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microsoft office.exe

Microsoft Office

Air Software

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 microsoft office.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. The file has been seen being downloaded from dl.yesdownloads.com.
Publisher:
AirInstaller Inc.  (signed by Air Software)

Product:
Microsoft Office

Version:
2.0.3.97

MD5:
536ede4cc912bf8511a2dc94a88b9d44

SHA-1:
a476b80264233096f9d49a9494d6c90584ac6494

SHA-256:
81d75c4cb4632727d9cc40ba91caa053034eefb50f175bf714aec3bf832d53ea

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:
12/29/2024 6:32:26 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.AirSoftw.Bundler (M)
16.5.18.17

File size:
1.1 MB (1,122,216 bytes)

Product version:
2.0.3.97

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\microsoft office.exe

Digital Signature
Signed by:
Air Software

Authority:
VeriSign, Inc.

Valid from:
1/25/2013 12:00:00 AM

Valid to:
3/26/2015 11:59:59 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:
6/3/2013 6:29:48 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
24576:dW5kj54aLFzomWcGqes6KJUseRgy8U+vO8hissocFvz40rWCoXv:dIkd4UFz8cGG63Jg0WO8osZkcCU

Entry address:
0x2536B0

Entry point:
60, BE, 00, 60, 54, 00, 8D, BE, 00, B0, EB, 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:
7.7639

Packer / compiler:
UPX 2.90LZMA

Code size:
1.1 MB (1,105,920 bytes)

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

http://dl.yesdownloads.com/.../Microsoft Office.exe

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