YARA · Malpedia signator rules
MALPEDIA_Win_Sepulcher_Auto
autogenerated rule brought to you by yara-signator
MalwareSepulcherMalpedia 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: Sepulcher.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-sepulcher-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Sepulcher_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "a6431b51-e633-5c7f-aae9-b755f6d76c30"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.sepulcher"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.sepulcher_auto.yar#L1-L125"
= "N/A"
= "29a2e79b7f9b4200c42a42b4ebc98c4eddd3e5b31679b40d2090401136cf8e8a"
= 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 = { 8bf9 0fb64722 83e801 7439 }
$sequence_1 = { e8???????? 85c0 0f8434030000 6828080000 33ff 8d85ccf7ffff 57 }
$sequence_2 = { 741c 85db 7507 c746346c5c0110 57 ff7634 c6463c01 }
$sequence_3 = { 8b4508 83c40c 89851cd8ffff 8b8618250000 898540d8ffff }
$sequence_4 = { 8a1c01 eb40 8a5dff eb3b 8b4f30 8b4718 f6c101 }
$sequence_5 = { 8d8424f0040000 50 ffd6 6a10 59 }
$sequence_6 = { 7437 3df2030000 7530 56 6a00 68???????? eb1c }
$sequence_7 = { 59 6a25 8bfa f3ab 59 6a64 58 }
$sequence_8 = { 56 50 68???????? 8d8424d4710000 6800040000 50 }
$sequence_9 = { 7428 ba00010000 663bc2 741e ba00020000 663bc2 }
condition:
7 of them and filesize < 279552
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8bf9 0fb64722 83e801 7439 } | |
| $sequence_1 | hex | { e8???????? 85c0 0f8434030000 6828080000 33ff 8d85ccf7ffff 57 } | |
| $sequence_2 | hex | { 741c 85db 7507 c746346c5c0110 57 ff7634 c6463c01 } | |
| $sequence_3 | hex | { 8b4508 83c40c 89851cd8ffff 8b8618250000 898540d8ffff } | |
| $sequence_4 | hex | { 8a1c01 eb40 8a5dff eb3b 8b4f30 8b4718 f6c101 } | |
| $sequence_5 | hex | { 8d8424f0040000 50 ffd6 6a10 59 } | |
| $sequence_6 | hex | { 7437 3df2030000 7530 56 6a00 68???????? eb1c } | |
| $sequence_7 | hex | { 59 6a25 8bfa f3ab 59 6a64 58 } | |
| $sequence_8 | hex | { 56 50 68???????? 8d8424d4710000 6800040000 50 } | |
| $sequence_9 | hex | { 7428 ba00010000 663bc2 741e ba00020000 663bc2 } |
Condition
7 of them and filesize < 279552In plain words (Heuristic)
- The file must be smaller than 279552 (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: a6431b51-e633-5c7f-aae9-b755f6d76c30
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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