GridinSoft Threat Intelligence
zlib1.dll file report
Why it matters
Evidence available for this file
No final classification is available yet.
First seen 2017-06-26 14:04:37 (8 years ago); latest analysis 2021-01-10 13:45:53 (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 2021-01-10 13:45:53 (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: | 15d6af5c659fe2d9524dd9a90a674d02 |
| Size: | 83 KB |
| First Published: | 2017-06-26 14:04:37 (8 years ago) |
| Latest Published: | 2021-01-10 13:45:53 (5 years ago) |
| Status: | Undefined (on last analysis) | |
| Analysis Date: | 2021-01-10 13:45:53 (5 years ago) |
Common Places:
| %appdata% |
| %appdata%\flash |
| %programs%\easy miner\cgminer |
| %appdata%\wisemanager |
| %sysdrive%\miner |
| %sysdrive%\miner\simple gpu miner |
| %sysdrive%\miner\mainer\razrabotka\guiminer-scrypt-win_x64-v0.05-20140818\guiminer-scrypt-win_x64-v0.05-20140818 |
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 11 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is Russian Federation with 55.4% 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 7 with 61.5% 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 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.
bd995aee3c439e93881053e8439c74f7
830d2aadf8fc189d543e45378d03e884
4a83e10258dd8af8f905547240337b00
00000000000000000000000000000000
545d2bf3db1536e4604fb62ac78f16a1
846cbddc7fe7a4cc91f6be884ce84083
22ba28e4b189db4233bc81ad87f76bcc
4c03537cb6e9194d88879f3fd0781044
a51ba9a0b35548dc64e66a6b13cd225e
efaf1a8d621a3ada24720c1087545bad
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.