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chrome-update.exe

Download Admin

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 Download Admin 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 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:
Download Admin  (signed and verified)

MD5:
ae167221508178f1e10476d8236a7ff0

SHA-1:
01326dad02b6e89caddd447a76cbeba13fcb338a

SHA-256:
7c239330faa660631ebcf47420d170e8d18eb0ef7c295dae654c1aa8e6417135

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:
12/29/2024 1:59:32 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Tightrope.Download.Bundler (M)
16.4.9.8

File size:
916.3 KB (938,336 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:
Download Admin

Authority:
VeriSign, Inc.

Valid from:
3/19/2013 8:00:00 PM

Valid to:
5/29/2016 7:59:59 PM

Subject:
CN=Download Admin, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Download Admin, L=SAN FRANCISCO, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
2EEB247A8F9D63D74CE7EF9551E3D401

File PE Metadata
Compilation timestamp:
6/17/2014 11:35:36 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:+xpJMyVWJ0q4kfS6wKhmcRf6vEh7+KAFgtp51idtDWEqOWtVr2/NoPH48:KpanJ0ZkKIh7mFgfidtDWEn20/No

Entry address:
0x3341

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, F8, 24, 7A, 00, E8, 2C, 25, 00, 00, 53, 68, 60, 01, 00, 00, A3, 00, 24, 7A, 00, 8D, 44, 24, 38, 50, 53, 68, 43, 74, 40, 00, FF, 15, 64, 71, 40, 00, 68, 38, 74, 40, 00, 68, 00, 1C, 7A, 00, E8, 1D, 24, 00, 00, FF, 15, BC, 70, 40, 00, 50, BF, 00, 80, 7A, 00, 57, E8, 0B, 24, 00, 00...
 
[+]

Entropy:
7.5078

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

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

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