boxrock.dll

Box Rock

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module boxrock.dll by Box Rock has been detected as adware by 31 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. The file has been seen being downloaded from install-cdn.boxrock.info and multiple other hosts.
Publisher:
Box Rock  (signed and verified)

Product:
Box Rock

Version:
1.0.0.7

MD5:
eb85b64b84a5642e7f8424b76d1e1252

SHA-1:
001e90ccf1cd470a06a95f58805593fea74e0171

SHA-256:
7e667ac8da6dbb24a996ee5fad391e48198797e94b3d3e9d4e9091c49af10e73

Scanner detections:
31 / 68

Status:
Adware

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

Analysis date:
12/26/2024 5:28:29 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.AT
6406276

Agnitum Outpost
Riskware.Agent
7.1.1

Avira AntiVirus
ADWARE/BrowseFox.Gen2
7.11.200.114

avast!
Win32:BrowseFox-EZ [PUP]
150101-1

AVG
Adware BrowseFox.F
2016.0.3201

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.15211

Bitdefender
Adware.BrowseFox.AT
1.0.20.210

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Browsefox-226
0.98/19967

Comodo Security
Application.Win32.BrowseFox.JM
20657

Dr.Web
Trojan.Yontoo.1016
9.0.1.05190

Emsisoft Anti-Malware
Adware.BrowseFox.AT
9.0.0.4799

ESET NOD32
Win32/BrowseFox.AE potentially unwanted application
7.0.302.0

Fortinet FortiGate
Riskware/BrowseFox
4/2/2015

F-Prot
W32/S-f64f6ec1
v6.4.7.1.166

F-Secure
Adware.BrowseFox.AT
5.13.68

G Data
Adware.BrowseFox.AT
15.2.24

IKARUS anti.virus
AdWare.BrowseFox
t3scan.1.8.6.0

K7 AntiVirus
Trojan
13.190.14599

Malwarebytes
PUP.Optional.BoxRock.A
v2015.02.11.08

McAfee
Artemis!EE4C3DF750D2
5600.6857

MicroWorld eScan
Adware.BrowseFox.AT
16.0.0.126

NANO AntiVirus
Riskware.Win32.SwiftBrowse.dlbdsd
0.30.0.64448

nProtect
Trojan.GenericKD.2066478
15.01.08.01

Qihoo 360 Security
HEUR/QVM30.1.Malware.Gen
1.0.0.1015

Reason Heuristics
Threat.Yontoo.BoxRock
15.4.2.1

Sophos
Generic PUA IJ
4.98

SUPERAntiSpyware
PUP.PePatch/Variant
9961

Vba32 AntiVirus
AdWare.Kranet
3.12.26.3

VIPRE Antivirus
Threat.4150696
37588

Zillya! Antivirus
Backdoor.PePatch.Win32.60642
2.0.0.2044

File size:
262.7 KB (269,032 bytes)

Product version:
1.0.0.7

Copyright:
(c) Box Rock. All rights reserved.

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\temporary internet files\content.ie5\{random}\boxrock.dll

Digital Signature
Signed by:

Authority:
VeriSign, Inc.

Valid from:
10/7/2014 2:00:00 AM

Valid to:
10/3/2015 1:59:59 AM

Subject:
CN=Box Rock, O=Box Rock, 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:
1125198B1C5DF8CC1185255178F1DAFC

File PE Metadata
Compilation timestamp:
2/8/2015 9:29:32 PM

OS version:
6.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:H/i6UU9JriXzSVBQbHHqeRB+Vbm63Av+fkAZZKT5hxCkcEA:H/i6Uy+jSVGnqequj+Zmg7D

Entry address:
0xF515

Entry point:
55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, EA, 7E, 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, A8, 21, 03, 10, E8, 4C, 02, 00, 00, 33, C0, 40, 8B, 75, 0C, 85, F6, 75, 0C, 39, 35, 0C, 77, 03, 10, 0F, 84, E4, 00, 00, 00, 83, 65, FC, 00, 83, FE, 01, 74, 05, 83, FE, 02, 75, 35, 8B, 0D, C4, 93, 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)

The file boxrock.dll has been seen being distributed by the following 2 URLs.

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