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maintainer.exe

WiseEnhance

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application maintainer.exe by WiseEnhance has been detected as adware by 25 anti-malware scanners. It runs as a separate (within the context of its own process) windows Service named “MaintainerSvc5.00.026944”. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages.
Publisher:
WiseEnhance  (signed and verified)

Version:
1.0.5440.8342

MD5:
7933c1ae1b2b49d5ca92d9ffec95247d

SHA-1:
86ed0e309cd755bf65e26a86241932c872439b8c

SHA-256:
e0d49b5006f7c658f18fdfbfbfbe231ffb8af233b9b02ecb460e70c841fc489e

Scanner detections:
25 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
4/25/2024 6:20:42 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CN
5828757

AhnLab V3 Security
Adware/Win32.SwiftBrowse
2014.11.24

Avira AntiVirus
ADWARE/BrowseFox.Gen7
7.11.188.80

avast!
Win32:Adware-BYZ [PUP]
141119-1

AVG
Wihance
2015.0.3282

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.141123

Bitdefender
Adware.SwiftBrowse.CN
1.0.20.1635

Clam AntiVirus
Win.Adware.Agent-22685
0.98/21511

Comodo Security
Application.Win32.BrowseFox.B
20172

Dr.Web
Trojan.BPlug.281
9.0.1.05190

Emsisoft Anti-Malware
Adware.SwiftBrowse.CN
9.0.0.4570

ESET NOD32
Win32/BrowseFox.V potentially unwanted application
7.0.302.0

F-Prot
W32/A-de841313
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.CN
11.2014-23-11_1

G Data
Adware.SwiftBrowse.CN
14.11.24

K7 AntiVirus
Trojan
13.185.14098

Kaspersky
not-a-virus:AdWare.Win32.Yotoon
15.0.0.543

MicroWorld eScan
Adware.SwiftBrowse.CN
15.0.0.981

NANO AntiVirus
Riskware.Win32.Kranet.dgiwfc
0.28.6.63474

nProtect
Adware.SwiftBrowse.CN
14.11.21.01

Qihoo 360 Security
HEUR/QVM10.1.Malware.Gen
1.0.0.1015

Reason Heuristics
PUP.Service.WiseEnhance.K
14.11.23.8

Vba32 AntiVirus
AdWare.Kranet
3.12.26.3

VIPRE Antivirus
Threat.4741131
35010

Zillya! Antivirus
Adware.Kranet.Win32.476
2.0.0.1991

File size:
120.8 KB (123,680 bytes)

Product version:
1.0.5440.8342

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\ProgramData\25e9dd31-9f4d-45f2-8dac-1413f8cec2c0\maintainer.exe

Digital Signature
Signed by:
WiseEnhance

Authority:
VeriSign, Inc.

Valid from:
1/9/2014 1:00:00 AM

Valid to:
1/10/2015 12:59:59 AM

Subject:
CN=WiseEnhance, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=WiseEnhance, 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:
31A5491EFDDBA1099808F5647A45617E

File PE Metadata
Compilation timestamp:
11/23/2014 1:38:12 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
1536:S3eRgxyOpGX5sfnC6P2dV59IikYYf9J892bbY+mlbcQ/Wm1sWjcdaPQI0ypxCO8o:2K35/9oxfTk+Ovn6aPQI0ypxCOpXbZvj

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...
 
[+]

Code size:
68.5 KB (70,144 bytes)

Service
Display name:
MaintainerSvc5.00.026944

Type:
Win32OwnProcess

Depends on:
RPCSS


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