YARA · Malpedia signator rules
MALPEDIA_Win_Shylock_Auto
autogenerated rule brought to you by yara-signator
MalwareShylockMalpedia 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: Shylock.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-shylock-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Shylock_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "e92404bc-c694-5279-a73e-c19c869c5e1a"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.shylock"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.shylock_auto.yar#L1-L134"
= "N/A"
= "896486f3678c2ac087489c34815b45f5beb56a6e3c464b0c693cf90d8b3e1140"
= 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 = { eb03 d165fc 49 75de 40 3b450c 7cc6 }
$sequence_1 = { e8???????? 85c0 7507 33c0 e9???????? 8b4df0 8365fc00 }
$sequence_2 = { e8???????? 8b3d???????? 59 8bf7 85ff 7412 e8???????? }
$sequence_3 = { 57 ff33 8986b0000000 8d461c 50 c70776696473 c786c00000000c000000 }
$sequence_4 = { ff7508 680a88e5ff e8???????? 8bf0 e8???????? 59 ffd0 }
$sequence_5 = { c9 c20400 55 8bec 6a00 8d450c 50 }
$sequence_6 = { 741a 8d4dec 51 8bde e8???????? 8bd8 e8???????? }
$sequence_7 = { e8???????? 59 59 8d7508 e8???????? 43 3b5df8 }
$sequence_8 = { e8???????? 8d75a4 e8???????? 8d75d4 e8???????? 8d759c e8???????? }
$sequence_9 = { 83f8ff 741a 8d4dec 51 8bde e8???????? 8bd8 }
condition:
7 of them and filesize < 630784
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { eb03 d165fc 49 75de 40 3b450c 7cc6 } | |
| $sequence_1 | hex | { e8???????? 85c0 7507 33c0 e9???????? 8b4df0 8365fc00 } | |
| $sequence_2 | hex | { e8???????? 8b3d???????? 59 8bf7 85ff 7412 e8???????? } | |
| $sequence_3 | hex | { 57 ff33 8986b0000000 8d461c 50 c70776696473 c786c00000000c000000 } | |
| $sequence_4 | hex | { ff7508 680a88e5ff e8???????? 8bf0 e8???????? 59 ffd0 } | |
| $sequence_5 | hex | { c9 c20400 55 8bec 6a00 8d450c 50 } | |
| $sequence_6 | hex | { 741a 8d4dec 51 8bde e8???????? 8bd8 e8???????? } | |
| $sequence_7 | hex | { e8???????? 59 59 8d7508 e8???????? 43 3b5df8 } | |
| $sequence_8 | hex | { e8???????? 8d75a4 e8???????? 8d75d4 e8???????? 8d759c e8???????? } | |
| $sequence_9 | hex | { 83f8ff 741a 8d4dec 51 8bde e8???????? 8bd8 } |
Condition
7 of them and filesize < 630784In plain words (Heuristic)
- The file must be smaller than 630784 (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: e92404bc-c694-5279-a73e-c19c869c5e1a
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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