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opera23.exe

Opera

Sevas-S LLC

The application opera23.exe by Sevas-S 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 NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from opera.ar.downloadable.co.
Publisher:
Sevas-S LLC  (signed and verified)

Product:
Opera

Version:
1.0.0.0

MD5:
fcf791c874b5ce482fbf6996e82ab057

SHA-1:
d85a5e909716023c43a69a3d402aa9eed37c7b99

SHA-256:
473dd5c93fd7d1f5c699b778711a1538de18ead33395eff0a27a98a25af6e07a

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.

Analysis date:
4/24/2024 7:38:59 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP (M)
17.2.13.10

File size:
493.7 KB (505,584 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

Common path:
C:\users\{user}\downloads\opera23.exe

Digital Signature
Signed by:
Sevas-S LLC

Authority:
VeriSign, Inc.

Valid from:
2/23/2014 2:00:00 AM

Valid to:
3/26/2015 1:59:59 AM

Subject:
CN=Sevas-S LLC, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Sevas-S LLC, L=Kyiv, S=Kyivska oblast, C=UA

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:
4B35AC223F4DB03D3B4C5368983A4B53

File PE Metadata
Compilation timestamp:
5/20/2013 2:53:11 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

Entry address:
0x333E

Entry point:
81, EC, D4, 02, 00, 00, 53, 55, 56, 57, 6A, 20, 33, ED, 5E, 89, 6C, 24, 18, C7, 44, 24, 10, 30, A2, 40, 00, 89, 6C, 24, 14, FF, 15, 34, 80, 40, 00, 68, 01, 80, 00, 00, FF, 15, BC, 80, 40, 00, 55, FF, 15, AC, 82, 40, 00, 6A, 08, A3, 78, 4F, 43, 00, E8, A8, 2E, 00, 00, A3, C4, 4E, 43, 00, 55, 8D, 44, 24, 34, 68, B4, 02, 00, 00, 50, 55, 68, F0, B1, 42, 00, FF, 15, 7C, 81, 40, 00, 68, 7C, A3, 40, 00, 68, C0, 3E, 43, 00, E8, 13, 2B, 00, 00, FF, 15, 34, 81, 40, 00, BB, 00, F0, 43, 00, 50, 53, E8, 01, 2B, 00, 00...
 
[+]

Entropy:
7.8844

Packer / compiler:
Nullsoft install system v2.x

Code size:
24.5 KB (25,088 bytes)

The file opera23.exe has been seen being distributed by the following URL.

http://opera.ar.downloadable.co/get_file/wUiS4WnYccXDyCf4UfO5CV530RJ0YyqsWxL3as6M9bZ0vHf14WJwwclKaVXsK7H9NWG90l8bOGeGCb/ ROAlyPpqxceXFVPRqm2pDkXp7TPqmf6SpN/.../g0 kxHGL5uFjFjqAvFpn esWkfTYFgZXiWqo2lF4f7oLvywGsfKE2nSqsEc1f78SzQGvi8JuTkD5jPuJRTt03OHwo8 ikFwg410Ki3J5OESbzBwrhqNc=

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