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firefox setup stub 44.0b2.exe

7-Zip

Igor Pavlov

The executable firefox setup stub 44.0b2.exe has been detected as malware by 11 anti-virus scanners. This is a self-extracting archive and installer, however the file is not signed with an authenticode signature from a trusted source. Infected by an entry-point obscuring polymorphic file infector which will create a peer-to-peer botnet and receives URLs of additional files to download. The file has been seen being downloaded from download.mozilla.org.
Publisher:
Igor Pavlov

Product:
7-Zip

Description:
7z Setup SFX

Version:
4.42

MD5:
5f5c8cd81c864c4017f315a52a81a337

SHA-1:
e6fbb9504e414263220a945285673e79a07fd88b

SHA-256:
e3e4c5f87f016158ba634af92ab2be36a9fd4c6ee3c975a831febf6b9079b728

Scanner detections:
11 / 68

Status:
File is infected by a Virus

Explanation:
The file is infected by a polymorphic file infector virus.

Analysis date:
4/25/2024 2:30:14 PM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:SaliCode
160118-1

AVG
Win32/Sality
2015.0.4489

Dr.Web
Win32.Sector.30
9.0.1.05190

Emsisoft Anti-Malware
Win32.Sality
10.0.0.5366

ESET NOD32
Win32/Sality.NBA virus
7.0.302.0

F-Prot
W32/Sality.gen2
4.6.5.141

Kaspersky
Virus.Win32.Sality
15.0.0.562

McAfee
Virus.W32/Sality.gen.z
18.0.204.0

Microsoft Security Essentials
Threat.Undefined
1.213.4224.0

Norman
Win32.Sality.3
11.01.2016 17:30:26

VIPRE Antivirus
Threat.4721115
46444

File size:
310.9 KB (318,344 bytes)

Product version:
4.42

Copyright:
Copyright (c) 1999-2006 Igor Pavlov

Original file name:
7zS.sfx.exe

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\users\{user}\downloads\firefox setup stub 44.0b2.exe

File PE Metadata
Compilation timestamp:
4/17/2014 10:59:40 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:lvc6rB5DbBU0vD+fXPdAAGYT8ZYe7n5C4Gr4EVV6CROnf3AfIiowTDbz6uZc:lZDbBU0SfXPOAGYBQ5Cl4EVcVnfoIiod

Entry address:
0x21E30

Entry point:
0F, BE, D8, C7, C0, AD, CB, 46, 74, 52, 85, F3, F6, C5, 37, 0F, AF, F8, 21, FA, C7, C5, F6, F9, 47, 6B, F6, C6, B4, 3D, 3F, 93, 00, 00, 81, EE, E4, 07, 35, 46, 51, 51, 0F, BF, DB, 0F, B6, C5, 18, EC, 0F, B7, F9, 8D, 35, 0F, 04, 0C, 02, 89, D7, 8D, 05, D7, 8C, 6E, 4F, E8, 2E, 00, 00, 00, 3D, 54, 13, 00, 00, 76, 06, FE, CA, 84, DA, B2, EF, FF, C5, F2, 85, C0, 77, 08, 69, C8, 7B, 58, 99, 6F, 89, DB, 81, C6, 54, FA, FF, FF, F3, B8, 91, 7E, CB, 71, 81, C6, 3F, 0B, 00, 00, F6, C1, A5, 47, 84, E9, F6, C1, 45, 81...
 
[+]

Entropy:
7.9219  (probably packed)

Code size:
40 KB (40,960 bytes)

The file firefox setup stub 44.0b2.exe has been seen being distributed by the following URL.

https://download.mozilla.org/?product=firefox-beta-stub&os=win&lang=en-US

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