(YARA) Detect Unhandled Exception Filters
rule Detect_SuspendThread: AntiDebug {
meta:
description = "Detect SuspendThread as anti-debug"
author = "Unprotect"
comment = "Experimental rule"
strings:
$1 = "UnhandledExcepFilter" fullword ascii
$2 = "SetUnhandledExceptionFilter" fullword ascii
condition:
uint16(0) == 0x5A4D and filesize < 1000KB and any of them
}
Associated Techniques
| Technique Name | Technique ID's | Categories | Snippet(s) |
|---|---|---|---|
| Unhandled Exception Filter | U0108 B0001.030 |
|
Matching Samples 10 most recent
| Sample Name | Matching Techniques | First Seen | Last Seen |
|---|---|---|---|
| rootkit.exe | 10 | 2026-03-24 | 3 days, 6 hours ago |
| spread.exe | 6 | 2026-03-24 | 3 days, 6 hours ago |
| ngen.exe | 7 | 2026-03-20 | 1 week ago |
| write.exe | 5 | 2026-03-20 | 1 week ago |
| UnPackMe_VMProtect_1.53.exe | 7 | 2026-03-19 | 1 week, 1 day ago |
| Malware.unknown.exe.malz | 8 | 2026-02-22 | 1 month ago |
| main.exe | 11 | 2026-02-07 | 1 month, 2 weeks ago |
| main.exe | 7 | 2026-02-03 | 1 month, 3 weeks ago |
| loader_complete.exe | 10 | 2026-01-27 | 1 month, 3 weeks ago |
| cmd.exe | 7 | 2025-12-10 | 3 months, 2 weeks ago |
Created
June 22, 2022
Last Revised
March 27, 2026