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opera.exe

The application opera.exe has been detected as a potentially unwanted program by 33 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer, however the file is not signed with an authenticode signature from a trusted source. According to AVG, this software downloads additional adware offers during setup. The file has been seen being downloaded from www.ifreedownloadss.com.
MD5:
146d6285033102676941516410def784

SHA-1:
1238e7b0a67fc791c631e6b74d802c6884480a70

SHA-256:
4ef620a98992c8f7dc6957c0e41c07a2f25ea1cdc33ae602972bcea57e436236

Scanner detections:
33 / 68

Status:
Potentially unwanted

Explanation:
Bundles additional adware offers during download and installation using the OutBrowse installer.

Analysis date:
4/26/2024 6:46:26 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Application.Bundler.Outbrowse.A
235

Agnitum Outpost
PUA.OutBrowse
7.1.1

AhnLab V3 Security
PUP/Win32.OutBrowse
2015.10.27

Avira AntiVirus
APPL/OutBrowse.b.19
8.3.2.2

Arcabit
Application.Bundler.Outbrowse.A
1.0.0.585

avast!
NSIS:OutBrowse-EB [PUP]
2014.9-160613

AVG
Downloader
2017.0.2713

Baidu Antivirus
PUA.Win32.OutBrowse
4.0.3.16613

Bitdefender
Application.Bundler.Outbrowse.A
1.0.20.825

Clam AntiVirus
Win.Adware.OutBrowse-4
0.98/21511

Comodo Security
Application.Win32.OutBrowse.~B
23480

Dr.Web
Trojan.Siggen6.33552
9.0.1.0165

ESET NOD32
Win32/OutBrowse.D potentially unwanted (variant)
10.12469

Fortinet FortiGate
Riskware/NSIS_OutBrowse
6/13/2016

F-Secure
Application.Bundler.Outbrowse
11.2016-13-06_2

G Data
Application.Bundler.Outbrowse
16.6.25

K7 AntiVirus
Unwanted-Program
13.212.17655

Kaspersky
not-a-virus:Downloader.NSIS.OutBrowse
14.0.0.62

Malwarebytes
PUP.Optional.Smart
v2016.06.13.03

McAfee
Artemis!146D62850331
5600.6369

Microsoft Security Essentials
SoftwareBundler:Win32/OutBrowse
1.1.12205.0

MicroWorld eScan
Application.Bundler.Outbrowse.A
17.0.0.495

NANO AntiVirus
Trojan.Win32.OutBrowse.cxaakt
0.30.26.3947

Panda Antivirus
Trj/NsisDownloader.A
16.06.13.03

Qihoo 360 Security
Trojan.Generic
1.0.0.1015

Quick Heal
TrojanDownloader.NSIS.OutBrow
6.16.14.00

Reason Heuristics
PUP.OutBrowse (M)
16.6.13.15

Rising Antivirus
PE:Malware.Generic/QRS!1.9E2D [F]
23.00.65.16611

Sophos
OutBrowse (PUA)
4.98

SUPERAntiSpyware
Adware.OutBrowse/Variant
9084

Total Defense
Win32/Tnega.fRTYbOC
37.1.62.1

Vba32 AntiVirus
Downloader.OutBrowse
3.12.26.4

VIPRE Antivirus
OutBrowse
44842

File size:
608 KB (622,555 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
Language Neutral

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

File PE Metadata
Compilation timestamp:
12/6/2009 4:20:52 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:4QE5cWN3aPbD3x6imu00ufz6HSkdxvN+RrA55N2uSgcbUe6Q8SAEe3nTJl2:4QmrNKPbDVmH0uf+HSkHl+RsnNFSgcD/

Entry address:
0x30FA

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9751

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://www.ifreedownloadss.com/.../download.php?id=52ec38745b90d&i=uk

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