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chrome-update.exe

Sanflex

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 Sanflex has been detected as adware by 15 anti-malware scanners. The program is a setup application that uses the Tightrope WebInstall installer. The installer is marketed through download protals and search ads as Google's Chrome web browser but will also install additional software offers which include adware, PUPs and browser toolbars.
Publisher:
Sanflex  (signed and verified)

MD5:
eb641b1f0e23421459bcf4f04f19a4a5

SHA-1:
0352378242a3624cf4b3688813cb0f3050de6bd9

SHA-256:
6a018040de7d6d0405097c4fa119dca3acf00adb0c1b0f7b98a74b88bbd6d964

Scanner detections:
15 / 68

Status:
Adware

Description:
This is an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
5/18/2025 1:01:12 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.Downware
2014.12.16

Avira AntiVirus
ADWARE/Adware.Gen
7.11.30.172

AVG
Generic
2015.0.3259

Clam AntiVirus
Win.Adware.Downloadadmin
0.98/19780

Dr.Web
Adware.Downware.2220
9.0.1.05190

ESET NOD32
Win32/DownloadAdmin.H potentially unwanted application
7.0.302.0

F-Secure
Spyware: Adware:W32/WebInstallBundle
5.13.68

G Data
Win32.Application.DownloadAdmin
14.12.24

IKARUS anti.virus
Trojan.Dropper
t3scan.1.8.5.0

K7 AntiVirus
Unwanted-Program
13.187.14339

Malwarebytes
PUP.Optional.DownloadAdmin
v2014.12.15.12

NANO AntiVirus
Riskware.Win32.Downware.djahkt
0.28.6.63850

Reason Heuristics
PUP.Tightrope.Bundler
15.5.3.0

VIPRE Antivirus
Threat.4783369
35418

File size:
822.3 KB (842,064 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:
Sanflex

Authority:
VeriSign, Inc.

Valid from:
7/21/2014 7:00:00 PM

Valid to:
7/21/2017 6:59:59 PM

Subject:
CN=Sanflex, O=Sanflex, 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:
42D7699269B5BB95341F5DA022F6E57D

File PE Metadata
Compilation timestamp:
7/15/2014 11:29:31 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:oxpJfslZtuaVd9lpmhwQbift489IVGD4xJFl6Xqb5Kbmkg8SV:sp9sVuaVdvgVbmgGDijyikg5V

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:
7.4900

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 URL.

http://download5.file-mirror.org/.../chrome-popup.php

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