YARA · Malpedia signator rules
MALPEDIA_Win_Sage_Ransom_Auto
autogenerated rule brought to you by yara-signator
MalwareSage RansomMalpedia 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: Sage Ransom.
It defines 16 patterns (0 text, 16 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-sage-ransom-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Sage_Ransom_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "3a539e9d-a70e-5ad2-9b0e-112b996f2a74"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.sage_ransom"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.sage_ransom_auto.yar#L1-L169"
= "N/A"
= "2d47f12a7cf9280840e859322435f629337f5cf352768d420cf4b487a986726d"
= 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 = { 56 e8???????? 83c410 33c0 85ff 7419 803c302b }
$sequence_1 = { 6a20 83c620 8d442408 56 50 e8???????? }
$sequence_2 = { 56 ff15???????? 83f8ff 7515 56 ff15???????? 6a11 }
$sequence_3 = { 8d4c2440 51 8d542464 52 e8???????? 8b84243c010000 83c020 }
$sequence_4 = { 894e04 8b502c 8d4c3f02 51 8916 }
$sequence_5 = { e8???????? 83c404 bbfdffffff 8d4c240c 51 e8???????? 8d54241c }
$sequence_6 = { ff15???????? 5f 33c0 5e 59 c3 56 }
$sequence_7 = { 51 e8???????? 83c41c 85c0 7907 83c8ff }
$sequence_8 = { 014110 8b4314 014114 8b4318 }
$sequence_9 = { 014108 8b430c 01410c 8b4310 }
$sequence_10 = { 014114 8b4318 014118 8b431c }
$sequence_11 = { 891c24 89442404 e8???????? 891c24 c744240467000000 e8???????? }
$sequence_12 = { 013c13 83c102 46 ebd3 }
$sequence_13 = { 0101 8b4304 014104 8b4308 014108 }
$sequence_14 = { 01410c 8b4310 014110 8b4314 }
$sequence_15 = { 0119 117104 83c110 83c210 }
condition:
7 of them and filesize < 335872
}
Strings (16 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 56 e8???????? 83c410 33c0 85ff 7419 803c302b } | |
| $sequence_1 | hex | { 6a20 83c620 8d442408 56 50 e8???????? } | |
| $sequence_2 | hex | { 56 ff15???????? 83f8ff 7515 56 ff15???????? 6a11 } | |
| $sequence_3 | hex | { 8d4c2440 51 8d542464 52 e8???????? 8b84243c010000 83c020 } | |
| $sequence_4 | hex | { 894e04 8b502c 8d4c3f02 51 8916 } | |
| $sequence_5 | hex | { e8???????? 83c404 bbfdffffff 8d4c240c 51 e8???????? 8d54241c } | |
| $sequence_6 | hex | { ff15???????? 5f 33c0 5e 59 c3 56 } | |
| $sequence_7 | hex | { 51 e8???????? 83c41c 85c0 7907 83c8ff } | |
| $sequence_8 | hex | { 014110 8b4314 014114 8b4318 } | |
| $sequence_9 | hex | { 014108 8b430c 01410c 8b4310 } | |
| $sequence_10 | hex | { 014114 8b4318 014118 8b431c } | |
| $sequence_11 | hex | { 891c24 89442404 e8???????? 891c24 c744240467000000 e8???????? } | |
| $sequence_12 | hex | { 013c13 83c102 46 ebd3 } | |
| $sequence_13 | hex | { 0101 8b4304 014104 8b4308 014108 } | |
| $sequence_14 | hex | { 01410c 8b4310 014110 8b4314 } | |
| $sequence_15 | hex | { 0119 117104 83c110 83c210 } |
Condition
7 of them and filesize < 335872In plain words (Heuristic)
- The file must be smaller than 335872 (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: 3a539e9d-a70e-5ad2-9b0e-112b996f2a74
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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