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setup.exe

TowerTilt

This is the installer and setup program from the TowerTilt 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 TowerTilt 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:
TowerTilt  (signed and verified)

MD5:
612fe90ed4fd8bfb457b937d88a9813f

SHA-1:
e929f719ba1ee6398ca41c46cdc3f8cce8a1f98b

SHA-256:
2aa39fd9c872f191dce4c99074b6674ccc60515f1ed0a8522901455d1f4ab68c

Scanner detections:
13 / 68

Status:
Adware

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

Analysis date:
4/18/2024 2:53:17 AM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
APPL/BrowseFox.Gen2
7.11.144.24

Comodo Security
Application.Win32.Altbrowse.AK
18123

Dr.Web
Trojan.BPlug.17
9.0.1.0108

ESET NOD32
Win32/BrowseFox (variant)
8.9692

G Data
Win32.Application.BrowseFox
14.4.24

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.3999

Malwarebytes
PUP.Optional.TowerTilt.A
v2014.04.18.02

NANO AntiVirus
Riskware.Win32.Agent.crkvek
0.28.0.59288

Reason Heuristics
PUP.Installer.TowerTilt.F
14.4.20.21

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.14416

SUPERAntiSpyware
Adware.BrowseFox/Variant
10659

Trend Micro House Call
TROJ_GE.5517C5C0
7.2.108

VIPRE Antivirus
Yontoo
28340

File size:
2 MB (2,107,008 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:
TowerTilt

Authority:
VeriSign, Inc.

Valid from:
2/4/2014 8:00:00 AM

Valid to:
2/5/2015 7:59:59 AM

Subject:
CN=TowerTilt, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=TowerTilt, L=Santa Monica, 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:
0DC21B60DDFB723E55B2F05376083F29

File PE Metadata
Compilation timestamp:
12/6/2009 6:52:01 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:X9kJ6F8q6KQKUCbgKB6z0FmcLbH14c6o/8Rzfb+YZXHFJrI4V3Z0RKcEVhAzGp1h:qIF8rWZB6z0gpxlfbnM4IsLp1lPEIl86

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:
7.9976

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

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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