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sizlsearch_ad.exe

sizlsearch

This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application sizlsearch_ad.exe by sizlsearch 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. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from d1t653m828c3x8.cloudfront.net and multiple other hosts.
Publisher:
sizlsearch  (signed and verified)

MD5:
543c8e41dc91370ee23c1a93e5d62c85

SHA-1:
f5ceca62219ed0dff0ef92a02409fa8f82f5819c

SHA-256:
8c157227f76b06049262db1e72daa2756cfa06fa8e7f725d9a6d6ace410babf7

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:
5/2/2024 2:44:14 PM UTC  (today)

Scan engine
Detection
Engine version

Malwarebytes
PUP.Optional.SizlSearch.A
v2014.04.07.01

Reason Heuristics
PUP.sizlsearch.N
14.4.7.1

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.14326

File size:
227.6 KB (233,088 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
sizlsearch

Authority:
VeriSign, Inc.

Valid from:
11/13/2013 5:00:00 PM

Valid to:
11/14/2014 4:59:59 PM

Subject:
CN=sizlsearch, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=sizlsearch, 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:
14A03B7644CA6A74D050BBD6188EAA95

File PE Metadata
Compilation timestamp:
12/5/2009 3:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:iZ+11RPggPH3g7VmapnL/1RWBT5AYZm/G/Hc2:7Pg6H2nb1s15AB/G/82

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:
7.9158

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

The file sizlsearch_ad.exe has been seen being distributed by the following 5 URLs.

http://d1t653m828c3x8.cloudfront.net/bundles/.../sizlsearch_ad.exe

http://dm930xmxv1gqs.cloudfront.net/bundles/.../sizlsearch_ad.exe

http://drzwu57ht9dxd.cloudfront.net/bundles/.../sizlsearch_ad.exe

http://d1s8azhe8rpvoz.cloudfront.net/bundles/.../sizlsearch_ad.exe

http://d3emsmln8xfj03.cloudfront.net/bundles/.../sizlsearch_ad.exe

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