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icreinstall_firefox.exe

The installer utilizes InstallCore which may bundle about 3-4 offers for various ad-supported toolbars, extensions and utilities. The application icreinstall_firefox.exe has been detected as adware by 20 anti-malware scanners. The program is a setup application that uses the installCore installer, however the file is not signed with an authenticode signature from a trusted source. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. 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.
MD5:
97e9faa7cb0d346f3a80ef0c21a50e15

SHA-1:
86ba097e747685aa07df431149b3464b5e335184

SHA-256:
7b77ada53be5581146c64e2e32342c813f0d15d4e5bfccbc669347a574046452

Scanner detections:
20 / 68

Status:
Adware

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

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:
4/19/2024 7:55:22 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.InstallCore
7.1.1

Avira AntiVirus
PUA/InstallCore.Gen7
7.11.217.198

Comodo Security
Application.Win32.Agent.AP
21436

Dr.Web
Trojan.Packed.24524
9.0.1.0200

ESET NOD32
Win32/InstallCore.BY potentially unwanted (variant)
9.11329

Fortinet FortiGate
Riskware/InstallCore
7/19/2015

F-Prot
W32/InstallCore.R3.gen
v6.4.7.1.166

G Data
Win32.Application.InstallCore
15.7.25

K7 AntiVirus
Unwanted-Program
13.201.15277

Malwarebytes
PUP.Optional.Freemium.A
v2015.07.19.06

McAfee
Artemis!97E9FAA7CB0D
5600.6700

NANO AntiVirus
Riskware.Win32.InstallCore.dfgmnd
0.30.0.296

Panda Antivirus
PUP/MultiToolbar.A
15.07.19.06

Reason Heuristics
PUP.InstallCore (M)
15.7.19.6

Rising Antivirus
PE:Malware.XPACK-LNR/Heur!1.5594
23.00.65.15717

Sophos
Install Core Click run software
4.98

Trend Micro House Call
TROJ_GEN.R047C0ELS14
7.2.200

Trend Micro
TROJ_GEN.R047C0ELS14
10.465.19

Vba32 AntiVirus
Downware.InstallCore
3.12.26.3

VIPRE Antivirus
InstallCore
38484

File size:
584.4 KB (598,424 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Common path:
C:\users\{user}\appdata\local\temp\icreinstall_firefox.exe

File PE Metadata
Compilation timestamp:
6/19/1992 6:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:DMJfsGGZ/tEQ1B/l8CRi5ebHPEPJzWU4BfqZrvj3SGZGYzsB8HSm:DMJfsX/6Q14v+HeJyUAqZDLSGQYAQ

Entry address:
0x98CC

Entry point:
55, 8B, EC, 83, C4, CC, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, FA, 97, FF, FF, E8, 01, AA, FF, FF, E8, 2C, CC, FF, FF, E8, 73, CC, FF, FF, E8, 0A, F3, FF, FF, E8, 71, F4, FF, FF, 33, C0, 55, 68, 76, 9F, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 2C, 9F, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, B0, 40, 00, E8, 9B, FE, FF, FF, E8, 26, FA, FF, FF, 8D, 55, F0, 33, C0, E8, E0, D0, FF, FF, 8B, 55, F0, B8, D8, BD, 40, 00, E8, AB, 98, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, D8, BD, 40, 00, B2, 01, B8...
 
[+]

Entropy:
7.8084

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

Code size:
36 KB (36,864 bytes)

The file icreinstall_firefox.exe has been seen being distributed by the following 2 URLs.

http://www.down4load.com/de/downloads/.../Firefox.exe

http://www.down4load.com/en/downloads/.../Firefox.exe

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to os.solvefile.com  (207.189.109.121:80)

TCP (HTTP):
Connects to cdnus.solvefile.com  (207.189.109.121:80)

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