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maintainer.bak

Surftastic

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file maintainer.bak by Surftastic has been detected as adware by 23 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:
Surftastic  (signed and verified)

Version:
1.0.5567.22206

MD5:
18c4c7c2444f745ae30b702aec22fecb

SHA-1:
307f8d997e0e12f425a636bbd2e0d3de039cb522

SHA-256:
78f0ffe3084e51b2e1d87c94c4e99ada71fb2531a730c4851e58fbb042c1df90

Scanner detections:
23 / 68

Status:
Adware

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

Analysis date:
4/25/2024 10:02:18 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.BN
6294574

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.BrowseFox
2015.03.31

Avira AntiVirus
ADWARE/BrowseFox.Gen7
3.6.1.96

avast!
Win32:BrowseFox-IF [PUP]
150319-1

AVG
Adware AdPlugin.CWT
2014.0.4311

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.15330

Bitdefender
Adware.BrowseFox.BN
1.0.20.445

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Agent-41785
0.98/21511

Dr.Web
Trojan.Yontoo.1734
9.0.1.05190

Emsisoft Anti-Malware
Adware.BrowseFox.BN
9.0.0.4799

ESET NOD32
Win32/BrowseFox.V potentially unwanted application
7.0.302.0

F-Prot
W32/S-11fc74d1
v6.4.7.1.166

F-Secure
Adware.BrowseFox.BN
11.2015-30-03_2

G Data
Adware.BrowseFox.BN
15.3.25

herdProtect (fuzzy)
variant of maintainer.exe (Adware)
2015.7.4.20

MicroWorld eScan
Adware.BrowseFox.BN
16.0.0.267

NANO AntiVirus
Trojan.Win32.Yontoo.dpmcsm
0.30.8.659

Norman
Gen:Variant.Adware.Graftor.163020
03.12.2014 13:20:04

nProtect
Adware.BrowseFox.BN
15.03.30.01

Reason Heuristics
PUP.Yontoo
15.3.30.22

VIPRE Antivirus
Threat.4741131
38552

File size:
125.2 KB (128,240 bytes)

Product version:
1.0.5567.22206

Common path:
C:\ProgramData\application data\f7d523a7-723b-4679-8c70-0e90e3053cba\maintainer.bak

Digital Signature
Signed by:
Surftastic

Authority:
VeriSign, Inc.

Valid from:
12/23/2014 8:00:00 AM

Valid to:
1/23/2016 7:59:59 AM

Subject:
CN=Surftastic, O=Surftastic, 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:
5075CED200701322868158A770FEC231

File PE Metadata
Compilation timestamp:
3/31/2015 3:20:18 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:RD1Ll2ZpujSiZF4gBsym2UG0IHhxDOSdVs/D4:RBVDFHkKuSfsc

Entry address:
0x9872

Entry point:
E8, 75, 62, 00, 00, E9, 7F, FE, FF, FF, 55, 8B, EC, 81, EC, 28, 03, 00, 00, A1, 68, C2, 41, 00, 33, C5, 89, 45, FC, 83, 7D, 08, FF, 57, 74, 09, FF, 75, 08, E8, 59, 50, 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:
6.2059

Code size:
72.5 KB (74,240 bytes)

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