YARA · Malpedia signator rules
MALPEDIA_Win_Whitebird_Auto
autogenerated rule brought to you by yara-signator
MalwareWhitebirdMalpedia 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: Whitebird.
It defines 15 patterns (0 text, 15 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-whitebird-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Whitebird_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "8d8629e9-04d0-5d1b-a7ec-52f8962a19ca"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.whitebird"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.whitebird_auto.yar#L1-L160"
= "N/A"
= "d87787dcbb00e387c1455bf1cef6c6ed4e84fd4e1eef674ade6ef4ca6e18318e"
= 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 = { eb09 80f92f 0f95c1 80c13f }
$sequence_1 = { 83ff0b 0f8e2d010000 488d842460030000 488d8c2470030000 488b10 }
$sequence_2 = { 51 e8???????? 59 8985a8fdffff }
$sequence_3 = { 418d5003 8d7aff 8bcf ff15???????? 33c9 }
$sequence_4 = { 834dfcff 8bc8 a3???????? e8???????? bf???????? 57 ff15???????? }
$sequence_5 = { a1???????? 83c410 85c0 7405 8b4004 eb02 }
$sequence_6 = { 56 43 53 e8???????? 53 }
$sequence_7 = { 48895c2428 4c895c2420 ff5718 3bc3 0f8c3a010000 }
$sequence_8 = { e9???????? ba20000000 488bcf ff15???????? 4c8be0 4885c0 }
$sequence_9 = { 488bf2 8d6b05 4863cd e8???????? 488bf8 }
$sequence_10 = { be05000000 403833 7551 8a4301 }
$sequence_11 = { 488d05d4bdffff 33ff 4c8be9 488901 4889b910020000 }
$sequence_12 = { 68???????? 57 ff15???????? 8bf0 59 33c0 59 }
$sequence_13 = { 899da0f5ffff c78594f5ffff64000000 e8???????? 53 6a01 8d85d7f5ffff 50 }
$sequence_14 = { eb3f 6a54 ebd2 83e864 742a 48 }
condition:
7 of them and filesize < 139264
}
Strings (15 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { eb09 80f92f 0f95c1 80c13f } | |
| $sequence_1 | hex | { 83ff0b 0f8e2d010000 488d842460030000 488d8c2470030000 488b10 } | |
| $sequence_2 | hex | { 51 e8???????? 59 8985a8fdffff } | |
| $sequence_3 | hex | { 418d5003 8d7aff 8bcf ff15???????? 33c9 } | |
| $sequence_4 | hex | { 834dfcff 8bc8 a3???????? e8???????? bf???????? 57 ff15???????? } | |
| $sequence_5 | hex | { a1???????? 83c410 85c0 7405 8b4004 eb02 } | |
| $sequence_6 | hex | { 56 43 53 e8???????? 53 } | |
| $sequence_7 | hex | { 48895c2428 4c895c2420 ff5718 3bc3 0f8c3a010000 } | |
| $sequence_8 | hex | { e9???????? ba20000000 488bcf ff15???????? 4c8be0 4885c0 } | |
| $sequence_9 | hex | { 488bf2 8d6b05 4863cd e8???????? 488bf8 } | |
| $sequence_10 | hex | { be05000000 403833 7551 8a4301 } | |
| $sequence_11 | hex | { 488d05d4bdffff 33ff 4c8be9 488901 4889b910020000 } | |
| $sequence_12 | hex | { 68???????? 57 ff15???????? 8bf0 59 33c0 59 } | |
| $sequence_13 | hex | { 899da0f5ffff c78594f5ffff64000000 e8???????? 53 6a01 8d85d7f5ffff 50 } | |
| $sequence_14 | hex | { eb3f 6a54 ebd2 83e864 742a 48 } |
Condition
7 of them and filesize < 139264In plain words (Heuristic)
- The file must be smaller than 139264 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
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: 8d8629e9-04d0-5d1b-a7ec-52f8962a19ca
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
Related rules
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04