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ext_setup.exe

Sergei Ivanovich Drozdov

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 Sergei Ivanovich Drozdov has been detected as adware by 23 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:
Sergei Ivanovich Drozdov  (signed and verified)

MD5:
8d7d812fd83a12e6e478318f5544f87f

SHA-1:
7b37f8ebdeeadb91793f7fb8d52dbbf06883705b

SHA-256:
5f3ac055e90fbe12fd2d71c8e8e1ea25ed3daee16c28840a7cf2b214915accd7

Scanner detections:
23 / 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:
4/24/2024 2:38:41 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Adware.Dropper.101
1023

Avira AntiVirus
ADWARE/Adware.Gen7
7.11.144.32

avast!
Win32:MultiPlug-AI [PUP]
2014.9-140418

AVG
Generic_r
2015.0.3501

Bitdefender
Gen:Variant.Adware.Dropper.101
1.0.20.540

Comodo Security
Application.Win32.Multiplug.R
18124

Dr.Web
Trojan.Crossrider.4243
9.0.1.0108

Emsisoft Anti-Malware
Gen:Variant.Adware.Dropper.101
8.14.04.18.03

ESET NOD32
Win32/AdWare.MultiPlug (variant)
8.9692

F-Secure
Gen:Variant.Adware.Dropper.101
11.2014-18-04_6

G Data
Gen:Variant.Adware.Dropper.101
14.4.24

IKARUS anti.virus
Win32.SuspectCrc
t3scan.1.6.1.0

Kaspersky
not-a-virus:AdWare.Win32.MultiPlug
14.0.0.3999

Malwarebytes
PUP.Optional.MultiPlug.A
v2014.04.18.03

McAfee
PUP-FID!8D7D812FD83A
5600.7157

MicroWorld eScan
Gen:Variant.Adware.Dropper.101
15.0.0.324

NANO AntiVirus
Trojan.Win32.Crossrider.cuwgpc
0.28.0.59288

Panda Antivirus
Trj/Genetic.gen
14.04.18.03

Qihoo 360 Security
Malware.QVM10.Gen
1.0.0.1015

Reason Heuristics
PUP.Installer.SergeiIvanovichDrozdov.J
14.4.18.1

Rising Antivirus
PE:Malware.MultiPlug!6.13CF
23.00.65.14416

Sophos
MultiPlug
4.98

VIPRE Antivirus
Trojan.Win32.Generic
28346

File size:
1.5 MB (1,619,528 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:
Sergei Ivanovich Drozdov

Authority:
Unizeto Technologies S.A.

Valid from:
1/8/2014 10:24:34 AM

Valid to:
1/8/2015 10:24:34 AM

Subject:
E=drozdov54@hotmail.com, CN="Open Source Developer, Sergei Ivanovich Drozdov", OU=Sedro Soft, O=Sergei Ivanovich Drozdov, C=RU

Issuer:
CN=Certum Level III CA, OU=Certum Certification Authority, O=Unizeto Technologies S.A., C=PL

Serial number:
4E05AFB21C1318DB8A2C0669760C9050

File PE Metadata
Compilation timestamp:
3/3/2014 2:30:11 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
49152:oZpJWWFoaRDGSLxEor2zTzGPNsSF9w8MZBSJ:0Wqo+GSLSoyGPqm9JJ

Entry address:
0x109DB

Entry point:
E8, 4E, 4A, 00, 00, E9, 00, 00, 00, 00, 6A, 14, 68, E0, 21, 42, 00, E8, 2F, 21, 00, 00, E8, E0, 07, 00, 00, 0F, B7, F0, 6A, 02, E8, E1, 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, A0, 37, 00, 00, 85, C0, 75, 08, 6A, 1C, E8, DC, 00, 00, 00, 59, E8...
 
[+]

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=4068862&publisher_id=068&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=12206586&external_id=0&session_id=24413172&hardware_id=28482034&installer_file_name=ext_setup

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