home

setup.exe

Spring Smart

This is the installer and setup program from the Spring Smart 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 Spring Smart has been detected as adware by 15 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:
Spring Smart  (signed and verified)

MD5:
ae2a39f534be72a028a86d4d07236ffc

SHA-1:
f803deb70aedb04d97080aa33ffef687d019a11c

SHA-256:
a9bb513062d80ab14813211831862f9f34ae14f64de14e4fa6b82bb86dab3219

Scanner detections:
15 / 68

Status:
Adware

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

Analysis date:
4/26/2024 7:40:34 AM UTC  (today)

Scan engine
Detection
Engine version

Bkav FE
W32.Clod71e.Trojan
1.3.0.4613

Comodo Security
Application.Win32.Altbrowse.AK
17579

Dr.Web
Adware.Searcher.2574
9.0.1.0356

ESET NOD32
Win32/BrowseFox
7.9255

Fortinet FortiGate
Adware/Agent
12/22/2013

IKARUS anti.virus
not-a-virus:AdWare.Win32.Agent
t3scan.2.2.29

K7 AntiVirus
Unwanted-Program
13.175.10781

Kaspersky
not-a-virus:AdWare.Win32.Agent
14.0.0.4510

Malwarebytes
PUP.Optional.SpringSmart.A
v2013.12.22.07

NANO AntiVirus
Riskware.Win32.Agent.cqvnby
0.28.0.57029

Reason Heuristics
PUP.Installer.SpringSmart.F
14.8.8.0

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.131220

Trend Micro House Call
TROJ_GEN.F47V1125
7.2.356

Vba32 AntiVirus
AdWare.Agent
3.12.24.3

VIPRE Antivirus
Yontoo
25246

File size:
822.9 KB (842,624 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:
Spring Smart

Authority:
VeriSign, Inc.

Valid from:
8/21/2013 9:00:00 PM

Valid to:
8/22/2015 8:59:59 PM

Subject:
CN=Spring Smart, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Spring Smart, 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:
5D69FD87A1BCECDB8891F45F148E34E2

File PE Metadata
Compilation timestamp:
12/5/2009 8:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:/d/EUqp6F8hDAhDRiYwR+Q+k0/B20qp6l87:lcNoF8tAdRiOU052tol87

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...
 
[+]

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://wpc.0952.edgecastcdn.net/800952/.../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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