GridinSoft Threat Intelligence

NNSSmtp.sys file report

Under review File reputation report
MD5 d88b56f46e57d68eac8ad447bf0bb775
Latest seen 2024-01-06 23:11:45 (2 years ago)
First seen 2021-07-26 20:35:47 (4 years ago)
Size 120 KB
Publisher Panda Security, S.L.
Product Nano Network Security
Signed by Panda Security S.L.;Microsoft Windows Hardware Compatibility Publisher

Why it matters

Evidence available for this file

Detection

No final classification is available yet.

Timeline

First seen 2021-07-26 20:35:47 (4 years ago); latest analysis 2024-01-06 23:11:45 (2 years ago).

Publisher context

Company metadata: Panda Security, S.L.. Product metadata: Nano Network Security.

Digital signature

Signed by Panda Security S.L.;Microsoft Windows Hardware Compatibility Publisher. The signature is reported as valid, but signed files can still be bundled or abused.

Observed locations

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

  1. Use the hash and metadata below to verify the exact file identity.
  2. Review publisher, signature, paths, and PE details for inconsistencies.
  3. Run a local scan if the file appears unexpectedly or starts with Windows.

File context

NNSSmtp.sys is a Windows file recorded in the ThreatInfo database. It is associated with Nano Network Security. The reported company name is Panda Security, S.L.. The current detection status is Undefined, based on the latest analysis from 2024-01-06 23:11:45 (2 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: Nano Network Security
Company Name: Panda Security, S.L.
MD5: d88b56f46e57d68eac8ad447bf0bb775
Size: 120 KB
First Published: 2021-07-26 20:35:47 (4 years ago)
Latest Published: 2024-01-06 23:11:45 (2 years ago)
Status: Undefined (on last analysis)
Analysis Date: 2024-01-06 23:11:45 (2 years ago)

Overview

Signed By: Panda Security S.L.;Microsoft Windows Hardware Compatibility Publisher
Status: Valid

The signature on NNSSmtp.sys 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%\telmex\seguridad internet\drivers

ThreatInfo has observed NNSSmtp.sys 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 NNSSmtp.sys across 1 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country Mexico
Share 100.0%
Low High activity

The strongest geographic signal for this file is Mexico with 100.0% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.

OS Version:

Windows 10 100.0%

The most common operating system signal for NNSSmtp.sys 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

NNSSmtp.sys is identified as pe for 64-bit systems. The subsystem is Native. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.

Format pe
Architecture 64-bit
Subsystem Native
Entry point 0x0001d064
Image base 0x0000000000010000

PE Sections:

Sections 8
Raw data 103936

Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.

.text 91648 bytes · 88.2% of section data
MD5 3c7274e1cffd72707bf197e5fcec64e4
.rdata 4608 bytes · 4.4% of section data
MD5 ffc0eb8adfb09504c2cdfb27f4b514d9
.data 1536 bytes · 1.5% of section data
MD5 7ffd8f042a6fec94d4e8de7c0198e8e2
.pdata 2048 bytes · 2.0% of section data
MD5 06cf3e07e48139989c7b29d595c7f507
PAGE 1024 bytes · 1.0% of section data
Uncommon name
MD5 537076ca87724169ae5004ae9ee287d9
INIT 1536 bytes · 1.5% of section data
Uncommon name
MD5 1e7303ae6428bbc1e13c4ee028989c69
.rsrc 1024 bytes · 1.0% of section data
MD5 afe8e3076f5590cd7acf07fad4da307d
.reloc 512 bytes · 0.5% of section data
MD5 3d71469fee278efbb22362831af7bce0

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.

Scan with GridinSoft Anti-Malware Use a local scan if the file origin or behavior is unclear. Check this hash on VirusTotal

Recommended next steps

  • Compare the local file MD5 with d88b56f46e57d68eac8ad447bf0bb775.
  • Check the file path, publisher, and signature against the details in this report.
  • Run a GridinSoft scan if the source, path, or behavior looks unusual.