GridinSoft Threat Intelligence
postproc-55.dll file report
Why it matters
Evidence available for this file
No final classification is available yet.
First seen 2019-04-09 23:28:36 (7 years ago); latest analysis 2025-06-08 23:00:57 (a year ago).
Company metadata: FFmpeg Project. Product metadata: FFmpeg.
Signed by TBENM Corp. The signature is reported as valid, but signed files can still be bundled or abused.
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
- Use the hash and metadata below to verify the exact file identity.
- Review publisher, signature, paths, and PE details for inconsistencies.
- Run a local scan if the file appears unexpectedly or starts with Windows.
File context
postproc-55.dll is a Windows file recorded in the ThreatInfo database. It is associated with FFmpeg. The reported company name is FFmpeg Project. The current detection status is Undefined, based on the latest analysis from 2025-06-08 23:00:57 (a year ago).
ThreatInfo does not have a final classification for this file yet. Use the technical details below to compare the hash, size, signature, and observed locations with the copy found on your device.
File Details
| Product Name: | FFmpeg |
| Company Name: | FFmpeg Project |
| MD5: | 9a8460f5bd57533b2db239c8fef913ba |
| Size: | 121 KB |
| First Published: | 2019-04-09 23:28:36 (7 years ago) |
| Latest Published: | 2025-06-08 23:00:57 (a year ago) |
| Status: | Undefined (on last analysis) | |
| Analysis Date: | 2025-06-08 23:00:57 (a year ago) |
Overview
| Signed By: | TBENM Corp |
| Status: | Valid |
The signature on postproc-55.dll is reported as valid. A valid signature helps confirm publisher identity, but it does not automatically make the file safe if the installer was bundled, abused, or downloaded from an untrusted source.
Common Places:
| %programfiles% |
ThreatInfo has observed postproc-55.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 postproc-55.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 Korea, Republic of with 93.3% 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 postproc-55.dll is Windows 10 with 93.3% 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
postproc-55.dll is identified as pe for 32-bit systems. The subsystem is Windows CUI. 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.
bc2d7ff3efd3c246746da4dd8970311d
18f0a78535a076691b3da1d0c3fed453
6ad447f0e696ea1e4f059eee8b4d69ef
00000000000000000000000000000000
22d27e9dc0c9c5fd43b3cbc9e19cbd49
02b514699aa97548ab95926a28268fd6
37db72b36afbb9558fff09dd118471b9
bf619eac0cdf3f68d496ea9344137e8b
db9a5074ec640b5796878df1dbda364f
3311923d5736d0cb2ced2ae7be9cb4db
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
This file is still under review
ThreatInfo has not assigned a final verdict yet. Compare the file hash, location, signature, and publisher before trusting the file on a production system.