YARA · Malpedia signator rules
MALPEDIA_Win_Snowflake_Stealer_Auto
autogenerated rule brought to you by yara-signator
MalwareSnowflake StealerMalpedia 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: Snowflake Stealer.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-snowflake-stealer-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Snowflake_Stealer_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "c0b96cf9-e624-56f3-823a-f283f32ffd30"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.snowflake_stealer"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.snowflake_stealer_auto.yar#L1-L134"
= "N/A"
= "eb4c7359191bec957d1c92cb77cda613c742d7f8051b1e8b99c514eca893bd9b"
= 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???????? 83c40c eb14 f30f7e00 f20f104808 f20f114c1008 660fd60410 }
$sequence_1 = { f3a5 66899880000000 66899082000000 8d8c24b0000000 832000 e8???????? e9???????? }
$sequence_2 = { f7472400100000 740c ff36 e8???????? 59 85c0 7504 }
$sequence_3 = { f644242407 5f 5e 5d 5b 740a ff74241c }
$sequence_4 = { f20f108424c0000000 f20f108c24c8000000 8d8c2490000000 8d7c2418 896f08 f20f114908 f20f1101 }
$sequence_5 = { e9???????? 89f9 8d9424a4000000 e8???????? 807c243809 0f844ffdffff 8dbc2400010000 }
$sequence_6 = { ff74241c e8???????? e9???????? f6450408 8b4d1c 745c 8b9c24b4000000 }
$sequence_7 = { ff700c 57 e8???????? 83c40c 8b442450 8b4c2434 49 }
$sequence_8 = { f6c301 750f c6463800 eb09 f6c301 0f84903c0000 b101 }
$sequence_9 = { ff15???????? 688cb50000 ff761c 68???????? 50 680a180000 894614 }
condition:
7 of them and filesize < 6196224
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { e8???????? 83c40c eb14 f30f7e00 f20f104808 f20f114c1008 660fd60410 } | |
| $sequence_1 | hex | { f3a5 66899880000000 66899082000000 8d8c24b0000000 832000 e8???????? e9???????? } | |
| $sequence_2 | hex | { f7472400100000 740c ff36 e8???????? 59 85c0 7504 } | |
| $sequence_3 | hex | { f644242407 5f 5e 5d 5b 740a ff74241c } | |
| $sequence_4 | hex | { f20f108424c0000000 f20f108c24c8000000 8d8c2490000000 8d7c2418 896f08 f20f114908 f20f1101 } | |
| $sequence_5 | hex | { e9???????? 89f9 8d9424a4000000 e8???????? 807c243809 0f844ffdffff 8dbc2400010000 } | |
| $sequence_6 | hex | { ff74241c e8???????? e9???????? f6450408 8b4d1c 745c 8b9c24b4000000 } | |
| $sequence_7 | hex | { ff700c 57 e8???????? 83c40c 8b442450 8b4c2434 49 } | |
| $sequence_8 | hex | { f6c301 750f c6463800 eb09 f6c301 0f84903c0000 b101 } | |
| $sequence_9 | hex | { ff15???????? 688cb50000 ff761c 68???????? 50 680a180000 894614 } |
Condition
7 of them and filesize < 6196224In plain words (Heuristic)
- The file must be smaller than 6196224 (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: c0b96cf9-e624-56f3-823a-f283f32ffd30
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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