YARA · Malpedia signator rules
MALPEDIA_Win_Enfal_Auto
autogenerated rule brought to you by yara-signator
- Author
- Felix Bilstein - yara-signator at cocacoding dot com
- Date
- 2026-05-04
- Modified
- 2026-05-18
- Score / Quality
- 75 / 75
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Enfal.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-enfal-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Enfal_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "76e67618-ae5f-5e6f-b36a-f6e61e82415a"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.enfal"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.enfal_auto.yar#L1-L122"
= "N/A"
= "78bfb8fb04b701b7c2ebdd450cd7fec7b7cf53c5a9b52b49092d5af345cf38b0"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { 8d85f8fdffff 57 50 6804010000 ff5608 8d85f8fdffff }
$sequence_1 = { 894108 ffd6 8b4b1c 68???????? 57 89410c ffd6 }
$sequence_2 = { 51 8d8d68ffffff 51 8d8de8fcffff }
$sequence_3 = { bf00010000 33db 57 8d85e8fcffff 53 50 }
$sequence_4 = { 50 ff15???????? 6a0f 56 53 e8???????? }
$sequence_5 = { 683a040000 ff55e0 85c0 8945fc 0f84b5000000 56 }
$sequence_6 = { a5 66a5 a4 be???????? 8dbd58ffffff }
$sequence_7 = { ff5620 85c0 7403 6a01 5f 53 ff15???????? }
$sequence_8 = { 8b750c 57 57 6a02 8b461c 57 57 }
$sequence_9 = { 8b4e04 8b4610 0faf4d08 03c1 }
condition:
7 of them and filesize < 65536
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8d85f8fdffff 57 50 6804010000 ff5608 8d85f8fdffff } | |
| $sequence_1 | hex | { 894108 ffd6 8b4b1c 68???????? 57 89410c ffd6 } | |
| $sequence_2 | hex | { 51 8d8d68ffffff 51 8d8de8fcffff } | |
| $sequence_3 | hex | { bf00010000 33db 57 8d85e8fcffff 53 50 } | |
| $sequence_4 | hex | { 50 ff15???????? 6a0f 56 53 e8???????? } | |
| $sequence_5 | hex | { 683a040000 ff55e0 85c0 8945fc 0f84b5000000 56 } | |
| $sequence_6 | hex | { a5 66a5 a4 be???????? 8dbd58ffffff } | |
| $sequence_7 | hex | { ff5620 85c0 7403 6a01 5f 53 ff15???????? } | |
| $sequence_8 | hex | { 8b750c 57 57 6a02 8b461c 57 57 } | |
| $sequence_9 | hex | { 8b4e04 8b4610 0faf4d08 03c1 } |
Condition
7 of them and filesize < 65536In plain words (Heuristic)
- The file must be smaller than 65536 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.
Licence & attribution
Author: Felix Bilstein - yara-signator at cocacoding dot com
Source repository: Malpedia signator rules @ c901f97b7d
Licence: Creative Commons Attribution-ShareAlike 4.0 (repository licence)
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 76e67618-ae5f-5e6f-b36a-f6e61e82415a
Metadata
| version | 1 |
|---|---|
| tool | yara-signator v0.6.0 |
| signator_config | callsandjumps;datarefs;binvalue |
| malpedia_rule_date | 20260422 |
| malpedia_hash | a182e35da64e6d71cb55f125c4d4225196523f14 |
| malpedia_version | 20260504 |
| malpedia_license | CC BY-SA 4.0 |
| malpedia_sharing | TLP:WHITE |
Tags:FILE
Related rules
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04