YARA · Malpedia signator rules
MALPEDIA_Win_Rifdoor_Auto
autogenerated rule brought to you by yara-signator
MalwareRifdoorMalpedia 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: Rifdoor.
It defines 16 patterns (0 text, 16 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-rifdoor-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Rifdoor_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "a31f7bd0-1ed0-5fd9-873c-451f99775a1c"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.rifdoor"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.rifdoor_auto.yar#L1-L174"
= "N/A"
= "b71b1ed569a75b60e54eb60641d1720e666f05f6f32fa3269807a7fb2d81288b"
= 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 = { 57 ffd6 8d4c2410 a3???????? 51 b810000000 }
$sequence_1 = { ff15???????? 5f b001 5e 81c408010000 }
$sequence_2 = { e8???????? 8b4de4 83c40c 6bc930 8975e0 8db1304b4100 }
$sequence_3 = { 02c9 02c9 880c30 eb26 }
$sequence_4 = { 85d2 7e6d 83f93d 7468 83f920 }
$sequence_5 = { 52 b808000000 b9???????? 895c2414 e8???????? 8be8 }
$sequence_6 = { e8???????? 83c410 6a00 8d84240c010000 50 ff15???????? 6a00 }
$sequence_7 = { c3 397c240c 74e1 ba4f000000 8bc2 }
$sequence_8 = { 52 8d45e8 50 8d8de8f7ffff }
$sequence_9 = { b9843a0000 81fb843a0000 7702 8bcb 2bd9 be2c1a0000 33ff }
$sequence_10 = { eb08 ff15???????? 33c9 b873b2e745 f72d???????? }
$sequence_11 = { 83c103 51 ffd3 a3???????? eb2c 8b14b7 83c203 }
$sequence_12 = { 83c40c 8d8d68fcffff 51 8d9574fcffff 52 6a00 }
$sequence_13 = { 68ff000000 e8???????? 59 59 8b7508 8d34f5000d4100 391e }
$sequence_14 = { ff15???????? 8bf8 83ffff 0f84bb000000 53 }
$sequence_15 = { c785e4bcffff44000000 899d1cbdffff c78510bdffff01010000 66898514bdffff 33f6 8d642400 8d8d40bdffff }
condition:
7 of them and filesize < 212992
}
Strings (16 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 57 ffd6 8d4c2410 a3???????? 51 b810000000 } | |
| $sequence_1 | hex | { ff15???????? 5f b001 5e 81c408010000 } | |
| $sequence_2 | hex | { e8???????? 8b4de4 83c40c 6bc930 8975e0 8db1304b4100 } | |
| $sequence_3 | hex | { 02c9 02c9 880c30 eb26 } | |
| $sequence_4 | hex | { 85d2 7e6d 83f93d 7468 83f920 } | |
| $sequence_5 | hex | { 52 b808000000 b9???????? 895c2414 e8???????? 8be8 } | |
| $sequence_6 | hex | { e8???????? 83c410 6a00 8d84240c010000 50 ff15???????? 6a00 } | |
| $sequence_7 | hex | { c3 397c240c 74e1 ba4f000000 8bc2 } | |
| $sequence_8 | hex | { 52 8d45e8 50 8d8de8f7ffff } | |
| $sequence_9 | hex | { b9843a0000 81fb843a0000 7702 8bcb 2bd9 be2c1a0000 33ff } | |
| $sequence_10 | hex | { eb08 ff15???????? 33c9 b873b2e745 f72d???????? } | |
| $sequence_11 | hex | { 83c103 51 ffd3 a3???????? eb2c 8b14b7 83c203 } | |
| $sequence_12 | hex | { 83c40c 8d8d68fcffff 51 8d9574fcffff 52 6a00 } | |
| $sequence_13 | hex | { 68ff000000 e8???????? 59 59 8b7508 8d34f5000d4100 391e } | |
| $sequence_14 | hex | { ff15???????? 8bf8 83ffff 0f84bb000000 53 } | |
| $sequence_15 | hex | { c785e4bcffff44000000 899d1cbdffff c78510bdffff01010000 66898514bdffff 33f6 8d642400 8d8d40bdffff } |
Condition
7 of them and filesize < 212992In plain words (Heuristic)
- The file must be smaller than 212992 (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: a31f7bd0-1ed0-5fd9-873c-451f99775a1c
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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