YARA · Malpedia signator rules
MALPEDIA_Win_Alma_Locker_Auto
autogenerated rule brought to you by yara-signator
MalwareAlma LockerMalpedia 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: Alma Locker.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-alma-locker-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Alma_Locker_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "07302dbe-c268-5129-a176-209dc26a0b60"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.alma_locker"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.alma_locker_auto.yar#L1-L130"
= "N/A"
= "1f3ecd5bf2c205888505143d49753a7baa657590e8b3f73ad8b38ff230d6db7b"
= 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 = { 85f6 7403 56 ffd7 68???????? 8d5508 8d8db4feffff }
$sequence_1 = { 6a00 0f4345d4 6880000000 6a04 6a00 6a01 6a02 }
$sequence_2 = { eb90 83ec18 33c0 8bcc 89642420 6aff 50 }
$sequence_3 = { e8???????? 8a45e0 83c40c 84c0 7424 8ad8 }
$sequence_4 = { 83c404 837db810 8d55a4 ff75b4 0f4355a4 8d8d5cffffff c745a00f000000 }
$sequence_5 = { 50 ff510c 8d4db0 c645fc01 8bf8 e8???????? }
$sequence_6 = { 33c0 c78540ffffff07000000 68???????? 8d5508 c7853cffffff00000000 8d8d14ffffff 6689852cffffff }
$sequence_7 = { 8d0441 c68558fbffff00 8d8db8fbffff 0f438db8fbffff 50 51 }
$sequence_8 = { 75e8 895e10 83f808 720f 8b06 33c9 }
$sequence_9 = { c645d400 720e ffb55cffffff e8???????? 83c404 83ec18 8bcc }
condition:
7 of them and filesize < 335872
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 85f6 7403 56 ffd7 68???????? 8d5508 8d8db4feffff } | |
| $sequence_1 | hex | { 6a00 0f4345d4 6880000000 6a04 6a00 6a01 6a02 } | |
| $sequence_2 | hex | { eb90 83ec18 33c0 8bcc 89642420 6aff 50 } | |
| $sequence_3 | hex | { e8???????? 8a45e0 83c40c 84c0 7424 8ad8 } | |
| $sequence_4 | hex | { 83c404 837db810 8d55a4 ff75b4 0f4355a4 8d8d5cffffff c745a00f000000 } | |
| $sequence_5 | hex | { 50 ff510c 8d4db0 c645fc01 8bf8 e8???????? } | |
| $sequence_6 | hex | { 33c0 c78540ffffff07000000 68???????? 8d5508 c7853cffffff00000000 8d8d14ffffff 6689852cffffff } | |
| $sequence_7 | hex | { 8d0441 c68558fbffff00 8d8db8fbffff 0f438db8fbffff 50 51 } | |
| $sequence_8 | hex | { 75e8 895e10 83f808 720f 8b06 33c9 } | |
| $sequence_9 | hex | { c645d400 720e ffb55cffffff e8???????? 83c404 83ec18 8bcc } |
Condition
7 of them and filesize < 335872In plain words (Heuristic)
- The file must be smaller than 335872 (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: 07302dbe-c268-5129-a176-209dc26a0b60
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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