YARA · Malpedia signator rules
MALPEDIA_Win_Revil_Auto
autogenerated rule brought to you by yara-signator
- 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: Revil.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-revil-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Revil_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "b1ad6f98-f355-58f7-9005-19954a2d15bd"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.revil"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.revil_auto.yar#L1-L121"
= "N/A"
= "5d33fffaf68198c6aae66933e5fea0ec5482714ebf11d122b8198c06a1f19c8f"
= 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 = { c1ee1f 0bd1 03c0 0bf0 8bc2 334324 8bce }
$sequence_1 = { 894df4 8b4e0c 334e34 334e5c 338e84000000 338eac000000 8955dc }
$sequence_2 = { 8dbd80feffff f3a5 50 e8???????? }
$sequence_3 = { 8b5a70 8b5274 0fa4fe12 c1e90e c1e712 0bc6 0bcf }
$sequence_4 = { 89463c 0bcb 894e38 33c0 8b7e58 8bca 8b765c }
$sequence_5 = { ff15???????? 8bf0 6a01 ff15???????? ff15???????? 3bf0 74ee }
$sequence_6 = { 894104 8bce f7d1 8bc2 234ddc }
$sequence_7 = { 0bcb 894a78 8bcf 89427c }
$sequence_8 = { 7508 85ff 0f850a010000 8b7518 b8c8000000 }
$sequence_9 = { 3bd6 72ee 8b7d14 8d8534ffffff }
condition:
7 of them and filesize < 155794432
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { c1ee1f 0bd1 03c0 0bf0 8bc2 334324 8bce } | |
| $sequence_1 | hex | { 894df4 8b4e0c 334e34 334e5c 338e84000000 338eac000000 8955dc } | |
| $sequence_2 | hex | { 8dbd80feffff f3a5 50 e8???????? } | |
| $sequence_3 | hex | { 8b5a70 8b5274 0fa4fe12 c1e90e c1e712 0bc6 0bcf } | |
| $sequence_4 | hex | { 89463c 0bcb 894e38 33c0 8b7e58 8bca 8b765c } | |
| $sequence_5 | hex | { ff15???????? 8bf0 6a01 ff15???????? ff15???????? 3bf0 74ee } | |
| $sequence_6 | hex | { 894104 8bce f7d1 8bc2 234ddc } | |
| $sequence_7 | hex | { 0bcb 894a78 8bcf 89427c } | |
| $sequence_8 | hex | { 7508 85ff 0f850a010000 8b7518 b8c8000000 } | |
| $sequence_9 | hex | { 3bd6 72ee 8b7d14 8d8534ffffff } |
Condition
7 of them and filesize < 155794432In plain words (Heuristic)
- The file must be smaller than 155794432 (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: b1ad6f98-f355-58f7-9005-19954a2d15bd
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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