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MALPEDIA_Win_Phorpiex_Auto

autogenerated rule brought to you by yara-signator

MalwarePhorpiexMalpedia 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 / 73

What this rule detects

autogenerated rule brought to you by yara-signator

Associated malware family: Phorpiex.

It defines 31 patterns (0 text, 31 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-phorpiex-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Phorpiex_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "1d354567-9f59-5789-85ab-bc6421356506"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.phorpiex"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.phorpiex_auto.yar#L1-L289"
		license_url = "N/A"
		logic_hash = "8a18b4fa1b41f6fd5fa83c797ce891de8d2d28d05c11921b76b5a67e4c3f417c"
		score = 75
		quality = 73
		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 = { 6a00 ff15???????? ff15???????? 50 e8???????? }
		$sequence_1 = { ff15???????? 85c0 740f 6a07 }
		$sequence_2 = { ff15???????? 85c0 741f 6880000000 }
		$sequence_3 = { 6a00 6a00 6a20 6a00 6a00 6a00 8b5508 }
		$sequence_4 = { e8???????? 83c410 6a00 6a02 6a02 6a00 6a00 }
		$sequence_5 = { 50 e8???????? 83c404 e8???????? e8???????? ff15???????? 6a00 }
		$sequence_6 = { 6a01 6a00 68???????? e8???????? 83c40c 33c0 }
		$sequence_7 = { 68???????? ff15???????? 8d85f8fdffff 50 68???????? }
		$sequence_8 = { 6a00 6a00 682a800000 6a00 }
		$sequence_9 = { 52 683f000f00 6a00 68???????? 6802000080 ff15???????? 85c0 }
		$sequence_10 = { 6a01 ff15???????? ff15???????? b001 }
		$sequence_11 = { ff15???????? 6a00 ff15???????? 85c0 7418 ff15???????? }
		$sequence_12 = { 8811 8b4508 83c001 894508 e9???????? 8b4d08 c60100 }
		$sequence_13 = { 68???????? ff15???????? e9???????? 8d45fc 50 }
		$sequence_14 = { f7f9 81c210270000 52 e8???????? }
		$sequence_15 = { 0fb745fc 0fb74dc4 0fb6540dc8 0fb64405c8 33c2 0fb74dfc }
		$sequence_16 = { 837dfc00 7416 8b4df8 51 }
		$sequence_17 = { 837df800 7429 8b45f8 50 ff15???????? 8945fc 837dfc00 }
		$sequence_18 = { f7f9 52 ff15???????? 6a00 6a00 6a00 }
		$sequence_19 = { 7508 6a00 ff15???????? 6804010000 }
		$sequence_20 = { 6a21 50 e8???????? c60000 }
		$sequence_21 = { 50 e8???????? 59 59 85c0 0f85c0000000 }
		$sequence_22 = { 3d00010000 7504 83c8ff c3 }
		$sequence_23 = { 75de eb0a 85ff 740e 803e00 }
		$sequence_24 = { c744241400000000 e8???????? 6880000000 8d4c2438 6a00 }
		$sequence_25 = { 803800 7412 50 8d44242c 50 e8???????? }
		$sequence_26 = { 52 e8???????? 99 b960ea0000 }
		$sequence_27 = { 663bc2 72f7 53 33c0 56 }
		$sequence_28 = { 50 8d45ec 50 6805000020 }
		$sequence_29 = { 57 68e8030000 ff15???????? e8???????? be???????? }
		$sequence_30 = { 8d45f8 50 8d45e4 50 6805000020 }

	condition:
		7 of them and filesize < 2490368
}

Strings (31 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 6a00 ff15???????? ff15???????? 50 e8???????? }
$sequence_1hex{ ff15???????? 85c0 740f 6a07 }
$sequence_2hex{ ff15???????? 85c0 741f 6880000000 }
$sequence_3hex{ 6a00 6a00 6a20 6a00 6a00 6a00 8b5508 }
$sequence_4hex{ e8???????? 83c410 6a00 6a02 6a02 6a00 6a00 }
$sequence_5hex{ 50 e8???????? 83c404 e8???????? e8???????? ff15???????? 6a00 }
$sequence_6hex{ 6a01 6a00 68???????? e8???????? 83c40c 33c0 }
$sequence_7hex{ 68???????? ff15???????? 8d85f8fdffff 50 68???????? }
$sequence_8hex{ 6a00 6a00 682a800000 6a00 }
$sequence_9hex{ 52 683f000f00 6a00 68???????? 6802000080 ff15???????? 85c0 }
$sequence_10hex{ 6a01 ff15???????? ff15???????? b001 }
$sequence_11hex{ ff15???????? 6a00 ff15???????? 85c0 7418 ff15???????? }
$sequence_12hex{ 8811 8b4508 83c001 894508 e9???????? 8b4d08 c60100 }
$sequence_13hex{ 68???????? ff15???????? e9???????? 8d45fc 50 }
$sequence_14hex{ f7f9 81c210270000 52 e8???????? }
$sequence_15hex{ 0fb745fc 0fb74dc4 0fb6540dc8 0fb64405c8 33c2 0fb74dfc }
$sequence_16hex{ 837dfc00 7416 8b4df8 51 }
$sequence_17hex{ 837df800 7429 8b45f8 50 ff15???????? 8945fc 837dfc00 }
$sequence_18hex{ f7f9 52 ff15???????? 6a00 6a00 6a00 }
$sequence_19hex{ 7508 6a00 ff15???????? 6804010000 }
$sequence_20hex{ 6a21 50 e8???????? c60000 }
$sequence_21hex{ 50 e8???????? 59 59 85c0 0f85c0000000 }
$sequence_22hex{ 3d00010000 7504 83c8ff c3 }
$sequence_23hex{ 75de eb0a 85ff 740e 803e00 }
$sequence_24hex{ c744241400000000 e8???????? 6880000000 8d4c2438 6a00 }
$sequence_25hex{ 803800 7412 50 8d44242c 50 e8???????? }
$sequence_26hex{ 52 e8???????? 99 b960ea0000 }
$sequence_27hex{ 663bc2 72f7 53 33c0 56 }
$sequence_28hex{ 50 8d45ec 50 6805000020 }
$sequence_29hex{ 57 68e8030000 ff15???????? e8???????? be???????? }
$sequence_30hex{ 8d45f8 50 8d45e4 50 6805000020 }

Condition

7 of them and filesize < 2490368

In plain words (Heuristic)

  • The file must be smaller than 2490368 (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: 1d354567-9f59-5789-85ab-bc6421356506

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