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GreyGray.OfSvc.dll

GreyGray

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module GreyGray.OfSvc.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:
1.0.5385.14752

MD5:
5ad312f34ec12c8c5d37c18fd978fe44

SHA-1:
e8d03591bcf4c07a9b1d3005e01ae96194d04d28

SHA-256:
297c847063b8dc3adaeeca11d00aca40bba777d95d0a7ec3b2f377871295c897

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:
4/25/2024 6:58:08 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.9.21

File size:
1.2 MB (1,274,648 bytes)

Product version:
1.0.5385.14752

Original file name:
GreyGray.OfSvc.dll

File type:
Dynamic link library (Win32 DLL)

Language:
Language Neutral

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

Digital Signature
Signed by:
GreyGray

Authority:
VeriSign, Inc.

Valid from:
9/19/2013 7:00:00 AM

Valid to:
9/20/2015 6:59:59 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:
9/29/2014 4:11:58 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
8.0

.NET CLR dependent:
Yes

Entry address:
0x1371CA

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, 01, 00, 10, 00, 00, 00, 18, 00, 00, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 01, 00, 01, 00, 00, 00, 30, 00, 00, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 01, 00, 00, 00, 00, 00, 48, 00, 00, 00, 54, 80...
 
[+]

Entropy:
7.7612

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

Code size:
1.2 MB (1,266,176 bytes)

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