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surftasticsetup.exe

Surftastic

This is the installer and setup program from the Surftastic 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 surftasticsetup.exe by Surftastic has been detected as adware by 3 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer.
Publisher:
Surftastic  (signed and verified)

MD5:
9b589e18187ec730944c825deb9d554a

SHA-1:
1f57af96aff30f9d437ca8d3a9204eec487eea4a

SHA-256:
f3d1bb452f5d34f6862c70e8b7e2af307cd00eac7afeaf20503192f989d5f2e2

Scanner detections:
3 / 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:
4/18/2024 1:13:13 PM UTC  (today)

Scan engine
Detection
Engine version

AegisLab AV Signature
W32.Tenga
2.1.4+

Reason Heuristics
PUP.Installer.Surftastic.P
14.2.27.0

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.14123

File size:
227.6 KB (233,048 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\Documents and Settings\{user}\Local settings\temp\surftasticsetup.exe

Digital Signature
Signed by:
Surftastic

Authority:
VeriSign, Inc.

Valid from:
1/3/2014 8:00:00 AM

Valid to:
1/4/2015 7:59:59 AM

Subject:
CN=Surftastic, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Surftastic, 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:
117C1C381BA3522C50659E614BB20D99

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):
6144:wZ+11908c5kXDYMWPz0IWc/1RWBT5AYZm/G/HcD:tC5kXDYMmgq1s15AB/G/8D

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:
7.9162

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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