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ext_setup.exe

Anton Kulichenko

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 Anton Kulichenko 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 toolkit. While the file utilizes the Crossrider framework and delivery services, it is not owned by Crossrider.
Publisher:
Anton Kulichenko  (signed and verified)

MD5:
938ffa69ce8bc70c0c8650f393e27c00

SHA-1:
abe69d922efa7b7a468820e097e827637e3cd83f

SHA-256:
695295179d4570be97e6b6100d3c2762140abdf1ecdc1ca030f60fc297936ab3

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 an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
4/27/2024 2:01:35 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Adware.Dropper.101
827

Agnitum Outpost
PUA.MultiPlug
7.1.1

AhnLab V3 Security
Adware/Win32.BHO
2014.11.01

Avira AntiVirus
TR/Graftor.141601.A
7.11.182.130

avast!
Win32:PUP-gen [PUP]
2014.9-141031

AVG
Generic_r
2015.0.3305

Bitdefender
Gen:Variant.Adware.Dropper.101
1.0.20.1520

Clam AntiVirus
Win.Adware.Agent-6680
0.98/21411

Comodo Security
Application.Win32.Multiplug.GETF
19953

Dr.Web
Trojan.Crossrider.4243
9.0.1.0304

Emsisoft Anti-Malware
Gen:Variant.Adware.Dropper.101
8.14.10.31.08

ESET NOD32
Win32/AdWare.MultiPlug (variant)
8.10649

Fortinet FortiGate
Riskware/Generic.AC.1814531
10/31/2014

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

F-Secure
Gen:Variant.Adware.Dropper.101
11.2014-31-10_6

G Data
Gen:Variant.Adware.Dropper.101
14.10.24

IKARUS anti.virus
Win32.SuspectCrc
t3scan.1.8.3.0

K7 AntiVirus
Unwanted-Program
13.185.13853

Kaspersky
not-a-virus:HEUR:AdWare.Win32.Agent
14.0.0.3018

McAfee
PUP-FID
5600.6961

MicroWorld eScan
Gen:Variant.Adware.Dropper.101
15.0.0.912

NANO AntiVirus
Trojan.Win32.Crossrider.curnem
0.28.6.62995

Quick Heal
AdWare.MultiPlag.ace
10.14.14.00

Reason Heuristics
PUP.Installer.AntonKulichenko.J
14.10.31.7

Rising Antivirus
PE:Malware.MultiPlug!6.13CF
23.00.65.141029

Sophos
MultiPlug
4.98

Vba32 AntiVirus
AdWare.Win64.MultiPlag
3.12.26.3

VIPRE Antivirus
Trojan.Win32.Generic
34392

Zillya! Antivirus
Trojan.Black.Win32.16992
2.0.0.1973

File size:
1.5 MB (1,619,608 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:
Anton Kulichenko

Authority:
COMODO CA Limited

Valid from:
12/3/2013 5:30:00 AM

Valid to:
12/4/2014 5:29:59 AM

Subject:
CN=Anton Kulichenko, O=Anton Kulichenko, STREET=Engineering 7, L=Kiev, S=Kiev, PostalCode=01013, C=UA

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

Serial number:
00E406368A873FE17B8962DA09A05F7B2E

File PE Metadata
Compilation timestamp:
3/3/2014 5:57:10 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
24576:2oiZSIJ70yMoViipkWzWoZzVeuKd2JiSpczVTr5aCiWPdDJdekRMsK0o/gk1:WZ170yM10zWo6d2oVTNQWdjhKD1

Entry address:
0x10BAB

Entry point:
E8, BE, 4A, 00, 00, E9, 00, 00, 00, 00, 6A, 14, 68, 88, 21, 42, 00, E8, 9F, 21, 00, 00, E8, E0, 07, 00, 00, 0F, B7, F0, 6A, 02, E8, 51, 4A, 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, 10, 38, 00, 00, 85, C0, 75, 08, 6A, 1C, E8, DC, 00, 00, 00, 59, E8...
 
[+]

Entropy:
7.9164  (probably packed)

Code size:
103.5 KB (105,984 bytes)

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

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

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