btosqf.exe

Krance Development

This adware is a web browser extension that will inject advertising in the browser in the form of unwanted banners and text-links which may link to malware sites and install unwanted software. The application btosqf.exe, “Object Browser exe” by Krance Development has been detected as adware by 19 anti-malware scanners. It runs as a scheduled task under the Windows Task Scheduler named BTOSQF triggered to execute each time a user logs in. It is built using the Crossrider cross-browser extension platform. While the file utilizes the Crossrider framework and delivery services, it is not owned by Crossrider. It is distributed as part of the Brightcircle group of browser-extensions.
Publisher:
Object Browser  (signed by Krance Development)

Product:
Object Browser

Description:
Object Browser exe

Version:
1000.1000.1000.1000

MD5:
f7a3f7bb74cfbdd0d2efa356d14ba628

SHA-1:
2dd12bc6310e3bdc03dfeb56c7c1dceac1be268a

SHA-256:
2aa6f8f26cadfe2b52fb0ddb44d368d7ffad6be88aaf23844b956cc5bd888473

Scanner detections:
19 / 68

Status:
Adware

Explanation:
May modify the web browser's settings including changing the homepage and search provider in addition to delivering ads (by injecting banner and text-links directly in the webpage). Distributed through the Brightcircle investments brand.

Analysis date:
4/18/2024 7:24:22 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Adware.Plush.1
850

AhnLab V3 Security
PUP/Win32.CrossRider
2014.10.06

Avira AntiVirus
Adware/CrossRider.gr
7.11.176.202

AVG
Generic
2015.0.3329

Bitdefender
Gen:Variant.Adware.Plush.1
1.0.20.1405

Emsisoft Anti-Malware
Gen:Variant.Adware.Plush
8.14.10.08.12

ESET NOD32
Win32/Toolbar.CrossRider.AV (variant)
8.10518

F-Secure
Gen:Variant.Adware.Plush.1
11.2014-08-10_4

G Data
Gen:Variant.Adware.Plush
14.10.24

IKARUS anti.virus
not-a-virus:WebToolbar.CrossRider
t3scan.1.7.8.0

Kaspersky
not-a-virus:WebToolbar.Win32.CrossRider
14.0.0.3135

Malwarebytes
PUP.Optional.ObjectBrowser.A
v2014.10.06.03

McAfee
Artemis!A40CDD718132
5600.6984

MicroWorld eScan
Gen:Variant.Adware.Plush.1
15.0.0.843

Panda Antivirus
Trj/Genetic.gen
14.10.06.03

Qihoo 360 Security
Win32/Virus.Adware.0f5
1.0.0.1015

Reason Heuristics
Threat.Win.Reputation.IMP
14.10.8.0

Sophos
Generic PUA DA
4.98

VIPRE Antivirus
Crossrider
33702

File size:
1.9 MB (1,994,656 bytes)

Product version:
1000.1000.1000.1000

Copyright:
Copyright 2011

Original file name:
Object Browser.exe

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\roaming\btosqf.exe

Digital Signature
Authority:
COMODO CA Limited

Valid from:
8/27/2014 8:00:00 PM

Valid to:
8/28/2015 7:59:59 PM

Subject:
CN=Krance Development, O=Krance Development, STREET=Athinodorou 3, STREET=Dasoupoli Strovolos, L=Nicosia, S=Cyprus, PostalCode=2025, C=CY

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
2F8A4746EB05936853BC17805C72D300

File PE Metadata
Compilation timestamp:
10/5/2014 3:35:55 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
49152:73zoBUo4nKW31vwGe6ppSXqTOUzn+nPRxb:Ho74KgvwGIR

Entry address:
0xF1C31

Entry point:
E8, CF, FF, 00, 00, E9, 7F, FE, FF, FF, 55, 8B, EC, 56, 8B, 75, 08, 85, F6, 78, 09, E8, 02, 01, 01, 00, 3B, 30, 7C, 07, E8, F9, 00, 01, 00, 8B, 30, E8, EC, 00, 01, 00, 8B, 04, B0, 5E, 5D, C3, 55, 8B, EC, 56, E8, F3, 5E, 00, 00, 8B, F0, 85, F6, 75, 07, B8, A0, 80, 55, 00, EB, 26, 53, 57, 33, FF, BB, 86, 00, 00, 00, 39, 7E, 24, 75, 1B, 6A, 01, 53, E8, 0D, 31, 00, 00, 59, 59, 89, 46, 24, 85, C0, 75, 0A, B8, A0, 80, 55, 00, 5F, 5B, 5E, 5D, C3, FF, 75, 08, 8B, 76, 24, E8, 90, FF, FF, FF, 50, 53, 56, E8, 66, ED...
 
[+]

Entropy:
6.8612

Code size:
1.1 MB (1,162,752 bytes)

Scheduled Task
Task name:
BTOSQF

Trigger:
Logon (Runs on logon)

Action:
btosqf.exe \infocmdline=tslw9qmdl0\xfc6dvzlb43u2cqjytasufpqgh


The executing file has been seen to make the following network communication in live environments.

TCP (HTTP):
Connects to ip-50-63-202-33.ip.secureserver.net  (50.63.202.33:80)

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