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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 clk1004.com.
Publisher:
Otopia Soft  (signed and verified)

MD5:
8c19306d970440b6760c8d593b5de010

SHA-1:
7bb7c5e864d2989f6c54e5985a84b8e65e14bca3

SHA-256:
7e7c5e1f1270b3ca748ed105dd713a86485f4bc5e37e650a260338d4b1b5c839

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:
11/6/2024 7:34:44 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.OtopiaSo.Bundler (M)
16.5.31.4

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

CTPH (ssdeep):
12288:OEoGrzFLTcLNmQYb72ZuEXQk94UbQhvCvLti5YhMnpNNf9b:OH8xhQYbCbX79z64tiCu/f9

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:
7.9737

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://clk1004.com/adServe/adClick?ai=08zHTxdapFV8ndRJyW5F0N4DfX6Mrdz79BAM4D5PrSKyEauKnE4uB45Ze8qHKNg4Ou9f gVv56IX FJP4X0KI0kq86MXxY QicX3lQ4QqQCCyKY4t/d2oxF1n7lmyQZLCV4yWjh7EwUw9H2i4bzXpJPOF hAjVvbNI/AvInzoGxhICztpKOU7smRjSnRFK/Fyg5DMpOh7lOZs=&ui= MD7JiY3H oR3o9bKNW8lZoBu3I/.../HKKY0Jsy&src=BANNER

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