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yosetup.exe

RepkaSoft

The application yosetup.exe by RepkaSoft has been detected as a potentially unwanted program by 4 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 letoltes.szoftverbazis.hu and multiple other hosts.
Publisher:
RepkaSoft  (signed and verified)

MD5:
80e5fec8096f8bc3bf7b0ee8ee07c065

SHA-1:
0ebe179a9af5d22eb1f45d5fc2cbd91160070e92

SHA-256:
7895c062addd19c03f87d0bc5e8fda216190a32a6bee80699fa7f4ef006d8e5c

Scanner detections:
4 / 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:
4/19/2024 7:31:12 PM UTC  (today)

Scan engine
Detection
Engine version

ESET NOD32
Win32/OpenCandy
8.9295

Fortinet FortiGate
Riskware/OpenCandy
1/5/2014

Malwarebytes
PUP.Optional.OpenCandy
v2014.01.05.07

Rising Antivirus
PE:PUF.OpenCandy!1.9DE5
23.00.65.14103

File size:
10.7 MB (11,219,360 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 8:00:00 PM

Valid to:
10/29/2013 7:59:59 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 5:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
196608:KqnBBb6eQRGKfzYGMihHSn1y23qXelR4O5646gT9RQRO1JDmyScgc/HG1zK5g:7nBBb6eQbfMGM0tlu76LgT9ORO1RlesU

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:
7.9981

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 5 URLs.

http://letoltes.szoftverbazis.hu/bGO7gftxLaO2SSZ9xQxFIw/1478763745/.../yosetup.exe

http://letoltes.szoftverbazis.hu/rmprjnAXVhh6d6c5s8SIAg/1454770454/.../yosetup.exe

http://letoltes.szoftverbazis.hu/OrrqSIcXFh1u7ZhPwFlwYw/1471187127/.../yosetup.exe

http://letoltes.szoftverbazis.hu/Ckuj_3MgWhJ9fOO2nRQ1LQ/1465292253/.../yosetup.exe

http://yowindow.com/.../yosetup.exe

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