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opera23.exe

Opera

Sevas-S LLC

The application opera23.exe by Sevas-S has been detected as adware by 14 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The installer uses the OpenCandy monitzation platform which will donwload and install offers in the setup for potentially unwanted software including ad/search-supported toolbars. The file has been seen being downloaded from opera.13-244-221383.540a1007eb7af.dablecdn.com and multiple other hosts.
Publisher:
Sevas-S LLC  (signed and verified)

Product:
Opera

Version:
1.0.0.0

MD5:
741d98432f2754ea7dc03a884e9afa8b

SHA-1:
62cdaa5c7e0e3e7e76829010e565025f687bed3e

SHA-256:
d545237c24b71a0a15f66888fc1d1ace5540493ff9b04a6b05bc4b5bd6435cd4

Scanner detections:
14 / 68

Status:
Adware

Explanation:
Packages the OpenCandy software bundler that offers to install additional software and may include web browser add-ons and toolbars which display advertising (based on publisher settings and geo context).

Analysis date:
5/20/2024 10:57:06 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.OpenCandy
2014.10.20

Avira AntiVirus
APPL/Downloader.Gen
7.11.179.162

AVG
AdLoad.OpenCandy
2015.0.3283

Baidu Antivirus
Adware.Win32.OpenCandy
4.0.3.141121

Dr.Web
Adware.Downware.8467
9.0.1.0325

ESET NOD32
Win32/JoyDownloader
8.10587

G Data
Win32.Adware.OpenCandy
14.11.24

K7 AntiVirus
Unwanted-Program
13.184.13727

Malwarebytes
PUP.Optional.OpenCandy
v2014.11.21.12

McAfee
Artemis!741D98432F27
5600.6939

Reason Heuristics
PUP.SevasS.H
14.11.21.12

Trend Micro House Call
Suspicious_GEN.F47V0912
7.2.325

VIPRE Antivirus
Sevas-S Installer
34076

File size:
493 KB (504,840 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

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

Digital Signature
Signed by:
Sevas-S LLC

Authority:
VeriSign, Inc.

Valid from:
2/23/2014 1:00:00 AM

Valid to:
3/26/2015 12:59:59 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 1:53:11 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:1KcmWGYuCx82nUQt3/CjcVBzd1mojMSUAJ0LdO:7mWGYuYcC3/CAHzfmojMS1JudO

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:
7.8826

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 2 URLs.

http://opera.13-244-221383.540a1007eb7af.dablecdn.com/get_file/lyezGsT63gCmgBtxNRrEfg/1409949207/13/17/1/.../opera23.exe

http://opera.downloadable.co/get_file/wUiS4WnYccXBwj qXP7oQkEsm10kPTyjChOxatrZp7VpsTGr4Hp5iNENJ1Xlar7uNDC2w15KdDrYCeLkErM90btixcWVBB6avCX7BlSu4S tgLbbrNPKkGRZqtY6gV9QEDK1AX1/lck7/znxGWmYQLZOnJ6id2tWIfxwcwoEcKXyXGggOJuMdwkpz6vmGDR6O5f5kucyBHv96wSbw7gvFpn esSkfSQUn5j/.../OmF2 Le1FllrjRyilIQQASe4DAzwqNc=

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