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ytdsetup.exe

Youtube Downloader

Download Assistant

This is part of the Air Installer, a download manager which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. The application ytdsetup.exe by Download Assistant has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the AirInstaller Download Manager installer. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from download.youtubedownloads.net.
Publisher:
Download Assistant  (signed and verified)

Product:
Youtube Downloader

Version:
3.0.0.136

MD5:
aceb3c6fe672f363e3bda6322945f0b0

SHA-1:
edf77f2b59ddbdfc95269acd4e624ecdd1257c0c

SHA-256:
c74cd8992953256520b63f1766a725fcdb0d35b353e989937fbf5e69900d47d2

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

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:
5/19/2025 11:46:13 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.DownloadAssistant.Bundler (M)
16.1.20.0

File size:
2.1 MB (2,233,720 bytes)

Product version:
3.0.0.136

Copyright:
(c) Download Assistant

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Language:
Language Neutral

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

Digital Signature
Signed by:
Download Assistant

Authority:
Symantec Corporation

Valid from:
12/2/2015 12:00:00 AM

Valid to:
3/2/2017 11:59:59 PM

Subject:
CN=Download Assistant, O=Download Assistant, L=Victoria, S=British Columbia, C=CA

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
04A6D3440F1D06EE9CA4CE2B30C76606

File PE Metadata
Compilation timestamp:
1/30/2013 2:21:56 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
49152:N9xh7lRtmTOv6NSoy0ZlOMfcTjLgQ10+gZCT:J1tIM6w0ZoM0TjkQ10+iq

Entry address:
0x113BC

Entry point:
55, 8B, EC, 83, C4, A4, 53, 56, 57, 33, C0, 89, 45, C4, 89, 45, C0, 89, 45, A4, 89, 45, D0, 89, 45, C8, 89, 45, CC, 89, 45, D4, 89, 45, D8, 89, 45, EC, B8, 2C, 00, 41, 00, E8, E8, 51, FF, FF, 33, C0, 55, 68, 9E, 1A, 41, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 5A, 1A, 41, 00, 64, FF, 32, 64, 89, 22, A1, 48, 5B, 41, 00, E8, 16, D8, FF, FF, E8, 65, D3, FF, FF, 80, 3D, DC, 2A, 41, 00, 00, 74, 0C, E8, 2B, D9, FF, FF, 33, C0, E8, 80, 32, FF, FF, 8D, 55, EC, 33, C0, E8, E2, A3, FF, FF, 8B, 55, EC, B8, 50, 86...
 
[+]

Entropy:
5.7428

Developed / compiled with:
Microsoft Visual C++

Code size:
65.5 KB (67,072 bytes)

The file ytdsetup.exe has been seen being distributed by the following URL.

http://download.youtubedownloads.net/v2/click/jsttxfb6/?d=http://.../files/YTDSetup.exe&key=d3d9e28ce9b44e37385af0685f16e985eca9d2da1f18d9c51a7c24465900d350&sid=youtubedownloader&uid=&affiliate_image=http://.../images/logo-installer.png&product_image=http://.../images/image-installer.png&icon=http://.../favicon.ico&n=Youtube Downloader&filename=YTDSetup

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