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s4s15.exe

The application s4s15.exe has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the Nullsoft Install System installer, however the file is not signed with an authenticode signature from a trusted source. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from dt3j8jg8ei6zr.cloudfront.net.
Description:
Uhnqce

Version:
9.19.19.4

MD5:
3d5dce5eef515683665ea371b6ff46c8

SHA-1:
806e3b1cd07555f430b212ab7d985d07c649fb9e

SHA-256:
cfbb7df018667fa09f8933a5413375f6220d65239c1cd59141379424a7728e05

Scanner detections:
1 / 68

Status:
Adware

Explanation:
This is part of the Crossrider Internet browser extension framework which may modify the user's web browser settings including changing the home and search pages.

Note:
Crossrider is the owner of a platform that enables the creation of cross-browser extensions by developers but is not the owner of this detected application.

Analysis date:
5/7/2024 6:15:36 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Downloader.Installer (M)
16.2.4.3

File size:
7.7 MB (8,053,676 bytes)

File type:
Executable application (Win32 EXE)

Installer:
Nullsoft Install System

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\temp\s4s15.exe

File PE Metadata
Compilation timestamp:
12/4/2012 2:55:02 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.22

CTPH (ssdeep):
196608:bnhSL4UJJ42zaZ+hzA+wY+poAnyUPkcAYU:bI4UJJ42m+tAyUe5

Entry address:
0x4323

Entry point:
55, 89, E5, 57, 56, 53, 81, EC, AC, 01, 00, 00, FF, 15, 74, C3, 44, 00, C7, 04, 24, 01, 80, 00, 00, FF, 15, 58, C4, 44, 00, 53, C7, 04, 24, 00, 00, 00, 00, FF, 15, 98, C4, 44, 00, 56, A3, 40, 3B, 44, 00, C7, 04, 24, 08, 00, 00, 00, E8, 8D, 3B, 00, 00, A3, 9C, 3B, 44, 00, 8D, 85, 84, FE, FF, FF, 57, C7, 44, 24, 10, 00, 00, 00, 00, C7, 44, 24, 0C, 60, 01, 00, 00, 89, 44, 24, 08, C7, 44, 24, 04, 00, 00, 00, 00, C7, 04, 24, 01, B3, 40, 00, FF, 15, AC, C4, 44, 00, 83, EC, 14, C7, 44, 24, 04, 02, B3, 40, 00, C7...
 
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Code size:
34.5 KB (35,328 bytes)

The file s4s15.exe has been seen being distributed by the following URL.

http://dt3j8jg8ei6zr.cloudfront.net/mirror/.../s4s15.exe

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