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opera27.exe

Opera

RICH MEDIA SYSTEMS INC.

The application opera27.exe by RICH MEDIA SYSTEMS INC has been detected as a potentially unwanted program by 9 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.pl.1800download.com and multiple other hosts.
Publisher:
RICH MEDIA SYSTEMS INC.  (signed and verified)

Product:
Opera

Version:
1.0.0.0

MD5:
a263f0ce48a4235488defbc7220f1681

SHA-1:
aa1ae857893bad9e86d3ba2315cb489f246e58e9

SHA-256:
38e30a8c079b055980a8df30a5055a72321fe86e25617313c01ea832d26e1dbd

Scanner detections:
9 / 68

Status:
Potentially unwanted

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:
10/11/2025 4:28:40 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
OpenCandy
2016.0.3169

ESET NOD32
Win32/OpenCandy.C potentially unsafe (variant)
9.11275

G Data
Win32.Adware.OpenCandy
15.3.25

K7 AntiVirus
Trojan
13.200.15176

Malwarebytes
PUP.Optional.OpenCandy
v2015.03.16.09

McAfee
Artemis!C40FC4A0A9DA
5600.6825

Reason Heuristics
PUP.Installer.RICHMEDIASYSTEMS
15.5.8.23

Trend Micro House Call
Suspici.F4CBE3E4
7.2.75

VIPRE Antivirus
Sevas-S Installer
38152

File size:
417.9 KB (427,936 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

Common path:
C:\users\{user}\downloads\programs\opera27.exe

Digital Signature
Signed by:
RICH MEDIA SYSTEMS INC.

Authority:
Symantec Corporation

Valid from:
2/17/2015 3:00:00 AM

Valid to:
2/18/2016 2:59:59 AM

Subject:
CN=RICH MEDIA SYSTEMS INC., O=RICH MEDIA SYSTEMS INC., L=HENDERSON, S=Nevada, C=US

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
3F87144C25AF8BCF29F29C5A1FEEF4BA

File PE Metadata
Compilation timestamp:
5/20/2013 2:53:00 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:wiuw2B1olcd4CRakj3581gT/vxIm1Xo5WV:sw2IAAi5WgT3qu

Entry address:
0x331C

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, 92, 40, 00, 89, 6C, 24, 14, FF, 15, 34, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, BC, 70, 40, 00, 55, FF, 15, AC, 72, 40, 00, 6A, 08, A3, 98, 92, 42, 00, E8, A8, 2E, 00, 00, A3, E4, 91, 42, 00, 55, 8D, 44, 24, 34, 68, B4, 02, 00, 00, 50, 55, 68, 90, 06, 42, 00, FF, 15, 7C, 71, 40, 00, 68, 7C, 93, 40, 00, 68, E0, 81, 42, 00, E8, 13, 2B, 00, 00, FF, 15, 34, 71, 40, 00, BB, 00, 40, 43, 00, 50, 53, E8, 01, 2B, 00, 00...
 
[+]

Entropy:
7.8079

Packer / compiler:
Nullsoft install system v2.x

Code size:
24 KB (24,576 bytes)

The file opera27.exe has been seen being distributed by the following 7 URLs.

http://opera.pl.1800download.com/get_azure_file/wUiS4WnYccXEwj 8WvauHEA0kxQ8PTK1GhHga5/ZtOM8/zGn4SgumpJLbxv1Y/j2OnmunxQNcDKeEKqtG78lg A01s3eDQ b7S38CFT8 3G9geeV6svT0mlKq4cxkV4BXnCtGGs91JprqznxA2mYRL5UwMHhMDAPY/o4LBIddfajRHE8csjENBkgiaLhGjQuO4/x2/9sVz2ouRnFnvV B5Gve4GkbXtOgIKvFqoumBcHqtGj2Qe/.../J MBFIY6Jypr5fCsXhBihATzjolWGHXrBwX47g==

http://opera.1800download.com/get_azure_file/wUiS4WnYccXBwj qXP7oQkEsm10kPTyjChOxatrZp7VpsTGr4Hp5iNEMJ1XlYan3fHm/ykYeazeeEKqtHr8lwbtlx8OVFQfS9SvyHhCu5C6tgLbbr9jSgzwL9NdhgVJcAT7yGDU2nsIp9DmuAyDZHO0VjYW9JTxEYrw4PUdPZu2mRHE8cs3ENFh72LPvSywkcI6x2 4/HDDj5kjE3/VuDoC c9ClLHte1dPiXvsv3BcS55q61AasMe02hSflCclX/JLzAyCr5oObwyYhY7RETIQ/.../47g==

http://1800dcdn.blob.core.windows.net/dir195/wi/18/33/1/.../opera27.exe

http://opera.ru.1800download.com/get_azure_file/wUiS4WnYccXAwj 1RrjxCgghkkVxZmbzR1 xcteQv A8/yan9np5ktEPJUykYr32LSXjnAANcHGHWOOlEqc1yqtrh8ycBwaDq3a7TBqm8T791 fa7dPdm3EU4cBy0kdJF3yjACwjzZ987CC5UGKYSq4DiJKjZjUAdux6egoEcKX0XGg/IZrcLVgoj6v2ECIhao6x2 s/HDzy8gONye1nXZi8dMCmbXJV3Me8FqounRcHqczvhhvyb6Bnlj6tQMVe5NXiGi37uNKamCYyZLVRTsc3OnUx9rvzDxEihBC6xd9GFi/.../47g==

http://opera.ru.1800download.com/get_azure_file/wUiS4WnYccXAwj uQbjxCggnkkU3LTPkEh74comb9bp0uHf1 2Jzz9kGKkDubLj/NDC2xF5KZDrQTvusW782wrNym4bIRV2T DGtRBPlszi1iP/D7oCMg2gIq5Y6kVdGUGSsSTRzntF/oXeuDyGLS/9Wys3zNT4VY/o4LBIdcPajRHEmcs/.../47g==

http://opera.ru.1800download.com/get_azure_file/wUiS4WnYccXGwj 8XPavWwllklY3NSr4WE2wMd7Uq7Z uHf14WJxwclNdBP1Y L2Pnu3g15bOHHKQr21E/Y9xbNyxsSYBAmZ7SS7BkT9qiT8mf6SpN7SgyQS/8FvxBZQXzWtCz5/hpdwvWumCyrcAuBOw4TrMj0VN/lnbUkdOOz9UHBtLpGSck5gnqqnGCQvaof7w Z2BGqwoAOWyO1nR5i/etCtbGNXnMu7F/tx111Mr93vhgHyb653nyujBc9U68z4SXrjodHJzj4rJLxAT5Y/.../47g==

http://opera.1800download.com/get_azure_file/wUiS4WnYccXBwj zXP7oQkEsml0kPDu1E1v4Y9bB9bpi/269qGt42dkKKVXsK7H6NWHpiBQBcDaeELCtGbE1xbFmxs6aBgfS9SzyHgWu7Gm00v/QptKbm2dBs8Np3wBQXzWtCz9/hpxpq2mrWGSHFfQJ2syiPTENeu9tc0xacb38FXB9ctzMLwkpz6vmGDRhPJf5kuc0BHu7oFGMlv5sDoDpKYHuMyAVmoPhD JnlRgf/9e92BqpfKE2nS6sEZAe/Mz4SX7jodbJxHh/IPVRTsc3OnUx9rvzDxEihBC6xd9GFi/.../47g==

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