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yosetup.exe

RepkaSoft

The application yosetup.exe by RepkaSoft has been detected as a potentially unwanted program by 6 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The installer uses the OpenCandy monitzation platform which will donwload and install offers in the setup for potentially unwanted software including ad/search-supported toolbars. The file has been seen being downloaded from software-files-a.cnet.com.
Publisher:
RepkaSoft  (signed and verified)

MD5:
7e22e79fa0a3960a57f854c85fb01d86

SHA-1:
39d3f9575c27dba2bda7a9388d0c9ba2fc992a60

SHA-256:
134af46ae34291224f2d012279b9629d3070099f5c35dc03b92ed725fabd9316

Scanner detections:
6 / 68

Status:
Potentially unwanted

Explanation:
Packages the OpenCandy software bundler that offers to install additional software and may include web browser add-ons and toolbars which display advertising (based on publisher settings and geo context).

Analysis date:
4/23/2024 1:03:56 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.OpenCandy
7.1.1

Dr.Web
Adware.OpenCandy.6
9.0.1.093

ESET NOD32
Win32/OpenCandy
8.9569

Malwarebytes
PUP.Optional.OpenCandy
v2014.04.03.06

NANO AntiVirus
Trojan.Win32.OpenCandy.cueigx
0.28.0.58491

Rising Antivirus
PE:PUF.OpenCandy!1.9DE5
23.00.65.14401

File size:
10.8 MB (11,294,864 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
RepkaSoft

Authority:
VeriSign, Inc.

Valid from:
10/28/2012 9:00:00 PM

Valid to:
10/29/2013 8:59:59 PM

Subject:
CN=RepkaSoft, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=RepkaSoft, L=Saint-Petersburg, S=Russian Federation, C=RU

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:
31CB753697DB3EF2FDFB9971383D9449

File PE Metadata
Compilation timestamp:
12/5/2009 7:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
196608:T5Aw8v5xh8816thqrIdLWCEVkghKpXKEnqOMRkhe1/BV+x/wMcl:T5qBP8jthZdWVGJq71y1wM6

Entry address:
0x323C

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, 58, 3F, 42, 00, E8, 09, 2C, 00, 00, A3, A4, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 58, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, B8, 91, 40, 00, 68, A0, 36, 42, 00, E8, BC, 28, 00, 00, FF, 15, B0, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, AA, 28, 00, 00...
 
[+]

Entropy:
7.9982

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

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

http://software-files-a.cnet.com/s/software/13/11/97/.../yosetup.exe

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