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firefox.exe

The application firefox.exe has been detected as a potentially unwanted program by 4 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer, however the file is not signed with an authenticode signature from a trusted source. The setup routine uses the RevenYou.Com Pay Per Install platform (OutBrowse) which bundles additional software offers inclduing toolbars, extensions, PC utilities as well as other PUPs. The file has been seen being downloaded from dl.ez-downlaod.com.
MD5:
e51bcfb65752601a5becc9949dd5aab5

SHA-1:
6048a8d9e7b31e9432c0abd1a258506bed900a38

SHA-256:
03a61003010dc9f7dc4cdd9d4597e13f0f07e0c049312dbc491fe3c4e4334a54

Scanner detections:
4 / 68

Status:
Potentially unwanted

Explanation:
Bundles additional adware offers during download and installation using the OutBrowse installer.

Analysis date:
1/12/2025 4:30:07 PM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:PUP-gen [PUP]
160326-0

ESET NOD32
Win32/OutBrowse.L potentially unwanted application
8.0.319.0

McAfee
Program.Adware-OutBrowse
18.0.204.0

Reason Heuristics
PUP.OutBrowse (M)
16.4.25.12

File size:
101.9 KB (104,394 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\downloads\firefox.exe

File PE Metadata
Compilation timestamp:
12/5/2009 11:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
3072:6gXdZt9P6D3XJuCFe5Ky/9XO3jR0eWSzUu/0Wu:6e34dFeUQ9OzRgW/cR

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, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
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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://dl.ez-downlaod.com/.../Get?p=1955&d=3208&l=5187&n=1&productname=Firefox&d1=12&d2=1&d3=5&d4=6&d5=00000000&filename=Firefox

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