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browser_update.exe

Google Chrome

Air Software

Warning, this is not the legitimate setup program for Google Chrome. 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 Google Chrome. The application browser_update.exe, “Google Chrome ” 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   (signed by Air Software)

Product:
Google Chrome

Description:
Google Chrome

Version:
2.0.4.52

MD5:
c151c65297058868ff990a6fec56d40f

SHA-1:
56aa49e4f9686ca982e20136acc9c4f648427fa2

SHA-256:
87eb4ece25775511ce0d75d837db0a09e4f51b6a3ce4b26deb4747f1775513df

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 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:
11/27/2024 12:46:57 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software (M)
16.7.26.4

File size:
814.4 KB (833,960 bytes)

Product version:
2.0.4.52

Copyright:
(c) AirInstaller

Original file name:
setup.exe

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Language:
English (United States)

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

Digital Signature
Signed by:
Air Software

Authority:
VeriSign, Inc.

Valid from:
1/24/2013 6:00:00 PM

Valid to:
3/26/2015 6:59:59 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:
10/15/2013 4:33:50 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:4HJ2L2gH1xX7TwfuqR1IXWPpmg45xM4MmFMQr3BMlaPKFgwuoGfEaC5OSmiI8:P9xrTwGqL5mDxT+c3BWg/BEaCzI8

Entry address:
0x25CA20

Entry point:
60, BE, 00, B0, 59, 00, 8D, BE, 00, 60, E6, 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, 0B, 75, 28, 8B, 1E, 83, EE, FC, 11, DB, 72, 1F, 48, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, EB, D4, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C9, EB, 52, 31, C9, 83, E8, 03, 72, 11, C1, E0, 08, 8A, 06, 46, 83, F0, FF, 74, 75, D1, F8, 89...
 
[+]

Entropy:
7.8788

Packer / compiler:
UPX 2.90LZMA

Code size:
776 KB (794,624 bytes)

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

http://files.airdwnlds.com/get/click/.../?filename=Browser_Update

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