YARA · Malpedia signator rules
MALPEDIA_Win_Stowaway_Auto
autogenerated rule brought to you by yara-signator
MalwareStowawayMalpedia 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: Stowaway.
It defines 19 patterns (0 text, 19 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-stowaway-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Stowaway_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "8d802ea2-325f-542a-981f-8c2375a02e81"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.stowaway"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.stowaway_auto.yar#L1-L193"
= "N/A"
= "719a82249e2c6544bd756b12bedc1fae86c5b47e6e2fdd1af6a4e45f9d15ac20"
= 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 = { 8a7cbe46 a3???????? 4e fb b501 }
$sequence_1 = { f67be8 7ce8 7de8 7ee8 }
$sequence_2 = { 78e8 79e8 7ae8 ce }
$sequence_3 = { 76e8 77e8 78e8 79e8 }
$sequence_4 = { 7ae8 ce f67be8 7ce8 }
$sequence_5 = { e2d9 8dbe00903a00 8b07 09c0 743c 8b5f04 8d843000a03b00 }
$sequence_6 = { 8bae34a03b00 8dbe00f0ffff bb00100000 50 }
$sequence_7 = { 0e d8f4 ef 28f8 386849 }
$sequence_8 = { 5c 72e4 633e 6c e4e4 }
$sequence_9 = { 3e8059805b 805c805d80 5e 8083c65df85f80 60 8061fc63 8064ffdff1 }
$sequence_10 = { b567 8110932238ba 81f82f2437b0 645b f257 326640 b117 }
$sequence_11 = { 68b890e66c 195039 d0f1 1e }
$sequence_12 = { 9c 5c 4d 79c7 4d e081 025c51c9 }
$sequence_13 = { 01a334a1f20b 19e4 1108 4e 10827e53f706 f9 850c2c }
$sequence_14 = { f60904 9c 26b696 7a19 }
$sequence_15 = { 0f11c1 7875 52 43 6b8ad456ed7902 a2???????? 6b89130a83d644 }
$sequence_16 = { 30c2 01420f 9f d8682a 1f d204c6 06 }
$sequence_17 = { 8e4ec2 0c79 72c9 85cd 4f }
$sequence_18 = { 080a 0c11 1214151617181a 1b1c1f 2126 }
condition:
7 of them and filesize < 8003584
}
Strings (19 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8a7cbe46 a3???????? 4e fb b501 } | |
| $sequence_1 | hex | { f67be8 7ce8 7de8 7ee8 } | |
| $sequence_2 | hex | { 78e8 79e8 7ae8 ce } | |
| $sequence_3 | hex | { 76e8 77e8 78e8 79e8 } | |
| $sequence_4 | hex | { 7ae8 ce f67be8 7ce8 } | |
| $sequence_5 | hex | { e2d9 8dbe00903a00 8b07 09c0 743c 8b5f04 8d843000a03b00 } | |
| $sequence_6 | hex | { 8bae34a03b00 8dbe00f0ffff bb00100000 50 } | |
| $sequence_7 | hex | { 0e d8f4 ef 28f8 386849 } | |
| $sequence_8 | hex | { 5c 72e4 633e 6c e4e4 } | |
| $sequence_9 | hex | { 3e8059805b 805c805d80 5e 8083c65df85f80 60 8061fc63 8064ffdff1 } | |
| $sequence_10 | hex | { b567 8110932238ba 81f82f2437b0 645b f257 326640 b117 } | |
| $sequence_11 | hex | { 68b890e66c 195039 d0f1 1e } | |
| $sequence_12 | hex | { 9c 5c 4d 79c7 4d e081 025c51c9 } | |
| $sequence_13 | hex | { 01a334a1f20b 19e4 1108 4e 10827e53f706 f9 850c2c } | |
| $sequence_14 | hex | { f60904 9c 26b696 7a19 } | |
| $sequence_15 | hex | { 0f11c1 7875 52 43 6b8ad456ed7902 a2???????? 6b89130a83d644 } | |
| $sequence_16 | hex | { 30c2 01420f 9f d8682a 1f d204c6 06 } | |
| $sequence_17 | hex | { 8e4ec2 0c79 72c9 85cd 4f } | |
| $sequence_18 | hex | { 080a 0c11 1214151617181a 1b1c1f 2126 } |
Condition
7 of them and filesize < 8003584In plain words (Heuristic)
- The file must be smaller than 8003584 (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: 8d802ea2-325f-542a-981f-8c2375a02e81
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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