YARA · Malpedia signator rules
MALPEDIA_Win_Snatch_Loader_Auto
autogenerated rule brought to you by yara-signator
MalwareSnatch LoaderMalpedia 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: Snatch Loader.
It defines 16 patterns (0 text, 16 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-snatch-loader-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Snatch_Loader_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "e9ca2700-27c0-5d6b-98c9-5a2ddbfa9eb8"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.snatch_loader"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.snatch_loader_auto.yar#L1-L167"
= "N/A"
= "80a133ba734986340b80049c5adabe47993c8143bb78dd7386ee1b2f1e07639d"
= 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 = { c3 56 33f6 49 }
$sequence_1 = { a3???????? 85c0 7505 8b7dfc eb04 ffd0 }
$sequence_2 = { 8bf8 a1???????? 85c0 7522 6a02 59 e8???????? }
$sequence_3 = { 8bc8 e8???????? a3???????? 85c0 7404 }
$sequence_4 = { 57 33db bfe71edec0 895dfc }
$sequence_5 = { 85c0 7406 57 6a00 56 ffd0 }
$sequence_6 = { 85c0 7408 53 6a08 57 ffd0 }
$sequence_7 = { 8bf0 85f6 744b 33c0 66894606 }
$sequence_8 = { 7454 394508 734f ff7510 e8???????? 8945f8 0bc0 }
$sequence_9 = { ff750c ff7508 6a00 6a00 e8???????? 8945fc }
$sequence_10 = { 8b7508 56 e8???????? 0bc0 }
$sequence_11 = { 72ee 8bc2 034508 5a 59 }
$sequence_12 = { 8b5278 035508 8b5a20 035d08 33c9 833f00 }
$sequence_13 = { 33d2 33c9 8a0431 0ac0 741f }
$sequence_14 = { 7440 3b45fc 773b 8b750c 8b7d10 }
$sequence_15 = { e8???????? 8945fc 0bc0 7454 }
condition:
7 of them and filesize < 262144
}
Strings (16 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { c3 56 33f6 49 } | |
| $sequence_1 | hex | { a3???????? 85c0 7505 8b7dfc eb04 ffd0 } | |
| $sequence_2 | hex | { 8bf8 a1???????? 85c0 7522 6a02 59 e8???????? } | |
| $sequence_3 | hex | { 8bc8 e8???????? a3???????? 85c0 7404 } | |
| $sequence_4 | hex | { 57 33db bfe71edec0 895dfc } | |
| $sequence_5 | hex | { 85c0 7406 57 6a00 56 ffd0 } | |
| $sequence_6 | hex | { 85c0 7408 53 6a08 57 ffd0 } | |
| $sequence_7 | hex | { 8bf0 85f6 744b 33c0 66894606 } | |
| $sequence_8 | hex | { 7454 394508 734f ff7510 e8???????? 8945f8 0bc0 } | |
| $sequence_9 | hex | { ff750c ff7508 6a00 6a00 e8???????? 8945fc } | |
| $sequence_10 | hex | { 8b7508 56 e8???????? 0bc0 } | |
| $sequence_11 | hex | { 72ee 8bc2 034508 5a 59 } | |
| $sequence_12 | hex | { 8b5278 035508 8b5a20 035d08 33c9 833f00 } | |
| $sequence_13 | hex | { 33d2 33c9 8a0431 0ac0 741f } | |
| $sequence_14 | hex | { 7440 3b45fc 773b 8b750c 8b7d10 } | |
| $sequence_15 | hex | { e8???????? 8945fc 0bc0 7454 } |
Condition
7 of them and filesize < 262144In plain words (Heuristic)
- The file must be smaller than 262144 (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: e9ca2700-27c0-5d6b-98c9-5a2ddbfa9eb8
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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