GridinSoft Threat Intelligence
zlib1.dll file report
Why it matters
Evidence available for this file
No final classification is available yet.
First seen 2017-05-22 00:07:34 (9 years ago); latest analysis 2021-02-14 04:23:43 (5 years ago).
Product metadata: zlib.
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
zlib1.dll is a Windows file recorded in the ThreatInfo database. It is associated with zlib. The current detection status is Undefined, based on the latest analysis from 2021-02-14 04:23:43 (5 years 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: | zlib |
| MD5: | bf680acd14c87eae9b10ecdf48f26eaa |
| Size: | 87 KB |
| First Published: | 2017-05-22 00:07:34 (9 years ago) |
| Latest Published: | 2021-02-14 04:23:43 (5 years ago) |
| Status: | Undefined (on last analysis) | |
| Analysis Date: | 2021-02-14 04:23:43 (5 years ago) |
Common Places:
| %appdata%\microsoft\windows\themes |
| %appdata% |
| %localappdata% |
| %windir%\fonts |
| %programfiles%\windows media player\medbin |
| %appdata%\audiohdriver |
| %windir% |
| %appdata%\microsoft\windows |
| %profile%\downloads\compressed\momer\cryptonote-easy-miner_v0.0.3\binaries\cpuminer |
| %profile%\downloads\compressed\momer\cryptonote-easy-miner-0.0.3\cryptonote-easy-miner-0.0.3\cryptonoteminer\binaries\cpuminer |
ThreatInfo has observed zlib1.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 zlib1.dll across 42 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is Sudan with 19.2% 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 zlib1.dll is Windows 10 with 48.8% 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
zlib1.dll is identified as pe for 64-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.
c5150f97b5a4e961b39f9a895906b9ce
8d7763ed1ec00aef42bcb405d822e665
a6e1547dc992ddd5641706a8d36e8e5f
00000000000000000000000000000000
f0f486e1831e5ccf5efcd50014547203
3a11726214d2e1d504da2db818ec382c
c2d25530778f1a565499118bda3eb5a7
2c7f0864e7369e9c00b68c681418d8da
0d87ee6fb34083a9506f40d3671909f3
3b4079d58727e4937ecff70d0de71abf
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.