YARA · Malpedia signator rules
MALPEDIA_Win_Dorshel_Auto
autogenerated rule brought to you by yara-signator
MalwareDorshelMalpedia 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: Dorshel.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-dorshel-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Dorshel_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "550d8628-f52a-56de-91a7-ece0c38b96fb"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.dorshel"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.dorshel_auto.yar#L1-L124"
= "N/A"
= "364203df24c6a83e17731caab6caa244bb9a531055fdc65fef6d763de8c4fb40"
= 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 = { 55 8bec 83ec0c 31c0 648b5030 8b520c 8b5214 }
$sequence_1 = { 8d7708 8b3f 33fb f3a4 5f }
$sequence_2 = { 03f8 84c0 75f6 81ff5e515e83 7408 81ff36cadb30 75da }
$sequence_3 = { 83c004 e2f9 58 54 50 }
$sequence_4 = { 51 8b0f 33cb 51 ff55f8 8b5df4 }
$sequence_5 = { 54 50 8b4f04 33cb 51 8b0f }
$sequence_6 = { ffd5 85c0 74cd 8b07 01c3 }
$sequence_7 = { ac c1cf0d 03f8 84c0 75f6 81ff5e515e83 7408 }
$sequence_8 = { 57 6800200000 53 56 68129689e2 ffd5 85c0 }
$sequence_9 = { 5f 8b4704 33c3 83c104 99 }
condition:
7 of them and filesize < 24576
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 55 8bec 83ec0c 31c0 648b5030 8b520c 8b5214 } | |
| $sequence_1 | hex | { 8d7708 8b3f 33fb f3a4 5f } | |
| $sequence_2 | hex | { 03f8 84c0 75f6 81ff5e515e83 7408 81ff36cadb30 75da } | |
| $sequence_3 | hex | { 83c004 e2f9 58 54 50 } | |
| $sequence_4 | hex | { 51 8b0f 33cb 51 ff55f8 8b5df4 } | |
| $sequence_5 | hex | { 54 50 8b4f04 33cb 51 8b0f } | |
| $sequence_6 | hex | { ffd5 85c0 74cd 8b07 01c3 } | |
| $sequence_7 | hex | { ac c1cf0d 03f8 84c0 75f6 81ff5e515e83 7408 } | |
| $sequence_8 | hex | { 57 6800200000 53 56 68129689e2 ffd5 85c0 } | |
| $sequence_9 | hex | { 5f 8b4704 33c3 83c104 99 } |
Condition
7 of them and filesize < 24576In plain words (Heuristic)
- The file must be smaller than 24576 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: 550d8628-f52a-56de-91a7-ece0c38b96fb
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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