YARA · Malpedia signator rules
MALPEDIA_Win_Vanhelsing_Auto
autogenerated rule brought to you by yara-signator
MalwareVanhelsingMalpedia 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: Vanhelsing.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-vanhelsing-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Vanhelsing_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "4d1a343a-0c6b-5c37-9695-c6037c02d0e0"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.vanhelsing"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.vanhelsing_auto.yar#L1-L133"
= "N/A"
= "ccbfeac61004bf4c8294fe46b3e9097ef1cf43d2830ff6b8aa99cc9635698e18"
= 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 = { 8b458c 038508ffffff 1395c0feffff 03856cffffff 898524ffffff 139530ffffff 33850cffffff }
$sequence_1 = { 898d1cffffff 03ca 89b568ffffff 13b508ffffff 33d9 33c6 898d64ffffff }
$sequence_2 = { 8b45ac 0f1006 0f57c8 8b4db0 0f289580feffff 0f289d70feffff 0f1108 }
$sequence_3 = { 898d08ffffff 138568ffffff 33d9 33d0 899d68ffffff c1a568ffffff10 0facd310 }
$sequence_4 = { 898df4feffff 33c6 8b8d6cffffff 8bf0 33ca c1e610 0facc810 }
$sequence_5 = { 0bf9 8b8d44ffffff 03c2 898564ffffff 13cf 89950cffffff 33c6 }
$sequence_6 = { 8bc4 0f1045d0 83ec10 0f1100 8bc4 0f108560ffffff 0f1100 }
$sequence_7 = { 3bc8 740c 8b0cb514bd4800 46 85c9 75f0 }
$sequence_8 = { 55 8bec 8b450c ff7510 ff348544bc4800 ff7508 e8???????? }
$sequence_9 = { 83c220 03c2 83c40c 83c620 3bc7 8b459c 76db }
condition:
7 of them and filesize < 2981888
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8b458c 038508ffffff 1395c0feffff 03856cffffff 898524ffffff 139530ffffff 33850cffffff } | |
| $sequence_1 | hex | { 898d1cffffff 03ca 89b568ffffff 13b508ffffff 33d9 33c6 898d64ffffff } | |
| $sequence_2 | hex | { 8b45ac 0f1006 0f57c8 8b4db0 0f289580feffff 0f289d70feffff 0f1108 } | |
| $sequence_3 | hex | { 898d08ffffff 138568ffffff 33d9 33d0 899d68ffffff c1a568ffffff10 0facd310 } | |
| $sequence_4 | hex | { 898df4feffff 33c6 8b8d6cffffff 8bf0 33ca c1e610 0facc810 } | |
| $sequence_5 | hex | { 0bf9 8b8d44ffffff 03c2 898564ffffff 13cf 89950cffffff 33c6 } | |
| $sequence_6 | hex | { 8bc4 0f1045d0 83ec10 0f1100 8bc4 0f108560ffffff 0f1100 } | |
| $sequence_7 | hex | { 3bc8 740c 8b0cb514bd4800 46 85c9 75f0 } | |
| $sequence_8 | hex | { 55 8bec 8b450c ff7510 ff348544bc4800 ff7508 e8???????? } | |
| $sequence_9 | hex | { 83c220 03c2 83c40c 83c620 3bc7 8b459c 76db } |
Condition
7 of them and filesize < 2981888In plain words (Heuristic)
- The file must be smaller than 2981888 (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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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: 4d1a343a-0c6b-5c37-9695-c6037c02d0e0
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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