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utilgrassmow.exe

grassmow

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

Version:
1.0.5401.5534

MD5:
6d1f895c799a5014eb0fa5f5d28bfe86

SHA-1:
6176693410d66f3c18c325389dc3b0c587cce4cd

SHA-256:
620177ba1b13299a059af91cfc4055e3147ac2aea7d4939c285ffd11a87ae524

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:
11/5/2024 4:47:42 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.13.3

File size:
510.3 KB (522,528 bytes)

Product version:
1.0.5401.5534

Original file name:
grassmow.exe

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\Program Files\grassmow\bin\utilgrassmow.exe

Digital Signature
Signed by:
grassmow

Authority:
VeriSign, Inc.

Valid from:
4/29/2014 2:00:00 AM

Valid to:
4/30/2015 1:59:59 AM

Subject:
CN=grassmow, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=grassmow, L=Santa Monica, 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:
46F979858F2F3241487CBA3EF684BAE8

File PE Metadata
Compilation timestamp:
10/15/2014 1:04:34 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
6.0

.NET CLR dependent:
Yes

Entry address:
0x7F382

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, 02, 00, 00, 00, 5B, 00, 00, 00, C4, F3, 07, 00, C4, D5, 07, 00, 52, 53, 44, 53, 2F, 64, 8F, E6, 03, DE, 0F, 4E, 97, F9, 60, FD, D8, 7A, 8E, E5, 01, 00, 00, 00, 44, 3A, 5C, 55, 74, 69, 6C, 69, 74, 69, 65, 73, 5C, 7A, 61, 69, 66, 70, 74, 66, 32, 2E, 6F, 76, 31, 5C, 44, 65, 73, 6B, 74, 6F, 70, 5C, 44, 65, 73, 6B...
 
[+]

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

Code size:
501.5 KB (513,536 bytes)

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