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setup.exe

Yordan Damyanov

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 setup.exe by Yordan Damyanov 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 an Internet Explorer cache folder. The file has been seen being downloaded from www.adnetwork100.info. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
Yordan Damyanov  (signed and verified)

MD5:
f2d99ff7d11be9740194f68447f9e04d

SHA-1:
84c47b91dc8848074f939cef6ceefde60c933874

SHA-256:
386a010e59cc26a944d79eb2358606cc234a8220a279aba3f35ce50fbd550b98

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 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:
5/8/2024 10:45:12 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick (M)
16.7.27.17

File size:
1.6 MB (1,666,824 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
WebPick InstalleRex

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\setup.exe

Digital Signature
Signed by:
Yordan Damyanov

Authority:
COMODO CA Limited

Valid from:
10/7/2013 3:00:00 AM

Valid to:
10/8/2015 2:59:59 AM

Subject:
CN=Yordan Damyanov, O=Yordan Damyanov, STREET=19 Dobri Voinikov Str, L=Sofia, S=Sofia, PostalCode=1000, C=BG

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

Serial number:
00FEEF0D77D0AC7E55D4E7707B384AC901

File PE Metadata
Compilation timestamp:
12/11/2013 1:06:05 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
49152:v83WCHoqRMIs8l+rz6bZ/fnw6RscHDEMXij:vaW8Rfzl+X6bZ/vvR5Dnyj

Entry address:
0x562F

Entry point:
E8, 41, 5C, 00, 00, E9, 89, FE, FF, FF, 8B, FF, 55, 8B, EC, 81, EC, 28, 03, 00, 00, A3, 48, 94, 41, 00, 89, 0D, 44, 94, 41, 00, 89, 15, 40, 94, 41, 00, 89, 1D, 3C, 94, 41, 00, 89, 35, 38, 94, 41, 00, 89, 3D, 34, 94, 41, 00, 66, 8C, 15, 60, 94, 41, 00, 66, 8C, 0D, 54, 94, 41, 00, 66, 8C, 1D, 30, 94, 41, 00, 66, 8C, 05, 2C, 94, 41, 00, 66, 8C, 25, 28, 94, 41, 00, 66, 8C, 2D, 24, 94, 41, 00, 9C, 8F, 05, 58, 94, 41, 00, 8B, 45, 00, A3, 4C, 94, 41, 00, 8B, 45, 04, A3, 50, 94, 41, 00, 8D, 45, 08, A3, 5C, 94, 41...
 
[+]

Entropy:
7.8958  (probably packed)

Code size:
75 KB (76,800 bytes)

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

http://www.adnetwork100.info/.../download.php?wti=&src=122&sta=20s2mA4MY3oA2yd91BgpbM1vR3h9000DDORAA&clickid=20s2mA4MY3oA2yd91BgpbM1vR3h9000DDORAA

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=283984086&publisher_id=839&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=851952258&external_id=0&session_id=1703904516&hardware_id=1987888602&installer_file_name=setup

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