YARA · Malpedia signator rules
MALPEDIA_Win_Graftor_Auto
autogenerated rule brought to you by yara-signator
MalwareGraftorMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
- 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: Graftor.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-graftor-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Graftor_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "d9d0bea0-ccef-5861-9dfa-fac7d2ebaa34"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.graftor"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.graftor_auto.yar#L1-L132"
= "N/A"
= "41346109b754abff09dd11cdd6f40f3cab21175caffb94b2808010c24f0a709f"
= 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 = { 8bec 56 8bf1 8b4608 c706fcbb4c00 85c0 7408 }
$sequence_1 = { 762b 57 8b7e14 03fb 6a00 8bc6 e8???????? }
$sequence_2 = { e8???????? 53 6a01 8db424d0000000 e8???????? 33c0 }
$sequence_3 = { 8d8598fdffff 50 c645fc28 e8???????? 83c410 6aff }
$sequence_4 = { f605????????01 7517 830d????????01 68d49e4d00 ff15???????? a3???????? a1???????? }
$sequence_5 = { 5e 8bc7 5d c20400 55 8bec 837d0801 }
$sequence_6 = { 741c 50 ff15???????? 85c0 7511 8b4604 3d58b74e00 }
$sequence_7 = { b033 c0c745 ec 07 0000 00894de86689 45 }
$sequence_8 = { c684245403000077 e8???????? c684245003000078 83bc24f001000010 8b8424dc010000 7307 8d8424dc010000 }
$sequence_9 = { ffd6 89857cbdffff 3bc3 0f8451010000 8d8548bdffff 50 8d8540bdffff }
condition:
7 of them and filesize < 294912
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8bec 56 8bf1 8b4608 c706fcbb4c00 85c0 7408 } | |
| $sequence_1 | hex | { 762b 57 8b7e14 03fb 6a00 8bc6 e8???????? } | |
| $sequence_2 | hex | { e8???????? 53 6a01 8db424d0000000 e8???????? 33c0 } | |
| $sequence_3 | hex | { 8d8598fdffff 50 c645fc28 e8???????? 83c410 6aff } | |
| $sequence_4 | hex | { f605????????01 7517 830d????????01 68d49e4d00 ff15???????? a3???????? a1???????? } | |
| $sequence_5 | hex | { 5e 8bc7 5d c20400 55 8bec 837d0801 } | |
| $sequence_6 | hex | { 741c 50 ff15???????? 85c0 7511 8b4604 3d58b74e00 } | |
| $sequence_7 | hex | { b033 c0c745 ec 07 0000 00894de86689 45 } | |
| $sequence_8 | hex | { c684245403000077 e8???????? c684245003000078 83bc24f001000010 8b8424dc010000 7307 8d8424dc010000 } | |
| $sequence_9 | hex | { ffd6 89857cbdffff 3bc3 0f8451010000 8d8548bdffff 50 8d8540bdffff } |
Condition
7 of them and filesize < 294912In plain words (Heuristic)
- The file must be smaller than 294912 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
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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: d9d0bea0-ccef-5861-9dfa-fac7d2ebaa34
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
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