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ytab_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 ytab_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. 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:
e9af8e6dfcde0664abee038dd6549625

SHA-1:
e3b6f59b8985841fc7d4fefab3cf9339333fd9f7

SHA-256:
696ca56d9b5504db6701ce6d1e71e7f151496cecdc6bba311398b0be9d7d2df6

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:
4/27/2024 1:22:23 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick (M)
17.3.12.14

File size:
1.5 MB (1,564,104 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
WebPick InstalleRex

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\addons\ytab_setup.exe

Digital Signature
Signed by:
Dmitry Volonov

Authority:
COMODO CA Limited

Valid from:
9/26/2013 12:00:00 PM

Valid to:
9/27/2014 11:59:59 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:
12/1/2013 10:08:12 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

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...
 
[+]

Entropy:
7.9254  (probably packed)

Code size:
92 KB (94,208 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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