a0cd5f6735c279090eb29bbf7e561dc74027b92
SHA512
ce384ff8e289a0c5b7d3660d020a4874c8e0294c5ff779a3852eef45ae6e3db91b6adf40abec9e1127ebdd27f6d74430d96e297105b7e21bb81b9b8c091281db
ImpHash
2e20de4f03c2e92af6adaa1985fa520f

PE Analysis

Basic Information

Icon
Hash: a6e68bb924bae484ea96c226695d245a
Fuzzy: be36e9241c67fd47fbdb27959bfe5ef6
dHash: e8e8b632da1ab8e4
Image Base 0x180000000
Entry Point 0x180019f50
Compilation Time 2025-01-27 13:23:28
Checksum 0x0005c4fa (Actual: 0x0005c4fa)
OS Version 6.0
PEiD Signatures PE32+ executable (DLL) (GUI) x86-64, for MS Windows
PDB Path C:\FastCopy\x64\Obj\ReleaseShl\FastEx64.pdb
Digital Signature OK
Imports 1 libraries
KERNEL32
Exports 10 functions
Resources 7 Resources
Sections 7 Sections

Version Information

Comments https://fastcopy.jp
CompanyName FastCopy Lab, LLC.
FileDescription Shell Extension for FastCopy
FileVersion 5.8.1.0
InternalName Shell Extension for FastCopy
LegalCopyright Copyright (C) 2004-2025 SHIROUZU Hiroaki and FastCopy Lab, LLC. All rights reserved.
OriginalFilename fastext1.dll
ProductName Shell Extension for FastCopy
ProductVersion 5.8.1.0
Translation 0x0411 0x04b0

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 195,679 bytes 196,096 bytes 6.78 (Compressed) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ 8B916483F8FB266217264F80D9D1471A
.rdata 0x00031000 81,630 bytes 81,920 bytes 5.63 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 6369546391F3E5708F5198BAF701B90C
.data 0x00045000 87,888 bytes 4,608 bytes 2.75 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 42863806B737E135FCE5343EF1792008
.pdata 0x0005b000 7,860 bytes 8,192 bytes 5.48 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ F5AEA6E9D25A517EE7BDAB9DC98136BF
.fptable 0x0005d000 256 bytes 512 bytes 0.00 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE BF619EAC0CDF3F68D496EA9344137E8B
.rsrc 0x0005e000 3,568 bytes 3,584 bytes 4.30 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ FC02164F9449D4A2AB2CEE5970959CA9
.reloc 0x0005f000 2,016 bytes 2,048 bytes 5.39 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_DISCARDABLE|IMAGE_SCN_MEM_READ 53E97340DE828800F580E6B39FA267CC
Entropy Analysis Alert

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

Resource Analysis

Total Resources: 7 (3,117 bytes)
Resource Type Count Total Size Percentage
RT_ICON 1 872 bytes
28%
RT_STRING 3 828 bytes
26.6%
RT_GROUP_ICON 1 20 bytes
0.6%
RT_VERSION 1 1,016 bytes
32.6%
RT_MANIFEST 1 381 bytes
12.2%

Certificate Chain Analysis

Certificate Information
Product Shell Extension for FastCopy
Description Shell Extension for FastCopy
File Version 5.8.1.0
Original Name fastext1.dll
Signing Date 01:24 PM 01/27/2025 (347 days ago)
Verification Status Signed
Signers FastCopy Lab, LLC.; Microsoft ID Verified CS AOC CA 02; Microsoft ID Verified Code Signing PCA 2021; Microsoft Identity Verification Root Certificate Authority 2020
Counter Signers Microsoft Public RSA Time Stamping Authority; Microsoft Public RSA Timestamping CA 2020; Microsoft Identity Verification Root Certificate Authority 2020
Internal Name Shell Extension for FastCopy
Copyright Copyright (C) 2004-2025 SHIROUZU Hiroaki and FastCopy Lab, LLC. All rights reserved.
Certificate Chain Summary
Microsoft Identity Verification Root Certificate Authority 2020 #1 Primary
Validity Period: 2020-04-16 18:36:16 → 2045-04-16 18:44:40
Signature Algorithm: sha384RSA
Serial Number: 54 98 D2 D1 D4 5B 19 95 48 13 79 C8 11 C0 87 99
FastCopy Lab, LLC. #2 Chain
Validity Period: 2025-01-27 05:25:48 → 2025-01-30 05:25:48
Signature Algorithm: sha384RSA
Serial Number: 33 00 02 81 75 3B 24 17 11 82 76 5F 0F 00 00 00 02 81 75
Microsoft ID Verified CS AOC CA 02 #3 Chain
Validity Period: 2021-04-13 17:31:52 → 2026-04-13 17:31:52
Signature Algorithm: sha384RSA
Serial Number: 33 00 00 00 04 96 50 4B D2 DB EE CB 88 00 00 00 00 00 04
Microsoft ID Verified Code Signing PCA 2021 #4 Chain
Validity Period: 2021-04-01 20:05:20 → 2036-04-01 20:15:20
Signature Algorithm: sha384RSA
Serial Number: 33 00 00 00 07 87 A3 34 A3 7B A5 8E 1C 00 00 00 00 00 07
Microsoft Public RSA Timestamping CA 2020 #5 Chain
Validity Period: 2020-11-19 20:32:31 → 2035-11-19 20:42:31
Signature Algorithm: sha384RSA
Serial Number: 33 00 00 00 05 E5 CF 0F FF 66 2E C9 87 00 00 00 00 00 05
Microsoft Public RSA Time Stamping Authority #6 Chain
Validity Period: 2024-11-26 18:48:49 → 2025-11-19 18:48:49
Signature Algorithm: sha384RSA
Serial Number: 33 00 00 00 46 17 E4 75 7A CA FD DA E5 00 00 00 00 00 46

✓ 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

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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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