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umxpqp3ryj.exe

Box Rock

This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application umxpqp3ryj.exe by Box Rock has been detected as adware by 20 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:
Box Rock  (signed and verified)

MD5:
2482401eabce67b37a659669c6b96507

SHA-1:
4042005385111ac5bfccdddcc9ba3bced4f6c026

SHA-256:
46de32338bd82adfdc3d498de9ebadab293e843ba6c964ae8170dbd370ff513f

Scanner detections:
20 / 68

Status:
Adware

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

Analysis date:
4/28/2024 4:58:43 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.AT
6749949

Avira AntiVirus
ADWARE/BrowseFox.Gen
7.11.214.212

avast!
BrowseFox-EZ [PUP]
150129-1

AVG
Generic
2016.0.3177

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1538

Bitdefender
Adware.BrowseFox.AT
1.0.20.335

Dr.Web
Trojan.Yontoo.766
9.0.1.05190

Emsisoft Anti-Malware
Adware.BrowseFox.AT
9.0.0.4799

ESET NOD32
Win32/BrowseFox.C potentially unwanted application
7.0.302.0

F-Secure
Adware.BrowseFox.AT
5.13.68

G Data
Adware.BrowseFox.AT
15.3.25

herdProtect (fuzzy)
variant of 1ab64rn3.exe (Adware)
2015.6.14.16

K7 AntiVirus
Unwanted-Program
13.200.15196

MicroWorld eScan
Adware.BrowseFox.AT
16.0.0.201

NANO AntiVirus
Trojan.Nsis.BrowseFox.dnxihk
0.30.0.296

nProtect
Adware.BrowseFox.AT
15.03.06.01

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

Reason Heuristics
PUP.Installer.Yontoo
15.3.8.9

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.15306

VIPRE Antivirus
Threat.4150696
38050

File size:
464.1 KB (475,264 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\umxpqp3ryj.exe

Digital Signature
Signed by:
Box Rock

Authority:
VeriSign, Inc.

Valid from:
10/7/2014 1:00:00 AM

Valid to:
10/3/2015 12:59:59 AM

Subject:
CN=Box Rock, O=Box Rock, 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:
1125198B1C5DF8CC1185255178F1DAFC

File PE Metadata
Compilation timestamp:
12/5/2009 10:52:01 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:2Ps8E+3Im31s15Ap/G/8/3D0Fw/tN8dkmLtpHHHrh7ON:2PsQV6j8/z0FmcLbH1e

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:
7.9740

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

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