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grassmow.purbrowse64.exe

grassmow

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application grassmow.purbrowse64.exe by grassmow has been detected as adware by 10 anti-malware scanners. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages.
Publisher:
grassmow  (signed and verified)

MD5:
3c0f394c27b2d3403b9f4063de77d964

SHA-1:
efecff04e0937592c0aa42ebeebc88572d059529

SHA-256:
ced6b1885ff7352330ed199c3d278957a3533850c20713b794eb3617a6c0b69a

Scanner detections:
10 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
4/24/2024 3:50:05 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.BrowseFox
2014.10.02

avast!
Win64:BrowseFox-A [PUP]
140929-0

AVG
Generic
2015.0.3334

Clam AntiVirus
Win.Adware.Swiftbrowse-279
0.98/19469

ESET NOD32
Win64/BrowseFox.A potentially unwanted application
7.0.302.0

IKARUS anti.virus
PUA.BrowseFox
t3scan.1.7.8.0

nProtect
Trojan-Clicker/W32.LinkSwift.349984
14.10.02.01

Reason Heuristics
PUP.grassmow.T
14.10.2.8

VIPRE Antivirus
Threat.5061968
33520

File size:
341.8 KB (349,984 bytes)

File type:
Executable application (Win64 EXE)

Common path:
C:\Program Files\grassmow\bin\grassmow.purbrowse64.exe

Digital Signature
Signed by:
grassmow

Authority:
VeriSign, Inc.

Valid from:
4/29/2014 1:00:00 AM

Valid to:
4/30/2015 12:59:59 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:
9/9/2014 10:53:44 PM

OS version:
5.2

OS bitness:
Win64

Subsystem:
Windows Console

Linker version:
10.0

CTPH (ssdeep):
6144:FmTV6EBlub61yGYZW+WpVdDhiIqqoPPBFvueqTlbk5C/QDV0wU7YBTBhxOsr/NI6:FuV6Mub6YW/pV9W9TvKjZ7YBTXcyr3

Entry address:
0x25110

Entry point:
48, 83, EC, 28, E8, 77, 94, 00, 00, 48, 83, C4, 28, E9, 76, FE, FF, FF, CC, CC, 4C, 8D, 0D, 25, A5, 02, 00, 33, C0, 49, 8B, D1, 44, 8D, 40, 08, 3B, 0A, 74, 2B, FF, C0, 49, 03, D0, 83, F8, 2D, 72, F2, 8D, 41, ED, 83, F8, 11, 77, 06, B8, 0D, 00, 00, 00, C3, 81, C1, 44, FF, FF, FF, B8, 16, 00, 00, 00, 83, F9, 0E, 41, 0F, 46, C0, C3, 48, 98, 41, 8B, 44, C1, 04, C3, CC, 48, 83, EC, 28, E8, DB, 5E, 00, 00, 48, 85, C0, 75, 09, 48, 8D, 05, 37, A6, 02, 00, EB, 04, 48, 83, C0, 10, 48, 83, C4, 28, C3, 48, 83, EC, 28...
 
[+]

Entropy:
6.2946

Code size:
230.5 KB (236,032 bytes)

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