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softwareinstallation.exe

OutBrowse

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application softwareinstallation.exe by OutBrowse 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 OutBrowse Revenyou installer. The file has been seen being downloaded from downloads.downloadster.org.
Publisher:
OutBrowse  (signed and verified)

MD5:
61337cda20ad08bf1a02e09d6b9093fb

SHA-1:
568e9c28e155ea3e0344516fb08a543c136d89a7

SHA-256:
1d6e535be09b6b35f60a2aba278c37f89d5e0cf73a210cf87c43a3a2ff135106

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 an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
12/26/2024 12:31:12 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.Bundler (M)
16.6.11.10

File size:
105.5 KB (108,008 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
OutBrowse Revenyou (using Nullsoft Install System)

Language:
Language Neutral

Common path:
C:\users\jan\ma's letters\softwareinstallation.exe

Digital Signature
Signed by:
OutBrowse

Authority:
VeriSign, Inc.

Valid from:
10/23/2013 8:00:00 PM

Valid to:
10/24/2014 7:59:59 PM

Subject:
CN=OutBrowse, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=OutBrowse, L=Ramat Gan, S=Ramat Gan, C=IL

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:
56A6FE571611B68C9224798AD62913CA

File PE Metadata
Compilation timestamp:
12/5/2009 5:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
3072:NYgXdZt9P6D3XJ+C/5Ky/9XO3jR0eWSzUu/0WY:Ge34t/UQ9OzRgW/cF

Entry address:
0x30FA

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.6806

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://downloads.downloadster.org/download.php?id=24453dd9bea6c8d0da87b22857d60d2d9cf557b6&z=8&p=eyJweSI6ImRvIiwicnMiOiJnIiwicnQiOiJkIiwiYyI6InVzIiwibyI6IndpbjciLCJiIjoiY2gzMiIsInVfaWQiOiJkb181MzAxYjg3ZjVhMWIwMS4yMTEzMzk4OS41NTJjOTVjOWI0MjUwYTA1MDMyMjdmZGVhNzI5MGM2NiIsInBhX2lkIjoiOCIsInN0X2lkIjoiMCIsInNwX2lkIjoiMDAwMC0wNzEzNiIsInRzIjoxMzkyNjIxNjk1LCJrdyI6InZpZGVvIGNvbnZlcnRlciIsImN1IjoiIiwiY2EiOm51bGx9

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