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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:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "f8a2c779-4af9-54c6-9e7e-1eb974b02d90"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.sakula_rat_auto.yar#L1-L234"
		license_url = "N/A"
		logic_hash = "48fea957ae9d893f389dc987b89ecf81d70b75d29b1ca5347ce56ebc138b296a"
		score = 75
		quality = 73
		tags = "FILE"
		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"

	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)

IdentifierTypeValueModifiers
$sequence_0hex{ 6a00 6800010000 6a00 6a00 68???????? }
$sequence_1hex{ 6a00 56 e8???????? 8b3d???????? 83c410 6a00 }
$sequence_2hex{ 83f81e 7cf4 eb05 41 3bce 72dd }
$sequence_3hex{ 56 6a01 8bd8 57 53 e8???????? 56 }
$sequence_4hex{ 83f804 7d07 b803000000 eb1b e8???????? 83f801 7507 }
$sequence_5hex{ 7407 b801000000 eb2c e8???????? 83f804 7d07 }
$sequence_6hex{ 53 6aff 56 6a00 6a01 }
$sequence_7hex{ 56 e8???????? 8d7e10 8ad8 57 8bc7 e8???????? }
$sequence_8hex{ ff15???????? 85c0 0f84ae000000 488bcb }
$sequence_9hex{ 83c410 31c0 40 eb02 }
$sequence_10hex{ 8903 83c304 e8???????? 8903 83c304 53 }
$sequence_11hex{ e8???????? eb88 ff75e4 ff75e4 e8???????? }
$sequence_12hex{ ff15???????? 488b4c2458 8d53f1 ff15???????? 488b4c2458 ff15???????? 488b9c24c0080000 }
$sequence_13hex{ 31c0 8a040b 3c00 7409 38d0 7405 }
$sequence_14hex{ eb0d eb0b ff35???????? e8???????? 68e8030000 e8???????? ff75f4 }
$sequence_15hex{ 83c004 8b5df8 8918 83c004 50 6a10 68???????? }
$sequence_16hex{ 83f800 0f8476010000 6a02 6a00 }
$sequence_17hex{ 4c8bc6 448bc8 33d2 33c9 ff15???????? 8bf8 }
$sequence_18hex{ 41b804010000 48890d???????? ff15???????? ff15???????? 83f801 }
$sequence_19hex{ 33d2 488bc8 448bc7 488905???????? }
$sequence_20hex{ 33d2 448bc8 33c9 897c2428 48895c2420 ff15???????? 33d2 }
$sequence_21hex{ 488b4dc7 488b01 ff90a8000000 3bc6 740a 488d4de7 }
$sequence_22hex{ 55 488dac2450f8ffff 4881ecb0080000 33d2 }

Condition

7 of them and filesize < 229376

In 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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References

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)

Original rule

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

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260422
malpedia_hasha182e35da64e6d71cb55f125c4d4225196523f14
malpedia_version20260504
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE