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ytab_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 ytab_setup.exe by Sergei Ivanovich Drozdov has been detected as adware by 24 anti-malware scanners. The program is a setup application that uses the WebPick InstalleRex installer. It is built using the Crossrider cross-browser extension toolkit. While the file utilizes the Crossrider framework and delivery services, it is not owned by Crossrider.
Publisher:
Sergei Ivanovich Drozdov  (signed and verified)

MD5:
7a86874a608ef62162b1057bafb9814c

SHA-1:
fe43d8411f71b8f2bb27b2260a1a0124d41c070f

SHA-256:
8a0b07aa5ff19df504df6cd6d7f0d8f818bcb3e0dca6343026cb5fcb133a9d97

Scanner detections:
24 / 68

Status:
Adware

Explanation:
The software may change the browser's home page and search provider settings as well as display advertisements.

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:
4/26/2024 9:27:11 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Adware.Dropper.101
1022

Agnitum Outpost
PUA.MultiPlug
7.1.1

AhnLab V3 Security
Adware/Win32.BHO
14.04.19

Avira AntiVirus
ADWARE/Adware.Gen7
7.11.142.138

avast!
Win32:MultiPlug-AA [PUP]
2014.9-140419

AVG
Generic_r
2015.0.3500

Bitdefender
Gen:Variant.Adware.Dropper.101
1.0.20.545

Comodo Security
Application.Win32.MegaSearch.ATH
18082

Dr.Web
Trojan.Crossrider.4243
9.0.1.0109

Emsisoft Anti-Malware
Gen:Variant.Adware.Dropper.101
8.14.04.19.07

ESET NOD32
Win32/AdWare.MultiPlug (variant)
8.9662

Fortinet FortiGate
Riskware/MultiPlug
4/19/2014

F-Secure
Gen:Variant.Adware.Dropper.101
11.2014-19-04_7

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

IKARUS anti.virus
Win32.SuspectCrc
t3scan.1.6.1.0

Malwarebytes
PUP.Optional.MultiPlug.A
v2014.04.19.07

McAfee
PUP-FID!7A86874A608E
5600.7156

MicroWorld eScan
Gen:Variant.Adware.Dropper.101
15.0.0.327

NANO AntiVirus
Trojan.Win32.Crossrider.curnem
0.28.0.59048

Panda Antivirus
Trj/Genetic.gen
14.04.19.07

Reason Heuristics
PUP.Installer.SergeiIvanovichDrozdov.K
14.4.19.7

Rising Antivirus
PE:Malware.MultiPlug!6.13CF
23.00.65.14417

Sophos
MultiPlug
4.98

VIPRE Antivirus
Trojan.Win32.Generic
28194

File size:
1.5 MB (1,615,048 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:
Sergei Ivanovich Drozdov

Authority:
Unizeto Technologies S.A.

Valid from:
1/8/2014 7:24:34 PM

Valid to:
1/8/2015 7:24:34 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 11:27:10 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
24576:DoiZSCsSLh5G1OreyVHzooUKWt7FTYDgtxasXWC3Z+3tmNaLX9VMlDxlOc+DMLvu:HZpdmlyeoGt7RYD0aDmDxlADMLNl1z0

Entry address:
0x10BAB

Entry point:
E8, BE, 4A, 00, 00, E9, 00, 00, 00, 00, 6A, 14, 68, 88, 21, 42, 00, E8, 9F, 21, 00, 00, E8, E0, 07, 00, 00, 0F, B7, F0, 6A, 02, E8, 51, 4A, 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, 10, 38, 00, 00, 85, C0, 75, 08, 6A, 1C, E8, DC, 00, 00, 00, 59, E8...
 
[+]

Entropy:
7.9202  (probably packed)

Code size:
103.5 KB (105,984 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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