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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:
1.0.5563.35143

MD5:
9bf4e640cbd756ad2d59b667632f4ba4

SHA-1:
cb668594bbccd959136b49ff76281062cca3252a

SHA-256:
707ad3943c8f45f65b08154c4ece0bf28b3ab69d2676f24ac29388f5acbb2978

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:
4/20/2024 12:04:45 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.GreyGray (M)
16.2.13.19

File size:
2.4 MB (2,497,304 bytes)

Product version:
1.0.5563.35143

Original file name:
GreyGray.OfSvc2015032703.dll

File type:
Dynamic link library (Win32 DLL)

Common path:
C:\Program Files\greygray\bin\plugins\greygray.ofsvc.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:
3/27/2015 5:31:35 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
6.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
49152:ekXS5S4cFkFls+HzdSIb1XpMontbT2r7W:dGSM1Xp/ie

Entry address:
0x2618B2

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:
2.4 MB (2,488,832 bytes)

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