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MALPEDIA_Win_Krbanker_Auto

autogenerated rule brought to you by yara-signator

MalwareKrbankerMalpedia 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: Krbanker.

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

Summary generated from the rule's metadata and condition.

Rule source

win-krbanker-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Krbanker_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "3510fffa-0173-5cd5-afc6-be6b1c6982fb"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.krbanker"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.krbanker_auto.yar#L1-L122"
		license_url = "N/A"
		logic_hash = "1a834be2227ecc2b12fc4935d053b1aeae77b26c9f0258726b1be0d0e7462f84"
		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 = { 23d0 8954244c eb08 c744244cffffffff 8d4c2424 }
		$sequence_1 = { 894504 8b5108 895508 8b410c }
		$sequence_2 = { 6874000000 6801000000 bb40010000 e8???????? 83c410 8945d0 6801010080 }
		$sequence_3 = { 53 57 e8???????? 8bf0 83c40c 83feff 0f848f000000 }
		$sequence_4 = { 7412 6802000000 e8???????? 83c404 d945d8 eb06 8955dc }
		$sequence_5 = { c3 8b4c2420 8b542404 8d442408 50 51 }
		$sequence_6 = { 83c410 8945e4 6801010080 6a00 6841000000 6801000000 bb40010000 }
		$sequence_7 = { 894de8 8b4de8 8b55e4 8b45e0 }
		$sequence_8 = { 6803000000 bb9c010000 e8???????? 83c428 8945ec }
		$sequence_9 = { 57 8902 8b4104 894204 8b4108 894208 }

	condition:
		7 of them and filesize < 1826816
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 23d0 8954244c eb08 c744244cffffffff 8d4c2424 }
$sequence_1hex{ 894504 8b5108 895508 8b410c }
$sequence_2hex{ 6874000000 6801000000 bb40010000 e8???????? 83c410 8945d0 6801010080 }
$sequence_3hex{ 53 57 e8???????? 8bf0 83c40c 83feff 0f848f000000 }
$sequence_4hex{ 7412 6802000000 e8???????? 83c404 d945d8 eb06 8955dc }
$sequence_5hex{ c3 8b4c2420 8b542404 8d442408 50 51 }
$sequence_6hex{ 83c410 8945e4 6801010080 6a00 6841000000 6801000000 bb40010000 }
$sequence_7hex{ 894de8 8b4de8 8b55e4 8b45e0 }
$sequence_8hex{ 6803000000 bb9c010000 e8???????? 83c428 8945ec }
$sequence_9hex{ 57 8902 8b4104 894204 8b4108 894208 }

Condition

7 of them and filesize < 1826816

In plain words (Heuristic)

  • The file must be smaller than 1826816 (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: 3510fffa-0173-5cd5-afc6-be6b1c6982fb

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