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blindbatsetup.exe

blindbat

This is the installer and setup program from the blindbat 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 blindbatsetup.exe by blindbat has been detected as adware by 4 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer.
Publisher:
blindbat  (signed and verified)

MD5:
48bb1b3e1d37ceca1ffd4e5b5ce7d46a

SHA-1:
e28ee54672468d1593d880028327a818d97923d0

SHA-256:
9f1e7e674ab70590cd58a8c07eeddb42d4601468930dd744186ae312c4b93c01

Scanner detections:
4 / 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 5:57:39 PM UTC  (today)

Scan engine
Detection
Engine version

Dr.Web
Trojan.BPlug.13
9.0.1.033

McAfee
Artemis!48BB1B3E1D37
5600.7231

Reason Heuristics
PUP.Installer.blindbat.N
14.2.13.19

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.14131

File size:
227.6 KB (233,096 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\blindbatsetup.exe

Digital Signature
Signed by:
blindbat

Authority:
VeriSign, Inc.

Valid from:
11/26/2013 6:00:00 PM

Valid to:
11/27/2014 5:59:59 PM

Subject:
CN=blindbat, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=blindbat, 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:
0B7F97173CD91AC680AED809CA9B3B59

File PE Metadata
Compilation timestamp:
12/5/2009 4:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:YZ+1194XgEjhUnl4ead0K4/D/1RWBT5AYZm/G/Hc55:FXlvad0K471s15AB/G/855

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:
7.9161

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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