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maintainer.bak

App Bud

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

Version:
1.0.5497.35745

MD5:
ef6ac32c57da6202809cc757b1211745

SHA-1:
b326e13962a2d39d5d822e91886fa93d0fab39cb

SHA-256:
15c82200583248a4b54cf6168f063d977495d61ab2e5b1ee6fc95c25db94efb4

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:
4/29/2024 7:30:23 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.16.2

File size:
120.7 KB (123,632 bytes)

Product version:
1.0.5497.35745

Language:
English (United States)

Common path:
C:\ProgramData\7975a309-80f8-4422-b6b0-af4fcaf5cd46\maintainer.bak

Digital Signature
Signed by:
App Bud

Authority:
VeriSign, Inc.

Valid from:
7/28/2014 6:00:00 PM

Valid to:
7/29/2015 5:59:59 PM

Subject:
CN=App Bud, O=App Bud, 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:
0A0CA50CF2224C71789EEF06C8E73F38

File PE Metadata
Compilation timestamp:
1/19/2015 9:51:36 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

Entry address:
0x8A72

Entry point:
E8, 95, 57, 00, 00, E9, 7F, FE, FF, FF, 55, 8B, EC, 81, EC, 28, 03, 00, 00, A1, 68, B2, 41, 00, 33, C5, 89, 45, FC, 83, 7D, 08, FF, 57, 74, 09, FF, 75, 08, E8, 79, 45, 00, 00, 59, 83, A5, E0, FC, FF, FF, 00, 6A, 4C, 8D, 85, E4, FC, FF, FF, 6A, 00, 50, E8, 7A, F3, FF, FF, 8D, 85, E0, FC, FF, FF, 89, 85, D8, FC, FF, FF, 8D, 85, 30, FD, FF, FF, 83, C4, 0C, 89, 85, DC, FC, FF, FF, 89, 85, E0, FD, FF, FF, 89, 8D, DC, FD, FF, FF, 89, 95, D8, FD, FF, FF, 89, 9D, D4, FD, FF, FF, 89, B5, D0, FD, FF, FF, 89, BD, CC...
 
[+]

Entropy:
6.1799

Code size:
68.5 KB (70,144 bytes)

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