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focusbasesetup.exe

focusbase

This is the installer and setup program from the focusbase 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 Windows service that will update the software with additional features. The application focusbasesetup.exe by focusbase has been detected as adware by 7 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:
focusbase  (signed and verified)

MD5:
b9378d633e0deabe9c4e52807d494a9e

SHA-1:
cb3c9ff6778b84689f0e5924c30c378483eb44c7

SHA-256:
a22d330c8c128d1b6f971f4ede060b529ffa3ded09f959efa7818605536f049f

Scanner detections:
7 / 68

Status:
Adware

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

Analysis date:
4/23/2024 9:11:18 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
Focusbase
2015.0.3368

ESET NOD32
Win32/BrowseFox.C potentially unwanted application
7.0.302.0

Malwarebytes
PUP.Optional.FocusBase.A
v2014.08.29.01

Panda Antivirus
Adware/BrowserFox
14.08.29.01

Reason Heuristics
PUP.Installer.focusbase.O
14.8.29.1

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.14827

VIPRE Antivirus
Trojan.Win32.Generic
32642

File size:
568.5 KB (582,152 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}\focusbasesetup.exe

Digital Signature
Signed by:
focusbase

Authority:
VeriSign, Inc.

Valid from:
4/22/2014 5:30:00 AM

Valid to:
4/23/2015 5:29:59 AM

Subject:
CN=focusbase, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=focusbase, 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:
229BE95AFAF17766126629CC0A897C5F

File PE Metadata
Compilation timestamp:
12/6/2009 4:22:01 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:K3gxts+K1s15Ap/G/8/3D0Fw/t/8dkmLtpHHHrh7AL+smAbnE6:KSs96j8/z0F0cLbH1A53E6

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:
7.9812

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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