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Steam_api.dll Trojan Packed Analysis

Updated 5 minutes ago
Checked by Malware Check
steam_api.dll

Technical Analysis

File Name steam_api.dll
File Type
PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
Scanner Version 1.0.219.174
Database Version 2025-06-27 12:00:28 UTC
⚠

Trojan.Win32.Packed.oa!s5

Malware family: Packed

Packed malware uses compression, encryption, or obfuscation techniques to alter code appearance and evade security detection. These methods modify the original malware structure to bypass signature-based detection systems and complicate analysis efforts.
N/A
Detection Rate
860,672
File Size (bytes)
2025-06-27
Analysis Date

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File Identification

Hash Type Value Action
MD5
30274431742250fde93b7c45ef4626ee
SHA1
ba54eea2c3a1c99e0ca2a576c50edf91be5675c9
SHA256
bd95bf9f54d8e229bfda3fab8fc330ffa6f271d895dbf195b6a75121ed7b3e2e
SHA512
fcf5652422549db9cebb064cf99c6b93d60dbc0a822cbfbfcfdd4e4298ae94ed9fac39fe620696b3384a266da74af61327769c98256cba0d5ac6bf0bc8c7a960
ImpHash
b28533a4d11f61e33b66e5fe5bb0e3ab

PE Analysis

Basic Information

▼
Image Base 0x10000000
Entry Point 0x10cf7986
Compilation Time 2017-08-21 07:45:42
Checksum 0x000d3035 (Actual: 0x000d3035)
OS Version 5.1
PEiD Signatures PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
Digital Signature No valid SignedData structure was found.
Imports 7 libraries
KERNEL32, USER32, ADVAPI32, SHELL32, WS2_32, WINHTTP, PSAPI
Exports 1058 functions
Resources 2 Resources
Sections 7 Sections

Version Information

▼
Comments Valve SpecialBuild
CompanyName Valve Corporation
FileDescription Steam Client API
FileVersion 04.04.91.85
InternalName Steam Client API (buildbot_steam-relclient-win32-builder_steam_rel_client_win32@steam-relclient-win32-builder)
LegalCopyright Copyright (C) 2007
OriginalFilename steam_api.dll
ProductName Steam Client API
ProductVersion 01.00.00.01
Source Control ID 4049185
Translation 0x0804 0x04b0

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 399,844 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ D41D8CD98F00B204E9800998ECF8427E
.rdata 0x00063000 197,122 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ D41D8CD98F00B204E9800998ECF8427E
.data 0x00094000 11,508,740 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE D41D8CD98F00B204E9800998ECF8427E
.UPX0 0x00b8e000 644,200 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ D41D8CD98F00B204E9800998ECF8427E
.UPX1 0x00c2c000 856,776 bytes 857,088 bytes 7.97 (Packed/Encrypted) IMAGE_SCN_CNT_CODE|IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 110DE26D4BC08D1E8FA8DD34998C3697
.reloc 0x00cfe000 204 bytes 512 bytes 2.06 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ EEFCC0ADB0D4730E36F0C7B57A84D7FC
.rsrc 0x00cff000 1,578 bytes 2,048 bytes 3.37 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 00544BDB39FBE29FBA956F8C62F20173
Entropy Analysis Alert

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

Resource Analysis

▼
Total Resources: 2 (1,418 bytes)
Resource Type Count Total Size Percentage
RT_VERSION 1 1,072 bytes
75.6%
RT_MANIFEST 1 346 bytes
24.4%

Certificate Chain Analysis

▼
No Digital Signatures

This file is not digitally signed.

Security Implications:
  • Cannot verify the publisher's identity
  • Increased security risk when running this file
  • May trigger security warnings on some systems

⚠ This file either lacks a digital signature or the certificate chain could not be verified
Exercise caution when executing unsigned files from unknown sources

Certificate Verification Status

No valid SignedData structure was found.

Recommendation: Verify the file source and ensure it comes from a trusted publisher.

Trojan.Win32.Packed.oa!s5 Removal

Gridinsoft has the capability to identify and eliminate Trojan.Win32.Packed.oa!s5 without requiring further user intervention.

Download Anti-Malware

Removal Instructions

Follow these steps to completely remove the threat from your system

  1. Start by downloading Gridinsoft Anti-Malware to your computer.
  2. Double-click on the gsam-en-install.exe file and follow the on-screen instructions to install the program.
  3. Once the installation of Gridinsoft Anti-Malware is complete, the program will open on the Scan screen.
  4. Click on the "Standard Scan" button to begin scanning your computer for threats.
  5. After the scanning process is finished, click on "Clean Now" to remove any detected threats.
  6. If prompted, restart your system to complete the removal process and ensure all threats are eliminated.
Important: Before You Start
Disconnect from the internet to prevent the malware from spreading or downloading additional threats. Run the scan in Safe Mode for better detection and removal of persistent threats.

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