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unmask fm.exe

Lior Sela

This is a WebPick installer that bundles (with very minimal user consent) a number of adware browser extensions using the JustPlug.it browser framework. The application unmask fm.exe, “Installer for StarApp” by Lior Sela has been detected as adware by 27 anti-malware scanners. The program is a setup application that uses the WebPick InstalleRex (Tarma) installer. The setup program uses Web-Pick's InstalleRex download manager and installer to bundle potentially unwanted ad-supported software which includes toolbars and browser extensions through a pay-per-install monetization scheme.
Publisher:
StarApp  (signed by Lior Sela)

Product:
StarApp

Description:
Installer for StarApp

Version:
2013.6.19.1256

MD5:
a0884e05ae7f27bc694557ca61d8f215

SHA-1:
0312fd1c9f40fb85537fe1a552be6d80a34ab1ee

SHA-256:
44380fae5778c1cd6f411cf9161a180947da87c111044f3d54e167b5cad4bd3d

Scanner detections:
27 / 68

Status:
Adware

Explanation:
Uses the InstalleRex from WebPick Internet Holdings to install bundled add-ons including toolbars and other web browser extensions.

Analysis date:
5/3/2024 8:47:13 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Adware.Agent
7.1.1

AhnLab V3 Security
Adware/Win32.StartPage
2014.10.16

Avira AntiVirus
ADWARE/InstallRex.Gen
7.11.178.210

avast!
Win32:InstalleRex-Q [PUP]
141003-0

AVG
Skodna.Pick
2015.0.3320

Bkav FE
W32.FamVT.AntiFWK.Trojan
1.3.0.4959

Comodo Security
Application.Win32.InstalleRex.KG
19814

Dr.Web
Adware.Downware.1166
9.0.1.05190

ESET NOD32
Win32/InstalleRex.J potentially unwanted application
7.0.302.0

Fortinet FortiGate
Riskware/InstalleRex
10/15/2014

F-Prot
W32/InstallRex.B.gen
v6.4.7.1.166

G Data
Win32.Application.InstalleRex
14.10.24

K7 AntiVirus
Unwanted-Program
13.183.13690

Kaspersky
not-a-virus:AdWare.Win32.Agent
15.0.0.494

Malwarebytes
PUP.Optional.Installex
v2014.10.15.08

McAfee
PUP-FHQ
5600.6976

NANO AntiVirus
Riskware.Win32.Agent.crfilm
0.28.2.62671

nProtect
Trojan-Clicker/W32.Agent.293200
14.10.15.01

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
Trojan.AntiFW.B5
10.14.14.00

Reason Heuristics
Adware.WebPick.Installer.J
14.10.15.18

Rising Antivirus
PE:Malware.Agent!6.25
23.00.65.141013

Sophos
InstallRex
4.98

SUPERAntiSpyware
PUP.InstallRex/Variant
10297

Vba32 AntiVirus
Downware.TSU
3.12.26.3

VIPRE Antivirus
Threat.4753027
33706

Zillya! Antivirus
Trojan.PEF13C.Win32.362
2.0.0.1956

File size:
286.3 KB (293,200 bytes)

Product version:
1.0.0.1

Copyright:
Copyright © 2012 StarApp

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

Language:
Language Neutral

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

Digital Signature
Signed by:
Lior Sela

Authority:
COMODO CA Limited

Valid from:
1/21/2013 4:00:00 PM

Valid to:
1/22/2014 3:59:59 PM

Subject:
CN=Lior Sela, O=Lior Sela, STREET=Moshe Sharet 46, L=Beer Sheva, S=Beer Sheva, PostalCode=84786, C=IL

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00D39C56B89258E40E737B2AEDA8D3D3E5

File PE Metadata
Compilation timestamp:
3/12/2013 1:51:45 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:krkq6Y0JQBkQRl7174NpNUM+UHs+FAk6dU+h1xSx684Ys05d7PH2:krkq63yRl1uqM+gs+mkuUEaYb4dL2

Entry address:
0x14DB

Entry point:
55, 8B, EC, 81, EC, 2C, 06, 00, 00, 53, 56, 33, DB, 57, 66, 89, 9D, DC, FB, FF, FF, 89, 5D, F4, 89, 5D, FC, FF, 15, 74, 30, 40, 00, A3, 08, 44, 40, 00, FF, 15, 70, 30, 40, 00, 8B, F8, 8D, 45, EC, 50, FF, 15, 6C, 30, 40, 00, FF, 15, 68, 30, 40, 00, 8B, F0, F7, D6, 33, F7, FF, 15, 64, 30, 40, 00, 33, F0, 8B, 45, F0, 33, 45, EC, 68, 04, 01, 00, 00, 33, F0, 8D, 85, D4, F9, FF, FF, 50, 53, FF, 15, 60, 30, 40, 00, 85, C0, 75, 41, FF, 15, 5C, 30, 40, 00, 83, F8, 78, 75, 1A, 68, A8, 32, 40, 00, E8, 43, FB, FF, FF...
 
[+]

Entropy:
7.9549

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

The file unmask fm.exe has been seen being distributed by the following URL.

http://iframe.superfilesdatay.asia/.../jra&ifr=1&click=1

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

TCP (HTTP):
Connects to r1.stylezip.info  (54.186.255.26:80)

TCP (HTTP):
Connects to c1.stylezip.info  (54.186.255.26:80)

 
http://c1.stylezip.info/?step_id=1&installer_id=11982630&publisher_id=198&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=35947890&external_id=0&session_id=71895780&hardware_id=83878410&installer_file_name=unmask+fm

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