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MALPEDIA_Win_Artra_Auto

autogenerated rule brought to you by yara-signator

MalwareArtraMalpedia 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: Artra.

It defines 26 patterns (0 text, 26 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-artra-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Artra_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "eb12c6f9-dac9-5b66-aa45-bdd20c909283"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.artra"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.artra_auto.yar#L1-L267"
		license_url = "N/A"
		logic_hash = "473effce9bb07cb752c362a0c1099bfec79c8ed23316cdeddeb5a35e18fbc237"
		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 = { 51 8bc6 57 33c9 8d7801 8da42400000000 8a10 }
		$sequence_1 = { 5d 5b 8b442410 5f 5e 83c41c }
		$sequence_2 = { 2bc7 3bc8 72e3 8bc6 8d5001 5f 8a08 }
		$sequence_3 = { 800431f3 8bc6 41 8d7801 8d9b00000000 8a10 40 }
		$sequence_4 = { 83c41c c21000 5f 33c0 5e }
		$sequence_5 = { 5f 8a08 40 84c9 75f9 2bc2 880c30 }
		$sequence_6 = { 53 8b1d???????? 55 8b2d???????? 90 }
		$sequence_7 = { 8a08 880a 40 42 84c9 75f6 e8???????? }
		$sequence_8 = { bb0f000000 895c2468 897c2464 c644245400 3974244c 720d }
		$sequence_9 = { 8b4c2414 51 ff15???????? 8d842488030000 8bc8 }
		$sequence_10 = { 8d54241c 52 ffd7 85c0 75cc 5d 5b }
		$sequence_11 = { 8d442414 50 ffd7 85c0 7445 53 8b1d???????? }
		$sequence_12 = { ff15???????? 8bf8 85ff 0f8488000000 6a00 57 ff15???????? }
		$sequence_13 = { 57 ff15???????? 6a6d 56 ff15???????? 8bf0 }
		$sequence_14 = { 2bc2 03fb 8a4f01 47 84c9 }
		$sequence_15 = { 85f6 0f8665fdffff 83f910 8bc8 7304 8d4c2418 8b542428 }
		$sequence_16 = { 8b2d???????? 90 8b542410 8d4c2410 51 56 }
		$sequence_17 = { 8b542418 88442410 88442415 8d84248c030000 50 6a00 }
		$sequence_18 = { 83c404 83c8ff 5e 83c408 c3 8b442404 }
		$sequence_19 = { 68???????? 68???????? 6802000080 c744242000200000 ff15???????? }
		$sequence_20 = { c1f905 83e01f c1e006 03048de03b4100 }
		$sequence_21 = { e8???????? 8be8 0fb605???????? fec8 }
		$sequence_22 = { 8b2d???????? 8b442410 8d542410 52 57 }
		$sequence_23 = { c744243478364000 ffd6 8d4c2404 51 89442434 }
		$sequence_24 = { 8b35???????? 6a6b 50 c744240c30000000 c744241003000000 c744241430124000 c744241800000000 }
		$sequence_25 = { 8bf8 e8???????? be???????? e8???????? be???????? e8???????? }

	condition:
		7 of them and filesize < 811008
}

Strings (26 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 51 8bc6 57 33c9 8d7801 8da42400000000 8a10 }
$sequence_1hex{ 5d 5b 8b442410 5f 5e 83c41c }
$sequence_2hex{ 2bc7 3bc8 72e3 8bc6 8d5001 5f 8a08 }
$sequence_3hex{ 800431f3 8bc6 41 8d7801 8d9b00000000 8a10 40 }
$sequence_4hex{ 83c41c c21000 5f 33c0 5e }
$sequence_5hex{ 5f 8a08 40 84c9 75f9 2bc2 880c30 }
$sequence_6hex{ 53 8b1d???????? 55 8b2d???????? 90 }
$sequence_7hex{ 8a08 880a 40 42 84c9 75f6 e8???????? }
$sequence_8hex{ bb0f000000 895c2468 897c2464 c644245400 3974244c 720d }
$sequence_9hex{ 8b4c2414 51 ff15???????? 8d842488030000 8bc8 }
$sequence_10hex{ 8d54241c 52 ffd7 85c0 75cc 5d 5b }
$sequence_11hex{ 8d442414 50 ffd7 85c0 7445 53 8b1d???????? }
$sequence_12hex{ ff15???????? 8bf8 85ff 0f8488000000 6a00 57 ff15???????? }
$sequence_13hex{ 57 ff15???????? 6a6d 56 ff15???????? 8bf0 }
$sequence_14hex{ 2bc2 03fb 8a4f01 47 84c9 }
$sequence_15hex{ 85f6 0f8665fdffff 83f910 8bc8 7304 8d4c2418 8b542428 }
$sequence_16hex{ 8b2d???????? 90 8b542410 8d4c2410 51 56 }
$sequence_17hex{ 8b542418 88442410 88442415 8d84248c030000 50 6a00 }
$sequence_18hex{ 83c404 83c8ff 5e 83c408 c3 8b442404 }
$sequence_19hex{ 68???????? 68???????? 6802000080 c744242000200000 ff15???????? }
$sequence_20hex{ c1f905 83e01f c1e006 03048de03b4100 }
$sequence_21hex{ e8???????? 8be8 0fb605???????? fec8 }
$sequence_22hex{ 8b2d???????? 8b442410 8d542410 52 57 }
$sequence_23hex{ c744243478364000 ffd6 8d4c2404 51 89442434 }
$sequence_24hex{ 8b35???????? 6a6b 50 c744240c30000000 c744241003000000 c744241430124000 c744241800000000 }
$sequence_25hex{ 8bf8 e8???????? be???????? e8???????? be???????? e8???????? }

Condition

7 of them and filesize < 811008

In plain words (Heuristic)

  • The file must be smaller than 811008 (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: eb12c6f9-dac9-5b66-aa45-bdd20c909283

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