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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 15 anti-malware scanners. The program is a setup application that uses the AirInstaller Download Manager installer. This program installs potentially unwanted software on your PC at the same time as the software you are trying to install, without adequate consent. The installer is marketed through download protals and search ads as Dropbox but will also install additional software offers which include adware, PUPs and browser toolbars.
Publisher:
Download Assistant  (signed and verified)

Product:
Dropbox

Version:
3.0.0.60

MD5:
b3e70b38ae706c2c7ca05b4488fb55bb

SHA-1:
fdea210cdb4d0f4f854d0ba67eeda760d9362e9b

SHA-256:
2a56b26ab357e1f5d33f9bfeff95b11a6f55fc51ba7243db74bd26ecba99a7ab

Scanner detections:
15 / 68

Status:
Adware

Explanation:
Bundles additional software, mostly toolbars and other potentially unwanted applications using the Vittalia monitization installer.

Description:
This is an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
4/26/2024 10:35:54 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Application.Bundler.32
6355948

AVG
Generic
2016.0.3242

Bitdefender
Gen:Variant.Application.Bundler.32
1.0.20.10

Dr.Web
Trojan.Vittalia.7
9.0.1.05190

Emsisoft Anti-Malware
Gen:Variant.Application.Bundler.32
9.0.0.4799

ESET NOD32
Win32/DownloadAssistant.A potentially unwanted application
7.0.302.0

F-Secure
Riskware.Gen:Variant.Application.Bundler
5.13.68

G Data
Gen:Variant.Application.Bundler.32
15.1.24

Malwarebytes
PUP.Optional.DownloadAssistant
v2015.01.02.09

MicroWorld eScan
Gen:Variant.Application.Bundler.32
16.0.0.6

NANO AntiVirus
Trojan.Win32.Vittalia.dljetu
0.30.0.64448

Norman
Gen:Variant.Application.Bundler.32
29.12.2014 07:19:03

Qihoo 360 Security
Malware.QVM10.Gen
1.0.0.1015

Reason Heuristics
PUP.DownloadAssistant.H
15.1.2.9

VIPRE Antivirus
Threat.4782985
35418

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:
8/13/2014 1:00:00 AM

Valid to:
8/13/2016 12:59:59 AM

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 10:55:13 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:1lr21xKpH69CnyeufYUKGD35mU80ZFlTC8uqzeseFF2wBM2Ap44lHz6kmoyUxywb:1p2syeufYUbVhZnJGFk449zlBywPb

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:
7.1236

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

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

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