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MALPEDIA_Win_Pteranodon_Auto

autogenerated rule brought to you by yara-signator

MalwarePteranodonMalpedia 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: Pteranodon.

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

Summary generated from the rule's metadata and condition.

Rule source

win-pteranodon-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Pteranodon_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "e93fb407-90ad-50a7-a006-e52b137b4dd4"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.pteranodon"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.pteranodon_auto.yar#L1-L179"
		license_url = "N/A"
		logic_hash = "737916054e2b7b0c780e102a99de5e901b3673ecd792a81881d53a8e87b91d79"
		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 = { e8???????? ff75b8 8b5db4 33c0 53 668906 ff75c0 }
		$sequence_1 = { 8b049db8690310 894dfc 837c0118ff 7543 57 e8???????? }
		$sequence_2 = { 0f8530ffffff b8ffff0000 0fb7c0 0fb7f0 8b55e8 83fa10 0f8288000000 }
		$sequence_3 = { e8???????? 83c8ff e9???????? 6a10 }
		$sequence_4 = { c1f906 56 57 6bf830 8b048db8690310 894df0 8b4c3818 }
		$sequence_5 = { 25f0070000 660f28a040314300 660f28b8302d4300 660f54f0 660f5cc6 }
		$sequence_6 = { ffd6 ffb5f8fdffff ffd6 33c0 e9???????? 6a00 6a00 }
		$sequence_7 = { 0f57c0 6a01 50 0f1145e8 }
		$sequence_8 = { 660f56fa 660fc5cc03 25ff000000 83c001 25fe010000 f20f593c8538f34200 660f122c8538f34200 }
		$sequence_9 = { 751b 33c9 380d00000000 740c 8d5101 8a01 }
		$sequence_10 = { 8d8d08f9ffff e8???????? 8d8da8f8ffff c645fc31 51 8bd0 }
		$sequence_11 = { 8d4ea0 e8???????? 8b4690 8b4004 c74430903c0d0310 }
		$sequence_12 = { 51 8bce e8???????? 83c408 56 ff15???????? 57 }
		$sequence_13 = { 57 68???????? ff35???????? 8d45e4 8bf9 }
		$sequence_14 = { c1f806 6bc938 8b0485e0874300 0fb6440828 83e040 5d c3 }
		$sequence_15 = { c645fc07 8b85d4f8ffff c7851cf9ffff0f000000 c78518f9ffff00000000 c68508f9ffff00 83f810 7213 }

	condition:
		7 of them and filesize < 499712
}

Strings (16 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ e8???????? ff75b8 8b5db4 33c0 53 668906 ff75c0 }
$sequence_1hex{ 8b049db8690310 894dfc 837c0118ff 7543 57 e8???????? }
$sequence_2hex{ 0f8530ffffff b8ffff0000 0fb7c0 0fb7f0 8b55e8 83fa10 0f8288000000 }
$sequence_3hex{ e8???????? 83c8ff e9???????? 6a10 }
$sequence_4hex{ c1f906 56 57 6bf830 8b048db8690310 894df0 8b4c3818 }
$sequence_5hex{ 25f0070000 660f28a040314300 660f28b8302d4300 660f54f0 660f5cc6 }
$sequence_6hex{ ffd6 ffb5f8fdffff ffd6 33c0 e9???????? 6a00 6a00 }
$sequence_7hex{ 0f57c0 6a01 50 0f1145e8 }
$sequence_8hex{ 660f56fa 660fc5cc03 25ff000000 83c001 25fe010000 f20f593c8538f34200 660f122c8538f34200 }
$sequence_9hex{ 751b 33c9 380d00000000 740c 8d5101 8a01 }
$sequence_10hex{ 8d8d08f9ffff e8???????? 8d8da8f8ffff c645fc31 51 8bd0 }
$sequence_11hex{ 8d4ea0 e8???????? 8b4690 8b4004 c74430903c0d0310 }
$sequence_12hex{ 51 8bce e8???????? 83c408 56 ff15???????? 57 }
$sequence_13hex{ 57 68???????? ff35???????? 8d45e4 8bf9 }
$sequence_14hex{ c1f806 6bc938 8b0485e0874300 0fb6440828 83e040 5d c3 }
$sequence_15hex{ c645fc07 8b85d4f8ffff c7851cf9ffff0f000000 c78518f9ffff00000000 c68508f9ffff00 83f810 7213 }

Condition

7 of them and filesize < 499712

In plain words (Heuristic)

  • The file must be smaller than 499712 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

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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: e93fb407-90ad-50a7-a006-e52b137b4dd4

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