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grabrezbho.dll

GrabRez

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module grabrezbho.dll by GrabRez has been detected as adware by 34 anti-malware scanners. It is installed within the context of Internet Explore as a BHO (Browser Helper Object) under the name ‘GrabRez’. 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:
GrabRez  (signed and verified)

Product:
GrabRez

Version:
1.0.0.3

MD5:
0374192db7bada128762362916472467

SHA-1:
153e216d77e40d0c00e1db5e58e9e2461336ca6e

SHA-256:
ac6413fbe0e14a19605a5a70b288fcef95ca800d68278bae44e4ea34be081ef8

Scanner detections:
34 / 68

Status:
Adware

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

Analysis date:
4/18/2024 1:01:50 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.Agent.NYV
356

Agnitum Outpost
PUA.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.BrowseFox
2014.09.20

Avira AntiVirus
ADWARE/BrowseFox.Gen2
7.11.173.104

avast!
Win32:BrowseFox-AV [PUP]
2014.9-160214

AVG
Adware BrowseFox.F
2017.0.2834

Baidu Antivirus
Adware.Win32.Agent
4.0.3.16214

Bitdefender
Adware.Agent.NYV
1.0.20.225

Clam AntiVirus
Win.Adware.Agent-7593
0.98/19392

Comodo Security
Application.Win32.Altbrowse.AK
17993

Dr.Web
Trojan.BPlug.28
9.0.1.045

Emsisoft Anti-Malware
Adware.Agent.NYV
8.16.02.14.10

ESET NOD32
Win32/BrowseFox.F potentially unwanted application
10.7.0.302.0

Fortinet FortiGate
Adware/Agent
2/14/2016

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

F-Secure
Adware.Agent.NYV
11.2016-14-02_1

G Data
Adware.Agent.NYV
16.2.24

IKARUS anti.virus
not-a-virus:AdWare.Win32.Agent
t3scan.2.2.29

K7 AntiVirus
Unwanted-Program
13.176.11554

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.663

Malwarebytes
PUP.Optional.GrabRez.A
v2016.02.14.10

McAfee
Artemis!B14B3DF9C47E
5600.6490

MicroWorld eScan
Adware.Agent.NYV
17.0.0.135

NANO AntiVirus
Riskware.Win32.Agent.cuenda
0.28.0.58720

nProtect
Adware.Agent.NYV
14.03.26.01

Panda Antivirus
Trj/CI.A
16.02.14.10

Qihoo 360 Security
HEUR/Malware.QVM30.Gen
1.0.0.1015

Reason Heuristics
Adware.Yontoo.GrabRez (M)
16.2.14.10

Sophos
Generic PUA DG
4.98

SUPERAntiSpyware
Adware.BrowseFox/Variant
9324

Trend Micro House Call
TROJ_GEN.F47V0228
7.2.45

Vba32 AntiVirus
AdWare.Agent
3.12.24.3

VIPRE Antivirus
Adware.Agent
27748

Zillya! Antivirus
Adware.Agent.Win32.9046
2.0.0.1927

File size:
244.3 KB (250,136 bytes)

Product version:
1.0.0.3

Copyright:
(c) GrabRez. All rights reserved.

Original file name:
GrabRezIEClient.dll

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\Program Files\grabrez\grabrezbho.dll

Digital Signature
Signed by:
GrabRez

Authority:
VeriSign, Inc.

Valid from:
11/26/2013 7:00:00 PM

Valid to:
11/27/2014 6:59:59 PM

Subject:
CN=GrabRez, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=GrabRez, 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:
63321F6F4FC45CBD2C4E1616655D18DB

File PE Metadata
Compilation timestamp:
10/20/2014 9:34:50 AM

OS version:
6.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:iJxouBfVfEiKQkpiUFjIliie9eAxjN+/IaIEWYhGfaq3B:iZBfVfGQSiieGYIzkGfaqR

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...
 
[+]

Entropy:
6.3608

Developed / compiled with:
Microsoft Visual C++

Code size:
159 KB (162,816 bytes)

Internet Explorer BHO
Display name:
GrabRez

CLSID:
{e1420d09-acc8-4efd-9965-e7ae3c5b977c}


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