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mozilla-firefox.exe

Gufotig

UpdateStar GmbH

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application mozilla-firefox.exe, “Gufotig Setup ” by UpdateStar GmbH has been detected as a potentially unwanted program 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 installCore 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:
Mog   (signed by UpdateStar GmbH)

Product:
Gufotig

Description:
Gufotig Setup

Version:
4.3.5.6

MD5:
0ab7f06a7d6ade7199f28eaa5db2a1be

SHA-1:
01b697d02376ca6ce16950b6cc0316c073bdfe2c

SHA-256:
228310e31fbde9c6a43d5615def4c65a81d9aedcbbf6f75a0fdf782eac3f1e2d

Scanner detections:
1 / 68

Status:
Potentially unwanted

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 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
12/26/2024 8:35:32 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore.UpdateSt.Installer (M)
16.3.21.1

File size:
1 MB (1,053,208 bytes)

Product version:
2.4

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

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

Digital Signature
Signed by:
UpdateStar GmbH

Authority:
GlobalSign nv-sa

Valid from:
1/25/2016 11:35:00 AM

Valid to:
3/23/2017 3:24:09 PM

Subject:
CN=UpdateStar GmbH, O=UpdateStar GmbH, L=Berlin, S=Berlin, C=DE

Issuer:
CN=GlobalSign CodeSigning CA - SHA256 - G2, O=GlobalSign nv-sa, C=BE

Serial number:
1121C7585A2F5B2218EC6B36D472BA6496D8

File PE Metadata
Compilation timestamp:
6/20/1992 12:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:eQkKEY7qm/1wv048SkSagBSufwL1yKma/ABEbqiomQnuubfVYaatG:eXK7qm/is48aagcLkKma/ABELomYuKtO

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, 53, C9, FF, FF, E8, 9A, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
37 KB (37,888 bytes)

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

http://www.heartrepositoryclear.com/c?x=YCVoQvYT4 fHlwHzP0JCRqSLEJNTv13gwIikHHGpWWM=&c=r5IGnA0Vs8ZsmZ6GPIvQob1UpFxV69jxmRGNM28GulZ11TSKaPHzJfnnyfMLb8MUf8ZEiaEqyOxYccCuW3QNhOkANY0jpwByWAgQBVSA5XE3ehhWQbdHEoiU3bEFBsuw&downloadAs=mozilla-firefox.exe&fallback_url=https://download-installer.cdn.mozilla.net/pub/firefox/releases/38.0/win32/.../Firefox Setup 38.0.exe

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