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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 6 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.
Publisher:
Conduit  (signed by Conduit Ltd.)

Version:
1.3.0.2

MD5:
83be9e0a3599148fe5095430b269dd2d

SHA-1:
72490de574849be1c39bd98ea1e24b5e78697de7

SHA-256:
e097dc5c34b9f626af3331e1d16213c856d8c9d26e169c54520fd307e2ce2c38

Scanner detections:
6 / 68

Status:
Potentially unwanted

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

Description:
This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
11/27/2024 12:53:55 AM UTC  (today)

Scan engine
Detection
Engine version

Dr.Web
Adware.Conduit.8
9.0.1.0359

Malwarebytes
PUP.Optional.Conduit.A
v2013.12.25.08

Panda Antivirus
Adware/Conduit
14.01.20.06

Reason Heuristics
PUP.Conduit.H
14.8.7.22

Trend Micro House Call
TROJ_GEN.F47V1120
7.2.359

VIPRE Antivirus
Conduit
25508

File size:
254.3 KB (260,416 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 1:00:00 AM

Valid to:
4/4/2016 1:59:59 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 4:31:20 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
6144:9zZZCzOv1Sj6J2GNEcJS527nmuFbNGH5gpl0Z4KGpzrcArjh:9zZIiUjbIJSruFMglpzHjh

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...
 
[+]

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 50 URLs.

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=17&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=33&ctid=ct3326947

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=57&ctid=ct3316263

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=8&ctid=ct3316263

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=98&ctid=ct3319214

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=91&ctid=ct3319214

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=56&ctid=ct3326474

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=64&ctid=ct3319214

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=87&ctid=ct3319214

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=49&ctid=ct3325498

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=57&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=89&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=26&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=83&ctid=ct3319214

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=61&ctid=ct3319214

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=24&ctid=ct3323315

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=9&ctid=ct3323245

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=35&ctid=ct3323315

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=77&ctid=ct3321825

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=13&ctid=ct3326947

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=26&ctid=ct3316263

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=66&ctid=ct3319214

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=5&ctid=ct3319214

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=81&ctid=ct3319214

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=96&ctid=ct3325491

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=69&ctid=ct3326947

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=65&ctid=ct3326947

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=35&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.2.0.3&TestGroupID=58&ctid=ct3317212

http://mamstubdownload.conduit-services.com/.../ToolbarStubDownload?ministubversion=2.1.0.1&TestGroupID=13&ctid=ct3319214

Latest 30 of 190 download URLs

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

TCP (HTTP):
Connects to ec2-54-225-209-34.compute-1.amazonaws.com  (54.225.209.34:80)

TCP (HTTP):
Connects to ec2-107-22-164-137.compute-1.amazonaws.com  (107.22.164.137:80)

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