YARA · Malpedia signator rules
MALPEDIA_Win_Jelus_Rat_Auto
autogenerated rule brought to you by yara-signator
MalwareJelus 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: Jelus Rat.
It defines 8 patterns (0 text, 8 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-jelus-rat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Jelus_Rat_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "33681d05-24ad-57d3-8610-52ac37c38536"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.jelus_rat"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.jelus_rat_auto.yar#L1-L91"
= "N/A"
= "1f5b36790a1a98c8f318088448ee6df7d5fba3603773a6e0cc9156690aec9ff0"
= 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 = { e8???????? 4c8d4d98 4c8d45a8 488d542460 }
$sequence_1 = { e8???????? 4c8d4d38 4c8d4540 8bd3 }
$sequence_2 = { e8???????? 4c8d4818 4c894d30 8b93f4000000 85d2 }
$sequence_3 = { e8???????? 4c8d4c2440 488bcb 4c8d442448 }
$sequence_4 = { e8???????? 4c8d4c2478 4c8bc0 488bd6 }
$sequence_5 = { e8???????? 4c8d4c2460 4c8d442468 488d542438 }
$sequence_6 = { e8???????? 4c8d4c2440 4c8d05e3261800 488d542450 }
$sequence_7 = { e8???????? 4c8d4c2420 48895c2428 4533c0 }
condition:
7 of them and filesize < 6474752
}
Strings (8 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { e8???????? 4c8d4d98 4c8d45a8 488d542460 } | |
| $sequence_1 | hex | { e8???????? 4c8d4d38 4c8d4540 8bd3 } | |
| $sequence_2 | hex | { e8???????? 4c8d4818 4c894d30 8b93f4000000 85d2 } | |
| $sequence_3 | hex | { e8???????? 4c8d4c2440 488bcb 4c8d442448 } | |
| $sequence_4 | hex | { e8???????? 4c8d4c2478 4c8bc0 488bd6 } | |
| $sequence_5 | hex | { e8???????? 4c8d4c2460 4c8d442468 488d542438 } | |
| $sequence_6 | hex | { e8???????? 4c8d4c2440 4c8d05e3261800 488d542450 } | |
| $sequence_7 | hex | { e8???????? 4c8d4c2420 48895c2428 4533c0 } |
Condition
7 of them and filesize < 6474752In plain words (Heuristic)
- The file must be smaller than 6474752 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: 33681d05-24ad-57d3-8610-52ac37c38536
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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