YARA · Malpedia signator rules
MALPEDIA_Win_Shortleash_Auto
autogenerated rule brought to you by yara-signator
MalwareShortleashMalpedia 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: Shortleash.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-shortleash-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Shortleash_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "2dce8e58-6ca1-5187-ba1f-93da289cd793"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.shortleash"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.shortleash_auto.yar#L1-L134"
= "N/A"
= "71539c4b2430b9e8011503006f9e5cf6c8a2770185be5eff5fd5462a77f2cf20"
= 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???????? 3ac3 7506 4883c420 5b c3 41b848020000 }
$sequence_1 = { e8???????? 48894308 4c8b26 0f57c0 f30f7f45c0 498b5618 4885d2 }
$sequence_2 = { ba18000000 488bcb e8???????? 488b5540 488d4d58 e8???????? 488b5d38 }
$sequence_3 = { 4a8d1c09 eb02 33db 4885db 7410 488d056e070000 488d0d7b210000 }
$sequence_4 = { 488d4c2440 e8???????? 0f1007 f30f7f442420 4c8d442420 488bd0 488bcb }
$sequence_5 = { b880c2ffff e9???????? 4c8d45e0 488bd7 488d4d30 e8???????? 8bd8 }
$sequence_6 = { 418bcb 4433c0 f7d1 4123cc 418bc3 c1c806 4433c0 }
$sequence_7 = { ffd2 498d8da0000000 488d559f e8???????? 90 4c8bc0 498bd5 }
$sequence_8 = { 85ed 74c8 458bf0 ebc6 33c0 85c9 751a }
$sequence_9 = { 7516 488bcf e8???????? 8bd8 498bce e8???????? 3bc3 }
condition:
7 of them and filesize < 2415616
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { e8???????? 3ac3 7506 4883c420 5b c3 41b848020000 } | |
| $sequence_1 | hex | { e8???????? 48894308 4c8b26 0f57c0 f30f7f45c0 498b5618 4885d2 } | |
| $sequence_2 | hex | { ba18000000 488bcb e8???????? 488b5540 488d4d58 e8???????? 488b5d38 } | |
| $sequence_3 | hex | { 4a8d1c09 eb02 33db 4885db 7410 488d056e070000 488d0d7b210000 } | |
| $sequence_4 | hex | { 488d4c2440 e8???????? 0f1007 f30f7f442420 4c8d442420 488bd0 488bcb } | |
| $sequence_5 | hex | { b880c2ffff e9???????? 4c8d45e0 488bd7 488d4d30 e8???????? 8bd8 } | |
| $sequence_6 | hex | { 418bcb 4433c0 f7d1 4123cc 418bc3 c1c806 4433c0 } | |
| $sequence_7 | hex | { ffd2 498d8da0000000 488d559f e8???????? 90 4c8bc0 498bd5 } | |
| $sequence_8 | hex | { 85ed 74c8 458bf0 ebc6 33c0 85c9 751a } | |
| $sequence_9 | hex | { 7516 488bcf e8???????? 8bd8 498bce e8???????? 3bc3 } |
Condition
7 of them and filesize < 2415616In plain words (Heuristic)
- The file must be smaller than 2415616 (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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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: 2dce8e58-6ca1-5187-ba1f-93da289cd793
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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