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 28 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.
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Publisher:
Kiril Klimko  (signed and verified)

MD5:
a74e13217a65b7b2b57862eff00451f8

SHA-1:
55e94e7a8b718ac67530b2ead04c55edd897fb18

SHA-256:
d142201a21272c7c6673858a47329ad1c0f324ffab435abfb44c81c4f75ba00d

Scanner detections:
28 / 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:
12/10/2016 3:38:20 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Adware.Dropper.101
970

Agnitum Outpost
PUA.MultiPlug
7.1.1

AhnLab V3 Security
Adware/Win32.Agent
2014.06.11

Avira AntiVirus
TR/Graftor.141601.A
7.11.154.46

Antiy Labs AVL
Trojan/Win32.SGeneric
1.0.0.1

avast!
Win32:MultiPlug-AC [PUP]
140608-0

AVG
Adware Generic5.APLW
2014.0.3955

Bitdefender
Gen:Variant.Adware.Dropper.101
1.0.20.805

Comodo Security
Application.Win32.Multiplug.R
18499

Dr.Web
Trojan.Crossrider.5139
9.0.1.05190

Emsisoft Anti-Malware
Gen:Variant.Adware.Dropper.101
8.14.06.10.10

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
11.2014-10-06_3

G Data
Gen:Variant.Adware.Dropper.101
14.6.24

IKARUS anti.virus
Win32.SuspectCrc
t3scan.1.6.1.0

Jiangmin
AdWare/JS.z
KV140610

K7 AntiVirus
Unwanted-Program
13.1712358

K7 Gateway Antivirus
Trojan
13.1712358

Malwarebytes
PUP.Optional.MultiPlug.A
v2014.06.10.10

McAfee
PUP-FID!A74E13217A65
5600.7104

McAfee Web Gateway
Heuristic.BehavesLike.Win32.Suspicious.D
7.7104

MicroWorld eScan
Gen:Variant.Adware.Dropper.101
15.0.0.483

NANO AntiVirus
Trojan.Win32.Crossrider.cvopfn
0.28.0.60253

Panda Antivirus
Trj/Genetic.gen
14.06.10.10

Reason Heuristics
PUP.Installer.KirilKlimko.J
14.6.10.10

Rising Antivirus
PE:Malware.MultiPlug!6.13CF
23.00.65.14608

VIPRE Antivirus
Threat.4786450
30086

Remove ext_setup.exe - Powered by Reason Core Security
File size:
656.6 KB (672,368 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:

Authority:
COMODO CA Limited

Valid from:
9/3/2013 8:00:00 AM

Valid to:
9/4/2014 7:59:59 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:
3/16/2014 8:34:27 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
12288:h/36Cpd8FZT33KdPYAANGAPcC+hyzqVY//ETV/2vyw7TkJIYbzRF4VoOHmM:h/3ZkZTKdPFANhKJ7KOb9M

Entry address:
0x10A4B

Entry point:
E8, 3E, 4A, 00, 00, E9, 00, 00, 00, 00, 6A, 14, 68, B8, 21, 42, 00, E8, 1F, 21, 00, 00, E8, E0, 07, 00, 00, 0F, B7, F0, 6A, 02, E8, D1, 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, 90, 37, 00, 00, 85, C0, 75, 08, 6A, 1C, E8, DC, 00, 00, 00, 59, E8...
 
[+]

Entropy:
7.7590  (probably packed)

Code size:
103 KB (105,472 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=6386102&publisher_id=386&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=19158306&external_id=0&session_id=38316612&hardware_id=44702714&installer_file_name=ext_setup

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