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razorwebsetup.exe

Razor Web

This is the installer and setup program from the Razor Web 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 razorwebsetup.exe by Razor Web 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:
Razor Web  (signed and verified)

Version:
2.0.5631.22842

MD5:
9f76a16b2a3bddc05def1b885490a673

SHA-1:
b0bff4ea20460e71353c547f4513aa2ee47ed444

SHA-256:
b3f566aabb63c9ca36d49ff18d2451ea975bad8f544da369110849dde684ed7e

Scanner detections:
7 / 68

Status:
Adware

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

Analysis date:
2/24/2025 8:54:03 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
BrowseFox
2016.0.3090

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1563

Clam AntiVirus
Win.Adware.Browsefox-725
0.98/20543

Dr.Web
Trojan.Yontoo.1859
9.0.1.05190

ESET NOD32
Win32/BrowseFox.BC potentially unwanted application
7.0.302.0

Malwarebytes
PUP.Optional.RazorWeb.A
v2015.06.03.12

Vba32 AntiVirus
suspected of Trojan.Downloader.gen.h
3.12.26.4

File size:
292.1 KB (299,160 bytes)

Product version:
2015.06.02

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
Language Neutral

Digital Signature
Signed by:
Razor Web

Authority:
VeriSign, Inc.

Valid from:
3/24/2015 5:00:00 PM

Valid to:
3/24/2016 4:59:59 PM

Subject:
CN=Razor Web, O=Razor Web, 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:
1607E89C1B423660BDDDD63E03C260E2

File PE Metadata
Compilation timestamp:
6/4/2014 4:58:31 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
6144:9Q35WnM3DoFFjuvf/toNQ8dqLuJoU0U7Hd8CntQOHHM+HFFTjXdpNnT2:kWnM3D0Fw/tN8dkmLtpHHHrh7

Entry address:
0x31E4

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, E0, 73, 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, B8, 6C, 44, 00, E8, 1B, 25, 00, 00, 53, 68, 60, 01, 00, 00, A3, C0, 6B, 44, 00, 8D, 44, 24, 38, 50, 53, 68, DB, 73, 40, 00, FF, 15, 58, 71, 40, 00, 68, D0, 73, 40, 00, 68, C0, 2B, 44, 00, E8, 0D, 24, 00, 00, FF, 15, AC, 70, 40, 00, 50, BF, 00, F0, 46, 00, 57, E8, FB, 23, 00, 00...
 
[+]

Entropy:
7.9374

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 a23-67-251-59.deploy.static.akamaitechnologies.com  (23.67.251.59:80)

TCP (HTTP):
Connects to a23-67-251-50.deploy.static.akamaitechnologies.com  (23.67.251.50:80)

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