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stflt.sys

Spyware Terminator

Crawler, LLC

The file stflt.sys, “Spyware Terminator filter driver” by Crawler has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a Windows 64-bit file system device driver named “Spyware Terminator Driver Filter”.
Publisher:
Windows (R) Win 7 DDK provider  (signed by Crawler, LLC)

Product:
Spyware Terminator

Description:
Spyware Terminator filter driver

Version:
3.00

MD5:
a340abc480c43c30cabc943e78ac631e

SHA-1:
2aa981b1c8268f60297b4b88387915c2ca582e56

SHA-256:
6d7a157b96f6ab1d853e1edb74359f9ec9e046d29e9c3d2b77be456bf46bbe88

Scanner detections:
1 / 68

Status:
Potentially unwanted

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Analysis date:
6/28/2025 4:40:44 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Crawler.I
14.8.8.2

File size:
49.5 KB (50,696 bytes)

Product version:
3.00

Copyright:
Copyright (c) Xacti,LLC. All rights reserved.

Original file name:
stflt.sys

File type:
Driver (Win64 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\stflt.sys

Digital Signature
Signed by:
Crawler, LLC

Authority:
VeriSign, Inc.

Valid from:
11/26/2008 1:00:00 AM

Valid to:
12/13/2010 12:59:59 AM

Subject:
CN="Crawler, LLC", OU=IT, OU=Digital ID Class 3 - Microsoft Software Validation v2, O="Crawler, LLC", L=Boca Raton, S=Florida, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2004 CA, OU=Terms of use at https://www.verisign.com/rpa (c)04, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
2BB61CFF3A3CCE8EA9D1B965D643FEC8

File PE Metadata
OS bitness:
Win64

CTPH (ssdeep):
1536:ni7qX7s095lx/tLeu2SEwjsWjx6CPh2v/:ni7qX7s0jIuHnx6CZw

Entry point:
48, 83, EC, 28, 4C, 8B, C2, 4C, 8B, C9, E8, 95, FF, FF, FF, 49, 8B, D0, 49, 8B, C9, 48, 83, C4, 28, E9, 82, FD, FF, FF, CC, CC, CC, CC, CC, CC, CC, CC, CC, CC, 5C, 00, 44, 00, 65, 00, 76, 00, 69, 00, 63, 00, 65, 00, 5C, 00, 73, 00, 70, 00, 5F, 00, 72, 00, 73, 00, 64, 00, 72, 00, 76, 00, 32, 00, 00, 00, CC, CC, CC, CC, CC, CC, CC, CC, CC, CC, CC, CC, 5C, 00, 44, 00, 6F, 00, 73, 00, 44, 00, 65, 00, 76, 00, 69, 00, 63, 00, 65, 00, 73, 00, 5C, 00, 73, 00, 70, 00, 5F, 00, 72, 00, 73, 00, 64, 00, 72, 00, 76, 00...
 
[+]

Driver
Display name:
Spyware Terminator Driver Filter

Service name:
sp_rsdrv2

Type:
File system 'filter' driver (FileSystemDriver)

Group:
FSFilter Activity Monitor

Depends on:
FltMgr


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