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MALPEDIA_Win_Killav_Auto

autogenerated rule brought to you by yara-signator

MalwareKillavMalpedia 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: Killav.

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

Summary generated from the rule's metadata and condition.

Rule source

win-killav-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Killav_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "1408957e-4599-51ba-a09c-95dde355580f"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.killav"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.killav_auto.yar#L1-L125"
		license_url = "N/A"
		logic_hash = "04eb14b50262060a97f19cbe61adb75eaeb660a96a83749938b18d56d4587afc"
		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 = { 8b049d70ba4300 8b4de0 f644082801 7515 e8???????? }
		$sequence_1 = { 8bc2 8bca 83e03f c1f906 6bc038 8b0c8d70ba4300 807c012800 }
		$sequence_2 = { c745ec07000000 668945d8 e8???????? 8d45d8 c645fc11 }
		$sequence_3 = { 6a26 58 0fb60c855ed34200 0fb634855fd34200 8bf9 8985b0f8ffff }
		$sequence_4 = { e8???????? 8d45d8 c645fc1b 50 8d4dd0 e8???????? c645fc00 }
		$sequence_5 = { c1f806 6bc938 8b048570ba4300 0fb6440828 83e040 5d c3 }
		$sequence_6 = { 807dfc01 8b4df4 8b55f0 7522 8b048d70ba4300 f644022d02 }
		$sequence_7 = { c7869800000050c74200 c7460401000000 8b4dfc 5f 5e 33cd 5b }
		$sequence_8 = { eb56 8b048580bb4200 6800080000 6a00 50 8945fc ff15???????? }
		$sequence_9 = { 85c0 0f8561ffffff ff742410 ff15???????? }

	condition:
		7 of them and filesize < 517120
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8b049d70ba4300 8b4de0 f644082801 7515 e8???????? }
$sequence_1hex{ 8bc2 8bca 83e03f c1f906 6bc038 8b0c8d70ba4300 807c012800 }
$sequence_2hex{ c745ec07000000 668945d8 e8???????? 8d45d8 c645fc11 }
$sequence_3hex{ 6a26 58 0fb60c855ed34200 0fb634855fd34200 8bf9 8985b0f8ffff }
$sequence_4hex{ e8???????? 8d45d8 c645fc1b 50 8d4dd0 e8???????? c645fc00 }
$sequence_5hex{ c1f806 6bc938 8b048570ba4300 0fb6440828 83e040 5d c3 }
$sequence_6hex{ 807dfc01 8b4df4 8b55f0 7522 8b048d70ba4300 f644022d02 }
$sequence_7hex{ c7869800000050c74200 c7460401000000 8b4dfc 5f 5e 33cd 5b }
$sequence_8hex{ eb56 8b048580bb4200 6800080000 6a00 50 8945fc ff15???????? }
$sequence_9hex{ 85c0 0f8561ffffff ff742410 ff15???????? }

Condition

7 of them and filesize < 517120

In plain words (Heuristic)

  • The file must be smaller than 517120 (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: 1408957e-4599-51ba-a09c-95dde355580f

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