home

mamstub.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 mamstub.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 mamstubdownload.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:
1.1.0.3

MD5:
82beab5f0aa724faef6d463462eb6405

SHA-1:
60938b703d9a8fae6684b26cb6928eeee32c2f3d

SHA-256:
d841d96a8438db05ba9e695a184b1678675fff26835936bf9838cf0620de17c0

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 12:46:21 AM UTC  (today)

Scan engine
Detection
Engine version

Dr.Web
Adware.Conduit.8
9.0.1.0337

Malwarebytes
PUP.Optional.Conduit.A
v2013.12.03.04

Reason Heuristics
PUP.Conduit.H
14.8.7.22

Trend Micro House Call
TROJ_GEN.F47V1110
7.2.337

VIPRE Antivirus
Conduit
23732

File size:
254 KB (260,112 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\mamstub.exe

Digital Signature
Signed by:
Conduit Ltd.

Authority:
VeriSign, Inc.

Valid from:
1/3/2013 3:30:00 AM

Valid to:
4/4/2016 4:29:59 AM

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:
7/6/2011 7:01:20 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
6144:tzZZPc6U1Sj6J2GNEcJS527nmuFbNGH5gpl0Z4KGpzrcArUI:tzZ19jbIJSruFMglpzHUI

Entry address:
0x3415

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, 70, 85, 40, 00, 89, 6C, 24, 14, FF, 15, 30, 80, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 80, 40, 00, 55, FF, 15, B0, 82, 40, 00, 6A, 08, A3, 98, B3, 47, 00, E8, 67, 27, 00, 00, 55, 68, B4, 02, 00, 00, A3, B0, B2, 47, 00, 8D, 44, 24, 38, 50, 55, 68, 6C, 85, 40, 00, FF, 15, 80, 81, 40, 00, 68, 54, 85, 40, 00, 68, A0, 32, 47, 00, E8, 35, 26, 00, 00, FF, 15, B0, 80, 40, 00, 50, BF, A0, C0, 4C, 00, 57, E8, 23, 26, 00, 00...
 
[+]

Entropy:
7.9119

Packer / compiler:
Nullsoft install system v2.x

Code size:
26 KB (26,624 bytes)

The file mamstub.exe has been seen being distributed by the following 28 URLs.

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=79&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=29&ctid=ct3319214

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=64&ctid=ct3316186

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=76&ctid=ct3319608

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=93&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=40&ctid=ct3319608

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=25&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=81&ctid=ct3316263

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=28&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=87&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=32&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=55&ctid=ct3316263

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=71&ctid=ct3316263

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=5&ctid=ct3317991

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=16&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=65&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=34&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=66&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=84&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=33&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=21&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=51&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=75&ctid=ct3316263

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=11&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=7&ctid=ct3316186

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=38&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=80&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=22&ctid=ct3317212

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)

Remove mamstub.exe - Powered by Reason Core Security
herdProtect is a second line of defense malware removal platform powered by 68 anti-malware engines in the cloud. Since no single anti-malware program is perfect 100% of the time, herdProtect utilizes a 'herd' of multiple engines to guarantee the widest coverage and the earliest possible detection.