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plainsavingsbho.dll

Plain Savings

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module plainsavingsbho.dll by Plain Savings has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It is installed within the context of Internet Explore as a BHO (Browser Helper Object) under the name ‘Plain Savings 1.0.0.7’. The file has been seen being downloaded from install-cdn.plainsavingscenter.com.
Publisher:
Plain Savings  (signed and verified)

Product:
Plain Savings

Version:
1.0.0.7

MD5:
00391d1324dc5cfca000062c953d9405

SHA-1:
4305b85af2de846cb0db64fdc42f97740b9fd03f

SHA-256:
d2a060800eed7eaf73086ba5b0817f81ed2550fe80b85efd3122c2e5c1dcfeac

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:
1/13/2025 2:59:22 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.PlainSav (M)
16.4.3.4

File size:
262.7 KB (269,048 bytes)

Product version:
1.0.0.7

Copyright:
(c) Plain Savings. All rights reserved.

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\Program Files\plain savings\plainsavingsbho.dll

Digital Signature
Signed by:
Plain Savings

Authority:
VeriSign, Inc.

Valid from:
3/9/2015 9:00:00 PM

Valid to:
3/9/2016 8:59:59 PM

Subject:
CN=Plain Savings, O=Plain Savings, L=San Diego, 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:
3278FBA8062F9F07CFB8AF40EED9D7B1

File PE Metadata
Compilation timestamp:
4/28/2015 5:13:38 AM

OS version:
6.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:9gCm0/fEbUppVqU+kB3hh+48F63wY+oM9ZKT1KlxScIA:9gCm00GpVek3/d09Z9XhH

Entry address:
0xF515

Entry point:
55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, EA, 7E, 00, 00, FF, 75, 10, FF, 75, 0C, FF, 75, 08, E8, 07, 00, 00, 00, 83, C4, 0C, 5D, C2, 0C, 00, 6A, 0C, 68, D8, 21, 03, 10, E8, 4C, 02, 00, 00, 33, C0, 40, 8B, 75, 0C, 85, F6, 75, 0C, 39, 35, 6C, 77, 03, 10, 0F, 84, E4, 00, 00, 00, 83, 65, FC, 00, 83, FE, 01, 74, 05, 83, FE, 02, 75, 35, 8B, 0D, C4, 93, 02, 10, 85, C9, 74, 0C, FF, 75, 10, 56, FF, 75, 08, FF, D1, 89, 45, E4, 85, C0, 0F, 84, B1, 00, 00, 00, FF, 75, 10, 56, FF, 75, 08, E8, 11, FE, FF, FF, 89, 45, E4...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
159 KB (162,816 bytes)

Internet Explorer BHO
Display name:
Plain Savings 1.0.0.7

CLSID:
{dc85b379-fe3b-447d-bef1-faaaf8359aef}


The file plainsavingsbho.dll has been seen being distributed by the following URL.

http://install-cdn.plainsavingscenter.com/bed?r=2015042816&bet=3

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