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chrome-update.exe

Zoobam

This is the Tightrope WebInstall which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. The application chrome-update.exe by Zoobam has been detected as adware by 12 anti-malware scanners. The program is a setup application that uses the Tightrope WebInstall installer. With this installer, users are expecting to download Google's Chrome web browser but before that occurs they may be presented with additional offers, mostly potentially unwanted software or adware.
Publisher:
Zoobam  (signed and verified)

MD5:
6dc0d78b82f39b4bd63200154cd349a8

SHA-1:
fd55fe0d0ba38240eab7ef8f1d224c130e7a8b0a

SHA-256:
a217ad46d1422c2cd9d15f4dd397e8d52e6f4293efe9037e41fd1fcc363f28cd

Scanner detections:
12 / 68

Status:
Adware

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:
12/27/2024 6:53:41 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.Downware
2014.10.25

Avira AntiVirus
ADWARE/Adware.Gen
7.11.30.172

AVG
Generic
2015.0.3311

Clam AntiVirus
Win.Adware.Downloadadmin
0.98/21411

Dr.Web
Adware.Downware.2220
9.0.1.05190

ESET NOD32
Win32/DownloadAdmin (variant)
8.10615

F-Secure
Adware:W32/WebInstallBundle
11.2014-24-10_6

Malwarebytes
PUP.Optional.DownloadAdmin
v2014.10.24.12

Reason Heuristics
PUP.Zoobam.N
14.12.18.11

Sophos
DownloadAdmin
4.98

VIPRE Antivirus
Threat.4783369
33706

File size:
825.1 KB (844,920 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Tightrope WebInstall (using Nullsoft Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\chrome-update.exe

Digital Signature
Signed by:
Zoobam

Authority:
GoDaddy.com, Inc.

Valid from:
10/15/2014 8:27:59 PM

Valid to:
10/15/2017 8:27:59 PM

Subject:
CN=Zoobam, O=Zoobam, L=Kirkland, S=Washington, C=US

Issuer:
CN=Go Daddy Secure Certificate Authority - G2, OU=http://certs.godaddy.com/repository/, O="GoDaddy.com, Inc.", L=Scottsdale, S=Arizona, C=US

Serial number:
4EA9D31E75E043

File PE Metadata
Compilation timestamp:
7/15/2014 10:29:31 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:7xpJfslZtuaVd9lpmhwQbift489IVGD4xJFl6Xqb5Kbmkg8S9:Vp9sVuaVdvgVbmgGDijyikg59

Entry address:
0x3345

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, B0, 73, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, C0, 70, 40, 00, 53, FF, 15, 88, 72, 40, 00, 6A, 08, A3, B8, 3C, 42, 00, E8, 2E, 25, 00, 00, 53, 68, 60, 01, 00, 00, A3, C0, 3B, 42, 00, 8D, 44, 24, 38, 50, 53, 68, 43, 74, 40, 00, FF, 15, 64, 71, 40, 00, 68, 38, 74, 40, 00, 68, C0, 33, 42, 00, E8, 1F, 24, 00, 00, FF, 15, BC, 70, 40, 00, 50, BF, 00, 90, 42, 00, 57, E8, 0D, 24, 00, 00...
 
[+]

Entropy:
7.4924

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file chrome-update.exe has been seen being distributed by the following 3 URLs.

http://files4.fastdownload5.com/download/.../dl?bc=1086440&pid=topvideosoft&brand=topvideosoft.com&s=ytddownloader&c=organic&country=US&cb=-2096911946&filename=chrome-update.exe&productKey=pwhux3komm3645q6z3zvgdod6ug2bbpk&zTmp=1

http://files5.fastdownload3.com/dl?bc=1086440&c=organic&s=chrome-popup&filename=chrome-update.exe&productKey=pwhux3komm3645q6z3zvgdod6ug2bbpk&zTmp=1

http://download1.file-mirror.org/.../chrome-popup.php

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