YARA · Malpedia signator rules
MALPEDIA_Win_Sakula_Rat_Auto
autogenerated rule brought to you by yara-signator
MalwareSakula RatMalpedia 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 / 73
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Sakula Rat.
It defines 23 patterns (0 text, 23 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-sakula-rat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Sakula_Rat_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "f8a2c779-4af9-54c6-9e7e-1eb974b02d90"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.sakula_rat_auto.yar#L1-L234"
= "N/A"
= "48fea957ae9d893f389dc987b89ecf81d70b75d29b1ca5347ce56ebc138b296a"
= 75
= 73
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { 6a00 6800010000 6a00 6a00 68???????? }
$sequence_1 = { 6a00 56 e8???????? 8b3d???????? 83c410 6a00 }
$sequence_2 = { 83f81e 7cf4 eb05 41 3bce 72dd }
$sequence_3 = { 56 6a01 8bd8 57 53 e8???????? 56 }
$sequence_4 = { 83f804 7d07 b803000000 eb1b e8???????? 83f801 7507 }
$sequence_5 = { 7407 b801000000 eb2c e8???????? 83f804 7d07 }
$sequence_6 = { 53 6aff 56 6a00 6a01 }
$sequence_7 = { 56 e8???????? 8d7e10 8ad8 57 8bc7 e8???????? }
$sequence_8 = { ff15???????? 85c0 0f84ae000000 488bcb }
$sequence_9 = { 83c410 31c0 40 eb02 }
$sequence_10 = { 8903 83c304 e8???????? 8903 83c304 53 }
$sequence_11 = { e8???????? eb88 ff75e4 ff75e4 e8???????? }
$sequence_12 = { ff15???????? 488b4c2458 8d53f1 ff15???????? 488b4c2458 ff15???????? 488b9c24c0080000 }
$sequence_13 = { 31c0 8a040b 3c00 7409 38d0 7405 }
$sequence_14 = { eb0d eb0b ff35???????? e8???????? 68e8030000 e8???????? ff75f4 }
$sequence_15 = { 83c004 8b5df8 8918 83c004 50 6a10 68???????? }
$sequence_16 = { 83f800 0f8476010000 6a02 6a00 }
$sequence_17 = { 4c8bc6 448bc8 33d2 33c9 ff15???????? 8bf8 }
$sequence_18 = { 41b804010000 48890d???????? ff15???????? ff15???????? 83f801 }
$sequence_19 = { 33d2 488bc8 448bc7 488905???????? }
$sequence_20 = { 33d2 448bc8 33c9 897c2428 48895c2420 ff15???????? 33d2 }
$sequence_21 = { 488b4dc7 488b01 ff90a8000000 3bc6 740a 488d4de7 }
$sequence_22 = { 55 488dac2450f8ffff 4881ecb0080000 33d2 }
condition:
7 of them and filesize < 229376
}
Strings (23 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 6a00 6800010000 6a00 6a00 68???????? } | |
| $sequence_1 | hex | { 6a00 56 e8???????? 8b3d???????? 83c410 6a00 } | |
| $sequence_2 | hex | { 83f81e 7cf4 eb05 41 3bce 72dd } | |
| $sequence_3 | hex | { 56 6a01 8bd8 57 53 e8???????? 56 } | |
| $sequence_4 | hex | { 83f804 7d07 b803000000 eb1b e8???????? 83f801 7507 } | |
| $sequence_5 | hex | { 7407 b801000000 eb2c e8???????? 83f804 7d07 } | |
| $sequence_6 | hex | { 53 6aff 56 6a00 6a01 } | |
| $sequence_7 | hex | { 56 e8???????? 8d7e10 8ad8 57 8bc7 e8???????? } | |
| $sequence_8 | hex | { ff15???????? 85c0 0f84ae000000 488bcb } | |
| $sequence_9 | hex | { 83c410 31c0 40 eb02 } | |
| $sequence_10 | hex | { 8903 83c304 e8???????? 8903 83c304 53 } | |
| $sequence_11 | hex | { e8???????? eb88 ff75e4 ff75e4 e8???????? } | |
| $sequence_12 | hex | { ff15???????? 488b4c2458 8d53f1 ff15???????? 488b4c2458 ff15???????? 488b9c24c0080000 } | |
| $sequence_13 | hex | { 31c0 8a040b 3c00 7409 38d0 7405 } | |
| $sequence_14 | hex | { eb0d eb0b ff35???????? e8???????? 68e8030000 e8???????? ff75f4 } | |
| $sequence_15 | hex | { 83c004 8b5df8 8918 83c004 50 6a10 68???????? } | |
| $sequence_16 | hex | { 83f800 0f8476010000 6a02 6a00 } | |
| $sequence_17 | hex | { 4c8bc6 448bc8 33d2 33c9 ff15???????? 8bf8 } | |
| $sequence_18 | hex | { 41b804010000 48890d???????? ff15???????? ff15???????? 83f801 } | |
| $sequence_19 | hex | { 33d2 488bc8 448bc7 488905???????? } | |
| $sequence_20 | hex | { 33d2 448bc8 33c9 897c2428 48895c2420 ff15???????? 33d2 } | |
| $sequence_21 | hex | { 488b4dc7 488b01 ff90a8000000 3bc6 740a 488d4de7 } | |
| $sequence_22 | hex | { 55 488dac2450f8ffff 4881ecb0080000 33d2 } |
Condition
7 of them and filesize < 229376In plain words (Heuristic)
- The file must be smaller than 229376 (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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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: f8a2c779-4af9-54c6-9e7e-1eb974b02d90
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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