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MALPEDIA_Win_Hi_Zor_Rat_Auto

autogenerated rule brought to you by yara-signator

MalwareHi Zor RatMalpedia 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: Hi Zor Rat.

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

Summary generated from the rule's metadata and condition.

Rule source

win-hi-zor-rat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Hi_Zor_Rat_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "9b055cf4-4394-57ba-ba24-aea58c056a5f"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.hi_zor_rat"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.hi_zor_rat_auto.yar#L1-L121"
		license_url = "N/A"
		logic_hash = "a2c1787ff03f77785f6ae2f12c5efdf5e6e326205f05a629cef8eff95a6daaf5"
		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 = { 7cf1 33c0 66837445e402 40 83f80b 7cf4 33c0 }
		$sequence_1 = { f7d3 23581c 0bde 03df 8b7010 8db433af0f7cff }
		$sequence_2 = { 6804010000 8d8de4fdffff 56 51 }
		$sequence_3 = { 85c0 0f8574ffffff 47 85ff }
		$sequence_4 = { 898572ffffff 898576ffffff 89857affffff 6689857effffff c7458c10000000 ff15???????? e8???????? }
		$sequence_5 = { 51 56 50 894510 e8???????? 8b5510 }
		$sequence_6 = { 6a40 6a00 57 e8???????? 83c40c 6a00 8d4dfc }
		$sequence_7 = { 6a00 6a05 51 ff15???????? 56 ff15???????? }
		$sequence_8 = { 884612 33c0 8be5 5d }
		$sequence_9 = { 83ec24 85c0 742d 68???????? 68???????? ff15???????? }

	condition:
		7 of them and filesize < 73728
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 7cf1 33c0 66837445e402 40 83f80b 7cf4 33c0 }
$sequence_1hex{ f7d3 23581c 0bde 03df 8b7010 8db433af0f7cff }
$sequence_2hex{ 6804010000 8d8de4fdffff 56 51 }
$sequence_3hex{ 85c0 0f8574ffffff 47 85ff }
$sequence_4hex{ 898572ffffff 898576ffffff 89857affffff 6689857effffff c7458c10000000 ff15???????? e8???????? }
$sequence_5hex{ 51 56 50 894510 e8???????? 8b5510 }
$sequence_6hex{ 6a40 6a00 57 e8???????? 83c40c 6a00 8d4dfc }
$sequence_7hex{ 6a00 6a05 51 ff15???????? 56 ff15???????? }
$sequence_8hex{ 884612 33c0 8be5 5d }
$sequence_9hex{ 83ec24 85c0 742d 68???????? 68???????? ff15???????? }

Condition

7 of them and filesize < 73728

In plain words (Heuristic)

  • The file must be smaller than 73728 (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: 9b055cf4-4394-57ba-ba24-aea58c056a5f

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