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greygray.expext.dll

GreyGray

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

Version:
1.0.5564.36354

MD5:
e8a5410f8ce499ec45e75fbb532982a0

SHA-1:
4752a5be2e8646a37bbe735e869fb734762598f0

SHA-256:
5d49a6bea9686139d5ea859e636ba3d83d860d91c71073158f4d71f47a3a5c74

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:
4/26/2024 3:29:43 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.GreyGray (M)
16.2.13.19

File size:
497.8 KB (509,720 bytes)

Product version:
1.0.5564.36354

Original file name:
GreyGray.ExpExt2015032804.dll

File type:
Dynamic link library (Win32 DLL)

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

Digital Signature
Signed by:
GreyGray

Authority:
VeriSign, Inc.

Valid from:
9/19/2013 3:00:00 AM

Valid to:
9/20/2015 2:59:59 AM

Subject:
CN=GreyGray, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=GreyGray, 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:
23FF62A16C638B371A4AB98A8F876E8B

File PE Metadata
Compilation timestamp:
3/28/2015 6:11:59 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
6.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
6144:ShKcsZVvdn6Y/PdPNfXOZAZTP6M4JDjHXlmdHdxZ1q/2y0mJvvigJwDYxSzn8Ck3:S2PhH7XJZTPuP3wd9xZDm9VVx1ADi/

Entry address:
0x7C46A

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:
489.5 KB (501,248 bytes)

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