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officeinstaller.exe

Download Manager

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 officeinstaller.exe by Download Manager 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 www.download-free.com.
Publisher:
Download Manager  (signed and verified)

MD5:
808aa02cb8d740f4f17cdca8e296de13

SHA-1:
69757c957a2971d781bedd7aec2072625a5c0661

SHA-256:
253dc51cda5252cbd9383de82a6cbe231a6209f77452c6a59b170e6e78af47c8

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:
4/26/2024 11:01:58 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.DownloadManager.Bundler (M)
15.12.29.11

File size:
285.2 KB (292,024 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Language:
Language Neutral

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

Digital Signature
Signed by:
Download Manager

Authority:
The USERTRUST Network

Valid from:
5/26/2011 7:00:00 PM

Valid to:
5/26/2012 6:59:59 PM

Subject:
CN=Download Manager, O=Download Manager, STREET=26 York Street, L=London, S=Westminster, PostalCode=W1U 6PZ, C=GB

Issuer:
CN=UTN-USERFirst-Object, OU=http://www.usertrust.com, O=The USERTRUST Network, L=Salt Lake City, S=UT, C=US

Serial number:
7A29EA7E77DAC7B65FC20ECCCB2D8A3C

File PE Metadata
Compilation timestamp:
12/5/2009 4:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:hJSG/Zcb+oYCCnH1ySbnBdiKs/NB/9gfz/g7SMIIHVL/PL+oIwpN2Dk:bvZo+oYCCnVln7iKsPGL/aMKBnL+N+gI

Entry address:
0x627C0

Entry point:
60, BE, 00, E0, 45, 00, 8D, BE, 00, 30, FA, 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:
7.9834

Packer / compiler:
UPX 2.90LZMA

Code size:
20 KB (20,480 bytes)

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

https://www.download-free.com/download.php?p=office&source=ga

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