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libreoffice_setup.exe

Premium Installer

This adware bundler is distributed through Adknowledge's advertising supported software managers. The application libreoffice_setup.exe by Premium Installer 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 Adknowledge Fusion installer. The file has been seen being downloaded from install2.optimum-installer.com.
Publisher:
ExpressInstaller  (signed by Premium Installer)

Product:
ExpressInstaller

Version:
3, 7, 1, 0

MD5:
9862a254f314c25eadc0682456f7df24

SHA-1:
87e5d61488684bb113979d071235f5e1a6e9f00c

SHA-256:
fbd0b892440eb8588b70d700daddaf564f2c1ba08a6ddaf5d517f0289762a800

Scanner detections:
1 / 68

Status:
Adware

Explanation:
This setup/installer bundles various adware components.

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:
4/23/2024 9:55:09 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Adknowledge.PremiumInstaller.Installer (M)
16.1.24.16

File size:
1.7 MB (1,825,944 bytes)

Product version:
3, 7, 1, 0

Copyright:
Copyright (C) 2013 ExpressInstaller

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Adknowledge Fusion

Language:
English (United States)

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

Digital Signature
Signed by:
Premium Installer

Authority:
VeriSign, Inc.

Valid from:
7/12/2013 9:00:00 PM

Valid to:
8/2/2014 8:59:59 PM

Subject:
CN=Premium Installer, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Premium Installer, L=Wilmington, S=Delaware, C=US

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:
35BB74B905C01CE61DA131BA49337F33

File PE Metadata
Compilation timestamp:
9/24/2013 12:34:04 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
24576:V2ji3PZ7kxYL2Eo3tFBIOpQ9/ot+kX7mSkZsGOAb/Kk9R9EEofiOmP:fAxYL2PtvW9wVLwZs9k9OfiL

Entry address:
0x3B7C

Entry point:
E8, FB, 35, 00, 00, E9, 78, FE, FF, FF, 8B, FF, 55, 8B, EC, 83, EC, 20, 8B, 45, 08, 56, 57, 6A, 08, 59, BE, 5C, B2, 41, 00, 8D, 7D, E0, F3, A5, 89, 45, F8, 8B, 45, 0C, 5F, 89, 45, FC, 5E, 85, C0, 74, 0C, F6, 00, 08, 74, 07, C7, 45, F4, 00, 40, 99, 01, 8D, 45, F4, 50, FF, 75, F0, FF, 75, E4, FF, 75, E0, FF, 15, 44, B0, 41, 00, C9, C2, 08, 00, 8B, FF, 55, 8B, EC, 51, 53, 8B, 45, 0C, 83, C0, 0C, 89, 45, FC, 64, 8B, 1D, 00, 00, 00, 00, 8B, 03, 64, A3, 00, 00, 00, 00, 8B, 45, 08, 8B, 5D, 0C, 8B, 6D, FC, 8B, 63...
 
[+]

Code size:
103.5 KB (105,984 bytes)

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

http://install2.optimum-installer.com/o/.../LibreOffice_Setup.exe

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