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ext_setup.exe

Kiril Klimko

The is the installer for the WebPick InstalleRex download manager which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed without consent. The application ext_setup.exe by Kiril Klimko has been detected as adware by 29 anti-malware scanners. The program is a setup application that uses the WebPick InstalleRex installer. It is built using the Crossrider cross-browser extension platform. While the file utilizes the Crossrider framework and delivery services, it is not owned by Crossrider.
Publisher:
Kiril Klimko  (signed and verified)

MD5:
894d13a6cf4507948696421469fdcc66

SHA-1:
e597af0d3cdf979686f3aa048b057a22636c16b9

SHA-256:
a98bfed0693f2785fc8868b4ecbb88add8e1b4b97d4ecd5fc6660f855cf380ef

Scanner detections:
29 / 68

Status:
Adware

Explanation:
The software may change the browser's home page and search provider settings as well as display advertisements.

Description:
This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
4/23/2024 10:49:58 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Adware.Dropper.101
885

Agnitum Outpost
PUA.MultiPlug
7.1.1

AhnLab V3 Security
Adware/Win32.Agent
2014.09.03

Avira AntiVirus
TR/Graftor.141601.A
7.11.170.158

avast!
Win32:Adware-gen [Adw]
140813-1

AVG
Adware Generic5.AQFW
2014.0.4015

Bitdefender
Gen:Variant.Adware.Dropper.101
1.0.20.1230

Clam AntiVirus
Win.Adware.Agent-6684
0.98/19322

Comodo Security
Application.Win32.Multiplug.GETF
19403

Dr.Web
Trojan.Crossrider.5139
9.0.1.05190

Emsisoft Anti-Malware
Gen:Variant.Adware.Dropper.101
9.0.0.4324

ESET NOD32
Win32/AdWare.MultiPlug.R application
7.0.302.0

F-Prot
W32/MultiPlug.C.gen
v6.4.7.1.166

F-Secure
Gen:Variant.Adware.Dropper.101
11.2014-03-09_4

G Data
Gen:Variant.Adware.Dropper.101
14.9.24

IKARUS anti.virus
Win32.SuspectCrc
t3scan.1.7.5.0

K7 AntiVirus
Adware
13.183.13247

Kaspersky
not-a-virus:HEUR:AdWare.Win32.Agent
14.0.0.3309

Malwarebytes
PUP.Optional.MultiPlug
v2014.09.03.02

McAfee
PUP-FID
5600.7019

MicroWorld eScan
Gen:Variant.Adware.Dropper.101
15.0.0.738

NANO AntiVirus
Trojan.Win32.Crossrider.cvztoy
0.28.2.61942

Panda Antivirus
Trj/Genetic.gen
14.09.03.02

Reason Heuristics
PUP.Installer.KirilKlimko.J
14.9.2.17

Rising Antivirus
PE:Malware.MultiPlug!6.15B6
23.00.65.14901

Sophos
MultiPlug
4.98

Vba32 AntiVirus
AdWare.BHO
3.12.26.3

VIPRE Antivirus
Threat.4786450
32210

Zillya! Antivirus
Adware.Agent.Win32.9601
2.0.0.1909

File size:
692.2 KB (708,784 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
WebPick InstalleRex

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\addons\ext_setup.exe

Digital Signature
Signed by:
Kiril Klimko

Authority:
COMODO CA Limited

Valid from:
9/3/2013 1:00:00 AM

Valid to:
9/4/2014 12:59:59 AM

Subject:
CN=Kiril Klimko, O=Kiril Klimko, STREET=Perova 21, L=Kiev, S=Kiev, PostalCode=02125, C=UA

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

Serial number:
4F8445DA07CAF9C24D869920925BA182

File PE Metadata
Compilation timestamp:
3/28/2014 11:18:13 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
12288:TNnHs4zZ9AeZMY10I2MTCsNTcCITj7yqMChtDVhbIKTUOj0HX:TN7ZpZFp2MThFdInxhtZh5TU203

Entry address:
0x10B9B

Entry point:
E8, CE, 49, 00, 00, E9, 00, 00, 00, 00, 6A, 14, 68, A8, 21, 42, 00, E8, AF, 20, 00, 00, E8, E0, 07, 00, 00, 0F, B7, F0, 6A, 02, E8, 61, 49, 00, 00, 59, B8, 4D, 5A, 00, 00, 66, 39, 05, 00, 00, 40, 00, 74, 04, 33, DB, EB, 33, A1, 3C, 00, 40, 00, 81, B8, 00, 00, 40, 00, 50, 45, 00, 00, 75, EB, B9, 0B, 01, 00, 00, 66, 39, 88, 18, 00, 40, 00, 75, DD, 33, DB, 83, B8, 74, 00, 40, 00, 0E, 76, 09, 39, 98, E8, 00, 40, 00, 0F, 95, C3, 89, 5D, E4, E8, 20, 37, 00, 00, 85, C0, 75, 08, 6A, 1C, E8, DC, 00, 00, 00, 59, E8...
 
[+]

Entropy:
7.7825  (probably packed)

Code size:
103.5 KB (105,984 bytes)

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=9693708&publisher_id=693&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=29081124&external_id=0&session_id=58162248&hardware_id=67855956&installer_file_name=ext_setup

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