YARA · Malpedia signator rules
MALPEDIA_Win_Runningrat_Auto
autogenerated rule brought to you by yara-signator
MalwareRunningratMalpedia 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: Runningrat.
It defines 15 patterns (0 text, 15 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-runningrat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Runningrat_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "d4ae73e1-77c4-5c6d-b90f-aa390aa93cd3"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.runningrat"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.runningrat_auto.yar#L1-L160"
= "N/A"
= "af9c36c6cd0f2b297fc8137fa03b7170757e2be4dbf1da23b237e62f33931186"
= 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 = { ff15???????? 56 ff15???????? 8b8c2418010000 }
$sequence_1 = { e8???????? 8a4c2420 6a18 c744241c00000000 }
$sequence_2 = { e8???????? 85c0 7402 b301 8d4c240c e8???????? }
$sequence_3 = { 68???????? 68???????? ffd3 8b2d???????? 50 ffd5 68???????? }
$sequence_4 = { eb08 2bd1 8bc2 89542420 }
$sequence_5 = { a1???????? 33c4 89842464040000 53 56 }
$sequence_6 = { 85c0 7559 8b442418 8b4c2430 40 }
$sequence_7 = { 56 8bf1 8b4e34 8b6e1c 57 8bf8 }
$sequence_8 = { b914000000 e8???????? 8b54241c 8bf0 8b442418 b914000000 }
$sequence_9 = { 8b542424 3902 0f84e2000000 8b4c2434 8b542430 56 }
$sequence_10 = { 81c4f8020000 c20400 8b35???????? 6800000100 6a40 ffd6 8bd8 }
$sequence_11 = { 33c0 5b c3 b8feffffff }
$sequence_12 = { e8???????? 8d44241c 83c40c 48 8d4900 }
$sequence_13 = { 8b442424 c70100000000 8b4c2428 57 c70200000000 }
$sequence_14 = { d3e8 2be9 8b4e0c 89442414 8b4608 891481 ff4608 }
condition:
7 of them and filesize < 275456
}
Strings (15 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { ff15???????? 56 ff15???????? 8b8c2418010000 } | |
| $sequence_1 | hex | { e8???????? 8a4c2420 6a18 c744241c00000000 } | |
| $sequence_2 | hex | { e8???????? 85c0 7402 b301 8d4c240c e8???????? } | |
| $sequence_3 | hex | { 68???????? 68???????? ffd3 8b2d???????? 50 ffd5 68???????? } | |
| $sequence_4 | hex | { eb08 2bd1 8bc2 89542420 } | |
| $sequence_5 | hex | { a1???????? 33c4 89842464040000 53 56 } | |
| $sequence_6 | hex | { 85c0 7559 8b442418 8b4c2430 40 } | |
| $sequence_7 | hex | { 56 8bf1 8b4e34 8b6e1c 57 8bf8 } | |
| $sequence_8 | hex | { b914000000 e8???????? 8b54241c 8bf0 8b442418 b914000000 } | |
| $sequence_9 | hex | { 8b542424 3902 0f84e2000000 8b4c2434 8b542430 56 } | |
| $sequence_10 | hex | { 81c4f8020000 c20400 8b35???????? 6800000100 6a40 ffd6 8bd8 } | |
| $sequence_11 | hex | { 33c0 5b c3 b8feffffff } | |
| $sequence_12 | hex | { e8???????? 8d44241c 83c40c 48 8d4900 } | |
| $sequence_13 | hex | { 8b442424 c70100000000 8b4c2428 57 c70200000000 } | |
| $sequence_14 | hex | { d3e8 2be9 8b4e0c 89442414 8b4608 891481 ff4608 } |
Condition
7 of them and filesize < 275456In plain words (Heuristic)
- The file must be smaller than 275456 (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: d4ae73e1-77c4-5c6d-b90f-aa390aa93cd3
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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