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MALPEDIA_Elf_Bashlite_Auto

autogenerated rule brought to you by yara-signator

MalwareBashliteMalpedia 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: Bashlite.

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

Summary generated from the rule's metadata and condition.

Rule source

elf-bashlite-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Elf_Bashlite_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "c9940f00-6c43-5002-9447-8efca13b4de7"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/elf.bashlite"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/elf.bashlite_auto.yar#L1-L110"
		license_url = "N/A"
		logic_hash = "26dcb3c65c33de0c43264568648256276d33d93e2ed88faf5f7b3de2e4e9c903"
		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 = { 8b85ecefffff c9 c3 55 }
		$sequence_1 = { 83f8ff 750c e8???????? 8b00 83f873 }
		$sequence_2 = { e8???????? c70016000000 e8???????? c70016000000 }
		$sequence_3 = { e8???????? 8945ec 837dec00 750b 8b45ec }
		$sequence_4 = { 31c0 eb19 e8???????? c70016000000 }
		$sequence_5 = { 31c0 eb19 e8???????? c70016000000 e8???????? c70016000000 83c8ff }
		$sequence_6 = { 8945ec 837dec00 750b 8b45ec }
		$sequence_7 = { 21d0 3345fc c9 c3 55 }
		$sequence_8 = { 89c2 89d0 c1e81f 01d0 }
		$sequence_9 = { 750c c785ecefffff01000000 eb0a c785ecefffff00000000 }

	condition:
		7 of them and filesize < 2310144
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8b85ecefffff c9 c3 55 }
$sequence_1hex{ 83f8ff 750c e8???????? 8b00 83f873 }
$sequence_2hex{ e8???????? c70016000000 e8???????? c70016000000 }
$sequence_3hex{ e8???????? 8945ec 837dec00 750b 8b45ec }
$sequence_4hex{ 31c0 eb19 e8???????? c70016000000 }
$sequence_5hex{ 31c0 eb19 e8???????? c70016000000 e8???????? c70016000000 83c8ff }
$sequence_6hex{ 8945ec 837dec00 750b 8b45ec }
$sequence_7hex{ 21d0 3345fc c9 c3 55 }
$sequence_8hex{ 89c2 89d0 c1e81f 01d0 }
$sequence_9hex{ 750c c785ecefffff01000000 eb0a c785ecefffff00000000 }

Condition

7 of them and filesize < 2310144

In plain words (Heuristic)

  • The file must be smaller than 2310144 (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: c9940f00-6c43-5002-9447-8efca13b4de7

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