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b0400304bf.dll

Nano Surfer

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module b0400304bf.dll by Nano Surfer has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat.
Publisher:
Nano Surfer  (signed and verified)

MD5:
81b7fa865243ea4143e3a5ba67074afb

SHA-1:
dc96503e0f9cc36c8dd13acbb3535a7bbeebd2b5

SHA-256:
8915d45802e81ba10e8358c545fdc1e3c2579ac5d4698fb5e1ea885e30e49f56

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
11/5/2024 3:49:52 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.14.3

File size:
192.7 KB (197,368 bytes)

File type:
Dynamic link library (Win32 DLL)

Common path:
C:\Program Files\nano surfer\bin\b0400304bf.dll

Digital Signature
Signed by:
Nano Surfer

Authority:
VeriSign, Inc.

Valid from:
12/17/2014 12:00:00 AM

Valid to:
12/17/2015 11:59:59 PM

Subject:
CN=Nano Surfer, O=Nano Surfer, L=Santa Monica, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
4C3408B948BFE38825B699D7ED92B282

File PE Metadata
Compilation timestamp:
1/11/2015 11:50:50 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

Entry address:
0x115D2

Entry point:
8B, FF, 55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, 0C, 91, 00, 00, FF, 75, 08, 8B, 4D, 10, 8B, 55, 0C, E8, EC, FE, FF, FF, 59, 5D, C2, 0C, 00, 8B, FF, 55, 8B, EC, 83, EC, 20, 8B, 45, 08, 56, 57, 6A, 08, 59, BE, 9C, 53, 02, 10, 8D, 7D, E0, F3, A5, 89, 45, F8, 8B, 45, 0C, 5F, 89, 45, FC, 5E, 85, C0, 74, 0C, F6, 00, 08, 74, 07, C7, 45, F4, 00, 40, 99, 01, 8D, 45, F4, 50, FF, 75, F0, FF, 75, E4, FF, 75, E0, FF, 15, 34, 50, 02, 10, C9, C2, 08, 00, 8B, FF, 55, 8B, EC, 51, 53, 8B, 45, 0C, 83, C0, 0C, 89, 45, FC, 64...
 
[+]

Entropy:
6.5646

Code size:
143.5 KB (146,944 bytes)

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