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installation.exe

Otopia Soft

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application installation.exe by Otopia Soft 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 clk1008.com.
Publisher:
Otopia Soft  (signed and verified)

MD5:
d1d3c31c1b1f79c9b052011af24285cf

SHA-1:
935f2f337583dc2751c11500dd61e9364e9a6b10

SHA-256:
fc6355c5df094875fdf529ef6957a41bd756ecb6c7a51b960c75c710ead4ec2b

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:
1/24/2025 12:11:14 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse (M)
17.3.13.12

File size:
573.7 KB (587,472 bytes)

File type:
Executable application (Win32 EXE)

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

Language:
Language Neutral

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

Digital Signature
Signed by:
Otopia Soft

Authority:
thawte, Inc.

Valid from:
12/16/2014 4:00:00 PM

Valid to:
12/17/2015 3:59:59 PM

Subject:
CN=Otopia Soft, O=Otopia Soft, L=Dublin, S=Dublin, C=IE

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
13322CE09A267D0E43AD6494E31B8A89

File PE Metadata
Compilation timestamp:
12/5/2009 2:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

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:
7.9738

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://clk1008.com/adServe/adClick?ai=08zHTxdapFXuAx489KtPAHOBQyb8mg6culIE4nVtnuznxvYxgedbaU4TdBdCLXowePmgOCOvgGdt aRHwfwUN4Ap2TZKl8/fajyExnATSiHR0XLqNFqX6e5Zg7xna1kONGCUKSHS26mpBhQpjUFGK/weg 9AdfII1s/.../2b4G7GS7n6gAzM2d4IhRbSXzevatdkopkCUpj1UknnHusW5IDUpHeN34saea5v4wc luODqGWSQsQHXjql&ui=cmUiRi391R9hKYYsUGf0c4BVNmK1S2tVmTIMbcPs0ip3MIK3vnzsmR3aS5gTeeTJ&src=BANNER

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