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MALPEDIA_Win_Htprat_Auto

autogenerated rule brought to you by yara-signator

MalwareHtpratMalpedia 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: Htprat.

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

Summary generated from the rule's metadata and condition.

Rule source

win-htprat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Htprat_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "2a40ad4e-1514-53dd-8180-69420f7bc60e"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.htprat"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.htprat_auto.yar#L1-L126"
		license_url = "N/A"
		logic_hash = "9b31ea685effc72070edec20cdbb0f150b670c182033265ef40f9b7f10fd4d1d"
		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 = { 50 e8???????? ffb568efffff e8???????? 59 }
		$sequence_1 = { a3???????? 53 8d854cdcffff 50 8bce e8???????? c78540dcffff01000000 }
		$sequence_2 = { 8b4d08 83c10c 8bc3 e8???????? 84c0 7445 }
		$sequence_3 = { c745cc73747576 c745d07778797a c745d441424344 c745d845464748 c745dc494a4b4c c745e04d4e4f50 c745e451525354 }
		$sequence_4 = { c6400401 eb3c 8d45f8 e8???????? 8b4df8 83c10c 8bc3 }
		$sequence_5 = { 7705 83c2d0 eb1c 83fa41 720a 83fa46 7705 }
		$sequence_6 = { 8b01 8945d0 3bc1 744e }
		$sequence_7 = { a1???????? 33c4 50 8d8424e0000000 64a300000000 33db c744245c0f000000 }
		$sequence_8 = { 6a16 ffb574efffff 89bd6cefffff ffd6 3bc7 750b }
		$sequence_9 = { 50 e8???????? 83c40c 8d85e8fdffff 6a0c 898524efffff }

	condition:
		7 of them and filesize < 278528
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 50 e8???????? ffb568efffff e8???????? 59 }
$sequence_1hex{ a3???????? 53 8d854cdcffff 50 8bce e8???????? c78540dcffff01000000 }
$sequence_2hex{ 8b4d08 83c10c 8bc3 e8???????? 84c0 7445 }
$sequence_3hex{ c745cc73747576 c745d07778797a c745d441424344 c745d845464748 c745dc494a4b4c c745e04d4e4f50 c745e451525354 }
$sequence_4hex{ c6400401 eb3c 8d45f8 e8???????? 8b4df8 83c10c 8bc3 }
$sequence_5hex{ 7705 83c2d0 eb1c 83fa41 720a 83fa46 7705 }
$sequence_6hex{ 8b01 8945d0 3bc1 744e }
$sequence_7hex{ a1???????? 33c4 50 8d8424e0000000 64a300000000 33db c744245c0f000000 }
$sequence_8hex{ 6a16 ffb574efffff 89bd6cefffff ffd6 3bc7 750b }
$sequence_9hex{ 50 e8???????? 83c40c 8d85e8fdffff 6a0c 898524efffff }

Condition

7 of them and filesize < 278528

In plain words (Heuristic)

  • The file must be smaller than 278528 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

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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: 2a40ad4e-1514-53dd-8180-69420f7bc60e

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