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maintainer.bak

RightSurf

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file maintainer.bak by RightSurf has been detected as adware by 32 anti-malware scanners. 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:
RightSurf  (signed and verified)

Version:
1.0.5502.26402

MD5:
debcc24c9af3f7d758ab9dc36d59a347

SHA-1:
47026663ed87d71f9e8d63eb1f4213ea28709bfa

SHA-256:
af6f574a58c8528ce2baec4fb4a6c5ac5c332153a481fc9013b1fa7efa588ea5

Scanner detections:
32 / 68

Status:
Adware

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

Analysis date:
4/25/2024 11:58:35 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.AU
6434017

AhnLab V3 Security
Adware/Win32.SwiftBrowse
2015.01.25

Avira AntiVirus
ADWARE/BrowseFox.Gen7
7.11.204.248

avast!
Win32:Adware-BYZ [PUP]
150101-1

AVG
Adware Generic6.DAP
2014.0.4257

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.15125

Bitdefender
Adware.BrowseFox.AU
1.0.20.125

Bkav FE
W32.HfsAdware
1.3.0.6379

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

Comodo Security
Application.Win32.BrowseFox.B
20835

Dr.Web
Trojan.BPlug.281
9.0.1.05190

Emsisoft Anti-Malware
Adware.BrowseFox.AU
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.BrowseFox.AU
5.13.68

G Data
Adware.BrowseFox.AU
15.1.24

IKARUS anti.virus
AdWare.SwiftBrowse
t3scan.1.8.6.0

K7 AntiVirus
Trojan
13.192.14746

Malwarebytes
PUP.Optional.SwiftBrowse
v2015.01.25.01

McAfee
BrowseFox-FTR
5600.6875

MicroWorld eScan
Adware.BrowseFox.AU
16.0.0.75

NANO AntiVirus
Riskware.Win32.Kranet.dgiwfc
0.30.0.64812

Norman
Gen:Variant.Adware.SwiftBrowse.1
03.12.2014 13:20:04

nProtect
Trojan-Clicker/W32.Yotoon.123632
15.01.23.01

Quick Heal
AdWare.Yotoon.A5
1.15.14.00

Reason Heuristics
PUP.Yontoo
15.1.25.1

SUPERAntiSpyware
Adware.SwiftBrowse
10095

Trend Micro House Call
TROJ_GEN.R0C1C0EAO15
7.2.25

Trend Micro
TROJ_GEN.R0C1C0EAO15
10.465.25

Vba32 AntiVirus
AdWare.Yotoon
3.12.26.3

VIPRE Antivirus
Threat.4741131
36694

Zillya! Antivirus
Adware.Kranet.Win32.476
2.0.0.2044

File size:
120.7 KB (123,632 bytes)

Product version:
1.0.5502.26402

Language:
English (United States)

Common path:
C:\ProgramData\application data\f4e5cafa-041c-4d83-9f44-9e0fef4a1387\maintainer.bak

Digital Signature
Signed by:
RightSurf

Authority:
VeriSign, Inc.

Valid from:
11/4/2014 5:30:00 AM

Valid to:
1/4/2016 5:29:59 AM

Subject:
CN=RightSurf, O=RightSurf, 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:
1E8F736F9D4CC702BAD040A691E0353D

File PE Metadata
Compilation timestamp:
1/25/2015 4:10:11 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
1536:43eRgxyOpGX5sfnC6P2dV59IikYYf9J892bbY+mLbcQ/Wm1sWjcdbPQI0ypxCO8R:oK35/9oxfTk+gvn6bPQI0ypxCOfXbZvw

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:
6.1805

Code size:
68.5 KB (70,144 bytes)

Remove maintainer.bak - Powered by Reason Core Security
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