GridinSoft Threat Intelligence

nsib.dll threat report

Detected as Adware.Perion File reputation report
MD5 b1f5fa49463a3e8d6e62a37416a0e6d3
Latest seen 2022-03-20 23:20:21 (4 years ago)
First seen 2017-06-06 17:08:19 (8 years ago)
Size 1 MB
Signed by Perion Network Ltd.

GridinSoft Anti-Malware detection

Detected by GridinSoft before you download

The current ThreatInfo record shows this exact file hash detected as Adware.Perion. Download GridinSoft Anti-Malware to scan the device, confirm whether this file is present, and remove the detected object if it is found.

Detection name
Adware.Perion
Recommended action
Scan and remove
Last analysis
2022-03-20 23:20:21 (4 years ago)
File hash
b1f5fa49463a3e8d6e62a37416a0e6d3
Download Anti-Malware

Why it matters

Why GridinSoft flags this file

Detection

GridinSoft identifies the sample as Adware.Perion.

Timeline

First seen 2017-06-06 17:08:19 (8 years ago); latest analysis 2022-03-20 23:20:21 (4 years ago).

Digital signature

Signed by Perion Network Ltd.. 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. Compare the MD5 above with the file found on the device.
  2. Check whether the file appears in the observed locations or under one of the alternate names.
  3. Run GridinSoft Anti-Malware to confirm the detection and remove the file if it is present.

File context

nsib.dll is a Windows file recorded in the ThreatInfo database. The current detection status is Adware.Perion, based on the latest analysis from 2022-03-20 23:20:21 (4 years ago).

If nsib.dll appears on your computer unexpectedly, treat it as suspicious. Check its location, digital signature, and recent system changes before allowing it to run. A full anti-malware scan is recommended when this file is detected as Adware.Perion.

File Details

MD5: b1f5fa49463a3e8d6e62a37416a0e6d3
Size: 1 MB
First Published: 2017-06-06 17:08:19 (8 years ago)
Latest Published: 2022-03-20 23:20:21 (4 years ago)
Status: Adware.Perion (on last analysis)
Analysis Date: 2022-03-20 23:20:21 (4 years ago)

Detection screenshot

nsib.dll detection screenshot

The screenshot is a visual record of a GridinSoft Anti-Malware detection for this sample. Use the hash and metadata above as the primary identifiers when comparing the file on your system.

Overview

Signed By: Perion Network Ltd.
Status: Valid

The signature on nsib.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:

%system%\mjcm\5141
%system%\mjcm

ThreatInfo has observed nsib.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 nsib.dll across 25 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country Israel
Share 14.6%
Low High activity

The strongest geographic signal for this file is Israel with 14.6% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.

OS Version:

Windows 7 56.3%
Windows 10 27.1%
Windows XP 14.6%
Windows Vista 2.1%

The most common operating system signal for nsib.dll is Windows 7 with 56.3% 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

nsib.dll is identified as pe for 32-bit systems. The subsystem is Windows GUI. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.

Format pe
Architecture 32-bit
Subsystem Windows GUI
Entry point 0x00137f06
Image base 0x10000000

PE Sections:

Sections 9
Raw data 1771008

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

CODE 135680 bytes · 7.7% of section data
MD5 7f0ccbab4f1ee76b591fa2e161a63a61
.text 1211904 bytes · 68.4% of section data
MD5 552cef418433ae8ac2badcd81ec8e216
.rdata 240128 bytes · 13.6% of section data
MD5 364cf87063da61296d46a4bea2836a37
.data 15872 bytes · 0.9% of section data
MD5 0c9e9d5ad17c4d64ec07be526e46a723
DATA 5632 bytes · 0.3% of section data
MD5 cf68a3b6cb3cca7ed8263315a8a2c767
BSS 2048 bytes · 0.1% of section data
MD5 c99a74c555371a433d121f551d6c6398
.shared 512 bytes · 0.0% of section data
Uncommon name
MD5 bf619eac0cdf3f68d496ea9344137e8b
.rsrc 62976 bytes · 3.6% of section data
MD5 7e6452e6700cad413d19d32abd12916e
.reloc 96256 bytes · 5.4% of section data
MD5 3fb506ad1655a37a9bd944c322715261

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

GridinSoft detects this file as Adware.Perion

This report identifies nsib.dll by MD5 b1f5fa49463a3e8d6e62a37416a0e6d3. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.

Download GridinSoft Anti-Malware Scan the device and confirm whether this exact hash is present. Check this hash on VirusTotal

Recommended next steps

  • Compare the local file MD5 with b1f5fa49463a3e8d6e62a37416a0e6d3.
  • Check the file path, publisher, and signature against the details in this report.
  • Run a GridinSoft scan and remove the object if the same hash is found.