YARA · Malpedia signator rules
MALPEDIA_Win_Syscon_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: Syscon.
It defines 16 patterns (0 text, 16 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-syscon-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Syscon_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "7eb8abcd-342c-50c3-89c9-ff4cd5248368"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.syscon"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.syscon_auto.yar#L1-L176"
= "N/A"
= "cd8f7f985388b766a488de21cbd16adb9d28f56e0a8adca4ec1abebcb3805f91"
= 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 = { 6a01 68???????? 8d4c2440 51 }
$sequence_1 = { ff15???????? 6804010000 68???????? 53 ff15???????? }
$sequence_2 = { 8935???????? c705????????10000000 8935???????? ffd7 8b0d???????? }
$sequence_3 = { 68???????? 68???????? 6a15 68???????? 52 ff15???????? a3???????? }
$sequence_4 = { 51 8d942414040000 68???????? 52 ff15???????? 83c40c 6a00 }
$sequence_5 = { ff15???????? 8bf8 83ffff 0f84f9000000 6a00 57 }
$sequence_6 = { 6a00 8d842414040000 50 ff15???????? 68e8030000 ffd6 }
$sequence_7 = { 897df8 8b45f4 03c6 3b450c 0f8c56ffffff }
$sequence_8 = { 488d0d03490000 ff15???????? 488d542420 488d0df1480000 }
$sequence_9 = { ff15???????? 488bcf ff15???????? bf04010000 488d4c2440 448bc7 }
$sequence_10 = { 488d1566ffffff ff15???????? 8d4f02 bab80b0000 488905???????? e8???????? 8d5f01 }
$sequence_11 = { 5d c3 41bd04010000 488d8d80040000 33d2 }
$sequence_12 = { 488905???????? 4885c0 0f8475f7ffff 488d4c2420 4c8bc6 33d2 e8???????? }
$sequence_13 = { 33d2 e8???????? 488d542440 488d8c2450010000 4c8bcd 4c8bc6 ff15???????? }
$sequence_14 = { e8???????? 488d8d60010000 ff15???????? 418bdc 418bcf ff15???????? }
$sequence_15 = { 4c8bc6 33d2 e8???????? 488d0dc6510000 ff15???????? 488d542420 488d0db4510000 }
condition:
7 of them and filesize < 120832
}
Strings (16 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 6a01 68???????? 8d4c2440 51 } | |
| $sequence_1 | hex | { ff15???????? 6804010000 68???????? 53 ff15???????? } | |
| $sequence_2 | hex | { 8935???????? c705????????10000000 8935???????? ffd7 8b0d???????? } | |
| $sequence_3 | hex | { 68???????? 68???????? 6a15 68???????? 52 ff15???????? a3???????? } | |
| $sequence_4 | hex | { 51 8d942414040000 68???????? 52 ff15???????? 83c40c 6a00 } | |
| $sequence_5 | hex | { ff15???????? 8bf8 83ffff 0f84f9000000 6a00 57 } | |
| $sequence_6 | hex | { 6a00 8d842414040000 50 ff15???????? 68e8030000 ffd6 } | |
| $sequence_7 | hex | { 897df8 8b45f4 03c6 3b450c 0f8c56ffffff } | |
| $sequence_8 | hex | { 488d0d03490000 ff15???????? 488d542420 488d0df1480000 } | |
| $sequence_9 | hex | { ff15???????? 488bcf ff15???????? bf04010000 488d4c2440 448bc7 } | |
| $sequence_10 | hex | { 488d1566ffffff ff15???????? 8d4f02 bab80b0000 488905???????? e8???????? 8d5f01 } | |
| $sequence_11 | hex | { 5d c3 41bd04010000 488d8d80040000 33d2 } | |
| $sequence_12 | hex | { 488905???????? 4885c0 0f8475f7ffff 488d4c2420 4c8bc6 33d2 e8???????? } | |
| $sequence_13 | hex | { 33d2 e8???????? 488d542440 488d8c2450010000 4c8bcd 4c8bc6 ff15???????? } | |
| $sequence_14 | hex | { e8???????? 488d8d60010000 ff15???????? 418bdc 418bcf ff15???????? } | |
| $sequence_15 | hex | { 4c8bc6 33d2 e8???????? 488d0dc6510000 ff15???????? 488d542420 488d0db4510000 } |
Condition
7 of them and filesize < 120832In plain words (Heuristic)
- The file must be smaller than 120832 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: 7eb8abcd-342c-50c3-89c9-ff4cd5248368
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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