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newtab_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 newtab_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:
a87cb2ef9db96c19d8e313040792b322

SHA-1:
f8615cb2808bf6d3d361ab27daf931bfb903389f

SHA-256:
a7d2adf9ce970c66bdb0e20af762bc1d92487b7290ac8f8960acd82cc3522abf

Scanner detections:
24 / 68

Status:
Adware

Explanation:
JustPlugIt cross-browser extension/BHO delivered via adware installer (WebPick InstalleRex) and includes background service (AssistantSvc). Randomizes files names.

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 7:07:27 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Adware.Dropper.101
1018

Agnitum Outpost
PUA.Agent
7.1.1

AhnLab V3 Security
Adware/Win32.Agent
14.04.23

Avira AntiVirus
ADWARE/Adware.Gen7
7.11.144.234

avast!
Win32:MultiPlug-AN [PUP]
2014.9-140423

AVG
Generic_r
2015.0.3496

Bitdefender
Gen:Variant.Adware.Dropper.101
1.0.20.565

Comodo Security
Application.Win32.Multiplug.R
18153

Dr.Web
Trojan.Crossrider.12895
9.0.1.0113

Emsisoft Anti-Malware
Gen:Variant.Adware.Dropper.101
8.14.04.23.09

ESET NOD32
Win32/AdWare.MultiPlug
8.9711

F-Secure
Gen:Variant.Adware.Dropper.101
11.2014-23-04_4

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

K7 AntiVirus
Unwanted-Program
13.176.11847

Kaspersky
not-a-virus:AdWare.Win32.MultiPlug
14.0.0.3973

McAfee
PUP-FID!A87CB2EF9DB9
5600.7152

MicroWorld eScan
Gen:Variant.Adware.Dropper.101
15.0.0.339

NANO AntiVirus
Trojan.Win32.Crossrider.cwpxlg
0.28.0.59492

Panda Antivirus
Trj/Genetic.gen
14.04.23.09

Reason Heuristics
PUP.Installer.SergeiIvanovichDrozdov.M
14.4.23.8

Rising Antivirus
PE:Malware.MultiPlug!6.13CF
23.00.65.14421

Sophos
MultiPlug
4.98

Vba32 AntiVirus
AdWare.Win64.MultiPlag
3.12.26.0

VIPRE Antivirus
JustPlugIt
28530

File size:
1.5 MB (1,618,120 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
WebPick InstalleRex

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

Digital Signature
Signed by:
Sergei Ivanovich Drozdov

Authority:
Unizeto Technologies S.A.

Valid from:
1/8/2014 9:24:34 AM

Valid to:
1/8/2015 9:24:34 AM

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:
4/10/2014 8:39:17 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
24576:ccTRZsJ8AU58PQGP85PMSNLSZBMd2ggFholS/xjOMnDTbdDw3RB:1Z2YeO5PtJSnM/gFhAO9hfJk3RB

Entry address:
0x1085B

Entry point:
E8, CE, 49, 00, 00, E9, 00, 00, 00, 00, 6A, 14, 68, 00, 21, 42, 00, E8, AF, 20, 00, 00, E8, E0, 07, 00, 00, 0F, B7, F0, 6A, 02, E8, 61, 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, 20, 37, 00, 00, 85, C0, 75, 08, 6A, 1C, E8, DC, 00, 00, 00, 59, E8...
 
[+]

Code size:
102.5 KB (104,960 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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