YARA · Malpedia signator rules
MALPEDIA_Win_Freenki_Auto
autogenerated rule brought to you by yara-signator
MalwareFreenkiMalpedia 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: Freenki.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-freenki-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Freenki_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "67d32a2a-d637-58a9-8610-92987f338d68"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.freenki"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.freenki_auto.yar#L1-L119"
= "N/A"
= "5c9ee79650e79e88185f6c330eec821bed1141aec7128d72a60a985d0e9bdda0"
= 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 = { 0f84d3000000 8b048de4db4100 89859cf8ffff 85c0 0f8498000000 }
$sequence_1 = { c785c0edffff00000000 50 51 8d8dccedffff c785e0edffff07000000 c785dcedffff00000000 }
$sequence_2 = { 6a33 8bd9 e8???????? 68???????? }
$sequence_3 = { 8d85ccedffff 50 56 e8???????? 8b8de0edffff }
$sequence_4 = { 3bc2 7d08 320c30 40 3bc2 }
$sequence_5 = { 59 85c0 7471 8b45f0 8b4de8 8b048578394200 }
$sequence_6 = { 8955e0 8b048d78394200 0fb6441028 83e001 747c }
$sequence_7 = { eb1e 8b45fc 3bd6 8b0c8578394200 0f95c0 02c0 }
$sequence_8 = { 85ff 75f2 897e10 83f908 720f 8b06 33c9 }
$sequence_9 = { 83c420 85ff 746a 6690 8bce 33c0 }
condition:
7 of them and filesize < 327680
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 0f84d3000000 8b048de4db4100 89859cf8ffff 85c0 0f8498000000 } | |
| $sequence_1 | hex | { c785c0edffff00000000 50 51 8d8dccedffff c785e0edffff07000000 c785dcedffff00000000 } | |
| $sequence_2 | hex | { 6a33 8bd9 e8???????? 68???????? } | |
| $sequence_3 | hex | { 8d85ccedffff 50 56 e8???????? 8b8de0edffff } | |
| $sequence_4 | hex | { 3bc2 7d08 320c30 40 3bc2 } | |
| $sequence_5 | hex | { 59 85c0 7471 8b45f0 8b4de8 8b048578394200 } | |
| $sequence_6 | hex | { 8955e0 8b048d78394200 0fb6441028 83e001 747c } | |
| $sequence_7 | hex | { eb1e 8b45fc 3bd6 8b0c8578394200 0f95c0 02c0 } | |
| $sequence_8 | hex | { 85ff 75f2 897e10 83f908 720f 8b06 33c9 } | |
| $sequence_9 | hex | { 83c420 85ff 746a 6690 8bce 33c0 } |
Condition
7 of them and filesize < 327680In plain words (Heuristic)
- The file must be smaller than 327680 (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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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: 67d32a2a-d637-58a9-8610-92987f338d68
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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