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MALPEDIA_Win_Tokyox_Auto

autogenerated rule brought to you by yara-signator

MalwareTokyoxMalpedia 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: Tokyox.

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

Summary generated from the rule's metadata and condition.

Rule source

win-tokyox-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Tokyox_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "b462a8a0-f28a-5712-a990-5092edb8777f"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.tokyox"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.tokyox_auto.yar#L1-L120"
		license_url = "N/A"
		logic_hash = "bb3a8a4224c473eeac74ab6318474ce515ef18ff1b0ab86de8b1da62cb868436"
		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 = { c78550ffffff44000000 51 33c0 c7857cffffff01010000 837df010 }
		$sequence_1 = { 50 ffd6 c7470400000000 8b07 85c0 0f8405feffff 50 }
		$sequence_2 = { 6a00 68e9fd0000 ff15???????? 894508 33db 40 b902000000 }
		$sequence_3 = { ff15???????? 83f8ff 7487 5f 5e }
		$sequence_4 = { 83f808 8975b0 8b45fc 0f43cb }
		$sequence_5 = { 50 894508 e8???????? 8b33 }
		$sequence_6 = { 8b451c 83c404 8b00 85c0 7428 50 e8???????? }
		$sequence_7 = { 33f6 0f57c0 6a20 53 }
		$sequence_8 = { 0f84a4010000 50 e9???????? 8b1d???????? 68fe010000 8d85ecfdffff }
		$sequence_9 = { 68fe010000 8d44244c 6a00 50 e8???????? 83c40c 8d442410 }

	condition:
		7 of them and filesize < 237568
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ c78550ffffff44000000 51 33c0 c7857cffffff01010000 837df010 }
$sequence_1hex{ 50 ffd6 c7470400000000 8b07 85c0 0f8405feffff 50 }
$sequence_2hex{ 6a00 68e9fd0000 ff15???????? 894508 33db 40 b902000000 }
$sequence_3hex{ ff15???????? 83f8ff 7487 5f 5e }
$sequence_4hex{ 83f808 8975b0 8b45fc 0f43cb }
$sequence_5hex{ 50 894508 e8???????? 8b33 }
$sequence_6hex{ 8b451c 83c404 8b00 85c0 7428 50 e8???????? }
$sequence_7hex{ 33f6 0f57c0 6a20 53 }
$sequence_8hex{ 0f84a4010000 50 e9???????? 8b1d???????? 68fe010000 8d85ecfdffff }
$sequence_9hex{ 68fe010000 8d44244c 6a00 50 e8???????? 83c40c 8d442410 }

Condition

7 of them and filesize < 237568

In plain words (Heuristic)

  • The file must be smaller than 237568 (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: b462a8a0-f28a-5712-a990-5092edb8777f

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