YARA · Malpedia signator rules
MALPEDIA_Win_Jlorat_Auto
autogenerated rule brought to you by yara-signator
- 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:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "ba729196-a7d7-59f0-9c40-f4da7d10b781"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.jlorat"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.jlorat_auto.yar#L1-L134"
= "N/A"
= "89ee6f5af4bbc0ca3930c558eb44fe3b46ffa971fd86650e68795fe094f9760a"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "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)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { f20f1085b0feffff f20f1185c0feffff 89e0 8d8dc0feffff 8908 e8???????? 899598feffff } | |
| $sequence_1 | hex | { eb00 eb02 ebfc 837dc000 0f94c0 a801 7502 } | |
| $sequence_2 | hex | { f6464501 7522 eb06 c6463b01 ebf2 8a463b 8b4e58 } | |
| $sequence_3 | hex | { e8???????? 8b458c 8b4de8 64890d00000000 83c478 5e 5f } | |
| $sequence_4 | hex | { eb00 c745f000000000 89e0 8d8d1cffffff 8908 e8???????? e9???????? } | |
| $sequence_5 | hex | { f20f1045d4 c745dc00000000 c745d800000000 66c745e00000 f20f1055d4 f20f104ddc 894808 } | |
| $sequence_6 | hex | { f7e1 898518ffffff 0f90c0 a801 753d eb20 89e0 } | |
| $sequence_7 | hex | { f20f1145ac f20f1045bc f20f1055ac f20f104db4 f20f118578ffffff f20f118d70ffffff f20f119568ffffff } | |
| $sequence_8 | hex | { f20f108620040000 f20f11863c030000 f20f108610040000 f20f108e18040000 f20f118e34030000 f20f11862c030000 88866c030000 } | |
| $sequence_9 | hex | { f20f10860c020000 f20f118600020000 8b08 83c144 c786680f000008000000 89e0 8908 } |
Condition
7 of them and filesize < 10952704In 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.
Test this rule in your browser
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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.
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)
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
| 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 |
Tags:FILE
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