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c631b7aabe97487a92fdb816901e308664.dll

Beta Rez

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module c631b7aabe97487a92fdb816901e308664.dll, “TODO: <File description>” by Beta Rez has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat.
Publisher:
TODO: <Company name>  (signed by Beta Rez)

Description:
TODO: <File description>

Version:
4.0.0.3

MD5:
fcad9a5ac68ddfacc57f112a87625bc6

SHA-1:
1ef8c3551e5b4b214887e5b7bac79d9ccd3a1122

SHA-256:
c360dde1a0dcf48fff5279975fdc1d9a48c809840c67f83762f41da509df4469

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:
4/5/2026 2:31:33 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
16.10.27.11

File size:
250.7 KB (256,752 bytes)

Product version:
4.0.0.3

Copyright:
TODO: (c) <Company name>. All rights reserved.

File type:
Dynamic link library (Win64 DLL)

Language:
English (United States)

Common path:
C:\Program Files\beta rez\bin\c631b7aabe97487a92fdb816901e308664.dll

Digital Signature
Signed by:
Beta Rez

Authority:
VeriSign, Inc.

Valid from:
3/10/2015 7:00:00 PM

Valid to:
4/9/2016 6:59:59 PM

Subject:
CN=Beta Rez, O=Beta Rez, 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:
1EFCFAF7CDCBA99CF6B0644BA639545E

File PE Metadata
Compilation timestamp:
1/11/2015 5:51:28 AM

OS version:
5.2

OS bitness:
Win64

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
6144:Tr72S8iPKc/27KjT/ZwnNBTVOTBBUy3wqqwkMs83R:n72+Kc/XjT6jGAqqWB

Entry address:
0x1A090

Entry point:
48, 89, 5C, 24, 08, 48, 89, 74, 24, 10, 57, 48, 83, EC, 20, 49, 8B, F8, 8B, DA, 48, 8B, F1, 83, FA, 01, 75, 05, E8, 2F, 60, 00, 00, 4C, 8B, C7, 8B, D3, 48, 8B, CE, 48, 8B, 5C, 24, 30, 48, 8B, 74, 24, 38, 48, 83, C4, 20, 5F, E9, A7, FE, FF, FF, CC, CC, CC, 48, 8D, 05, 49, 62, 00, 00, 48, 8D, 0D, 92, 6D, 00, 00, 48, 89, 05, C3, 01, 02, 00, 48, 8D, 05, 24, 62, 00, 00, 48, 89, 0D, AD, 01, 02, 00, 48, 89, 05, B6, 01, 02, 00, 48, 8D, 05, 17, 62, 00, 00, 48, 89, 0D, C0, 01, 02, 00, 48, 89, 05, A9, 01, 02, 00, 48...
 
[+]

Entropy:
6.0647

Code size:
156.5 KB (160,256 bytes)

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