home

maintainer.exe

focusbase

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application maintainer.exe by focusbase has been detected as adware by 32 anti-malware scanners. It runs as a separate (within the context of its own process) windows Service named “MaintainerSvc1.02.0852221”. 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:
focusbase  (signed and verified)

Version:
1.0.5542.22259

MD5:
7cb4c1fbae9169acf71984899f27c515

SHA-1:
3bb2a12301b3618665743df60903134682f53df3

SHA-256:
af78255cdcdf59ffd2c42f8507dea53ab9883abf5c824d954e7c9f8ee1dc2147

Scanner detections:
32 / 68

Status:
Adware

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

Analysis date:
4/23/2024 9:04:12 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CO
6765824

AhnLab V3 Security
Adware/Win32.SwiftBrowse
2015.03.06

Avira AntiVirus
Adware/BrowseFox.aoy
7.11.214.34

avast!
Win32:PUP-gen [PUP]
150101-1

AVG
Adware Generic6.DAP
2014.0.4257

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1535

Bitdefender
Adware.SwiftBrowse.CO
1.0.20.320

Bkav FE
W32.HfsAdware
1.3.0.6379

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

Comodo Security
Application.Win32.BrowseFox.B
21306

Dr.Web
Trojan.BPlug.281
9.0.1.05190

Emsisoft Anti-Malware
Adware.SwiftBrowse.CO
9.0.0.4799

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.CO
5.13.68

G Data
Adware.SwiftBrowse.CO
15.3.25

herdProtect (fuzzy)
variant of maintainer.bak (Adware)
2015.6.12.13

K7 AntiVirus
Trojan
13.200.15176

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

Malwarebytes
PUP.Optional.SwiftBrowse
v2015.03.05.08

McAfee
Program.BrowseFox-FTR
16.8.708.2

MicroWorld eScan
Adware.SwiftBrowse.CO
16.0.0.192

NANO AntiVirus
Riskware.Win32.Kranet.dgiwfc
0.30.0.296

Norman
Adware.SwiftBrowse.CO
03.12.2014 13:20:04

nProtect
Trojan-Clicker/W32.Yotoon.123680
15.03.05.01

Panda Antivirus
Adware/BrowserFox
15.03.05.08

Quick Heal
AdWare.Yotoon.A5
3.15.14.00

Reason Heuristics
PUP.Service.Yontoo
15.3.5.20

SUPERAntiSpyware
Adware.SwiftBrowse
10015

Vba32 AntiVirus
AdWare.Yotoon
3.12.26.3

VIPRE Antivirus
Threat.4741131
38050

Zillya! Antivirus
Adware.Kranet.Win32.476
2.0.0.2089

File size:
120.8 KB (123,680 bytes)

Product version:
1.0.5542.22259

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\ProgramData\f1c11deb-468d-4e28-a37d-be8513e1bc56\maintainer.exe

Digital Signature
Signed by:
focusbase

Authority:
VeriSign, Inc.

Valid from:
4/22/2014 1:00:00 AM

Valid to:
4/23/2015 12:59:59 AM

Subject:
CN=focusbase, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=focusbase, 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:
229BE95AFAF17766126629CC0A897C5F

File PE Metadata
Compilation timestamp:
3/5/2015 9:22:05 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:eK35/9oxfTk+Nzvn6dPQI0ypxCOwXbZvR:eKCLPFkLwLZvR

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:
MaintainerSvc1.02.0852221

Type:
Win32OwnProcess

Depends on:
RPCSS


Remove maintainer.exe - Powered by Reason Core Security
herdProtect is a second line of defense malware removal platform powered by 68 anti-malware engines in the cloud. Since no single anti-malware program is perfect 100% of the time, herdProtect utilizes a 'herd' of multiple engines to guarantee the widest coverage and the earliest possible detection.