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MALPEDIA_Win_Skyplex_Auto

autogenerated rule brought to you by yara-signator

MalwareSkyplexMalpedia 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: Skyplex.

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

Summary generated from the rule's metadata and condition.

Rule source

win-skyplex-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Skyplex_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "087dca5f-d631-5612-bd75-82c0d735f793"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.skyplex"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.skyplex_auto.yar#L1-L121"
		license_url = "N/A"
		logic_hash = "b55412a36eabe71f96854517e823836caf1f285d3ff56ec8f8e1708327797508"
		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 = { 52 e8???????? 83c408 85c0 7430 68???????? }
		$sequence_1 = { 68???????? 8d9538f7ffff 52 e8???????? 83c408 85c0 0f8490000000 }
		$sequence_2 = { 8d45fc 50 8d8d30ffffff 51 ff15???????? 8d9530ffffff 52 }
		$sequence_3 = { 85c0 0f85d0000000 68???????? 8d85b0f9ffff 50 e8???????? }
		$sequence_4 = { 89430c 8d4310 8d89649c4100 5a 668b31 }
		$sequence_5 = { 8d95b0f9ffff 52 e8???????? 83c408 85c0 }
		$sequence_6 = { 83c201 88953ff6ffff 8d8d38f6ffff e8???????? 0fb6853ff6ffff }
		$sequence_7 = { 752b e8???????? 0fb6d0 85d2 }
		$sequence_8 = { 8b36 8bce c1f905 8b0c8dc0af4100 83e61f c1e606 89040e }
		$sequence_9 = { c7851cf7ffff04000000 c78520f7ffffb0454100 c78524f7ffffe8454100 c78528f7ffff30464100 c7852cf7ffff80464100 }

	condition:
		7 of them and filesize < 262144
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 52 e8???????? 83c408 85c0 7430 68???????? }
$sequence_1hex{ 68???????? 8d9538f7ffff 52 e8???????? 83c408 85c0 0f8490000000 }
$sequence_2hex{ 8d45fc 50 8d8d30ffffff 51 ff15???????? 8d9530ffffff 52 }
$sequence_3hex{ 85c0 0f85d0000000 68???????? 8d85b0f9ffff 50 e8???????? }
$sequence_4hex{ 89430c 8d4310 8d89649c4100 5a 668b31 }
$sequence_5hex{ 8d95b0f9ffff 52 e8???????? 83c408 85c0 }
$sequence_6hex{ 83c201 88953ff6ffff 8d8d38f6ffff e8???????? 0fb6853ff6ffff }
$sequence_7hex{ 752b e8???????? 0fb6d0 85d2 }
$sequence_8hex{ 8b36 8bce c1f905 8b0c8dc0af4100 83e61f c1e606 89040e }
$sequence_9hex{ c7851cf7ffff04000000 c78520f7ffffb0454100 c78524f7ffffe8454100 c78528f7ffff30464100 c7852cf7ffff80464100 }

Condition

7 of them and filesize < 262144

In plain words (Heuristic)

  • The file must be smaller than 262144 (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: 087dca5f-d631-5612-bd75-82c0d735f793

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