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setup.exe

Jotzey

This is the installer and setup program from the Jotzey branded Yontoo adware web browser extension. This adware injects various forms of advertisements in the user's web browser based on the HTML content and URLs viewed. Ad include banners, in-line context text links, coupons, and search. The program will install an auto-updating background service that will update the software with additional features. The application setup.exe by Jotzey has been detected as adware by 13 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages.
Publisher:
Jotzey  (signed and verified)

MD5:
8884eb89e2be34c11f6e130569098b9f

SHA-1:
796c2d36c8cc274909b62263b9e78d8bd91419ae

SHA-256:
7c9950cae4b5ed0713eded3442996cc2b338a50e4ab0e19ff278685c643b729f

Scanner detections:
13 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
1/14/2025 11:04:58 AM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:Adware-gen [Adw]
2014.9-140323

Comodo Security
Application.Win32.Altbrowse.AK
17970

Dr.Web
Trojan.BPlug.31
9.0.1.082

ESET NOD32
Win32/BrowseFox (variant)
8.9574

Fortinet FortiGate
Adware/Agent
3/23/2014

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.4126

Malwarebytes
PUP.Optional.Jotzey.A
v2014.03.23.07

NANO AntiVirus
Riskware.Win32.Agent.cummdd
0.28.0.58491

Reason Heuristics
PUP.Installer.Jotzey.F
14.3.23.19

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.14321

Sophos
Generic PUA LE
4.98

SUPERAntiSpyware
Adware.BrowseFox/Variant
10709

VIPRE Antivirus
Yontoo
27616

File size:
2.8 MB (2,916,960 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\setup.exe

Digital Signature
Signed by:
Jotzey

Authority:
VeriSign, Inc.

Valid from:
1/11/2014 4:00:00 PM

Valid to:
1/12/2015 3:59:59 PM

Subject:
CN=Jotzey, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Jotzey, L=San Diego, S=California, C=US

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:
4C7B335D1F24250859B4B5C0085A062C

File PE Metadata
Compilation timestamp:
12/5/2009 2:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
49152:IWF8ABAdRiO6gVPz0gxKD/uJzO/1kGNHJAgGIC1yD6gWl8oM:IWuABWR/66Pz0dmJzOtV7pGIC18lWON

Entry address:
0x30CB

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, 38, 6F, 44, 00, E8, F1, 2B, 00, 00, A3, 84, 6E, 44, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 30, 9C, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 80, 2E, 44, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, F0, 46, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9987

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

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

http://install-cdn.jotzey.net/setup.exe

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to wac.edgecastcdn.net  (72.21.81.13:80)

TCP (HTTP):
Connects to service.yontoo.com  (8.25.35.148:80)

TCP (HTTP):
Connects to api.yontoo.com  (8.25.35.15:80)

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