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MALPEDIA_Win_Fast_Pos_Auto

autogenerated rule brought to you by yara-signator

MalwareFast PosMalpedia 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: Fast Pos.

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

Summary generated from the rule's metadata and condition.

Rule source

win-fast-pos-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Fast_Pos_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "ade8a502-6d2a-505f-913b-4ccf6f60d01b"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.fast_pos"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.fast_pos_auto.yar#L1-L124"
		license_url = "N/A"
		logic_hash = "4198b8f4efada69a296e0a68647a012e73820aa794b97f722c136001b60ea22b"
		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 = { c745fc00000000 50 68???????? 56 c785e8feffff01000000 }
		$sequence_1 = { c785e8feffff01000000 e8???????? 83c40c 8bc6 8b4df4 64890d00000000 59 }
		$sequence_2 = { 7d12 52 8d8de0feffff e8???????? }
		$sequence_3 = { e8???????? 8b95e4feffff 83c408 85c0 0f9485ebfeffff 83c2f0 83cfff }
		$sequence_4 = { 68ffff1f00 ff15???????? 6a00 50 }
		$sequence_5 = { 8d85e4feffff c745fc00000000 50 8d85ecfeffff c785e8feffff00000000 50 }
		$sequence_6 = { 751e 8b4d08 57 e8???????? 8b4508 5f 5e }
		$sequence_7 = { c785e4feffff04010000 ff15???????? 85c0 7558 8d85e4feffff 50 }
		$sequence_8 = { 6a64 8d4580 c745fc00000000 50 89b578ffffff c7857cffffff00000000 ff15???????? }
		$sequence_9 = { 50 8d85ecfeffff c785e8feffff00000000 50 89b5e0feffff c785e4feffff04010000 ff15???????? }

	condition:
		7 of them and filesize < 327680
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ c745fc00000000 50 68???????? 56 c785e8feffff01000000 }
$sequence_1hex{ c785e8feffff01000000 e8???????? 83c40c 8bc6 8b4df4 64890d00000000 59 }
$sequence_2hex{ 7d12 52 8d8de0feffff e8???????? }
$sequence_3hex{ e8???????? 8b95e4feffff 83c408 85c0 0f9485ebfeffff 83c2f0 83cfff }
$sequence_4hex{ 68ffff1f00 ff15???????? 6a00 50 }
$sequence_5hex{ 8d85e4feffff c745fc00000000 50 8d85ecfeffff c785e8feffff00000000 50 }
$sequence_6hex{ 751e 8b4d08 57 e8???????? 8b4508 5f 5e }
$sequence_7hex{ c785e4feffff04010000 ff15???????? 85c0 7558 8d85e4feffff 50 }
$sequence_8hex{ 6a64 8d4580 c745fc00000000 50 89b578ffffff c7857cffffff00000000 ff15???????? }
$sequence_9hex{ 50 8d85ecfeffff c785e8feffff00000000 50 89b5e0feffff c785e4feffff04010000 ff15???????? }

Condition

7 of them and filesize < 327680

In plain words (Heuristic)

  • The file must be smaller than 327680 (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: ade8a502-6d2a-505f-913b-4ccf6f60d01b

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