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MALPEDIA_Win_Jlorat_Auto

autogenerated rule brought to you by yara-signator

MalwareJloratMalpedia 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: Jlorat.

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

Summary generated from the rule's metadata and condition.

Rule source

win-jlorat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Jlorat_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "ba729196-a7d7-59f0-9c40-f4da7d10b781"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.jlorat"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.jlorat_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "89ee6f5af4bbc0ca3930c558eb44fe3b46ffa971fd86650e68795fe094f9760a"
		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 = { f20f1085b0feffff f20f1185c0feffff 89e0 8d8dc0feffff 8908 e8???????? 899598feffff }
		$sequence_1 = { eb00 eb02 ebfc 837dc000 0f94c0 a801 7502 }
		$sequence_2 = { f6464501 7522 eb06 c6463b01 ebf2 8a463b 8b4e58 }
		$sequence_3 = { e8???????? 8b458c 8b4de8 64890d00000000 83c478 5e 5f }
		$sequence_4 = { eb00 c745f000000000 89e0 8d8d1cffffff 8908 e8???????? e9???????? }
		$sequence_5 = { f20f1045d4 c745dc00000000 c745d800000000 66c745e00000 f20f1055d4 f20f104ddc 894808 }
		$sequence_6 = { f7e1 898518ffffff 0f90c0 a801 753d eb20 89e0 }
		$sequence_7 = { f20f1145ac f20f1045bc f20f1055ac f20f104db4 f20f118578ffffff f20f118d70ffffff f20f119568ffffff }
		$sequence_8 = { f20f108620040000 f20f11863c030000 f20f108610040000 f20f108e18040000 f20f118e34030000 f20f11862c030000 88866c030000 }
		$sequence_9 = { f20f10860c020000 f20f118600020000 8b08 83c144 c786680f000008000000 89e0 8908 }

	condition:
		7 of them and filesize < 10952704
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ f20f1085b0feffff f20f1185c0feffff 89e0 8d8dc0feffff 8908 e8???????? 899598feffff }
$sequence_1hex{ eb00 eb02 ebfc 837dc000 0f94c0 a801 7502 }
$sequence_2hex{ f6464501 7522 eb06 c6463b01 ebf2 8a463b 8b4e58 }
$sequence_3hex{ e8???????? 8b458c 8b4de8 64890d00000000 83c478 5e 5f }
$sequence_4hex{ eb00 c745f000000000 89e0 8d8d1cffffff 8908 e8???????? e9???????? }
$sequence_5hex{ f20f1045d4 c745dc00000000 c745d800000000 66c745e00000 f20f1055d4 f20f104ddc 894808 }
$sequence_6hex{ f7e1 898518ffffff 0f90c0 a801 753d eb20 89e0 }
$sequence_7hex{ f20f1145ac f20f1045bc f20f1055ac f20f104db4 f20f118578ffffff f20f118d70ffffff f20f119568ffffff }
$sequence_8hex{ f20f108620040000 f20f11863c030000 f20f108610040000 f20f108e18040000 f20f118e34030000 f20f11862c030000 88866c030000 }
$sequence_9hex{ f20f10860c020000 f20f118600020000 8b08 83c144 c786680f000008000000 89e0 8908 }

Condition

7 of them and filesize < 10952704

In plain words (Heuristic)

  • The file must be smaller than 10952704 (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: ba729196-a7d7-59f0-9c40-f4da7d10b781

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