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OverAppsSetup.exe

OverApps

Web Widget Works LLC

This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application OverAppsSetup.exe by Web Widget Works has been detected as adware by 9 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from gsf-cf.softonic.com. While running, it connects to the Internet address api.yontoo.com on port 80 using the HTTP protocol.
Publisher:
Web Widget Works LLC  (signed and verified)

Product:
OverApps

Version:
0.98

MD5:
642cfb83bed4e60770d15102e0d802e2

SHA-1:
8ae2c9bd08063598413e93eeac4dfcbcda460285

SHA-256:
de4be087d44c1dd238e04d8c9f72c44c6cff71b209cd15711e26cfabbf37fd79

Scanner detections:
9 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
4/25/2024 9:22:37 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Adware.Yontoo
7.1.1

Avira AntiVirus
ADWARE/Yontoo.Gen
7.11.138.124

Dr.Web
Adware.Siggen.24249
9.0.1.086

ESET NOD32
Win32/Adware.Yontoo
8.9579

Fortinet FortiGate
Riskware/Yontoo
3/27/2014

F-Prot
W32/AdwareX.JVA
v6.4.7.1.166

IKARUS anti.virus
AdWare.Yontoo
t3scan.2.2.29

K7 AntiVirus
Adware
13.176.11524

NANO AntiVirus
Trojan.Win32.Yontoo.zkeyb
0.28.0.58491

File size:
841.6 KB (861,776 bytes)

Product version:
0.98

Copyright:
Copyright (c) 2011 Web Widget Works LLC

Trademarks:
Copyright (c) 2011 Web Widget Works LLC

Original file name:
OverAppsSetup.exe

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

Common path:
C:\users\{user}\downloads\overappssetup.exe

Digital Signature
Signed by:
Web Widget Works LLC

Authority:
VeriSign, Inc.

Valid from:
7/24/2011 8:00:00 PM

Valid to:
7/24/2012 7:59:59 PM

Subject:
CN=Web Widget Works LLC, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Web Widget Works LLC, L=Carlsbad, 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:
4220BFBEDC6A3B3BE113AEFBA26344F6

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

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:0guULkr5jJiATXbWS9nMjPPgRBksb99cz:0qgVjMKXtMjA5k

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...
 
[+]

Entropy:
7.9535

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://gsf-cf.softonic.com/8ae/2c9/.../file?SD_used=0&channel=WEB&fdh=no&id_file=328900&instance=softonic_en&type=PROGRAM&Expires=1428004528&Key-Pair-Id=APKAJUA62FNWTI37JTGQ&Signature=GhOJWw3YVy73c56zf9cJ56bhQw-J6VQ9DN84FpVP~hnBd8Ze2hs070FksBR4qC-I3SIOTmAiBzosoNyZ2J1ZAA01ChJBe-SXMocL-5M4jLK1xEJkAir~QU~-eizktCp7EMiJx0rRvP5rG1vbwRNfdam11C~F8SzdSJXEMTaEKkw_&filename=OverAppsSetup.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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