YARA · Malpedia signator rules
MALPEDIA_Win_Blackcoffee_Auto
autogenerated rule brought to you by yara-signator
MalwareBlackcoffeeMalpedia 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: Blackcoffee.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-blackcoffee-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Blackcoffee_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "24f9c95a-158c-55ab-a4f3-f8cabc725f0c"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.blackcoffee"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.blackcoffee_auto.yar#L1-L122"
= "N/A"
= "2b394e9c3cd7e94e4e6651b202e65799c90db4156d7541937f1cbeb7cbc47c4b"
= 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 = { 89461c 8b45f8 894618 8b461c 83c00c 894610 }
$sequence_1 = { e8???????? 8bf0 8d8500fcffff 83c604 33d2 6a08 8bca }
$sequence_2 = { 59 ff15???????? 0faf4608 ff4508 83c704 837d081e }
$sequence_3 = { ff742414 e8???????? 8bf0 85f6 7411 6888130000 ff15???????? }
$sequence_4 = { 8365fc00 66ab aa 80a508f0ffff00 }
$sequence_5 = { 7620 0fb6543904 8bd8 81e3ff000000 33d3 c1e808 }
$sequence_6 = { 6804010000 50 8d4708 50 ffd3 83c418 }
$sequence_7 = { e8???????? 8806 8d45b0 50 }
$sequence_8 = { 83c00c 0107 8b37 03f3 e8???????? 6854414449 }
$sequence_9 = { 750b ff15???????? 89460c eb28 57 57 }
condition:
7 of them and filesize < 118784
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 89461c 8b45f8 894618 8b461c 83c00c 894610 } | |
| $sequence_1 | hex | { e8???????? 8bf0 8d8500fcffff 83c604 33d2 6a08 8bca } | |
| $sequence_2 | hex | { 59 ff15???????? 0faf4608 ff4508 83c704 837d081e } | |
| $sequence_3 | hex | { ff742414 e8???????? 8bf0 85f6 7411 6888130000 ff15???????? } | |
| $sequence_4 | hex | { 8365fc00 66ab aa 80a508f0ffff00 } | |
| $sequence_5 | hex | { 7620 0fb6543904 8bd8 81e3ff000000 33d3 c1e808 } | |
| $sequence_6 | hex | { 6804010000 50 8d4708 50 ffd3 83c418 } | |
| $sequence_7 | hex | { e8???????? 8806 8d45b0 50 } | |
| $sequence_8 | hex | { 83c00c 0107 8b37 03f3 e8???????? 6854414449 } | |
| $sequence_9 | hex | { 750b ff15???????? 89460c eb28 57 57 } |
Condition
7 of them and filesize < 118784In plain words (Heuristic)
- The file must be smaller than 118784 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: 24f9c95a-158c-55ab-a4f3-f8cabc725f0c
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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