YARA · Malpedia signator rules
MALPEDIA_Win_Btcware_Auto
autogenerated rule brought to you by yara-signator
MalwareBtcwareMalpedia 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: Btcware.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-btcware-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Btcware_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "7a18e982-28a7-5c4e-872b-3a019af14d0b"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.btcware"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.btcware_auto.yar#L1-L121"
= "N/A"
= "8f989732d800f4741fbd2ada95ec42c48b7a7fedb058bc69a54423d7ddcacff7"
= 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 = { 16 97 88bd24f1ed24 ae }
$sequence_1 = { 6bf830 8955f4 8b149540d04100 897df0 8a5c1729 80fb02 7405 }
$sequence_2 = { ffd6 6a00 8d45d8 50 6a03 ff75ec }
$sequence_3 = { 0f84b7010000 68???????? 8d85d0d7ffff 50 ffd6 85c0 0f84a1010000 }
$sequence_4 = { 0f82206fffff 83f923 0f87176fffff 8bc8 51 e8???????? }
$sequence_5 = { 83f81d 7cf1 eb07 8b0cc5ec494100 894de4 }
$sequence_6 = { 660f282d???????? 660f59f5 660f28aae03f4100 660f54e5 660f58fe 660f58fc }
$sequence_7 = { c78530ffffff00000000 c78534ffffff0f000000 c68520ffffff00 83f810 7245 }
$sequence_8 = { 8b45e0 8d4e0c 6a06 8d904cc54100 5f 668b02 8d5202 }
$sequence_9 = { e8???????? 8bf8 bad4fc8101 c645fc04 }
condition:
7 of them and filesize < 458752
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 16 97 88bd24f1ed24 ae } | |
| $sequence_1 | hex | { 6bf830 8955f4 8b149540d04100 897df0 8a5c1729 80fb02 7405 } | |
| $sequence_2 | hex | { ffd6 6a00 8d45d8 50 6a03 ff75ec } | |
| $sequence_3 | hex | { 0f84b7010000 68???????? 8d85d0d7ffff 50 ffd6 85c0 0f84a1010000 } | |
| $sequence_4 | hex | { 0f82206fffff 83f923 0f87176fffff 8bc8 51 e8???????? } | |
| $sequence_5 | hex | { 83f81d 7cf1 eb07 8b0cc5ec494100 894de4 } | |
| $sequence_6 | hex | { 660f282d???????? 660f59f5 660f28aae03f4100 660f54e5 660f58fe 660f58fc } | |
| $sequence_7 | hex | { c78530ffffff00000000 c78534ffffff0f000000 c68520ffffff00 83f810 7245 } | |
| $sequence_8 | hex | { 8b45e0 8d4e0c 6a06 8d904cc54100 5f 668b02 8d5202 } | |
| $sequence_9 | hex | { e8???????? 8bf8 bad4fc8101 c645fc04 } |
Condition
7 of them and filesize < 458752In plain words (Heuristic)
- The file must be smaller than 458752 (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: 7a18e982-28a7-5c4e-872b-3a019af14d0b
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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