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MALPEDIA_Win_Putabmow_Auto

autogenerated rule brought to you by yara-signator

MalwarePutabmowMalpedia 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: Putabmow.

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

Summary generated from the rule's metadata and condition.

Rule source

win-putabmow-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Putabmow_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "a9b616a0-139a-5b4a-93ea-ffaa2b56c68b"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.putabmow"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.putabmow_auto.yar#L1-L133"
		license_url = "N/A"
		logic_hash = "01d30dc643c1d106fb037ce2688ab30e4c0d3fee3187ef5ac4f73c934b8e8d84"
		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 = { 57 e8???????? 837e1800 751c 8bcf e8???????? 8b0f }
		$sequence_1 = { 8d45f4 64a300000000 8b4514 8b7508 8b7d0c 8b5d10 68000000f0 }
		$sequence_2 = { 8bca 81faff070000 771b c1e906 80e23f 80c9c0 80ca80 }
		$sequence_3 = { 6805000080 ff15???????? 85c0 7451 837e1408 7204 8b06 }
		$sequence_4 = { c1e604 8b0b 03f1 ff7508 ff37 8bd6 }
		$sequence_5 = { 8bd6 7502 8b16 c78424ac01000000000000 c78424b001000000000000 c78424b00100000f000000 c78424ac01000000000000 }
		$sequence_6 = { 57 e8???????? 83c404 ff75b4 ff15???????? 6a00 ff75b0 }
		$sequence_7 = { 89442444 3bd1 0f83ab000000 89542420 8b54242c 3b542420 0f879d000000 }
		$sequence_8 = { 8b7e14 83ff08 7204 8b06 eb02 8bc6 8a1c58 }
		$sequence_9 = { e9???????? 83ec0c 8d8c24d0000000 e8???????? c684242802000003 8d442434 837c244810 }

	condition:
		7 of them and filesize < 704512
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 57 e8???????? 837e1800 751c 8bcf e8???????? 8b0f }
$sequence_1hex{ 8d45f4 64a300000000 8b4514 8b7508 8b7d0c 8b5d10 68000000f0 }
$sequence_2hex{ 8bca 81faff070000 771b c1e906 80e23f 80c9c0 80ca80 }
$sequence_3hex{ 6805000080 ff15???????? 85c0 7451 837e1408 7204 8b06 }
$sequence_4hex{ c1e604 8b0b 03f1 ff7508 ff37 8bd6 }
$sequence_5hex{ 8bd6 7502 8b16 c78424ac01000000000000 c78424b001000000000000 c78424b00100000f000000 c78424ac01000000000000 }
$sequence_6hex{ 57 e8???????? 83c404 ff75b4 ff15???????? 6a00 ff75b0 }
$sequence_7hex{ 89442444 3bd1 0f83ab000000 89542420 8b54242c 3b542420 0f879d000000 }
$sequence_8hex{ 8b7e14 83ff08 7204 8b06 eb02 8bc6 8a1c58 }
$sequence_9hex{ e9???????? 83ec0c 8d8c24d0000000 e8???????? c684242802000003 8d442434 837c244810 }

Condition

7 of them and filesize < 704512

In plain words (Heuristic)

  • The file must be smaller than 704512 (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: a9b616a0-139a-5b4a-93ea-ffaa2b56c68b

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