GridinSoft Threat Intelligence
steam_api_o.dll threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as Trojan.Heur!. Download GridinSoft Anti-Malware to scan the device, confirm whether this file is present, and remove the detected object if it is found.
- Detection name
- Trojan.Heur!
- Recommended action
- Scan and remove
- Last analysis
- 2026-05-16 04:00:55 (2 weeks ago)
- File hash
- 674ee82af4ddc1b3badd09ac8744d979
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as Trojan.Heur!, part of the Trojan threat category.
Malware disguised as legitimate software or delivered through deceptive packaging. Related Trojan reports help compare this file with nearby detections, publishers, and hashes.
First seen 2026-05-14 07:01:09 (2 weeks ago); latest analysis 2026-05-16 04:00:55 (2 weeks ago).
Company metadata: Valve Corporation. Product metadata: Steam Client API.
Signed by Valve Corp.. The signature is not reported as trusted and valid, which can indicate tampering, repackaging, or copied publisher data.
ThreatInfo has seen this file in user or system paths listed below. Unexpected locations increase the need for local verification.
Recommended action
What to do next
- Compare the MD5 above with the file found on the device.
- Check whether the file appears in the observed locations or under one of the alternate names.
- Run GridinSoft Anti-Malware to confirm the detection and remove the file if it is present. Review the Trojan category for related samples and common context.
File context
steam_api_o.dll is a Windows file recorded in the ThreatInfo database. It is associated with Steam Client API. The reported company name is Valve Corporation. The current detection status is Trojan.Heur!, based on the latest analysis from 2026-05-16 04:00:55 (2 weeks ago). ThreatInfo groups this verdict with Trojan reports for broader family-level investigation.
If steam_api_o.dll appears on your computer unexpectedly, treat it as suspicious. Check its location, digital signature, and recent system changes before allowing it to run. A full anti-malware scan is recommended when this file is detected as Trojan.Heur!.
File Details
| Product Name: | Steam Client API |
| Company Name: | Valve Corporation |
| MD5: | 674ee82af4ddc1b3badd09ac8744d979 |
| Size: | 902 KB |
| First Published: | 2026-05-14 07:01:09 (2 weeks ago) |
| Latest Published: | 2026-05-16 04:00:55 (2 weeks ago) |
| Status: | Trojan.Heur! (on last analysis) | |
| Analysis Date: | 2026-05-16 04:00:55 (2 weeks ago) |
Detection screenshot
The screenshot is a visual record of a GridinSoft Anti-Malware detection for this sample. Use the hash and metadata above as the primary identifiers when comparing the file on your system.
Overview
| Signed By: | Valve Corp. |
| Status: | Invalid (digital signature could be stolen or file could be patched) |
The signature on steam_api_o.dll is not reported as trusted and valid. Invalid or suspicious signature data can indicate tampering, repackaging, or an unrelated file using copied publisher information.
Common Places:
| %sysdrive%\samson\samson\engine\binaries\thirdparty\steamworks\steamv161 |
| %sysdrive%\$recycle.bin |
ThreatInfo has observed steam_api_o.dll in the locations listed above. Files found in temporary folders, user profile folders, startup locations, or unusual application directories should be reviewed more carefully than files installed under a known program directory.
Geographic signal
Observed country distribution
ThreatInfo has seen steam_api_o.dll across 2 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is Canada with 80.0% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.
OS Version:
The most common operating system signal for steam_api_o.dll is Windows 10 with 100.0% of observed hits. If your system differs from the common profile, check whether the file was introduced by a specific installer, archive, or removable device.
Analysis
steam_api_o.dll is identified as pe for 32-bit systems. The subsystem is Windows GUI. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
d41d8cd98f00b204e9800998ecf8427e
ad207031ea3d98a00ff308af723937da
ad742bfdb3a68bd2cfac6c8372e4f9a5
PE section names and hashes can reveal packing, injected resources, or unusual build artifacts. Sections with uncommon names, very large raw data, or hashes that differ from a trusted copy deserve additional review.
Report conclusion
GridinSoft detects this file as Trojan.Heur!
This report identifies steam_api_o.dll by MD5 674ee82af4ddc1b3badd09ac8744d979. It is part of the Trojan report group. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.