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MALPEDIA_Win_Miniasp_Auto

autogenerated rule brought to you by yara-signator

MalwareMiniaspMalpedia 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: Miniasp.

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

Summary generated from the rule's metadata and condition.

Rule source

win-miniasp-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Miniasp_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "6cfa02ba-df4d-55d2-bb63-74f1f94f15c2"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.miniasp"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.miniasp_auto.yar#L1-L129"
		license_url = "N/A"
		logic_hash = "1ee105f2133cec94270e0aea10fd8c08f641fd091b26e4be16436f63bb16389c"
		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 = { 8b85e4feffff 8985e0feffff 8b85e4feffff 8a00 8885dffeffff ff85e4feffff 80bddffeffff00 }
		$sequence_1 = { 2b45fc 48 3d00080000 7e07 }
		$sequence_2 = { 894ddc 8365ec00 8365fc00 8b45dc 83b81804000000 7515 c745e4b4d84000 }
		$sequence_3 = { 59 8d7de4 8b7508 33c0 f3a7 7408 83c8ff }
		$sequence_4 = { 735e 8b45f4 0345e4 8b4dfc 8a00 }
		$sequence_5 = { 83c40c 8d45d8 50 e8???????? 59 8b4588 8b4804 }
		$sequence_6 = { c645fb00 8365f400 8a45fb d0e8 8845fb e9???????? c9 }
		$sequence_7 = { 8b45ec ffb098000000 6a00 8b45ec ffb0a4000000 8b45ec ffb094000000 }
		$sequence_8 = { 48 8945cc 8b45cc 8a4001 8845cb ff45cc 807dcb00 }
		$sequence_9 = { 75e3 8b8574ffffff 2b8570ffffff 898568ffffff 8b8568ffffff 8945a4 837da402 }

	condition:
		7 of them and filesize < 139264
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8b85e4feffff 8985e0feffff 8b85e4feffff 8a00 8885dffeffff ff85e4feffff 80bddffeffff00 }
$sequence_1hex{ 2b45fc 48 3d00080000 7e07 }
$sequence_2hex{ 894ddc 8365ec00 8365fc00 8b45dc 83b81804000000 7515 c745e4b4d84000 }
$sequence_3hex{ 59 8d7de4 8b7508 33c0 f3a7 7408 83c8ff }
$sequence_4hex{ 735e 8b45f4 0345e4 8b4dfc 8a00 }
$sequence_5hex{ 83c40c 8d45d8 50 e8???????? 59 8b4588 8b4804 }
$sequence_6hex{ c645fb00 8365f400 8a45fb d0e8 8845fb e9???????? c9 }
$sequence_7hex{ 8b45ec ffb098000000 6a00 8b45ec ffb0a4000000 8b45ec ffb094000000 }
$sequence_8hex{ 48 8945cc 8b45cc 8a4001 8845cb ff45cc 807dcb00 }
$sequence_9hex{ 75e3 8b8574ffffff 2b8570ffffff 898568ffffff 8b8568ffffff 8945a4 837da402 }

Condition

7 of them and filesize < 139264

In plain words (Heuristic)

  • The file must be smaller than 139264 (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: 6cfa02ba-df4d-55d2-bb63-74f1f94f15c2

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