YARA · Malpedia signator rules
MALPEDIA_Win_Hermes_Ransom_Auto
autogenerated rule brought to you by yara-signator
MalwareHermes RansomMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
- Author
- Felix Bilstein - yara-signator at cocacoding dot com
- Date
- 2021-10-07
- Modified
- 2021-10-08
- Score / Quality
- 75 / 75
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Hermes Ransom.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-hermes-ransom-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Hermes_Ransom_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "88136c82-87ab-5f89-8963-9afb9534a540"
= "2021-10-07"
= "2021-10-08"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.hermes_ransom"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.hermes_ransom_auto.yar#L1-L125"
= "N/A"
= "2bb9637b7e3ee9fcdd4e957eade001e8c8132e1b7c987ea6727ab44eda025915"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20211007"
= "e5b790e0f888f252d49063a1251ca60ec2832535"
= "20211008"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { 59 59 8945e0 837ddc00 7506 837de000 7405 }
$sequence_1 = { 8d45dc 50 ff75d8 8d8560ffffff 50 ff75e0 ff15???????? }
$sequence_2 = { 33c0 668945e2 33c0 8945e4 8945e8 837df020 }
$sequence_3 = { 6a00 8d85a4f9ffff 50 ff15???????? 5f 5e 8be5 }
$sequence_4 = { 0fb7844504f7ffff 83f83b 741f 8b45d8 8b4df0 668b8c4d04f7ffff }
$sequence_5 = { 8365c800 8365d000 c745b840420f00 8365e000 eb07 8b45e0 40 }
$sequence_6 = { 59 6bc900 668981e8c34000 6a02 }
$sequence_7 = { 59 59 6a0f 6a00 8d45bc 50 }
$sequence_8 = { 8365f000 8b45f0 8945f8 837df800 7456 }
$sequence_9 = { 83e002 7415 ff750c ff75fc e8???????? 59 }
condition:
7 of them and filesize < 7192576
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 59 59 8945e0 837ddc00 7506 837de000 7405 } | |
| $sequence_1 | hex | { 8d45dc 50 ff75d8 8d8560ffffff 50 ff75e0 ff15???????? } | |
| $sequence_2 | hex | { 33c0 668945e2 33c0 8945e4 8945e8 837df020 } | |
| $sequence_3 | hex | { 6a00 8d85a4f9ffff 50 ff15???????? 5f 5e 8be5 } | |
| $sequence_4 | hex | { 0fb7844504f7ffff 83f83b 741f 8b45d8 8b4df0 668b8c4d04f7ffff } | |
| $sequence_5 | hex | { 8365c800 8365d000 c745b840420f00 8365e000 eb07 8b45e0 40 } | |
| $sequence_6 | hex | { 59 6bc900 668981e8c34000 6a02 } | |
| $sequence_7 | hex | { 59 59 6a0f 6a00 8d45bc 50 } | |
| $sequence_8 | hex | { 8365f000 8b45f0 8945f8 837df800 7456 } | |
| $sequence_9 | hex | { 83e002 7415 ff750c ff75fc e8???????? 59 } |
Condition
7 of them and filesize < 7192576In plain words (Heuristic)
- The file must be smaller than 7192576 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
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: 88136c82-87ab-5f89-8963-9afb9534a540
Metadata
| version | 1 |
|---|---|
| tool | yara-signator v0.6.0 |
| signator_config | callsandjumps;datarefs;binvalue |
| malpedia_rule_date | 20211007 |
| malpedia_hash | e5b790e0f888f252d49063a1251ca60ec2832535 |
| malpedia_version | 20211008 |
| malpedia_license | CC BY-SA 4.0 |
| malpedia_sharing | TLP:WHITE |
Tags:FILE
Related rules
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04