YARA · Malpedia signator rules
MALPEDIA_Win_Snatchcrypto_Auto
autogenerated rule brought to you by yara-signator
MalwareSnatchcryptoMalpedia 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: Snatchcrypto.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-snatchcrypto-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Snatchcrypto_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "ad55c4a9-4803-51eb-ad9f-ea987e6ced5b"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.snatchcrypto"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.snatchcrypto_auto.yar#L1-L134"
= "N/A"
= "992c06b0380aa6e1f6295a696221d2907200369a9f414a719b52f5b1e236fce7"
= 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 = { 0f842e010000 488b542460 448d4301 488d4c2470 ff15???????? b920040000 41b806020000 }
$sequence_1 = { 4c8b8fb0000000 488bcf 448bc0 4883feff 741b 488d155a570100 4889742420 }
$sequence_2 = { 4885d2 750f 488d0d98ff0200 ff15???????? eb18 803a3c 488d0d2a5f0300 }
$sequence_3 = { 4053 4883ec20 488bd9 4881c128050000 488d15b1000300 4c8b4170 c7818c00000000000000 }
$sequence_4 = { 488d159afe0200 e8???????? eb38 488d1574fe0200 4d8bcc e8???????? eb27 }
$sequence_5 = { 33db 4585e4 7467 0f1f4000 488b0d???????? 488bd6 e8???????? }
$sequence_6 = { 4883ec10 8bb1f0000000 4d8bf0 488bf9 d1ee 83fe07 0f87a6050000 }
$sequence_7 = { 4885c0 0f8411ffffff 488b5348 488bc8 c743680a000000 e8???????? 8bf8 }
$sequence_8 = { 0f86d9000000 418bad90000000 418d5613 4803e8 488bcd ff5640 85c0 }
$sequence_9 = { 4889542420 488d15eaef0100 488bcf e8???????? 8bc3 488b5c2450 488b742460 }
condition:
7 of them and filesize < 1400832
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 0f842e010000 488b542460 448d4301 488d4c2470 ff15???????? b920040000 41b806020000 } | |
| $sequence_1 | hex | { 4c8b8fb0000000 488bcf 448bc0 4883feff 741b 488d155a570100 4889742420 } | |
| $sequence_2 | hex | { 4885d2 750f 488d0d98ff0200 ff15???????? eb18 803a3c 488d0d2a5f0300 } | |
| $sequence_3 | hex | { 4053 4883ec20 488bd9 4881c128050000 488d15b1000300 4c8b4170 c7818c00000000000000 } | |
| $sequence_4 | hex | { 488d159afe0200 e8???????? eb38 488d1574fe0200 4d8bcc e8???????? eb27 } | |
| $sequence_5 | hex | { 33db 4585e4 7467 0f1f4000 488b0d???????? 488bd6 e8???????? } | |
| $sequence_6 | hex | { 4883ec10 8bb1f0000000 4d8bf0 488bf9 d1ee 83fe07 0f87a6050000 } | |
| $sequence_7 | hex | { 4885c0 0f8411ffffff 488b5348 488bc8 c743680a000000 e8???????? 8bf8 } | |
| $sequence_8 | hex | { 0f86d9000000 418bad90000000 418d5613 4803e8 488bcd ff5640 85c0 } | |
| $sequence_9 | hex | { 4889542420 488d15eaef0100 488bcf e8???????? 8bc3 488b5c2450 488b742460 } |
Condition
7 of them and filesize < 1400832In plain words (Heuristic)
- The file must be smaller than 1400832 (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: ad55c4a9-4803-51eb-ad9f-ea987e6ced5b
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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