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firefoxsetup.exe

Firefox

OOO Yandex

The application firefoxsetup.exe by OOO Yandex has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a self-extracting archive and installer and has been known to bundle potentially unwanted software. The file has been seen being downloaded from downloader.yandex.net.cache-spb02.cdn.yandex.net and multiple other hosts.
Publisher:
Mozilla  (signed by OOO Yandex)

Product:
Firefox

Version:
4.42

MD5:
5fdf350b4277e678d231c4cb6770e4e8

SHA-1:
b525a01f45fd7439fa117f3ca339ca354a88bb45

SHA-256:
2c10ca38e65b8cf7b42ff2c6b74c989f05e0b099a9d1eefd7a81ecf746e08dd0

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
5/18/2024 3:18:28 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yandex.Installer.Installer.Meta (L)
15.10.10.18

File size:
25.1 MB (26,271,976 bytes)

Product version:
4.42

Copyright:
Mozilla

Original file name:
7zS.sfx.exe

File type:
Executable application (Win32 EXE)

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

Digital Signature
Signed by:
OOO Yandex

Authority:
VeriSign, Inc.

Valid from:
2/5/2010 4:00:00 AM

Valid to:
2/5/2013 3:59:59 AM

Subject:
CN=OOO Yandex, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=OOO Yandex, L=Moscow, S=Moscow, C=RU

Issuer:
CN=VeriSign Class 3 Code Signing 2009-2 CA, OU=Terms of use at https://www.verisign.com/rpa (c)09, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
3769815A97A8FB411E005282B37878E3

File PE Metadata
Compilation timestamp:
8/16/2006 2:27:50 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
393216:6FCaeqHiRVufd3Ndf+MkbdIMLz3lXTMlzEk0pE958/havb3BbnCZWW++o/hji2:cCa3iRyPdGxbXNKpuNBo/hz

Entry address:
0x11F3F

Entry point:
55, 8B, EC, 6A, FF, 68, 10, 49, 41, 00, 68, A4, 20, 41, 00, 64, A1, 00, 00, 00, 00, 50, 64, 89, 25, 00, 00, 00, 00, 83, EC, 68, 53, 56, 57, 89, 65, E8, 33, DB, 89, 5D, FC, 6A, 02, FF, 15, EC, 40, 41, 00, 59, 83, 0D, 9C, 8A, 41, 00, FF, 83, 0D, A0, 8A, 41, 00, FF, FF, 15, F0, 40, 41, 00, 8B, 0D, 94, 8A, 41, 00, 89, 08, FF, 15, F4, 40, 41, 00, 8B, 0D, 90, 8A, 41, 00, 89, 08, A1, F8, 40, 41, 00, 8B, 00, A3, 98, 8A, 41, 00, E8, 20, 01, 00, 00, 39, 1D, 40, 86, 41, 00, 75, 0C, 68, F6, FA, 40, 00, FF, 15, FC, 40...
 
[+]

Entropy:
7.9998

Developed / compiled with:
Microsoft Visual C++ v6.0

Code size:
74.5 KB (76,288 bytes)

The file firefoxsetup.exe has been seen being distributed by the following 3 URLs.

http://downloader.yandex.net.cache-spb02.cdn.yandex.net/.../FirefoxSetup.exe

http://downloader.yandex.net.cache-default04g.cdn.yandex.net/.../FirefoxSetup.exe

http://downloader.yandex.net.cache-default06f.cdn.yandex.net/.../FirefoxSetup.exe

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