YARA · Malpedia signator rules
MALPEDIA_Win_Splitloader_Auto
autogenerated rule brought to you by yara-signator
MalwareSplitloaderMalpedia 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: Splitloader.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-splitloader-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Splitloader_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "921d3356-2722-53ac-8250-dd0cc7ea5e5b"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.splitloader"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.splitloader_auto.yar#L1-L122"
= "N/A"
= "d6a390b70948f794f39be9da944fc8149cfb46ac0abcc61ba408624052ca713e"
= 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 = { 418b8424f82a0000 4129b424fc2a0000 297518 01751c 418b8c24fc2a0000 03c6 }
$sequence_1 = { ffc2 4183f802 7514 81fa04010000 730c 4885c9 }
$sequence_2 = { 4883c108 48ffcb 7409 488b05???????? ebe6 4533c0 488d1593970000 }
$sequence_3 = { ff15???????? 85c0 7445 4863ef 488d0dfcb20000 }
$sequence_4 = { 4883c002 66443918 74f6 0fb708 85c9 7467 }
$sequence_5 = { 7436 90 66413bc1 742f }
$sequence_6 = { 488b442470 4c2bdb 4c8918 41f6c209 0f8432010000 4585e4 0f8829010000 }
$sequence_7 = { ff15???????? 448b5c2440 41bc08000000 8bd6 458bd4 448bce }
$sequence_8 = { eb0a 4883c002 41ba22000000 0fb708 6683f922 7438 90 }
$sequence_9 = { 6644391f 750e 0f1f4000 4883c702 }
condition:
7 of them and filesize < 174080
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 418b8424f82a0000 4129b424fc2a0000 297518 01751c 418b8c24fc2a0000 03c6 } | |
| $sequence_1 | hex | { ffc2 4183f802 7514 81fa04010000 730c 4885c9 } | |
| $sequence_2 | hex | { 4883c108 48ffcb 7409 488b05???????? ebe6 4533c0 488d1593970000 } | |
| $sequence_3 | hex | { ff15???????? 85c0 7445 4863ef 488d0dfcb20000 } | |
| $sequence_4 | hex | { 4883c002 66443918 74f6 0fb708 85c9 7467 } | |
| $sequence_5 | hex | { 7436 90 66413bc1 742f } | |
| $sequence_6 | hex | { 488b442470 4c2bdb 4c8918 41f6c209 0f8432010000 4585e4 0f8829010000 } | |
| $sequence_7 | hex | { ff15???????? 448b5c2440 41bc08000000 8bd6 458bd4 448bce } | |
| $sequence_8 | hex | { eb0a 4883c002 41ba22000000 0fb708 6683f922 7438 90 } | |
| $sequence_9 | hex | { 6644391f 750e 0f1f4000 4883c702 } |
Condition
7 of them and filesize < 174080In plain words (Heuristic)
- The file must be smaller than 174080 (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: 921d3356-2722-53ac-8250-dd0cc7ea5e5b
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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