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checktbexist.exe

Conduit Ltd.

The file belongs to the Conduit API platform, a utility that bundles and monetizes search toolbars and web browser extensions. The application checktbexist.exe by Conduit has been detected as a potentially unwanted program by 4 anti-malware scanners. The program is a setup application that uses the Conduit Setup Manager installer. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from storage.conduit.com and multiple other hosts. While running, it connects to the Internet address cms.distributionengine.conduit-services.com on port 80 using the HTTP protocol.
Publisher:
Conduit  (signed by Conduit Ltd.)

Version:
2.1.0.2

MD5:
9dff6200a6d81462938e5a5400d7f954

SHA-1:
2a2fd5b25e29ceab0d0dcd079ab97b50e87c27da

SHA-256:
05c957ff126bacc32c3531db9a4ad6736c463f1d08e9dcd243bdef8da860f163

Scanner detections:
4 / 68

Status:
Potentially unwanted

Explanation:
Bundles the Conduit Toolbar and/or Conduit Search Protect.

Description:
This is an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
12/24/2024 12:55:54 PM UTC  (today)

Scan engine
Detection
Engine version

herdProtect (fuzzy)
variant of statisticsstub.exe (Adware)
2013.12.20.19

Malwarebytes
PUP.Optional.Conduit.A
v2013.12.07.09

Reason Heuristics
PUP.Conduit.M
14.8.7.22

VIPRE Antivirus
Conduit
24120

File size:
76.7 KB (78,512 bytes)

Copyright:
Conduit Ltd.

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Conduit Setup Manager (using Nullsoft Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\checktbexist.exe

Digital Signature
Signed by:
Conduit Ltd.

Authority:
VeriSign, Inc.

Valid from:
2/16/2010 7:00:00 PM

Valid to:
3/29/2013 7:59:59 PM

Subject:
CN=Conduit Ltd., OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Conduit Ltd., S=Israel, C=IL

Issuer:
CN=VeriSign Class 3 Code Signing 2009-2 CA, OU=Terms of use at https://www.verisign.com/rpa (c)09, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
3736DA15AF647632CCE61CD41B6577DD

File PE Metadata
Compilation timestamp:
2/24/2012 2:20:04 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
1536:EGarUa6LowvuhdNYh2Gf9rg6hzGPnbCw19iX/6UZj5svPRSEvrGgCg/j:G5BuYAVrgUCPnbC/yUZW5SEvrGKj

Entry address:
0x38AF

Entry point:
81, EC, D4, 02, 00, 00, 53, 55, 56, 57, 6A, 20, 33, ED, 5E, 89, 6C, 24, 18, C7, 44, 24, 10, 68, A2, 40, 00, 89, 6C, 24, 14, FF, 15, 30, 90, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 90, 40, 00, 55, FF, 15, C0, 92, 40, 00, 6A, 08, A3, 98, EB, 47, 00, E8, 36, 2A, 00, 00, 55, 68, B4, 02, 00, 00, A3, B0, EA, 47, 00, 8D, 44, 24, 38, 50, 55, 68, 64, A2, 40, 00, FF, 15, 84, 91, 40, 00, 68, 4C, A2, 40, 00, 68, A0, 6A, 47, 00, E8, 18, 27, 00, 00, FF, 15, B0, 90, 40, 00, 50, BF, A0, F0, 4C, 00, 57, E8, 06, 27, 00, 00...
 
[+]

Entropy:
7.0447

Packer / compiler:
Nullsoft install system v2.x

Code size:
29 KB (29,696 bytes)

The file checktbexist.exe has been seen being distributed by the following 2 URLs.

http://storage.conduit.com/ps/.../checktbexist.exe

http://dist.divx.com/divx/offer/.../checktbexist.exe

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

TCP (HTTP):
Connects to offering.service.distributionengine.conduit-services.com  (199.101.114.147:80)

 
http://offering.service.distributionengine.conduit-services.com/DecisionEngine.ashx

TCP (HTTP):
Connects to cms.distributionengine.conduit-services.com  (54.243.251.51:80)

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