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fassurun.expext.dll

fassurun

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module fassurun.expext.dll by fassurun has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat.
Publisher:
fassurun  (signed and verified)

Version:
1.0.5462.13766

MD5:
2cfa00123b9fa935bd9eb0dd48985715

SHA-1:
6ebc77ff4242335b2daca217168c81935dfbb403

SHA-256:
d539eb41e597a8c8f7a7fd901cb5380ddfc39df2dc924b179eec4ba8b201d054

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
4/16/2024 3:33:09 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.fassurun (M)
16.1.17.5

File size:
583.8 KB (597,784 bytes)

Product version:
1.0.5462.13766

Original file name:
fassurun.ExpExt2014121515.dll

File type:
Dynamic link library (Win32 DLL)

Common path:
C:\Program Files\fassurun\bin\plugins\fassurun.expext.dll

Digital Signature
Signed by:
fassurun

Authority:
VeriSign, Inc.

Valid from:
8/20/2013 9:00:00 PM

Valid to:
8/20/2015 8:59:59 PM

Subject:
CN=fassurun, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=fassurun, 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:
6EA3A2D62F7379560AF4974E60282338

File PE Metadata
Compilation timestamp:
12/15/2014 12:38:57 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
6.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
12288:VhjVl1LCzd7AFWPQ4Onab4IUXWYqQ13g81Katjq2MsvLDIxsiFh5/r9FC:VhjVad7AcbrLn5/hFC

Entry address:
0x91CF6

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...
 
[+]

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

Code size:
575.5 KB (589,312 bytes)

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