YARA · Malpedia signator rules
MALPEDIA_Win_Whiteblackcrypt_Auto
autogenerated rule brought to you by yara-signator
MalwareWhiteblackcryptMalpedia 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: Whiteblackcrypt.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-whiteblackcrypt-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Whiteblackcrypt_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "fc05c9b5-93d3-547a-b483-4cf070671b07"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.whiteblackcrypt"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.whiteblackcrypt_auto.yar#L1-L119"
= "N/A"
= "553d6e8fdc611531b3afb86539039720ae5eaac9626613ba9a8069195b84c748"
= 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 = { 0f1086b0000000 4889f2 4889e9 0f29442420 e8???????? }
$sequence_1 = { 8a4301 0fb64c243a 8844243b 8a4302 8844243c }
$sequence_2 = { 83f8ff 89c5 749a 8b442420 488d7324 41b804010000 }
$sequence_3 = { e8???????? 99 f7fd 88141e 48ffc3 ebec 4889f0 }
$sequence_4 = { 4889c7 4989d9 41b800000002 ba01000000 4889f9 }
$sequence_5 = { e8???????? 31c0 8a9407b0000000 301406 48ffc0 }
$sequence_6 = { 0f8498000000 80fa2f 75e3 4883c001 }
$sequence_7 = { 458a4803 458a7801 4489f7 4489d1 4431cf }
$sequence_8 = { 0f94c2 89d0 4883c458 c3 53 4883ec20 ba2e000000 }
$sequence_9 = { 0f29442420 e8???????? b80f000000 8a9406b0000000 80faff 7513 }
condition:
7 of them and filesize < 99328
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 0f1086b0000000 4889f2 4889e9 0f29442420 e8???????? } | |
| $sequence_1 | hex | { 8a4301 0fb64c243a 8844243b 8a4302 8844243c } | |
| $sequence_2 | hex | { 83f8ff 89c5 749a 8b442420 488d7324 41b804010000 } | |
| $sequence_3 | hex | { e8???????? 99 f7fd 88141e 48ffc3 ebec 4889f0 } | |
| $sequence_4 | hex | { 4889c7 4989d9 41b800000002 ba01000000 4889f9 } | |
| $sequence_5 | hex | { e8???????? 31c0 8a9407b0000000 301406 48ffc0 } | |
| $sequence_6 | hex | { 0f8498000000 80fa2f 75e3 4883c001 } | |
| $sequence_7 | hex | { 458a4803 458a7801 4489f7 4489d1 4431cf } | |
| $sequence_8 | hex | { 0f94c2 89d0 4883c458 c3 53 4883ec20 ba2e000000 } | |
| $sequence_9 | hex | { 0f29442420 e8???????? b80f000000 8a9406b0000000 80faff 7513 } |
Condition
7 of them and filesize < 99328In plain words (Heuristic)
- The file must be smaller than 99328 (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: fc05c9b5-93d3-547a-b483-4cf070671b07
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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