YARA · Malpedia signator rules
MALPEDIA_Win_Arik_Keylogger_Auto
autogenerated rule brought to you by yara-signator
MalwareArik KeyloggerMalpedia 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: Arik Keylogger.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-arik-keylogger-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Arik_Keylogger_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "b0311ca3-627a-5968-b029-012ac51a5f7c"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.arik_keylogger"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.arik_keylogger_auto.yar#L1-L134"
= "N/A"
= "592a4c082fb68dfba79c1bf1a643e4af63cabe72de760074843b8d1125833f72"
= 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 = { b8???????? e8???????? 83f801 0f85cb000000 8d45b8 e8???????? c745b800000000 }
$sequence_1 = { 8d45c4 b100 ba30000000 e8???????? 803d????????00 7410 c745c42c000000 }
$sequence_2 = { db7dc0 8d55c0 8955ec c745e803000000 dd4508 db7db0 8d55b0 }
$sequence_3 = { 8975b4 897db8 8945fc 8b4508 e8???????? c745bc00000000 8d4ddc }
$sequence_4 = { 8b835c010000 39f0 0f8486000000 85f6 7430 89f2 b8???????? }
$sequence_5 = { ff92e8000000 89d8 ba0a000000 e8???????? eb17 8b8354010000 83f80a }
$sequence_6 = { ff45b8 e9???????? 8b4510 8b00 8b5580 8b0490 40 }
$sequence_7 = { ff75f8 6898010000 ff75ec e8???????? 83f8ff 7406 c645f001 }
$sequence_8 = { 7426 48 743e 48 7461 e9???????? 8b4df0 }
$sequence_9 = { ff5178 8b55d4 a1???????? 8b0d???????? 8b09 ff91c8000000 89c7 }
condition:
7 of them and filesize < 4947968
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { b8???????? e8???????? 83f801 0f85cb000000 8d45b8 e8???????? c745b800000000 } | |
| $sequence_1 | hex | { 8d45c4 b100 ba30000000 e8???????? 803d????????00 7410 c745c42c000000 } | |
| $sequence_2 | hex | { db7dc0 8d55c0 8955ec c745e803000000 dd4508 db7db0 8d55b0 } | |
| $sequence_3 | hex | { 8975b4 897db8 8945fc 8b4508 e8???????? c745bc00000000 8d4ddc } | |
| $sequence_4 | hex | { 8b835c010000 39f0 0f8486000000 85f6 7430 89f2 b8???????? } | |
| $sequence_5 | hex | { ff92e8000000 89d8 ba0a000000 e8???????? eb17 8b8354010000 83f80a } | |
| $sequence_6 | hex | { ff45b8 e9???????? 8b4510 8b00 8b5580 8b0490 40 } | |
| $sequence_7 | hex | { ff75f8 6898010000 ff75ec e8???????? 83f8ff 7406 c645f001 } | |
| $sequence_8 | hex | { 7426 48 743e 48 7461 e9???????? 8b4df0 } | |
| $sequence_9 | hex | { ff5178 8b55d4 a1???????? 8b0d???????? 8b09 ff91c8000000 89c7 } |
Condition
7 of them and filesize < 4947968In plain words (Heuristic)
- The file must be smaller than 4947968 (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: b0311ca3-627a-5968-b029-012ac51a5f7c
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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