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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. The installer is marketed through download protals and search ads as the free Mozilla Firefox web browser but will also install additional software offers which include adware, PUPs and browser toolbars.
Publisher:
LDEID  (signed by YEs Apps)

Product:
LDEID

Version:
2872.15627.859.1862

MD5:
c3dec09632d9bf8899e039e537b5c9da

SHA-1:
a0621ad121834555db242c30691e540ad420372c

SHA-256:
46079596a6e77788c18c225d7e25a12148d79a1d785aedd5df3892c6eb445343

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 an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
11/5/2024 2:51:50 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse (M)
16.7.22.6

File size:
734 KB (751,568 bytes)

Product version:
2872.15627.859.1862

Copyright:
LDEID

Trademarks:
LDEID

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):
12288:5WmR4cnO5OkRtbGOoNPLwJ+S0jRr1bKmae5U+KmOvP+Ot0Dnfc8vy4h:5WmR4IO5VRRGOo5LwoS0tr1b2hjuOt0s

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:
7.9857

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/.../1435436286/1435436286?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