YARA · Malpedia signator rules
MALPEDIA_Win_Rekoobew_Auto
autogenerated rule brought to you by yara-signator
MalwareRekoobewMalpedia 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: Rekoobew.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-rekoobew-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Rekoobew_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "8ee2b2ef-cb3c-5ded-93b0-251a94d316dc"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.rekoobew"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.rekoobew_auto.yar#L1-L130"
= "N/A"
= "611d5d6376ad3bfd0022c8516f8f73ea917b68256cff7e917d5134c7e5ac0c95"
= 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 = { 29d8 89442408 89742404 8b4508 890424 e8???????? 85c0 }
$sequence_1 = { c740241cb04000 8910 c7401898654000 c7401ca06a4000 c74020a86a4000 c74044b06a4000 }
$sequence_2 = { 0f85c4020000 a1???????? 8945d8 a1???????? 8945dc a1???????? 8945e0 }
$sequence_3 = { 8b47fc 8b3495e0984000 3377e0 0fb6d8 8b1c9de0944000 c1e308 31de }
$sequence_4 = { 334dec d1c1 894dd8 8d8408a1ebd96e 8945f0 89d0 31f8 }
$sequence_5 = { 884610 0fb7431a 884611 8b4318 c1e808 884612 }
$sequence_6 = { c1ea10 0fb6d2 333495e0884000 0fb6d5 8b1495e08c4000 31f2 8955e8 }
$sequence_7 = { 897dc8 8d9c3bdcbc1b8f 89d7 09cf 21c7 897d98 89d7 }
$sequence_8 = { 8b7d08 8807 83c701 897d08 80f93d }
$sequence_9 = { 89c2 c1ea08 8855f6 8845f7 c1e803 83e03f 83f837 }
condition:
7 of them and filesize < 248832
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 29d8 89442408 89742404 8b4508 890424 e8???????? 85c0 } | |
| $sequence_1 | hex | { c740241cb04000 8910 c7401898654000 c7401ca06a4000 c74020a86a4000 c74044b06a4000 } | |
| $sequence_2 | hex | { 0f85c4020000 a1???????? 8945d8 a1???????? 8945dc a1???????? 8945e0 } | |
| $sequence_3 | hex | { 8b47fc 8b3495e0984000 3377e0 0fb6d8 8b1c9de0944000 c1e308 31de } | |
| $sequence_4 | hex | { 334dec d1c1 894dd8 8d8408a1ebd96e 8945f0 89d0 31f8 } | |
| $sequence_5 | hex | { 884610 0fb7431a 884611 8b4318 c1e808 884612 } | |
| $sequence_6 | hex | { c1ea10 0fb6d2 333495e0884000 0fb6d5 8b1495e08c4000 31f2 8955e8 } | |
| $sequence_7 | hex | { 897dc8 8d9c3bdcbc1b8f 89d7 09cf 21c7 897d98 89d7 } | |
| $sequence_8 | hex | { 8b7d08 8807 83c701 897d08 80f93d } | |
| $sequence_9 | hex | { 89c2 c1ea08 8855f6 8845f7 c1e803 83e03f 83f837 } |
Condition
7 of them and filesize < 248832In plain words (Heuristic)
- The file must be smaller than 248832 (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: 8ee2b2ef-cb3c-5ded-93b0-251a94d316dc
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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