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54ead74a_stp.exe

Ace Race

This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application 54ead74a_stp.exe by Ace Race has been detected as adware by 23 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. It is also typically executed from the user's temporary directory.
Publisher:
Ace Race  (signed and verified)

MD5:
7ddd954ff711ee56cb1e2d0a1117747f

SHA-1:
ab0149175aa688e7f6871b08a779c8438aca5b11

SHA-256:
e97d616ab96aa9240fb7724138a65c70b829653325ec5066e16eb8cb76d321ed

Scanner detections:
23 / 68

Status:
Adware

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

Analysis date:
4/24/2024 6:44:06 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.BB
705

AhnLab V3 Security
PUP/Win32.SwiftBrowse
2015.01.21

Avira AntiVirus
ADWARE/BrowseFox.Gen
7.11.203.160

AVG
Generic
2016.0.3183

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1532

Bitdefender
Adware.BrowseFox.BB
1.0.20.305

Dr.Web
Trojan.Yontoo.474
9.0.1.061

Emsisoft Anti-Malware
Adware.BrowseFox.BB
8.15.03.02.01

ESET NOD32
Win32/BrowseFox
9.11047

F-Prot
W32/S-b5aa130f
v6.4.7.1.166

F-Secure
Adware.BrowseFox.BB
11.2015-02-03_2

G Data
Adware.BrowseFox.BB
15.3.24

K7 AntiVirus
Unwanted-Program
13.191.14703

Malwarebytes
PUP.Optional.BPlug
v2015.03.02.01

McAfee
Artemis!7DDD954FF711
5600.6839

MicroWorld eScan
Adware.BrowseFox.BB
16.0.0.183

NANO AntiVirus
Trojan.Win32.BPlug.dfsehz
0.30.0.64812

nProtect
Adware.BrowseFox.BB
15.01.19.01

Qihoo 360 Security
HEUR/QVM42.0.Malware.Gen
1.0.0.1015

Reason Heuristics
PUP.Yontoo
15.3.2.1

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.15228

Sophos
Generic PUA KL
4.98

VIPRE Antivirus
Trojan.Win32.Generic
36836

File size:
569.5 KB (583,120 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\54ead74a_stp.exe

Digital Signature
Signed by:
Ace Race

Authority:
VeriSign, Inc.

Valid from:
10/6/2014 7:00:00 PM

Valid to:
10/7/2015 6:59:59 PM

Subject:
CN=Ace Race, O=Ace Race, 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:
47DF877938071D6194F321723076892E

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):
12288:eNY8bsGX5E1s15Ap/G/8/3D0Fw/tN8dkmLtpHHHrh7QPkLW2ds:eNLH5E6j8/z0FmcLbH1QVf

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:
7.9813

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

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