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Steam_api.dll Trojan Packed Analysis

Updated 0 seconds 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 1.0.220.174
Database Version 2025-07-15 10:00:22 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
837,120
File Size (bytes)
2025-07-15
Analysis Date

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File Identification

Hash Type Value Action
MD5
29bc7eaa1710b3eda16514f4fd293c7d
SHA1
eda609a83b76ef7b8ab351d09f45a1b57a9bf2f5
SHA256
8dbee95db4b2136182f4a88e96b4f548cda0c12fc113cf29358bc9420671676d
SHA512
6f50e83f746bcc229ea4877ce0c2a75f360572fc6e1d9ad54101a1d0ca0f348b7f43272b032d4e7ea4bd8423ddabf0daa6e28ab278f70c412bdb4e38cf4189a6
ImpHash
a4f793f570168978f79d1f8059464971

PE Analysis

Basic Information

▼
Image Base 0x10000000
Entry Point 0x10cd5dd2
Compilation Time 2020-01-23 07:54:17
Checksum 0x000cffec (Actual: 0x000cffec)
OS Version 5.1
PEiD Signatures PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
Digital Signature No valid SignedData structure was found.
Imports 10 libraries
KERNEL32, USER32, ADVAPI32, SHELL32, ole32, WS2_32, WINHTTP, SHLWAPI, PSAPI, bcrypt
Exports 1103 functions
Resources 2 Resources
Sections 7 Sections

Version Information

▼
Comments Valve SpecialBuild
CompanyName Valve Corporation
FileDescription Steam Client API
FileVersion 05.53.33.78
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 5533378
Translation 0x0804 0x04b0

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 402,982 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ D41D8CD98F00B204E9800998ECF8427E
.rdata 0x00064000 157,483 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ D41D8CD98F00B204E9800998ECF8427E
.data 0x0008b000 11,366,820 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE D41D8CD98F00B204E9800998ECF8427E
.UPX0 0x00b63000 700,276 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ D41D8CD98F00B204E9800998ECF8427E
.UPX1 0x00c0e000 833,076 bytes 833,536 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 6830399F51A7F5B7F206C751B5EDCEBB
.reloc 0x00cda000 192 bytes 512 bytes 2.35 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 94BD1CEB1BCB0973ECBD416834DD7CFC
.rsrc 0x00cdb000 1,578 bytes 2,048 bytes 3.37 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 92292ACFE0C06E2903FC7DE52BA2C9F9
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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