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MALPEDIA_Win_Shakti_Auto

autogenerated rule brought to you by yara-signator

MalwareShaktiMalpedia 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: Shakti.

It defines 16 patterns (0 text, 16 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-shakti-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Shakti_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "1743fd4e-953a-51a5-918d-416d515e0593"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.shakti"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.shakti_auto.yar#L1-L175"
		license_url = "N/A"
		logic_hash = "97bf351c0e8aee24a7919bc62c51ec3706084eeee07b396176aa22730824e170"
		score = 75
		quality = 75
		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 = { 0345bc 8945bc 8b4db8 83c101 894db8 8b55b8 }
		$sequence_1 = { 8b55e0 8b45d8 03420c 8945cc 8b4de0 8b55c0 }
		$sequence_2 = { 8b4dc0 83e901 894dc0 ebb0 648b1530000000 8955d8 8b45d8 }
		$sequence_3 = { 03513c 8955d0 8b45d0 83c078 8945ec 8b4dec }
		$sequence_4 = { 0311 8955fc 8b45fc 83780c00 0f84e2000000 8b4dfc 8b55d8 }
		$sequence_5 = { 0311 8955dc eb14 817de854caaf91 750b }
		$sequence_6 = { 668b45c8 6683e801 668945c8 0fb74dc8 85c9 75b1 }
		$sequence_7 = { 0f848b000000 8b4de0 8b5128 8955cc 8b45e0 668b4824 }
		$sequence_8 = { 837dd400 a1???????? 7423 c700b8000000 }
		$sequence_9 = { 33ff 8db7d0a34000 ff36 e8???????? 83c704 }
		$sequence_10 = { 8d0433 50 ff759c ff15???????? 85c0 740d 837d9000 }
		$sequence_11 = { 83c410 85c0 0f85a9000000 2145f8 85db 767f 8b4df8 }
		$sequence_12 = { 7507 66837d6c02 eb0b 837de002 7516 }
		$sequence_13 = { 8b7de4 8d45e8 50 6a40 }
		$sequence_14 = { 59 e8???????? 83c40c 85c0 7408 ff75f0 e9???????? }
		$sequence_15 = { 894588 8b85c0000000 be05010000 56 894584 }

	condition:
		7 of them and filesize < 191488
}

Strings (16 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 0345bc 8945bc 8b4db8 83c101 894db8 8b55b8 }
$sequence_1hex{ 8b55e0 8b45d8 03420c 8945cc 8b4de0 8b55c0 }
$sequence_2hex{ 8b4dc0 83e901 894dc0 ebb0 648b1530000000 8955d8 8b45d8 }
$sequence_3hex{ 03513c 8955d0 8b45d0 83c078 8945ec 8b4dec }
$sequence_4hex{ 0311 8955fc 8b45fc 83780c00 0f84e2000000 8b4dfc 8b55d8 }
$sequence_5hex{ 0311 8955dc eb14 817de854caaf91 750b }
$sequence_6hex{ 668b45c8 6683e801 668945c8 0fb74dc8 85c9 75b1 }
$sequence_7hex{ 0f848b000000 8b4de0 8b5128 8955cc 8b45e0 668b4824 }
$sequence_8hex{ 837dd400 a1???????? 7423 c700b8000000 }
$sequence_9hex{ 33ff 8db7d0a34000 ff36 e8???????? 83c704 }
$sequence_10hex{ 8d0433 50 ff759c ff15???????? 85c0 740d 837d9000 }
$sequence_11hex{ 83c410 85c0 0f85a9000000 2145f8 85db 767f 8b4df8 }
$sequence_12hex{ 7507 66837d6c02 eb0b 837de002 7516 }
$sequence_13hex{ 8b7de4 8d45e8 50 6a40 }
$sequence_14hex{ 59 e8???????? 83c40c 85c0 7408 ff75f0 e9???????? }
$sequence_15hex{ 894588 8b85c0000000 be05010000 56 894584 }

Condition

7 of them and filesize < 191488

In plain words (Heuristic)

  • The file must be smaller than 191488 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

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Open in editor

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: 1743fd4e-953a-51a5-918d-416d515e0593

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