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setup_osu.exe

OSU

INSTALLER TECHNOLOGY CO.

This installer routine uses the Babylon network to include bundled offers of potentially unwanted programs (mostly search adware) such as toolbars and browser extensions. The application setup_osu.exe, “Open Software Updater” by INSTALLER TECHNOLOGY CO has been detected as a potentially unwanted program by 3 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from installopensoftware.com and multiple other hosts.
Publisher:
Installer Technology Co  (signed by INSTALLER TECHNOLOGY CO.)

Product:
OSU

Description:
Open Software Updater

Version:
3.0.0.0

MD5:
b5ad3e830ef953f44fdb4dda66abd460

SHA-1:
bb578420239e7ef702ae0883441bce71b1741cb8

SHA-256:
40190e0cc63638c16a2cb7a869fad0467bcb33761335a06b7893d37038420a8c

Scanner detections:
3 / 68

Status:
Potentially unwanted

Analysis date:
4/25/2024 8:51:18 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Installer.INSTALLERTECHNOLOGYCO.J
14.8.8.0

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.14804

VIPRE Antivirus
InstallerTech
28458

File size:
184.5 KB (188,904 bytes)

Copyright:
Copyright Installer Technology Co. 2014

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
Language Neutral

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

Digital Signature
Signed by:
INSTALLER TECHNOLOGY CO.

Authority:
VeriSign, Inc.

Valid from:
10/7/2013 8:00:00 PM

Valid to:
10/23/2014 7:59:59 PM

Subject:
CN=INSTALLER TECHNOLOGY CO., OU=Digital ID Class 3 - Microsoft Software Validation v2, O=INSTALLER TECHNOLOGY CO., L=Miami Beach, S=Florida, 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:
4556C69814691A6077AE1628567ACB9F

File PE Metadata
Compilation timestamp:
12/5/2009 5:50:35 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
3072:1oPyys5jXJn47nrvpMv7qVq4wGjnNlJhKwiFizABnxT0pP:1zfAnrhQ7qVq4w4nTXKwiFiunxTs

Entry address:
0x323F

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 30, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 98, 27, 7A, 00, E8, 09, 2C, 00, 00, A3, E4, 26, 7A, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, DC, 79, 00, FF, 15, 58, 71, 40, 00, 68, B8, 91, 40, 00, 68, E0, 1E, 7A, 00, E8, BC, 28, 00, 00, FF, 15, B0, 70, 40, 00, BF, 00, 80, 7A, 00, 50, 57, E8, AA, 28, 00, 00...
 
[+]

Entropy:
7.6068

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file setup_osu.exe has been seen being distributed by the following 2 URLs.

http://installopensoftware.com/redirect.php

http://opensoftwareupdater.com/idownload.php

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