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o4f32bds.exe

LibreOffice

Download Assistant

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 o4f32bds.exe by Download Assistant 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. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from chrome.downloadlod.com.
Publisher:
Download Assistant  (signed and verified)

Product:
LibreOffice

Version:
3.0.0.154

MD5:
680cb2b07ccf816e15206522166f41a1

SHA-1:
a73ee5d488973bec14aff48313c58a6a4a926de9

SHA-256:
e58a30f0697259c14ddfc3b490a22effae84b92ff4c1350601da00e6ed593c8d

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:
12/26/2024 1:31:56 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.Download.Bundler (M)
16.5.1.11

File size:
1.1 MB (1,140,992 bytes)

Product version:
3.0.0.154

Copyright:
(c) Download Assistant

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\o4f32bds.exe

Digital Signature
Signed by:
Download Assistant

Authority:
Symantec Corporation

Valid from:
4/14/2016 2:00:00 AM

Valid to:
7/15/2017 1:59:59 AM

Subject:
CN=Download Assistant, O=Download Assistant, L=Victoria, S=British Columbia, C=CA

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
3179370BECD0CB49DB3E6431A0C87799

File PE Metadata
Compilation timestamp:
1/30/2013 3:21:56 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:dxGPkXNKF+bGpxE7tT9iHpJlZPR1xR94RYQnOPwSY4jEJakDFn:2nwig7tT9epJhDS4jEJakD5

Entry address:
0x113BC

Entry point:
55, 8B, EC, 83, C4, A4, 53, 56, 57, 33, C0, 89, 45, C4, 89, 45, C0, 89, 45, A4, 89, 45, D0, 89, 45, C8, 89, 45, CC, 89, 45, D4, 89, 45, D8, 89, 45, EC, B8, 2C, 00, 41, 00, E8, E8, 51, FF, FF, 33, C0, 55, 68, 9E, 1A, 41, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 5A, 1A, 41, 00, 64, FF, 32, 64, 89, 22, A1, 48, 5B, 41, 00, E8, 16, D8, FF, FF, E8, 65, D3, FF, FF, 80, 3D, DC, 2A, 41, 00, 00, 74, 0C, E8, 2B, D9, FF, FF, 33, C0, E8, 80, 32, FF, FF, 8D, 55, EC, 33, C0, E8, E2, A3, FF, FF, 8B, 55, EC, B8, 50, 86...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
65.5 KB (67,072 bytes)

The file o4f32bds.exe has been seen being distributed by the following URL.

http://chrome.downloadlod.com/v2/click/eg9huyf4/?affiliate_image=http://www.downloadlod.com/down/.../images/Libreoffice.png&d=http://server2.downloadlod.com/files/libreoffice.msi&filename=LibreOffice_Setup&key=d90f8e0c21882256de42940be7e289d4425d544bb8fac6b298562257a8fef737&n=LibreOffice&product_image=http://www.downloadlod.com/down/.../images/01.png&sid=lod/.../Libreoffice&uid=&uao=TW96aWxsYS81LjAgKFdpbmRvd3MgTlQgMTAuMDsgV09XNjQpIEFwcGxlV2ViS2l0LzUzNy4zNiAoS0hUTUwsIGxpa2UgR2Vja28pIENocm9tZS81MS4wLjI2ODMuMCBTYWZhcmkvNTM3LjM2&scid=16ae434a-066a-11e6-899a-0401ac007701

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