zlib.dll file report
ThreatInfo file report
zlib.dll
Why it matters
Evidence available for this file
No final classification is available yet.
First seen 2017-05-27 11:10:37 (8 years ago); latest analysis 2026-04-17 23:00:15 (2 weeks ago).
This hash has appeared under multiple file names, which can happen with repackaging, bundling, or deliberate renaming.
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
zlib.dll is a Windows file recorded in the ThreatInfo database. It is associated with Zlib. The reported company name is Zlib. The current detection status is Undefined, based on the latest analysis from 2026-04-17 23:00:15 (2 weeks 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 |
| Company Name: | Zlib |
| MD5: | c7d4d685a0af2a09cbc21cb474358595 |
| Size: | 73 KB |
| First Published: | 2017-05-27 11:10:37 (8 years ago) |
| Latest Published: | 2026-04-17 23:00:15 (2 weeks ago) |
| Status: | Undefined (on last analysis) | |
| Analysis Date: | 2026-04-17 23:00:15 (2 weeks ago) |
Common Places:
| %appdata%\tencent\qqgametempest\minigames\kov3 |
| %programfiles%\mgdisk |
| %appdata% |
| %programfiles%\zaxar |
| %programfiles%\enjoywifi |
| %programfiles%\tencent\qqgame\kof02um |
| %appdata%\tencent\qqgametempest\minigames\kof02um |
| %programfiles%\tencent\qqgame\minigames\kovsh |
| %programfiles%\mplayerforwindows\codecs |
| %programfiles% |
ThreatInfo has observed zlib.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.
File Names:
| zlib1.dll |
| zlib.dll |
This hash has been seen with multiple file names. Alternate names can appear when software is updated, copied between folders, packed by an installer, or deliberately renamed to avoid recognition. Compare the exact MD5 above before assuming two names refer to the same file.
Geography:
| 21.7% | ||
| 7.8% | ||
| 7.8% | ||
| 7.0% | ||
| 6.5% | ||
| 5.2% | ||
| 3.4% | ||
| 3.1% | ||
| 2.6% | ||
| 2.3% | ||
| 2.3% | ||
| 2.1% | ||
| 1.8% | ||
| 1.6% | ||
| 1.6% | ||
| 1.6% | ||
| 1.3% | ||
| 1.0% | ||
| 1.0% | ||
| 1.0% | ||
| 1.0% | ||
| 1.0% | ||
| 1.0% | ||
| 1.0% | ||
| 1.0% | ||
| 1.0% | ||
| 1.0% | ||
| 0.8% | ||
| 0.8% | ||
| 0.8% | ||
| 0.5% | ||
| 0.5% | ||
| 0.5% | ||
| 0.5% | ||
| 0.5% | ||
| 0.5% | ||
| 0.5% | ||
| 0.5% | ||
| 0.5% | ||
| 0.5% | ||
| 0.3% | ||
| 0.3% | ||
| 0.3% | ||
| 0.3% | ||
| 0.3% | ||
| 0.3% | ||
| 0.3% | ||
| 0.3% | ||
| 0.3% | ||
| 0.3% | ||
| 0.3% |
The strongest geographic signal for this file is Ukraine with 21.7% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.
OS Version:
| Windows 10 | 64.7% | |
| Windows 7 | 25.0% | |
| Windows 8.1 | 8.8% | |
| Windows 8 | 0.8% | |
| Windows Vista | 0.5% | |
| Windows Server 2008 R2 | 0.3% |
The most common operating system signal for zlib.dll is Windows 10 with 64.7% 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
zlib.dll is identified as pe for 32 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.
| Subsystem: | Windows CUI |
| PE Type: | pe |
| OS Bitness: | 32 |
| Image Base: | 0x61b80000 |
| Entry Address: | 0x00001000 |
PE Sections:
| Name | Size of data | MD5 |
| .text | 65024 | fb3eaf5f44062b7d42dbd85cc675d83e |
| .data | 512 | bd7e579b89c755c8500d95e13eab3504 |
| .bss | 0 | 00000000000000000000000000000000 |
| .edata | 2048 | e26b95848ef2f8c86d11449797fd50e2 |
| .idata | 1024 | 323b2c261624a2ea56fe3c3757a9653b |
| .rsrc | 4608 | 36ccbb297d53d3e054df3bafe19ed25b |
| .reloc | 1024 | 9f7837634a6ec513794db623c0eadbe5 |
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.
More information:
