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yosetup.exe

Pavel Repkin

The application yosetup.exe by Pavel Repkin has been detected as adware 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. It is also typically executed from the user's temporary directory.
Publisher:
Pavel Repkin  (signed and verified)

MD5:
3e430074e62dd6a6d75b240212b75903

SHA-1:
eee5cd2e6181ac7cb5b54cc22d7e24a7fc12b7d1

SHA-256:
c664c2437b9d3a35abd956014bc017863d58ff9054598bb4f836174b1bb8fea8

Scanner detections:
6 / 68

Status:
Adware

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:
11/12/2024 6:30:38 PM UTC  (today)

Scan engine
Detection
Engine version

Baidu Antivirus
Trojan.Win32.OpenCandy
4.0.3.1424

ESET NOD32
Win32/OpenCandy
8.8775

Malwarebytes
PUP.Optional.OpenCandy
v2014.02.04.01

McAfee
Artemis!3E430074E62D
5600.7229

NANO AntiVirus
Trojan.Win32.OpenCandy.bhhelr
0.26.0.54404

Reason Heuristics
Trojan.Adw.Installer.PavelRepkin.H
14.2.4.13

File size:
7.7 MB (8,071,248 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\docu\yosetup.exe

Digital Signature
Signed by:
Pavel Repkin

Authority:
StartCom Ltd.

Valid from:
8/30/2011 2:17:25 AM

Valid to:
8/30/2013 9:50:27 AM

Subject:
E=pavel.repkin@gmail.com, CN=Pavel Repkin, L=Saint Petersburg, S=Saint Petersburg City, C=RU, Description=496726-6lnbyJoXvJM0x5wb

Issuer:
CN=StartCom Class 2 Primary Intermediate Object CA, OU=Secure Digital Certificate Signing, O=StartCom Ltd., C=IL

Serial number:
03ED

File PE Metadata
Compilation timestamp:
12/5/2009 10:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
196608:7cGGhILqW1zBox2l/84V/U7D8eRBsWi5Lm6vIl:7pGhIWW1tFB84xU3Yq6Q

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...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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