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firefox.exe

YEs Apps

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application firefox.exe by YEs Apps 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 OutBrowse Revenyou installer. With this installer, users are expecting to download the free Mozilla Firefox web browser but before that occurs they may be presented with additional offers, mostly potentially unwanted software or adware.
Publisher:
RHLXG  (signed by YEs Apps)

Product:
RHLXG

Version:
4547.15627.854.7400

MD5:
89b6ae531f15bcc95b9a16aba61fe23c

SHA-1:
860dcafd2fc2467d8f682b8092f9b4a12e204b36

SHA-256:
b6dc203d902fa7a3fc1b611a5a94423365f87ade809a20faa0bbe55a2e6d9164

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Description:
This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
11/23/2024 6:01:39 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse (M)
16.7.22.6

File size:
733.9 KB (751,560 bytes)

Product version:
4547.15627.854.7400

Copyright:
RHLXG

Trademarks:
RHLXG

File type:
Executable application (Win32 EXE)

Bundler/Installer:
OutBrowse Revenyou (using Nullsoft Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\firefox.exe

Digital Signature
Signed by:
YEs Apps

Authority:
thawte, Inc.

Valid from:
6/10/2015 8:00:00 PM

Valid to:
12/17/2015 6:59:59 PM

Subject:
CN=YEs Apps, O=YEs Apps, L=Dublin, S=Dublin, C=IE

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
4F3FC22DA768745B9CADFE21737E0CF5

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

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:Uyr0aLhoomKFHYLSfU5zM74KTkamz+IxmWIKxes6QiyvP+Ot0Dnfc8vy4h:Uyr0aLhooTJYLSvr4xmf4ZZuOt0DE86

Entry address:
0x30FA

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, 18, 1C, 45, 00, E8, F1, 2B, 00, 00, A3, 64, 1B, 45, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 37, 43, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, DB, 44, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, A0, 47, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9854

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://get1.0111design.info/1435436283/1435436283/...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