Skip to content

YARA · Malpedia signator rules

MALPEDIA_Win_Cerber_Auto

autogenerated rule brought to you by yara-signator

MalwareCerberMalpedia 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: Cerber.

It defines 8 patterns (0 text, 8 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-cerber-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Cerber_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "54d5986a-5891-50f0-b298-faa9dc92f46a"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.cerber"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.cerber_auto.yar#L1-L106"
		license_url = "N/A"
		logic_hash = "5fcd413923440d43bb304c96f57fe00738e1b31d910a6f707b556f0ccf85e9d5"
		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 = { 33da 8b9034ffffff 235054 89b840010000 8bb8b8000000 23b8a0000000 899844010000 }
		$sequence_1 = { 59 8b45ec ff4de8 836df004 8345e004 836dec04 837de800 }
		$sequence_2 = { 51 33c0 53 3bf0 }
		$sequence_3 = { 0bf2 0fa4ce10 c1e110 99 0bc8 8b4524 }
		$sequence_4 = { 7504 6a05 ebee 394508 }
		$sequence_5 = { 83c704 ff4dfc 75dd 8b4510 5f 5e 5b }
		$sequence_6 = { 33da 8b9044ffffff 235064 894de0 8b88d4000000 894de4 }
		$sequence_7 = { 33da 8b902cffffff 23504c 89b838010000 8b7de8 23fe 8b75ec }

	condition:
		7 of them and filesize < 573440
}

Strings (8 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 33da 8b9034ffffff 235054 89b840010000 8bb8b8000000 23b8a0000000 899844010000 }
$sequence_1hex{ 59 8b45ec ff4de8 836df004 8345e004 836dec04 837de800 }
$sequence_2hex{ 51 33c0 53 3bf0 }
$sequence_3hex{ 0bf2 0fa4ce10 c1e110 99 0bc8 8b4524 }
$sequence_4hex{ 7504 6a05 ebee 394508 }
$sequence_5hex{ 83c704 ff4dfc 75dd 8b4510 5f 5e 5b }
$sequence_6hex{ 33da 8b9044ffffff 235064 894de0 8b88d4000000 894de4 }
$sequence_7hex{ 33da 8b902cffffff 23504c 89b838010000 8b7de8 23fe 8b75ec }

Condition

7 of them and filesize < 573440

In plain words (Heuristic)

  • The file must be smaller than 573440 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.

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: 54d5986a-5891-50f0-b298-faa9dc92f46a

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