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MALPEDIA_Win_Floki_Bot_Auto

autogenerated rule brought to you by yara-signator

MalwareFloki BotMalpedia 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: Floki Bot.

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

Summary generated from the rule's metadata and condition.

Rule source

win-floki-bot-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Floki_Bot_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "c572f0c5-c659-5641-95f6-92d41599c8c4"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.floki_bot"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.floki_bot_auto.yar#L1-L127"
		license_url = "N/A"
		logic_hash = "7d120f5afb63f7698268a0354a322f37741894c61b36200183a8b19c0ac00e7b"
		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 = { 395df8 741d 3bfb 7419 }
		$sequence_1 = { 8b45f8 394508 7504 c645ff01 8a45ff 5f 5b }
		$sequence_2 = { 6a64 5b ff742414 8d44241c 50 56 57 }
		$sequence_3 = { 8b7f1c 85ff 75cf ff7508 ff15???????? }
		$sequence_4 = { c21000 55 8bec 83ec1c 53 56 0fb6c9 }
		$sequence_5 = { 0f8452010000 0fb6c0 0fb6cb 6603c1 0fb6ca 6603c1 8b4d08 }
		$sequence_6 = { 3b442410 0f8391000000 8b44842c 3b442424 7506 8b442420 eb0a }
		$sequence_7 = { eb0b 57 ff15???????? c645ff01 8b75f0 }
		$sequence_8 = { 8b4dfc 8d75f0 e8???????? 8b75fc 8ad8 e8???????? 84db }
		$sequence_9 = { 56 8bf0 6807b20100 b83f420f00 e8???????? 8b4d08 03ce }

	condition:
		7 of them and filesize < 286720
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 395df8 741d 3bfb 7419 }
$sequence_1hex{ 8b45f8 394508 7504 c645ff01 8a45ff 5f 5b }
$sequence_2hex{ 6a64 5b ff742414 8d44241c 50 56 57 }
$sequence_3hex{ 8b7f1c 85ff 75cf ff7508 ff15???????? }
$sequence_4hex{ c21000 55 8bec 83ec1c 53 56 0fb6c9 }
$sequence_5hex{ 0f8452010000 0fb6c0 0fb6cb 6603c1 0fb6ca 6603c1 8b4d08 }
$sequence_6hex{ 3b442410 0f8391000000 8b44842c 3b442424 7506 8b442420 eb0a }
$sequence_7hex{ eb0b 57 ff15???????? c645ff01 8b75f0 }
$sequence_8hex{ 8b4dfc 8d75f0 e8???????? 8b75fc 8ad8 e8???????? 84db }
$sequence_9hex{ 56 8bf0 6807b20100 b83f420f00 e8???????? 8b4d08 03ce }

Condition

7 of them and filesize < 286720

In plain words (Heuristic)

  • The file must be smaller than 286720 (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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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

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: c572f0c5-c659-5641-95f6-92d41599c8c4

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