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maintainer.bak

Scan Tack

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file maintainer.bak by Scan Tack has been detected as adware by 24 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:
Scan Tack  (signed and verified)

Version:
1.0.5421.15868

MD5:
c8c39e37eb58b850b9c3c7c3925254de

SHA-1:
1d939cf8e6b656adfe2a50228e63fdd3e37f5aaa

SHA-256:
45c4ac98e3911bba903f5a50c21e410197da3e8c6c4fb7c23e721305194deb51

Scanner detections:
24 / 68

Status:
Adware

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

Analysis date:
4/27/2024 3:01:43 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.Y
625

AhnLab V3 Security
Adware/Win32.SwiftBrowse
2014.11.08

Avira AntiVirus
ADWARE/BrowseFox.Gen7
7.11.183.160

avast!
Win32:Adware-BYZ [PUP]
2014.9-150521

AVG
Generic
2016.0.3103

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.15521

Bitdefender
Adware.SwiftBrowse.Y
1.0.20.705

Clam AntiVirus
Win.Adware.Agent-22685
0.98/21411

Dr.Web
Trojan.BPlug.281
9.0.1.0141

Emsisoft Anti-Malware
Adware.SwiftBrowse.Y
8.15.05.21.03

ESET NOD32
Win32/BrowseFox
9.10685

F-Prot
W32/A-1c37adca
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.Y
11.2015-21-05_5

G Data
Adware.SwiftBrowse
15.5.24

Kaspersky
not-a-virus:AdWare.Win32.Yotoon
14.0.0.2009

MicroWorld eScan
Adware.SwiftBrowse.Y
16.0.0.423

NANO AntiVirus
Riskware.Win32.Kranet.dgiwfc
0.28.6.62995

nProtect
Adware.SwiftBrowse.Y
14.11.06.01

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

Reason Heuristics
PUP.Yontoo.ScanTack
15.5.20.23

Sophos
Generic PUA BN
4.98

Vba32 AntiVirus
AdWare.Kranet
3.12.26.3

VIPRE Antivirus
Yontoo
34586

Zillya! Antivirus
Adware.Kranet.Win32.476
2.0.0.1976

File size:
120.8 KB (123,680 bytes)

Product version:
1.0.5421.15868

Language:
English (United States)

Common path:
C:\ProgramData\6868b380-de26-428c-8695-32ebd47bfa1b\maintainer.bak

Digital Signature
Signed by:
Scan Tack

Authority:
VeriSign, Inc.

Valid from:
1/21/2014 4:00:00 PM

Valid to:
1/22/2015 3:59:59 PM

Subject:
CN=Scan Tack, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Scan Tack, 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:
44D91A3142283CE62B23F23C84838B0D

File PE Metadata
Compilation timestamp:
11/4/2014 8:49:05 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
1536:33eRgxyOpGX5sfnC6P2dV59IikYYf9J892bbY+mpbcQ/Wm1sWjcdEPQI0ypxCO8K:HK35/9oxfTk+Ovn6EPQI0ypxCO3XbZv

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:
6.1799

Code size:
68.5 KB (70,144 bytes)

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