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ext_setup.exe

Dmitry Volonov

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 Dmitry Volonov 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. The file has been seen being downloaded from getwinnermyall.ru. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
Dmitry Volonov  (signed and verified)

MD5:
65baac69563b38190dfefeb48f105016

SHA-1:
73c24fbd9fded7f94472841cfec5badaf3241867

SHA-256:
44108b5d09f724d51d9b6e19454c0ccebd139e3cb6ae3346bbeb18ac5794020b

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 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:
4/26/2024 3:52:11 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick.DmitryVolonov.Bundler (M)
16.2.10.19

File size:
632.8 KB (648,008 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:
Dmitry Volonov

Authority:
COMODO CA Limited

Valid from:
9/27/2013 7:00:00 AM

Valid to:
9/28/2014 6:59:59 AM

Subject:
CN=Dmitry Volonov, O=Dmitry Volonov, STREET=Lepse 14, L=Kiev, S=Kiev, PostalCode=03065, C=UA

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

Serial number:
3D57C4A60FE2C6814E02CB06FE8290BF

File PE Metadata
Compilation timestamp:
12/2/2013 5:08:12 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:4hSWPnEjDFxi9Z7djlN+p1VD9N8LUmd5hE21NI2VxWHycUWahjiKp:4h4Ti9ZxmhZWa2DDVxyycUW0

Entry address:
0xF6E7

Entry point:
E8, 38, 3F, 00, 00, E9, 89, FE, FF, FF, 8B, FF, 55, 8B, EC, 8B, 45, 08, 33, C9, 3B, 04, CD, 28, E0, 41, 00, 74, 13, 41, 83, F9, 2D, 72, F1, 8D, 48, ED, 83, F9, 11, 77, 0E, 6A, 0D, 58, 5D, C3, 8B, 04, CD, 2C, E0, 41, 00, 5D, C3, 05, 44, FF, FF, FF, 6A, 0E, 59, 3B, C8, 1B, C0, 23, C1, 83, C0, 08, 5D, C3, E8, DC, 07, 00, 00, 85, C0, 75, 06, B8, 90, E1, 41, 00, C3, 83, C0, 08, C3, E8, C9, 07, 00, 00, 85, C0, 75, 06, B8, 94, E1, 41, 00, C3, 83, C0, 0C, C3, 8B, FF, 55, 8B, EC, 56, E8, E2, FF, FF, FF, 8B, 4D, 08...
 
[+]

Code size:
92 KB (94,208 bytes)

The file ext_setup.exe has been seen being distributed by the following URL.

http://getwinnermyall.ru/?e=sfkp&publisher=1928&dd=4&country=ID&ind=6935105687549874439&exid=1386749194296593804&ssd=13355179621072530132&hid=10529575794898777135&osid=601&channel=0&sfx=1&category_name=%SurfKeepKeys_CategoryName%&install_date=20121211

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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