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MALPEDIA_Win_Kelihos_Auto

autogenerated rule brought to you by yara-signator

MalwareKelihosMalpedia 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: Kelihos.

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

Summary generated from the rule's metadata and condition.

Rule source

win-kelihos-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Kelihos_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "9f37a975-1de8-509e-9e94-af5d7088fe63"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.kelihos"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.kelihos_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "6ad522b1069e95a2743782babae88b692ba7271a95223f2203556d0dea66c488"
		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 = { e8???????? 8bf1 8b4508 8945f0 c745fc01000000 8975ec 8d5c3602 }
		$sequence_1 = { c645fc08 e8???????? 68???????? 8d8dd0feffff e8???????? 8d85d0feffff 50 }
		$sequence_2 = { e9???????? 68cc000000 b8???????? e8???????? 8d8540ffffff 50 8bf9 }
		$sequence_3 = { ff7310 33c0 8d7d08 aa 8bfb 8d75e8 e8???????? }
		$sequence_4 = { e8???????? 8db5b8fdffff e8???????? 53 6a01 8d4dbc e8???????? }
		$sequence_5 = { ff36 ff7004 ff30 8d45c0 50 e8???????? 8b7508 }
		$sequence_6 = { c7400c00f0ffff 833f00 8bce 740d 8bd7 8b0a 83791000 }
		$sequence_7 = { c6430801 8d4538 50 b9???????? 8bfb e8???????? 8bd8 }
		$sequence_8 = { ffd5 0fb7f0 b803000000 8d4805 8d50ff e8???????? 83ffff }
		$sequence_9 = { eb89 5f 5e 5b c9 c20400 55 }

	condition:
		7 of them and filesize < 4702208
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ e8???????? 8bf1 8b4508 8945f0 c745fc01000000 8975ec 8d5c3602 }
$sequence_1hex{ c645fc08 e8???????? 68???????? 8d8dd0feffff e8???????? 8d85d0feffff 50 }
$sequence_2hex{ e9???????? 68cc000000 b8???????? e8???????? 8d8540ffffff 50 8bf9 }
$sequence_3hex{ ff7310 33c0 8d7d08 aa 8bfb 8d75e8 e8???????? }
$sequence_4hex{ e8???????? 8db5b8fdffff e8???????? 53 6a01 8d4dbc e8???????? }
$sequence_5hex{ ff36 ff7004 ff30 8d45c0 50 e8???????? 8b7508 }
$sequence_6hex{ c7400c00f0ffff 833f00 8bce 740d 8bd7 8b0a 83791000 }
$sequence_7hex{ c6430801 8d4538 50 b9???????? 8bfb e8???????? 8bd8 }
$sequence_8hex{ ffd5 0fb7f0 b803000000 8d4805 8d50ff e8???????? 83ffff }
$sequence_9hex{ eb89 5f 5e 5b c9 c20400 55 }

Condition

7 of them and filesize < 4702208

In plain words (Heuristic)

  • The file must be smaller than 4702208 (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: 9f37a975-1de8-509e-9e94-af5d7088fe63

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