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Dropbox.exe

Dropbox

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 Dropbox.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. With this installer, users are expecting to download Dropbox but before that occurs they may be presented with additional offers, mostly potentially unwanted software or adware.
Publisher:
Download Assistant  (signed and verified)

Product:
Dropbox

Version:
3.0.0.60

MD5:
1f5679049c4af9888db25cd79f50d446

SHA-1:
b8e500a8169af73a2d56e754d66aeef643e1398c

SHA-256:
397a857d64979fccac08b064aa3fb452d9c23a850c11540b648fa7045d078b43

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:
11/5/2024 10:59:07 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.Download.Bundler (M)
16.4.16.10

File size:
783.5 KB (802,264 bytes)

Product version:
3.0.0.60

Copyright:
(c) Download Assistant

Original file name:
Dropbox.exe

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Language:
English (United States)

Common path:
C:\users\{user}\downloads.exe

Digital Signature
Signed by:
Download Assistant

Authority:
VeriSign, Inc.

Valid from:
8/12/2014 8:00:00 PM

Valid to:
8/12/2016 7:59:59 PM

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

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:
6BC405E8AC962C676F54816BCC4D4311

File PE Metadata
Compilation timestamp:
12/10/2014 5:55:13 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:clr21xKpH69CnyeufYUKGD35mU80ZFlTC8uqzeseFF2wBM2Ap44lkz6kmoyUxywi:cp2syeufYUbVhZnJGFk44SzlBywPi

Entry address:
0x4CC9F

Entry point:
E8, 4E, 1A, 01, 00, E9, 89, FE, FF, FF, CC, CC, CC, CC, CC, CC, CC, 8B, 54, 24, 0C, 8B, 4C, 24, 04, 85, D2, 74, 69, 33, C0, 8A, 44, 24, 08, 84, C0, 75, 16, 81, FA, 80, 00, 00, 00, 72, 0E, 83, 3D, 00, 4F, 4A, 00, 00, 74, 05, E9, B1, 1A, 01, 00, 57, 8B, F9, 83, FA, 04, 72, 31, F7, D9, 83, E1, 03, 74, 0C, 2B, D1, 88, 07, 83, C7, 01, 83, E9, 01, 75, F6, 8B, C8, C1, E0, 08, 03, C1, 8B, C8, C1, E0, 10, 03, C1, 8B, CA, 83, E2, 03, C1, E9, 02, 74, 06, F3, AB, 85, D2, 74, 0A, 88, 07, 83, C7, 01, 83, EA, 01, 75, F6...
 
[+]

Entropy:
7.1235

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

http://www.downloadwizard.com/download_dropbox_ca.php

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