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The steam_api64.dll (Steam Client API (buildbot_winslave007@WUS)) File Analysis

Updated 2 months ago
Checked by Malware Check
steam_api64.dll

Technical Analysis

File Name steam_api64.dll
File Type
PE32+ executable (DLL) (GUI) x86-64, for MS Windows
Scanner Version 1.0.228.174
Database Version 2025-10-27 04:00:17 UTC
✓

Clean File

No threats detected by our scanner

0%
Detection Rate
302,368
File Size (bytes)
2025-10-27
Analysis Date

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File Identification

Hash Type Value Action
MD5
91ee10f8081a88b8164c09fa67e9c620
SHA1
fa017600ef1720a329ad8ca7d0f00373b28669c1
SHA256
78366502cb476dd685b61eb717e028d3e97dad50d791e22baf7aa5364d41b835
SHA512
7f9f468b972fc107ac60f8ff123f94925dfe7bce2808c7d5a91c2008d082ad87780a03e5ed4727296289042ffe0a9f287ac7bc915c0728d5e6d6619ddd7ccdd8
ImpHash
b329a215c92c395b222af28465e807db

PE Analysis

Basic Information

▼
Image Base 0x180000000
Entry Point 0x1800de9e0
Compilation Time 2019-08-20 00:19:29
Checksum 0x00052b2f (Actual: 0x00052b2f)
OS Version 6.0
PEiD Signatures PE32+ executable (DLL) (GUI) x86-64, for MS Windows
Digital Signature Chain verification from CN=WUS! (serial:-103251830510890988845464931467663467065, sha1:6d477531aec3c53b14fc21e85311780dee5482c7) failed: The X.509 certificate provided is self-signed - "Common Name: WUS!"
Imports 7 libraries
KERNEL32, ntdll, PSAPI, SHELL32, SHLWAPI, USER32, WS2_32
Exports 91 functions
Resources 2 Resources
Sections 3 Sections

Version Information

▼
LegalCopyright Copyright (C) NisCkxU544c
InternalName Steam Client API
FileVersion 01.0.1.19
CompanyName Valve Corporation
ProductVersion 01.00.00.01
FileDescription Steam Client API (buildbot_winslave007@WUS)
Source Control ID 1337110
OriginalFilename steam_api.dll
ProductName Steam Client API
Translation 0x0409 0x04b0
CompanyName Valve Corporation
FileDescription Steam Client API
FileVersion 1, 0, 0, 1
InternalName Steam Client API
LegalCopyright Copyright (C) 2007
OriginalFilename steam_api.dll
ProductName Steam Client API
ProductVersion 1, 0, 0, 1
Translation 0x0409 0x04b0

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
WUS0 0x00001000 614,400 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_UNINITIALIZED_DATA|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE D41D8CD98F00B204E9800998ECF8427E
WUS1 0x00097000 294,912 bytes 294,400 bytes 7.93 (Packed/Encrypted) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE FD5E55961C92D103CE6CDBBFC7FB00EB
.rsrc 0x000df000 8,192 bytes 5,632 bytes 4.77 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE EEB1F0ADBFD016A0FBCF4C46E76554C9
Entropy Analysis Alert

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

Resource Analysis

▼
Total Resources: 2 (1,640 bytes)
Resource Type Count Total Size Percentage
RT_VERSION 2 1,640 bytes
100%

Certificate Chain Analysis

▼
Certificate Information
Product Steam Client API
Description Steam Client API (buildbot_winslave007@WUS)
File Version 01.0.1.19
Original Name steam_api.dll
Verification Status A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider.
Signers WUS!
Internal Name Steam Client API
Copyright Copyright (C) NisCkxU544c
Certificate Chain Summary
WUS! #1 Primary
Validity Period: 2014-07-01 00:00:00 → 2088-01-01 00:00:00
Signature Algorithm: 1.3.14.3.2.29
Serial Number: B2 52 6B B8 47 7B CC A7 4E 05 F9 73 00 70 9D C7

✓ 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=WUS! (serial:-103251830510890988845464931467663467065, sha1:6d477531aec3c53b14fc21e85311780dee5482c7) failed: The X.509 certificate provided is self-signed - "Common Name: WUS!"

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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