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 adware by 6 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 opensoftwareupdater.com.
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Publisher:
Installer Technology Co  (signed by INSTALLER TECHNOLOGY CO.)

Product:
OSU

Description:
Open Software Updater

Version:
3.0.0.0

MD5:
860401ab3cbef4f16163f4b1cf82fd05

SHA-1:
0b0eaabee1554f5cb2fdde477894f9c2305a9129

SHA-256:
76858e7caf29dc9d668511d8151e7f2881e314a25703b279adb001cb1a0b4490

Scanner detections:
6 / 68

Status:
Adware

Analysis date:
12/5/2016 3:32:39 AM UTC  (today)

Scan engine
Detection
Engine version

Dr.Web
Adware.Downware.3736
9.0.1.0161

Reason Heuristics
PUP.Installer.INSTALLERTECHNOLOGYCO.J
14.8.8.0

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.14608

Sophos
Installer Technology Co
4.98

Trend Micro House Call
TROJ_GEN.F47V0522
7.2.161

VIPRE Antivirus
InstallerTech
29728

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File size:
318.5 KB (326,120 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}\downloads\setup_osu.exe

Digital Signature
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):
6144:6zfHGBHtisG50m9xLFxqnJQHUPS7jmQ4nZymXfV2rc65Grp9G:qGBMsdm9lFo9qnmQAUmt235G/G

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:
7.8223

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 URL.

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