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MALPEDIA_Win_October_Seventh_Auto

autogenerated rule brought to you by yara-signator

MalwareOctober SeventhMalpedia 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: October Seventh.

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

Summary generated from the rule's metadata and condition.

Rule source

win-october-seventh-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_October_Seventh_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "df17ccb1-ed0e-5b55-8d0f-b866790b20ff"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.october_seventh"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.october_seventh_auto.yar#L1-L125"
		license_url = "N/A"
		logic_hash = "8dff7d768c355bc200b087342427514c6a8936d5b58282b0cb8753f308701a1f"
		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 = { 752f 8b4dfc 8b5010 0fb7c9 3bca 7219 8b4014 }
		$sequence_1 = { 50 e8???????? 8bc6 c1e002 50 8b8598f8ffff 0fb7048544cb4100 }
		$sequence_2 = { 7211 8b45fc 8a0e 46 8b0485d08fd500 884c072b }
		$sequence_3 = { 83e03f 6bc838 8b0495d08fd500 8a5c0828 80e3fe }
		$sequence_4 = { 6bf838 8955fc 8b0495d08fd500 8945f8 }
		$sequence_5 = { 58 ebdc 8b55f8 8b1495d08fd500 }
		$sequence_6 = { 47 f7fe 8b45f4 8a0402 8b55f8 32040a 8801 }
		$sequence_7 = { 3bc8 1bc0 23c1 83c008 5d c3 8b04c5fc8e4100 }
		$sequence_8 = { c745b814dd4100 c745c801000000 50 ffd7 5b 85c0 7470 }
		$sequence_9 = { 56 ff15???????? 85c0 75c5 56 ff15???????? 8d442410 }

	condition:
		7 of them and filesize < 19859456
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 752f 8b4dfc 8b5010 0fb7c9 3bca 7219 8b4014 }
$sequence_1hex{ 50 e8???????? 8bc6 c1e002 50 8b8598f8ffff 0fb7048544cb4100 }
$sequence_2hex{ 7211 8b45fc 8a0e 46 8b0485d08fd500 884c072b }
$sequence_3hex{ 83e03f 6bc838 8b0495d08fd500 8a5c0828 80e3fe }
$sequence_4hex{ 6bf838 8955fc 8b0495d08fd500 8945f8 }
$sequence_5hex{ 58 ebdc 8b55f8 8b1495d08fd500 }
$sequence_6hex{ 47 f7fe 8b45f4 8a0402 8b55f8 32040a 8801 }
$sequence_7hex{ 3bc8 1bc0 23c1 83c008 5d c3 8b04c5fc8e4100 }
$sequence_8hex{ c745b814dd4100 c745c801000000 50 ffd7 5b 85c0 7470 }
$sequence_9hex{ 56 ff15???????? 85c0 75c5 56 ff15???????? 8d442410 }

Condition

7 of them and filesize < 19859456

In plain words (Heuristic)

  • The file must be smaller than 19859456 (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: df17ccb1-ed0e-5b55-8d0f-b866790b20ff

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