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maintainer.exe

TessView

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application maintainer.exe by TessView has been detected as adware by 28 anti-malware scanners. It runs as a separate (within the context of its own process) windows Service named “MaintainerSvc3.32.7672459”. 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:
TessView  (signed and verified)

Version:
1.0.5468.38684

MD5:
c0bba8911a3a5ae09ce025a597788c23

SHA-1:
7021ce0f6cb78c0c764f09b953686ec052d3acc4

SHA-256:
f966fa198cb1a5a6817980599ba113310de5fc2683c3e19993e71e337c055541

Scanner detections:
28 / 68

Status:
Adware

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

Analysis date:
5/10/2024 4:16:37 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Adware.SwiftBrowse.1
6213306

AhnLab V3 Security
Adware/Win32.SwiftBrowse
2014.12.22

Avira AntiVirus
ADWARE/BrowseFox.Gen7
7.11.197.26

avast!
Win32:Adware-BYZ [PUP]
141214-1

AVG
Adware Generic6.DAP
2014.0.4235

Bitdefender
Gen:Variant.Adware.SwiftBrowse.1
1.0.20.1780

Clam AntiVirus
Win.Adware.Agent-22685
0.98/19819

Comodo Security
Application.Win32.BrowseFox.B
20438

Dr.Web
Trojan.BPlug.281
9.0.1.05190

Emsisoft Anti-Malware
Gen:Variant.Adware.SwiftBrowse
9.0.0.4668

ESET NOD32
Win32/BrowseFox.V potentially unwanted application
7.0.302.0

F-Prot
W32/A-de841313
v6.4.7.1.166

F-Secure
Gen:Variant.Adware.SwiftBrowse.1
5.13.68

G Data
Gen:Variant.Adware.SwiftBrowse
14.12.24

IKARUS anti.virus
AdWare.SwiftBrowse
t3scan.1.8.5.0

K7 AntiVirus
Trojan
13.188.14395

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

Malwarebytes
PUP.Optional.SwiftBrowse
v2014.12.22.02

McAfee
Program.BrowseFox-FTR
16.8.708.2

MicroWorld eScan
Gen:Variant.Adware.SwiftBrowse.1
15.0.0.1068

NANO AntiVirus
Riskware.Win32.Kranet.dgiwfc
0.28.6.64267

Norman
Gen:Variant.Adware.SwiftBrowse.1
04.12.2014 14:30:06

nProtect
Trojan-Clicker/W32.Yotoon.123680
14.12.19.01

Quick Heal
AdWare.Yotoon.A5
12.14.14.00

Reason Heuristics
PUP.Service.TessView.K
14.12.22.2

SUPERAntiSpyware
Adware.SwiftBrowse
10163

Vba32 AntiVirus
AdWare.Yotoon
3.12.26.3

Zillya! Antivirus
Adware.Kranet.Win32.476
2.0.0.2012

File size:
120.8 KB (123,680 bytes)

Product version:
1.0.5468.38684

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\ProgramData\e5c4ef79-068a-447e-b589-daa814c96056\maintainer.exe

Digital Signature
Signed by:
TessView

Authority:
VeriSign, Inc.

Valid from:
2/4/2014 3:30:00 AM

Valid to:
2/5/2015 3:29:59 AM

Subject:
CN=TessView, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=TessView, 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:
3F35E503136B53896D71C7902553287E

File PE Metadata
Compilation timestamp:
12/22/2014 8:59:36 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:VK35/9oxfTk+Yvn6sPQI0ypxCO+XbZvx8:VKCLP8xL+LZvx8

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:
6.1802

Code size:
68.5 KB (70,144 bytes)

Service
Display name:
MaintainerSvc3.32.7672459

Type:
Win32OwnProcess

Depends on:
RPCSS


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