stub.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 stub.exe by Conduit has been detected as a potentially unwanted program by 5 anti-malware scanners. The program is a setup application that uses the Conduit Setup Manager installer. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from toolbarstubdownload.conduit-services.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:
5.7.4.3

MD5:
d21b80bbf2eacdd730e53f05790876f2

SHA-1:
64b1f5eddc07d832a00c1ffaeb0e31bdeb351990

SHA-256:
525c1f4d9c72ad5c9f1646a813c38127cfad4d2fff256aaf8061a0fa06dfb826

Scanner detections:
5 / 68

Status:
Potentially unwanted

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

Description:
This 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
11/27/2024 2:46:30 AM UTC  (today)

Scan engine
Detection
Engine version

Boost by Reason
Adware.Conduit.E
2013.8.29.0

Dr.Web
Adware.Conduit.3
9.0.1.0330

herdProtect (fuzzy)
2013.12.20.16

Reason Heuristics
PUP.Conduit.E
14.8.7.22

VIPRE Antivirus
Conduit
22590

File size:
87.2 KB (89,296 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\temp\{random}.tmp\stub.exe

Digital Signature
Signed by:

Authority:
VeriSign, Inc.

Valid from:
1/2/2013 4:00:00 PM

Valid to:
4/3/2016 4:59:59 PM

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

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:
3A82654719D8F75B59134F7B66465210

File PE Metadata
Compilation timestamp:
2/24/2012 11:20:04 AM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
1536:zGarUa6LowvuhdNYh2Gf9rg6hzGPnvCw1smS5Zj5svPRSEvrGpwGgRhm:p5BuYAVrgUCPnvCnmgZW5SEvrGmZR8

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:
7.2096

Packer / compiler:
Nullsoft install system v2.x

Code size:
29 KB (29,696 bytes)

The file stub.exe has been seen being distributed by the following 7 URLs.

http://toolbarstubdownload.conduit-services.com/.../ToolbarStubDownload?TestGroupID=73&ctid=ct3309350&ministubversion=6.0.2.0

http://toolbarstubdownload.conduit-services.com/.../ToolbarStubDownload?TestGroupID=14&ctid=ct3309350&ministubversion=6.0.2.0

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

TCP (HTTP):

 
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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