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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 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the WebPick InstalleRex installer. It is also typically executed from the user's temporary directory. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
Sergei Ivanovich Drozdov  (signed and verified)

MD5:
a439a9430bca86d4f19c5e6a2c2ae2b4

SHA-1:
860ba6cc71c3c0e3c06231ca004c2c20aa91d6c0

SHA-256:
1f6b453d4d9abd79cb104c786828650d8d7d403513834d744850842c6d7798f0

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Description:
This 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
4/19/2024 5:45:08 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick.SergeiIvanovichDrozdov.Bundler (M)
16.2.14.21

File size:
1.5 MB (1,617,416 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 3:24:34 PM

Valid to:
1/8/2015 3:24:34 PM

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 7:30:11 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
49152:gZprod8VV/otxOaGsID/qlIQYyQoSP81d2Qd:aoMRAMaGkGQYlop1gc

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 communication in live environments.

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

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