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MALPEDIA_Win_Btcware_Auto

autogenerated rule brought to you by yara-signator

MalwareBtcwareMalpedia 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: Btcware.

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

Summary generated from the rule's metadata and condition.

Rule source

win-btcware-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Btcware_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "7a18e982-28a7-5c4e-872b-3a019af14d0b"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.btcware"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.btcware_auto.yar#L1-L121"
		license_url = "N/A"
		logic_hash = "8f989732d800f4741fbd2ada95ec42c48b7a7fedb058bc69a54423d7ddcacff7"
		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 = { 16 97 88bd24f1ed24 ae }
		$sequence_1 = { 6bf830 8955f4 8b149540d04100 897df0 8a5c1729 80fb02 7405 }
		$sequence_2 = { ffd6 6a00 8d45d8 50 6a03 ff75ec }
		$sequence_3 = { 0f84b7010000 68???????? 8d85d0d7ffff 50 ffd6 85c0 0f84a1010000 }
		$sequence_4 = { 0f82206fffff 83f923 0f87176fffff 8bc8 51 e8???????? }
		$sequence_5 = { 83f81d 7cf1 eb07 8b0cc5ec494100 894de4 }
		$sequence_6 = { 660f282d???????? 660f59f5 660f28aae03f4100 660f54e5 660f58fe 660f58fc }
		$sequence_7 = { c78530ffffff00000000 c78534ffffff0f000000 c68520ffffff00 83f810 7245 }
		$sequence_8 = { 8b45e0 8d4e0c 6a06 8d904cc54100 5f 668b02 8d5202 }
		$sequence_9 = { e8???????? 8bf8 bad4fc8101 c645fc04 }

	condition:
		7 of them and filesize < 458752
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 16 97 88bd24f1ed24 ae }
$sequence_1hex{ 6bf830 8955f4 8b149540d04100 897df0 8a5c1729 80fb02 7405 }
$sequence_2hex{ ffd6 6a00 8d45d8 50 6a03 ff75ec }
$sequence_3hex{ 0f84b7010000 68???????? 8d85d0d7ffff 50 ffd6 85c0 0f84a1010000 }
$sequence_4hex{ 0f82206fffff 83f923 0f87176fffff 8bc8 51 e8???????? }
$sequence_5hex{ 83f81d 7cf1 eb07 8b0cc5ec494100 894de4 }
$sequence_6hex{ 660f282d???????? 660f59f5 660f28aae03f4100 660f54e5 660f58fe 660f58fc }
$sequence_7hex{ c78530ffffff00000000 c78534ffffff0f000000 c68520ffffff00 83f810 7245 }
$sequence_8hex{ 8b45e0 8d4e0c 6a06 8d904cc54100 5f 668b02 8d5202 }
$sequence_9hex{ e8???????? 8bf8 bad4fc8101 c645fc04 }

Condition

7 of them and filesize < 458752

In plain words (Heuristic)

  • The file must be smaller than 458752 (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: 7a18e982-28a7-5c4e-872b-3a019af14d0b

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