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free_download.exe

Download Manager

Air Software

It uses the Air Installer distribution platform (a pay-per-install monetization download manager) to bundle unwanted software such as adware and browser toolbars during setup. The application free_download.exe by Air Software has been detected as adware by 18 anti-malware scanners. The program is a setup application that uses the AirInstaller Download Manager installer. The file has been seen being downloaded from dl.airdwnlds.com.
Publisher:
AirInstaller Inc.  (signed by Air Software)

Product:
Download Manager

Version:
2.0.3.38

MD5:
03b4592468b7d369ec5ca948b9bf37c0

SHA-1:
ed99f012687f108f5d222860362a9d6235464cd4

SHA-256:
8f06fa67b75eb183a796a41d37c288f305c3cdbb56426ea0429ff96079833f73

Scanner detections:
18 / 68

Status:
Adware

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:
4/24/2024 6:40:14 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.AirAd
7.1.1

Avira AntiVirus
Adware/AirAdInstaller.F
7.11.156.52

avast!
Win32:Adware-CAH [PUP]
2014.9-160213

Bkav FE
W32.HfsAdware
1.3.0.6379

Comodo Security
Application.Win32.AirAdInstaller.B
18645

Dr.Web
Adware.Downware.897
9.0.1.044

ESET NOD32
Win32/AirAdInstaller.A potentially unwanted application
10.7.0.302.0

F-Prot
W32/AirInstall.A.gen
v6.4.6.5.141

G Data
Win32.Adware.Airadinstaller
16.2.24

IKARUS anti.virus
PUA.AirAdInstaller
t3scan.1.8.3.0

K7 AntiVirus
Unwanted-Program
13.198.15087

Malwarebytes
PUP.Optional.AirInstaller
v2016.02.13.10

Panda Antivirus
Adware/AirInstaller
16.02.13.10

Quick Heal
Adware.AirAdInstaller.I5
2.16.14.00

Reason Heuristics
PUP.Air Software.AirSoftware.Bundler (M)
16.2.13.10

Rising Antivirus
PE:PUF.Airinstall!1.9C4C
23.00.65.16211

Sophos
AirInstaller
4.98

VIPRE Antivirus
Threat.4782985
29708

File size:
2.1 MB (2,228,304 bytes)

Product version:
2.0.3.38

Copyright:
(c) AirInstaller. All rights reserved.

Original file name:
AirInstaller.exe

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Language:
English (United States)

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

Digital Signature
Signed by:
Air Software

Authority:
VeriSign, Inc.

Valid from:
2/29/2012 6:00:00 PM

Valid to:
3/1/2013 5:59:59 PM

Subject:
CN=Air Software, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Air Software, 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:
36D5AA8967E82240D5AFEC2F301B54ED

File PE Metadata
Compilation timestamp:
2/6/2013 5:23:25 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
49152:JVmzv9dVjKCKTyvthJ3DUTanI5eUA5MjUS13X9+BvVNoQI5Ouys5prn1ENM8Mond:zmTRETyvthJ3pI5AuUS13XAvVNo14uyl

Entry address:
0x14F722

Entry point:
E8, CF, 93, 00, 00, E9, 89, FE, FF, FF, 3B, 0D, B0, 9D, 5E, 00, 75, 02, F3, C3, E9, 56, 94, 00, 00, 8B, FF, 55, 8B, EC, 8B, 45, 14, 56, 85, C0, 74, 41, 83, 7D, 08, 00, 75, 13, E8, ED, 22, 00, 00, 6A, 16, 5E, 89, 30, E8, C4, 96, 00, 00, 8B, C6, EB, 2A, 83, 7D, 10, 00, 74, E7, 39, 45, 0C, 73, 0E, E8, CF, 22, 00, 00, 6A, 22, 59, 89, 08, 8B, F1, EB, DE, 50, FF, 75, 10, FF, 75, 08, E8, EA, 11, 00, 00, 83, C4, 0C, 33, C0, 5E, 5D, C3, 8B, FF, 55, 8B, EC, 8B, 45, 08, 56, 8B, F1, C6, 46, 0C, 00, 85, C0, 75, 63, E8...
 
[+]

Entropy:
6.4965

Code size:
1.5 MB (1,595,904 bytes)

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

http://dl.airdwnlds.com/get/click/.../?filename=free_download

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