YARA · Malpedia signator rules
MALPEDIA_Elf_Persirai_Auto
autogenerated rule brought to you by yara-signator
MalwarePersiraiMalpedia 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: Persirai.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
elf-persirai-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Elf_Persirai_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "8f41a5d8-eee7-5846-8dc0-add30ed5cc27"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/elf.persirai"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/elf.persirai_auto.yar#L1-L128"
= "N/A"
= "29bb51aca07b20ef5152921753dd0e49613e61042ccf5ac4068c21ca622e998d"
= 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 = { 57 56 53 81ec0c280000 8bac2428280000 81bc2424280000ff270000 7779 }
$sequence_1 = { 31c0 81c4a4000000 5b 5e c3 89e2 }
$sequence_2 = { 894108 c7411420000000 5b 5e c3 }
$sequence_3 = { 57 56 53 83ec0c 89c7 be???????? }
$sequence_4 = { 53 e8???????? 66c744241c0200 83c410 eb16 66833b02 7410 }
$sequence_5 = { 56 53 83ec0c 89c7 be???????? }
$sequence_6 = { 83ec10 8b5c2418 ff74241c 53 e8???????? 83c410 83caff }
$sequence_7 = { 89c3 8b8424b4000000 8944241c 8b8424b8000000 89442420 8b8424bc000000 89442424 }
$sequence_8 = { 8b542418 89d0 83c41c c3 56 53 83c8ff }
$sequence_9 = { d1fa 0fb68292810508 c3 55 57 56 53 }
condition:
7 of them and filesize < 229376
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 57 56 53 81ec0c280000 8bac2428280000 81bc2424280000ff270000 7779 } | |
| $sequence_1 | hex | { 31c0 81c4a4000000 5b 5e c3 89e2 } | |
| $sequence_2 | hex | { 894108 c7411420000000 5b 5e c3 } | |
| $sequence_3 | hex | { 57 56 53 83ec0c 89c7 be???????? } | |
| $sequence_4 | hex | { 53 e8???????? 66c744241c0200 83c410 eb16 66833b02 7410 } | |
| $sequence_5 | hex | { 56 53 83ec0c 89c7 be???????? } | |
| $sequence_6 | hex | { 83ec10 8b5c2418 ff74241c 53 e8???????? 83c410 83caff } | |
| $sequence_7 | hex | { 89c3 8b8424b4000000 8944241c 8b8424b8000000 89442420 8b8424bc000000 89442424 } | |
| $sequence_8 | hex | { 8b542418 89d0 83c41c c3 56 53 83c8ff } | |
| $sequence_9 | hex | { d1fa 0fb68292810508 c3 55 57 56 53 } |
Condition
7 of them and filesize < 229376In plain words (Heuristic)
- The file must be smaller than 229376 (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: 8f41a5d8-eee7-5846-8dc0-add30ed5cc27
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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