YARA · Malpedia signator rules
MALPEDIA_Win_Multigrain_Pos_Auto
autogenerated rule brought to you by yara-signator
MalwareMultigrain PosMalpedia 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: Multigrain Pos.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-multigrain-pos-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Multigrain_Pos_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "a4a1cae2-1512-5d4d-8ce3-dd32c9bd5d2a"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.multigrain_pos"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.multigrain_pos_auto.yar#L1-L118"
= "N/A"
= "d5069ea6530260a05521f39bb3ca469cce973145cb25df99123096d23a4291a9"
= 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 = { 0fb609 83e101 c1e104 0b4df4 40 }
$sequence_1 = { 8b550c 46 83c702 3b01 0f823efeffff 8b55f8 }
$sequence_2 = { 68???????? 8bd0 8d8dd0fdffff c645fc01 }
$sequence_3 = { ff15???????? 33c0 c785ccfdffff07000000 c785c8fdffff00000000 668985b8fdffff 663985e8fdffff }
$sequence_4 = { e8???????? 894610 6800040000 8d4618 }
$sequence_5 = { 8bd0 8d4dd8 c645fc03 e8???????? }
$sequence_6 = { 8d45c0 50 e8???????? 8d45d8 50 c745fc00000000 e8???????? }
$sequence_7 = { 1bc0 f7d8 5e 5d c20800 85f6 750f }
$sequence_8 = { 83ec10 894df8 8bca 56 33c0 33f6 8955fc }
$sequence_9 = { e8???????? 83c418 8db324040000 8d5e14 }
condition:
7 of them and filesize < 286720
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 0fb609 83e101 c1e104 0b4df4 40 } | |
| $sequence_1 | hex | { 8b550c 46 83c702 3b01 0f823efeffff 8b55f8 } | |
| $sequence_2 | hex | { 68???????? 8bd0 8d8dd0fdffff c645fc01 } | |
| $sequence_3 | hex | { ff15???????? 33c0 c785ccfdffff07000000 c785c8fdffff00000000 668985b8fdffff 663985e8fdffff } | |
| $sequence_4 | hex | { e8???????? 894610 6800040000 8d4618 } | |
| $sequence_5 | hex | { 8bd0 8d4dd8 c645fc03 e8???????? } | |
| $sequence_6 | hex | { 8d45c0 50 e8???????? 8d45d8 50 c745fc00000000 e8???????? } | |
| $sequence_7 | hex | { 1bc0 f7d8 5e 5d c20800 85f6 750f } | |
| $sequence_8 | hex | { 83ec10 894df8 8bca 56 33c0 33f6 8955fc } | |
| $sequence_9 | hex | { e8???????? 83c418 8db324040000 8d5e14 } |
Condition
7 of them and filesize < 286720In plain words (Heuristic)
- The file must be smaller than 286720 (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: a4a1cae2-1512-5d4d-8ce3-dd32c9bd5d2a
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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