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MALPEDIA_Win_Karma_Auto

autogenerated rule brought to you by yara-signator

MalwareKarmaMalpedia 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: Karma.

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

Summary generated from the rule's metadata and condition.

Rule source

win-karma-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Karma_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "09949eae-9164-5d33-929a-4f9c0429a9c8"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.karma"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.karma_auto.yar#L1-L124"
		license_url = "N/A"
		logic_hash = "561763d00262287b440f7b14f63b126e00552944213d05edf97643d72840507e"
		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 = { 83c010 83f820 7ce5 33c0 }
		$sequence_1 = { 0f8570ffffff 8b45f8 8b4df4 33d2 5f 66891471 8b4df0 }
		$sequence_2 = { d1f8 40 8d1400 660f1f440000 0fb70411 8d4902 668901 }
		$sequence_3 = { e8???????? 8b4e04 e8???????? eb16 e8???????? 33d2 b9???????? }
		$sequence_4 = { 0f1f4000 8b51fc 8d49fc 85d2 }
		$sequence_5 = { 83c102 8bf0 6685c0 75e3 85d2 }
		$sequence_6 = { 668908 83c002 8a4dfd c645fe00 c645ff01 eb1f 807dff00 }
		$sequence_7 = { 0f1f00 0f104405dc 0f1088b8404000 660fefc8 0f114c05dc }
		$sequence_8 = { 0fb702 8d4902 668901 8d5202 6685c0 75ef 33c9 }
		$sequence_9 = { 7469 8b01 8b4904 56 33f6 8945ec 894df0 }

	condition:
		7 of them and filesize < 49208
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 83c010 83f820 7ce5 33c0 }
$sequence_1hex{ 0f8570ffffff 8b45f8 8b4df4 33d2 5f 66891471 8b4df0 }
$sequence_2hex{ d1f8 40 8d1400 660f1f440000 0fb70411 8d4902 668901 }
$sequence_3hex{ e8???????? 8b4e04 e8???????? eb16 e8???????? 33d2 b9???????? }
$sequence_4hex{ 0f1f4000 8b51fc 8d49fc 85d2 }
$sequence_5hex{ 83c102 8bf0 6685c0 75e3 85d2 }
$sequence_6hex{ 668908 83c002 8a4dfd c645fe00 c645ff01 eb1f 807dff00 }
$sequence_7hex{ 0f1f00 0f104405dc 0f1088b8404000 660fefc8 0f114c05dc }
$sequence_8hex{ 0fb702 8d4902 668901 8d5202 6685c0 75ef 33c9 }
$sequence_9hex{ 7469 8b01 8b4904 56 33f6 8945ec 894df0 }

Condition

7 of them and filesize < 49208

In plain words (Heuristic)

  • The file must be smaller than 49208 (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: 09949eae-9164-5d33-929a-4f9c0429a9c8

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