YARA · Malpedia signator rules
MALPEDIA_Win_Shakti_Auto
autogenerated rule brought to you by yara-signator
- 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: Shakti.
It defines 16 patterns (0 text, 16 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-shakti-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Shakti_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "1743fd4e-953a-51a5-918d-416d515e0593"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.shakti"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.shakti_auto.yar#L1-L175"
= "N/A"
= "97bf351c0e8aee24a7919bc62c51ec3706084eeee07b396176aa22730824e170"
= 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 = { 0345bc 8945bc 8b4db8 83c101 894db8 8b55b8 }
$sequence_1 = { 8b55e0 8b45d8 03420c 8945cc 8b4de0 8b55c0 }
$sequence_2 = { 8b4dc0 83e901 894dc0 ebb0 648b1530000000 8955d8 8b45d8 }
$sequence_3 = { 03513c 8955d0 8b45d0 83c078 8945ec 8b4dec }
$sequence_4 = { 0311 8955fc 8b45fc 83780c00 0f84e2000000 8b4dfc 8b55d8 }
$sequence_5 = { 0311 8955dc eb14 817de854caaf91 750b }
$sequence_6 = { 668b45c8 6683e801 668945c8 0fb74dc8 85c9 75b1 }
$sequence_7 = { 0f848b000000 8b4de0 8b5128 8955cc 8b45e0 668b4824 }
$sequence_8 = { 837dd400 a1???????? 7423 c700b8000000 }
$sequence_9 = { 33ff 8db7d0a34000 ff36 e8???????? 83c704 }
$sequence_10 = { 8d0433 50 ff759c ff15???????? 85c0 740d 837d9000 }
$sequence_11 = { 83c410 85c0 0f85a9000000 2145f8 85db 767f 8b4df8 }
$sequence_12 = { 7507 66837d6c02 eb0b 837de002 7516 }
$sequence_13 = { 8b7de4 8d45e8 50 6a40 }
$sequence_14 = { 59 e8???????? 83c40c 85c0 7408 ff75f0 e9???????? }
$sequence_15 = { 894588 8b85c0000000 be05010000 56 894584 }
condition:
7 of them and filesize < 191488
}
Strings (16 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 0345bc 8945bc 8b4db8 83c101 894db8 8b55b8 } | |
| $sequence_1 | hex | { 8b55e0 8b45d8 03420c 8945cc 8b4de0 8b55c0 } | |
| $sequence_2 | hex | { 8b4dc0 83e901 894dc0 ebb0 648b1530000000 8955d8 8b45d8 } | |
| $sequence_3 | hex | { 03513c 8955d0 8b45d0 83c078 8945ec 8b4dec } | |
| $sequence_4 | hex | { 0311 8955fc 8b45fc 83780c00 0f84e2000000 8b4dfc 8b55d8 } | |
| $sequence_5 | hex | { 0311 8955dc eb14 817de854caaf91 750b } | |
| $sequence_6 | hex | { 668b45c8 6683e801 668945c8 0fb74dc8 85c9 75b1 } | |
| $sequence_7 | hex | { 0f848b000000 8b4de0 8b5128 8955cc 8b45e0 668b4824 } | |
| $sequence_8 | hex | { 837dd400 a1???????? 7423 c700b8000000 } | |
| $sequence_9 | hex | { 33ff 8db7d0a34000 ff36 e8???????? 83c704 } | |
| $sequence_10 | hex | { 8d0433 50 ff759c ff15???????? 85c0 740d 837d9000 } | |
| $sequence_11 | hex | { 83c410 85c0 0f85a9000000 2145f8 85db 767f 8b4df8 } | |
| $sequence_12 | hex | { 7507 66837d6c02 eb0b 837de002 7516 } | |
| $sequence_13 | hex | { 8b7de4 8d45e8 50 6a40 } | |
| $sequence_14 | hex | { 59 e8???????? 83c40c 85c0 7408 ff75f0 e9???????? } | |
| $sequence_15 | hex | { 894588 8b85c0000000 be05010000 56 894584 } |
Condition
7 of them and filesize < 191488In plain words (Heuristic)
- The file must be smaller than 191488 (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: 1743fd4e-953a-51a5-918d-416d515e0593
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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