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maintainer.exe

wisen wizard

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application maintainer.exe by wisen wizard has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a separate (within the context of its own process) windows Service named “MaintainerSvc3.96.1228305”.
Publisher:
wisen wizard  (signed and verified)

Version:
1.0.5483.14199

MD5:
542dcc7405e18c4c1dd3b5e37918a75c

SHA-1:
43a7e258598fbc9ec01e7f7bfdfd66c3747ecdb4

SHA-256:
c6f680ad926d125d6c35cc480e3aacff435b0a6f20d0c22fa59b80857781058d

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:
12/24/2024 11:31:23 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.16.12

File size:
120.7 KB (123,632 bytes)

Product version:
1.0.5483.14199

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\ProgramData\1b8e1e41-6357-40c6-af7d-e0a31a7bdb02\maintainer.exe

Digital Signature
Signed by:
wisen wizard

Authority:
VeriSign, Inc.

Valid from:
11/4/2014 2:00:00 AM

Valid to:
1/4/2016 1:59:59 AM

Subject:
CN=wisen wizard, O=wisen wizard, 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:
45541320B8397C6E6F3911B79013E8AE

File PE Metadata
Compilation timestamp:
1/5/2015 5:53:26 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:
6.1816

Code size:
68.5 KB (70,144 bytes)

Service
Display name:
MaintainerSvc3.96.1228305

Type:
Win32OwnProcess

Depends on:
RPCSS


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