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MALPEDIA_Win_Ahtapot_Auto

autogenerated rule brought to you by yara-signator

MalwareAhtapotMalpedia 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: Ahtapot.

It defines 10 patterns (0 text, 10 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-ahtapot-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Ahtapot_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "0de48784-0e8e-5edf-a0de-2e4389e99a58"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.ahtapot"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.ahtapot_auto.yar#L1-L129"
		license_url = "N/A"
		logic_hash = "de143e832fbf5d044cd300629d503d5d9e4691647c9cadb64a0821350f4cddf1"
		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 = { 8d83cc100000 50 8d83b40a0000 33d2 50 6689944bcc100000 8d8bbc0c0000 }
		$sequence_1 = { 83c418 8d8d8cf1ffff 51 8d9544f1ffff 52 6a00 6a00 }
		$sequence_2 = { 68???????? 51 ffd7 83c40c 80bbc712000000 }
		$sequence_3 = { 8a85fcebffff a810 0f8495000000 a804 0f858d000000 68???????? 8d8dacfeffff }
		$sequence_4 = { c78548ebffff44000000 c78574ebffff01000000 ff15???????? 8b8da8ebffff 8b95b0ebffff 8b85a4ebffff 51 }
		$sequence_5 = { c786a4af060094a74200 3d1e010000 7f0a 83ff1e 7f05 83fb13 7e0a }
		$sequence_6 = { 51 89b590c3ffff e8???????? 83c404 33d2 66399598d7ffff 7427 }
		$sequence_7 = { 7610 8b4608 8d80a8f14200 fe08 }
		$sequence_8 = { a3???????? ebd2 8b7b04 33f6 807f2c00 7509 8bc7 }
		$sequence_9 = { 50 ffd3 83c410 8d85e0f9ffff e8???????? 8d9590f7ffff 52 }

	condition:
		7 of them and filesize < 430080
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8d83cc100000 50 8d83b40a0000 33d2 50 6689944bcc100000 8d8bbc0c0000 }
$sequence_1hex{ 83c418 8d8d8cf1ffff 51 8d9544f1ffff 52 6a00 6a00 }
$sequence_2hex{ 68???????? 51 ffd7 83c40c 80bbc712000000 }
$sequence_3hex{ 8a85fcebffff a810 0f8495000000 a804 0f858d000000 68???????? 8d8dacfeffff }
$sequence_4hex{ c78548ebffff44000000 c78574ebffff01000000 ff15???????? 8b8da8ebffff 8b95b0ebffff 8b85a4ebffff 51 }
$sequence_5hex{ c786a4af060094a74200 3d1e010000 7f0a 83ff1e 7f05 83fb13 7e0a }
$sequence_6hex{ 51 89b590c3ffff e8???????? 83c404 33d2 66399598d7ffff 7427 }
$sequence_7hex{ 7610 8b4608 8d80a8f14200 fe08 }
$sequence_8hex{ a3???????? ebd2 8b7b04 33f6 807f2c00 7509 8bc7 }
$sequence_9hex{ 50 ffd3 83c410 8d85e0f9ffff e8???????? 8d9590f7ffff 52 }

Condition

7 of them and filesize < 430080

In plain words (Heuristic)

  • The file must be smaller than 430080 (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: 0de48784-0e8e-5edf-a0de-2e4389e99a58

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