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maintainer.exe

SurfEnhance

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application maintainer.exe by SurfEnhance has been detected as adware by 26 anti-malware scanners. It runs as a separate (within the context of its own process) windows Service named “MaintainerSvc4.07.4104264”. 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:
SurfEnhance  (signed and verified)

Version:
1.0.5431.26375

MD5:
f02a841cacd72ba992ce3f7d79b237c5

SHA-1:
37e595d1601beb55a4588827d687cbe4e044b44e

SHA-256:
8742ab6a0668f23640782ec3c9cb16daead49cd08d8b85c19b6a388dd002eaa0

Scanner detections:
26 / 68

Status:
Adware

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

Analysis date:
4/25/2024 9:38:23 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Adware.SwiftBrowse.1
778

AhnLab V3 Security
Adware/Win32.SwiftBrowse
2014.11.19

Avira AntiVirus
ADWARE/BrowseFox.Gen7
7.11.187.4

avast!
Win32:Adware-BYZ [PUP]
2014.9-141218

AVG
Generic
2015.0.3256

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.141218

Bitdefender
Gen:Variant.Adware.SwiftBrowse.1
1.0.20.1760

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

Dr.Web
Trojan.BPlug.281
9.0.1.0352

Emsisoft Anti-Malware
Gen:Variant.Adware.SwiftBrowse
8.14.12.18.11

ESET NOD32
Win32/BrowseFox
8.10744

Fortinet FortiGate
Adware/Yotoon
12/18/2014

F-Prot
W32/A-de841313
v6.4.7.1.166

F-Secure
Gen:Variant.Adware.SwiftBrowse.1
11.2014-18-12_5

G Data
Gen:Variant.Adware.SwiftBrowse
14.12.24

IKARUS anti.virus
not-a-virus:AdWare.Yotoon
t3scan.1.8.3.0

K7 AntiVirus
Trojan
13.185.14057

McAfee
Artemis!F02A841CACD7
5600.6912

MicroWorld eScan
Gen:Variant.Adware.SwiftBrowse.1
15.0.0.1056

NANO AntiVirus
Riskware.Win32.Kranet.dgiwfc
0.28.6.63474

Panda Antivirus
Trj/CI.A
14.12.18.11

Qihoo 360 Security
Win32/Virus.Adware.708
1.0.0.1015

Reason Heuristics
PUP.Service.SurfEnhance.K
14.12.18.23

Sophos
Generic PUA DH
4.98

Vba32 AntiVirus
AdWare.Kranet
3.12.26.3

Zillya! Antivirus
Adware.Kranet.Win32.476
2.0.0.1984

File size:
120.8 KB (123,680 bytes)

Product version:
1.0.5431.26375

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\ProgramData\398c0b96-ebd3-4f67-a5c7-1899a15c12be\maintainer.exe

Digital Signature
Signed by:
SurfEnhance

Authority:
VeriSign, Inc.

Valid from:
9/26/2013 8:00:00 PM

Valid to:
9/27/2015 7:59:59 PM

Subject:
CN=SurfEnhance, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=SurfEnhance, 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:
052C87532FBD523C55FB8703A352F6AB

File PE Metadata
Compilation timestamp:
11/14/2014 5:39:17 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:mK35/9oxfTk+CvYvn6tPQI0ypxCON3bZvB:mKCLPCv8ELNrZvB

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:
6.1804

Code size:
68.5 KB (70,144 bytes)

Service
Display name:
MaintainerSvc4.07.4104264

Type:
Win32OwnProcess

Depends on:
RPCSS


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