update.exe

Adobe Flashplayer

Air Software

Warning, this is not the legitimate setup program for Adobe Flashplayer. The setup is bootstrapped by the Air Installer 'download manager' (a pay-per-install monetization download manager) that bundles unwanted software (adware, toolbars, extensions) during setup while deciving the user into thinking they are downloading the stadard installation setup from Adobe Flashplayer. The application update.exe by Air Software 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.
Publisher:
AirInstaller Inc.  (signed by Air Software)

Product:
Adobe Flashplayer

Version:
2.0.3.79

MD5:
788c93c8db573bf5fb20c1c297428d76

SHA-1:
98dbe3b799c6f28af21eed0930be984bde0d2bff

SHA-256:
32d5b0a339a9d97d4015d197e319574096e71b2a8595be0798ae8b199122bfa9

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:
4/19/2024 3:22:35 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.AirSoftw.Bundler (M)
16.5.22.8

File size:
1.1 MB (1,109,128 bytes)

Product version:
2.0.3.79

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\update.exe

Digital Signature
Signed by:

Authority:
VeriSign, Inc.

Valid from:
1/24/2013 7:00:00 PM

Valid to:
3/26/2015 7:59:59 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:
3AC786E09219DF82DA830E461D4FC39F

File PE Metadata
Compilation timestamp:
4/8/2013 6:33:52 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
24576:wujG7hh/SjrFl0vISZHi/QSi96f+/Mu746Ut18vT2lfpyJ76:wEGNh/SjhagSFi/QSE6ZuhUt188Z

Entry address:
0x249C50

Entry point:
60, BE, 00, 00, 54, 00, 8D, BE, 00, 10, EC, FF, 57, 83, CD, FF, EB, 10, 90, 90, 90, 90, 90, 90, 8A, 06, 46, 88, 07, 47, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 72, ED, B8, 01, 00, 00, 00, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, 01, DB, 73, EF, 75, 09, 8B, 1E, 83, EE, FC, 11, DB, 73, E4, 31, C9, 83, E8, 03, 72, 0D, C1, E0, 08, 8A, 06, 46, 83, F0, FF, 74, 74, 89, C5, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C9, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C9, 75, 20, 41, 01, DB, 75...
 
[+]

Entropy:
7.7616

Packer / compiler:
UPX 2.90LZMA

Code size:
1 MB (1,089,536 bytes)

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

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