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roundworld.expext.dll

Round World

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module roundworld.expext.dll by Round World has been detected as adware by 8 anti-malware scanners. 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.
Publisher:
Round World  (signed and verified)

Version:
1.0.5538.23743

MD5:
64897d949508153e797f4f2ddb93aea8

SHA-1:
ee6f9ae88d70e2505e5010f0952c550b29d972d7

SHA-256:
4c2e79e7c235caff07f510fa607b8fd9e43f98c9f7e65feb55db0444c50369eb

Scanner detections:
8 / 68

Status:
Adware

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

Analysis date:
5/14/2024 4:50:16 PM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
ADWARE/BrowseFox.Gen7
7.11.213.24

AVG
Generic
2016.0.3183

Baidu Antivirus
Adware.MSIL.BrowseFox
4.0.3.1532

ESET NOD32
MSIL/BrowseFox.G potentially unwanted application
7.0.302.0

F-Prot
W32/S-9fa49d20
v6.4.7.1.166

K7 AntiVirus
Adware
13.1915121

McAfee
Program.BrowseFox-FUT
16.8.708.2

Reason Heuristics
PUP.Yontoo
15.3.2.3

File size:
498.2 KB (510,192 bytes)

Product version:
1.0.5538.23743

Original file name:
RoundWorld.ExpExt2015030121.dll

File type:
Dynamic link library (Win32 DLL)

Language:
Language Neutral

Common path:
C:\Program Files\round world\bin\plugins\roundworld.expext.dll

Digital Signature
Signed by:
Round World

Authority:
VeriSign, Inc.

Valid from:
1/11/2015 11:00:00 AM

Valid to:
1/12/2016 10:59:59 AM

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:
3/2/2015 8:11:40 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
6.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
6144:n+nt5yLBlnxCG+D6esqI+3BhfUelhcsmzCCpTY98u+wyz53WlF2HV0gIerH6W4xL:ndxjOOq7BhfUe1mOUK+l56UZ4bLDiQ

Entry address:
0x7C776

Entry point:
FF, 25, 00, 20, 40, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00...
 
[+]

Entropy:
6.9685

Developed / compiled with:
Microsoft Visual C# / Basic .NET

Code size:
490 KB (501,760 bytes)

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