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The vstdlib_s.dll (vstdlib_ s.dll (buildbot_winslave01_steam_rel_client_win32@winslave01) (buildbot_winslave01_steam_rel_client_win32@winslave01)) File Analysis

Updated 3 months ago
Checked by Malware Check
vstdlib_s.dll

Technical Analysis

File Name vstdlib_s.dll
File Type
PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
Scanner Version 1.0.226.174
Database Version 2025-09-26 23:00:20 UTC
✓

Clean File

No threats detected by our scanner

0%
Detection Rate
433,760
File Size (bytes)
2025-09-26
Analysis Date

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File Identification

Hash Type Value Action
MD5
f7fd0acad4284dab38ba9e4b6e503f19
SHA1
2fbbfc7daa718aef7ea4f1b6b6ea3f14c7e0f982
SHA256
70d4e03aa3bd096a7d99e93d431a2492ac2bc750f9b25f7360bf110cc9acadd6
SHA512
1a44d792cee0aed1e59b12f27f3261cf1399e779ca0d8b81e817930fc03fa5e46e0d18bd2b2d6e5ea6cc518877f120b68c03f0ead1dcca5963e766510c4efda2
ImpHash
81f129b3274ed7488befa64e66b4139e

PE Analysis

Basic Information

▼
Image Base 0x3f600000
Entry Point 0x3f62df04
Compilation Time 2011-07-25 17:24:15
Checksum 0x0006ecc8 (Actual: 0x0006ecc8)
OS Version 4.0
PEiD Signatures PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
PDB Path d:\buildslave\steam_rel_client_win32\build\src\vstdlib\Release\vstdlib_s.pdb
Digital Signature Chain verification from CN=Valve, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Valve, ST=Washington, C=US (serial:164773371458459290110603488100872510238, sha1:ce5ae98633be96d6244f13409492d8e77f7016ea) failed: The path could not be validated because intermediate certificate 1 expired 2019-05-20 23:59:59Z
Imports 4 libraries
WS2_32, KERNEL32, USER32, tier0_s
Exports 184 functions
Resources 3 Resources
Sections 5 Sections

Version Information

▼
LegalCopyright Copyright (C) 2005 Valve Corporation
InternalName vstdlib_ s.dll
FileVersion 01.14.66.23
CompanyName Valve Corporation
ProductVersion 03.00.00.01
FileDescription vstdlib_ s.dll (buildbot_winslave01_steam_rel_client_win32@winslave01) (buildbot_winslave01_steam_rel_client_win32@winslave01)
Source Control ID 1146623
OriginalFilename vstdlib_ s.dll
ProductName Steam
Translation 0x0409 0x04b0
CompanyName Valve Corporation
FileDescription vstdlib_ s.dll
FileVersion 3, 0, 0, 1
InternalName vstdlib_ s.dll
LegalCopyright Copyright (C) 2005 Valve Corporation
OriginalFilename vstdlib_ s.dll
ProductName Steam
ProductVersion 3, 0, 0, 1
Translation 0x0409 0x04b0

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 338,826 bytes 339,968 bytes 6.75 (Compressed) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ 3DA91D0BA2C33B7FFA5FDAC5CE225B89
.rdata 0x00054000 53,176 bytes 53,248 bytes 5.83 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 8EBBC5A755762111C5E55C199A2FDBB9
.data 0x00061000 25,644 bytes 12,288 bytes 3.82 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 20EC389963D517E99637CB5E3F0ADF8E
.rsrc 0x00068000 2,060 bytes 4,096 bytes 4.04 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ E06DE5DC3441BF869E9E2323DEEF025F
.reloc 0x00069000 16,256 bytes 16,384 bytes 6.72 (Compressed) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_DISCARDABLE|IMAGE_SCN_MEM_READ 3928ECA972B8F5E814254D158C9EBFAA
Entropy Analysis Alert

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

Resource Analysis

▼
Total Resources: 3 (1,827 bytes)
Resource Type Count Total Size Percentage
SCID 1 7 bytes
0.4%
RT_VERSION 2 1,820 bytes
99.6%

Certificate Chain Analysis

▼
Certificate Information
Product Steam
Description vstdlib_ s.dll (buildbot_winslave01_steam_rel_client_win32@winslave01) (buildbot_winslave01_steam_rel_client_win32@winslave01)
File Version 01.14.66.23
Original Name vstdlib_ s.dll
Verification Status A certificate was explicitly revoked by its issuer.
Signers Valve; VeriSign Class 3 Code Signing 2009-2 CA; VeriSign Class 3 Public Primary CA
Internal Name vstdlib_ s.dll
Copyright Copyright (C) 2005 Valve Corporation
Certificate Chain Summary
Certificate #1 Primary
Validity Period: 1996-01-29 00:00:00 → 2028-08-01 23:59:59
Signature Algorithm: 1.2.840.113549.1.1.2
Serial Number: 70 BA E4 1D 10 D9 29 34 B6 38 CA 7B 03 CC BA BF
Valve #2 Chain
Validity Period: 2009-11-25 00:00:00 → 2012-11-23 23:59:59
Signature Algorithm: sha1RSA
Serial Number: 7B F6 32 6F 70 CB EC 34 0B F2 D1 86 8F E6 5B 1E
VeriSign Class 3 Code Signing 2009-2 CA #3 Chain
Validity Period: 2009-05-21 00:00:00 → 2019-05-20 23:59:59
Signature Algorithm: sha1RSA
Serial Number: 65 52 26 E1 B2 2E 18 E1 59 0F 29 85 AC 22 E7 5C

✓ 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

Chain verification from CN=Valve, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Valve, ST=Washington, C=US (serial:164773371458459290110603488100872510238, sha1:ce5ae98633be96d6244f13409492d8e77f7016ea) failed: The path could not be validated because intermediate certificate 1 expired 2019-05-20 23:59:59Z

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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