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roundworld.dll

Round World

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module roundworld.dll by Round World has been detected as adware by 20 anti-malware scanners. This file is typically installed with the program Round World by Yontoo Technology, Inc. which is a potentially unwanted software program. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages. The file has been seen being downloaded from install-cdn.myroundworld.com and multiple other hosts.
Publisher:
Round World  (signed and verified)

Product:
Round World

Version:
1.0.0.7

MD5:
546c9244b8013940d93fa30619ddeddf

SHA-1:
95c65753ae6090c672b8e588952b9a34fd440d8f

SHA-256:
e1222d5bf56bd87a86c9e29b6df743f2aeed2f80da71ce464aba30e0f8a816c7

Scanner detections:
20 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
4/27/2024 1:11:48 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

Avira AntiVirus
ADWARE/BrowseFox.Gen2
7.11.215.236

AVG
Generic
2016.0.3173

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.15311

Bkav FE
W32.HfsAdware
1.3.0.6379

Dr.Web
Trojan.Yontoo.1016
9.0.1.070

ESET NOD32
Win32/BrowseFox.AE potentially unwanted (variant)
9.11300

Fortinet FortiGate
Riskware/BrowseFox
3/11/2015

F-Prot
W32/S-f64f6ec1
v6.4.7.1.166

herdProtect (fuzzy)
variant of roundworldbho.dll (Adware)
2015.6.17.21

IKARUS anti.virus
PUA.BrowseFox
t3scan.1.8.6.0

K7 AntiVirus
Trojan
13.200.15223

Malwarebytes
PUP.Optional.RoundWorld.A
v2015.03.11.12

McAfee
Artemis!546C9244B801
5600.6829

NANO AntiVirus
Trojan.Win32.Yontoo.dnkubo
0.30.0.296

Qihoo 360 Security
HEUR/QVM30.1.Malware.Gen
1.0.0.1015

Reason Heuristics
PUP.Yontoo
15.3.11.12

Sophos
Generic PUA JF
4.98

Trend Micro House Call
Suspicious_GEN.F47V0310
7.2.70

Vba32 AntiVirus
AdWare.MSIL.Agent
3.12.26.3

File size:
262.7 KB (269,040 bytes)

Product version:
1.0.0.7

Copyright:
(c) Round World. All rights reserved.

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\inetcache\content.ie5\mzb1jb0x\roundworld.dll

Digital Signature
Signed by:
Round World

Authority:
VeriSign, Inc.

Valid from:
1/10/2015 4:00:00 PM

Valid to:
1/11/2016 3:59:59 PM

Subject:
CN=Round World, O=Round World, L=San Diego, S=California, C=US

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:
1E6F69E3F386155D988683D665483D02

File PE Metadata
Compilation timestamp:
3/9/2015 5:36:28 PM

OS version:
6.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:Dyq7vzkKELk3SVaUs0FHxB+V9l63gY+GzGcEG+ZKTERKaHdXncEheC:Dyq7v44SVcYHBth+ZJpcweC

Entry address:
0xF515

Entry point:
55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, EA, 7E, 00, 00, FF, 75, 10, FF, 75, 0C, FF, 75, 08, E8, 07, 00, 00, 00, 83, C4, 0C, 5D, C2, 0C, 00, 6A, 0C, 68, C8, 21, 03, 10, E8, 4C, 02, 00, 00, 33, C0, 40, 8B, 75, 0C, 85, F6, 75, 0C, 39, 35, 4C, 77, 03, 10, 0F, 84, E4, 00, 00, 00, 83, 65, FC, 00, 83, FE, 01, 74, 05, 83, FE, 02, 75, 35, 8B, 0D, C4, 93, 02, 10, 85, C9, 74, 0C, FF, 75, 10, 56, FF, 75, 08, FF, D1, 89, 45, E4, 85, C0, 0F, 84, B1, 00, 00, 00, FF, 75, 10, 56, FF, 75, 08, E8, 11, FE, FF, FF, 89, 45, E4...
 
[+]

Entropy:
6.0729

Developed / compiled with:
Microsoft Visual C++

Code size:
159 KB (162,816 bytes)

The file roundworld.dll has been discovered within the following programs.

Buzzdock  by Alactro LLC
This is a web browser extension that injects advertising. From the EULA: "Buzzdock is free to download and use. Buzzdock is supported by advertising, and users will see additional ads on websites where Buzzdock features operate.
www.buzzdock.com/faq-support
79% remove it
Round World  by Yontoo Technology, Inc.
Round World is an adware program that installs as a web browser plugin to inject and display advertisements.
myroundworld.com/support
81% remove it
 
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The file roundworld.dll has been seen being distributed by the following 2 URLs.

http://install-cdn.myroundworld.com/bed?r=2015031022&bet=3

http://install-cdn.myroundworld.com/bed?r=2015031017&bet=3

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