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opera_download.exe

DownloadShield

The application opera_download.exe by DownloadShield has been detected as adware by 6 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from www.browserwin.com.
Publisher:
DownloadShield  (signed and verified)

MD5:
d4ba3bfda9c9adba0e39730ce36c8146

SHA-1:
97dd905edaaa9c5aa5ad1913c6a723d8ec0b95e3

SHA-256:
76a19bfc6fb0768db8ccdee26425da472a8183d59389911e4e70bfdffdfe8c54

Scanner detections:
6 / 68

Status:
Adware

Analysis date:
4/26/2024 10:40:58 AM UTC  (today)

Scan engine
Detection
Engine version

AVG
Generic
2016.0.3186

ESET NOD32
Win32/DownWare.AB potentially unwanted application
7.0.302.0

Reason Heuristics
PUP.DownloadShield
15.2.26.19

Rising Antivirus
NS:PUF.SilenceInstaller!1.9DDF
23.00.65.15224

Vba32 AntiVirus
suspected of Trojan.Downloader.gen.h
3.12.26.3

VIPRE Antivirus
Threat.5068131
37788

File size:
206.3 KB (211,224 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\downloads\opera_download.exe

Digital Signature
Signed by:
DownloadShield

Authority:
VeriSign, Inc.

Valid from:
3/10/2013 5:00:00 PM

Valid to:
5/9/2016 4:59:59 PM

Subject:
CN=DownloadShield, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=DownloadShield, L=San Jose, 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:
309C9F4C0975E9792AECED60B8346C13

File PE Metadata
Compilation timestamp:
12/5/2009 2:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:PsogKS7r7a7jobuexHKPWPQtCT9s5cq6kKfCj+:7kP7aaNKPWPQtCT9s5cA4

Entry address:
0x323C

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 30, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 58, 3F, 42, 00, E8, 09, 2C, 00, 00, A3, A4, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 58, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, B8, 91, 40, 00, 68, A0, 36, 42, 00, E8, BC, 28, 00, 00, FF, 15, B0, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, AA, 28, 00, 00...
 
[+]

Entropy:
7.7361

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file opera_download.exe has been seen being distributed by the following URL.

http://www.browserwin.com/.../download

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