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opera_ni_stable.exe

Opera

Sevas-S LLC

The application opera_ni_stable.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. It is also typically executed from the user's temporary directory. 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:
5167e8719b700b02ec202a32c9d3c947

SHA-1:
138733129e6e8bf5baeaaf8f470aea81b9e74027

SHA-256:
5d0f5670218eb15f8846b705f8de5bf3b91fa61763f8dbab2af45f61733ae204

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:
5/17/2024 12:50:36 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.SevasS.Installer (M)
16.3.4.6

File size:
493.7 KB (505,592 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\opera_ni_stable.exe

Digital Signature
Signed by:
Sevas-S LLC

Authority:
VeriSign, Inc.

Valid from:
2/22/2014 6:00:00 PM

Valid to:
3/25/2015 5:59:59 PM

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:
5/19/2013 6:53:11 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:EKcDCaAiMsWGA5YvlDft0n7w0aCitPk2+K:07Aw3Dft0n7w0DiND+K

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:
7.8643

Packer / compiler:
Nullsoft install system v2.x

Code size:
24.5 KB (25,088 bytes)

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

http://opera.ar.downloadable.co/get_file/wUiS4WnYccXGwj 8XPavWwllklY/NSr4WE2wMbON7Ix1qTSs/j1snpNbP0ykYrj2LTXllEZTcWmKEfulGrQzwb1yz4WXBgyb7XuhTwar6TL6yanDpZrSlGlZ/.../rAQfh5MO6k1BifWDP9Q==

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