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netcrawlbho.dll

TopicTron

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module netcrawlbho.dll by TopicTron has been detected as adware by 32 anti-malware scanners. It is installed within the context of Internet Explore as a BHO (Browser Helper Object) under the name ‘NetCrawl’. 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:
NetCrawl  (signed by TopicTron)

Product:
NetCrawl

Version:
1.0.0.3

MD5:
43044b878dc2ebd8e565798e495f624d

SHA-1:
4fdc3bc0fa1873ce608d55062b7fad89c25f05af

SHA-256:
9515a10b546f7c4e3c7f5b49592873dafe97e0e08f2cfdde87e73f34ebebd286

Scanner detections:
32 / 68

Status:
Adware

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

Analysis date:
4/25/2024 9:12:56 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Adware.BHO.Agent.4
801

Agnitum Outpost
PUA.Agent
7.1.1

AhnLab V3 Security
Adware/Win32.Agent
2014.11.27

Avira AntiVirus
APPL/BrowseFox.Gen2
7.11.166.4

AVG
Adware BrowseFox.F
2014.0.4189

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.141126

Bitdefender
Gen:Variant.Adware.BHO.Agent.4
1.0.20.1650

Clam AntiVirus
Win.Adware.Agent-7675
0.98/21411

Comodo Security
Application.Win32.Altbrowse.AK
19119

Dr.Web
Trojan.BPlug.144
9.0.1.05190

Emsisoft Anti-Malware
Gen:Variant.Adware.BHO.Agent
8.14.11.26.06

ESET NOD32
Win32/BrowseFox.O potentially unwanted application
7.0.302.0

Fortinet FortiGate
Adware/Agent
11/26/2014

F-Prot
W32/BadBHO.AW.gen
v6.4.7.1.166

F-Secure
Gen:Variant.Adware.BHO.Agent.4
11.2014-26-11_4

G Data
Gen:Variant.Adware.BHO.Agent
14.11.24

K7 AntiVirus
Trojan
13.186.14150

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.2889

Malwarebytes
PUP.Optional.Zebar.A
v2014.11.26.06

McAfee
Artemis!CD96DF17AA75
5600.6935

MicroWorld eScan
Gen:Variant.Adware.BHO.Agent.4
15.0.0.990

NANO AntiVirus
Riskware.Win32.Agent.czmzab
0.28.2.61349

nProtect
Trojan-Clicker/W32.Agent.249624.B
14.08.07.01

Panda Antivirus
Trj/CI.A
14.11.26.06

Qihoo 360 Security
HEUR/Malware.QVM30.Gen
1.0.0.1015

Reason Heuristics
PUP.BHO.TopicTron.L
14.11.29.17

Sophos
BrowseSmart
4.98

SUPERAntiSpyware
Adware.BrowseFox/Variant
10214

Trend Micro House Call
Suspicious_GEN.F47V0807
7.2.330

Vba32 AntiVirus
AdWare.SwiftBrowse
3.12.26.3

VIPRE Antivirus
Yontoo
32026

Zillya! Antivirus
Adware.Agent.Win32.9402
2.0.0.1850

File size:
244.3 KB (250,144 bytes)

Product version:
1.0.0.3

Copyright:
(c) NetCrawl. All rights reserved.

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\Program Files\netcrawl\netcrawlbho.dll

Digital Signature
Signed by:
TopicTron

Authority:
VeriSign, Inc.

Valid from:
3/19/2014 1:00:00 AM

Valid to:
3/20/2015 12:59:59 AM

Subject:
CN=TopicTron, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=TopicTron, 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:
525F682B2D8B1E0BB71F3041A3873EB2

File PE Metadata
Compilation timestamp:
11/24/2014 6:32:40 PM

OS version:
6.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:pdJoqBqqKFY3QiKQkpiUFj4limeNeAxjN+rIaIOu1wG/av:pRBPKFY3aQSi2eGUIfGG/av

Entry address:
0x12854

Entry point:
55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, 41, 8D, 00, 00, FF, 75, 10, FF, 75, 0C, FF, 75, 08, E8, 07, 00, 00, 00, 83, C4, 0C, 5D, C2, 0C, 00, 6A, 0C, 68, 70, 30, 03, 10, E8, BD, 01, 00, 00, 33, C0, 40, 8B, 75, 0C, 85, F6, 75, 0C, 39, 35, 04, 78, 03, 10, 0F, 84, E4, 00, 00, 00, 83, 65, FC, 00, 83, FE, 01, 74, 05, 83, FE, 02, 75, 35, 8B, 0D, FC, A4, 02, 10, 85, C9, 74, 0C, FF, 75, 10, 56, FF, 75, 08, FF, D1, 89, 45, E4, 85, C0, 0F, 84, B1, 00, 00, 00, FF, 75, 10, 56, FF, 75, 08, E8, 11, FE, FF, FF, 89, 45, E4...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
159 KB (162,816 bytes)

Internet Explorer BHO
Display name:
NetCrawl

CLSID:
{769a91da-209f-47fe-88b9-b0321b0982c8}


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