YARA · Malpedia signator rules
MALPEDIA_Win_Unidentified_081_Auto
autogenerated rule brought to you by yara-signator
- Author
- Felix Bilstein - yara-signator at cocacoding dot com
- Date
- 2023-12-06
- Modified
- 2023-12-08
- Score / Quality
- 75 / 75
What this rule detects
autogenerated rule brought to you by yara-signator
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-unidentified-081-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_081_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "4bef4e35-3450-5f50-98ad-424279417112"
= "2023-12-06"
= "2023-12-08"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_081"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_081_auto.yar#L1-L125"
= "N/A"
= "0bf113d92abe743278ae5a94b3d8f7a48f5ba7f91d2e79f1d3ac361b6c786f4e"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20231130"
= "fc8a0e9f343f6d6ded9e7df1a64dac0cc68d7351"
= "20230808"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { 8985c8fdffff 83f808 0f84ab090000 83f807 0f8777090000 ff24854fa44000 33c0 }
$sequence_1 = { c74518f0944100 50 8d4dc4 e8???????? 68???????? 8d45c4 }
$sequence_2 = { 68???????? b9???????? e8???????? c645fc03 33c0 }
$sequence_3 = { eb02 33c0 8bbdc8fdffff 6bc009 0fb6bc38e8544100 8bc7 89bdc8fdffff }
$sequence_4 = { 8b7508 c7465c48554100 83660800 33ff }
$sequence_5 = { c645fc01 33c9 66a3???????? 66390d???????? 8bc6 c705????????07000000 0f44c1 }
$sequence_6 = { 88440a34 8b049dd0d14100 c744023801000000 e9???????? ff15???????? 8bf8 }
$sequence_7 = { 83e61f c1f805 c1e606 8b0485d0d14100 80643004fd 8b45f8 }
$sequence_8 = { 6a01 6a00 f7d8 50 53 ff15???????? 8b8d34ffffff }
$sequence_9 = { ff15???????? 837c241001 7507 b101 e8???????? 8b35???????? }
condition:
7 of them and filesize < 273408
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8985c8fdffff 83f808 0f84ab090000 83f807 0f8777090000 ff24854fa44000 33c0 } | |
| $sequence_1 | hex | { c74518f0944100 50 8d4dc4 e8???????? 68???????? 8d45c4 } | |
| $sequence_2 | hex | { 68???????? b9???????? e8???????? c645fc03 33c0 } | |
| $sequence_3 | hex | { eb02 33c0 8bbdc8fdffff 6bc009 0fb6bc38e8544100 8bc7 89bdc8fdffff } | |
| $sequence_4 | hex | { 8b7508 c7465c48554100 83660800 33ff } | |
| $sequence_5 | hex | { c645fc01 33c9 66a3???????? 66390d???????? 8bc6 c705????????07000000 0f44c1 } | |
| $sequence_6 | hex | { 88440a34 8b049dd0d14100 c744023801000000 e9???????? ff15???????? 8bf8 } | |
| $sequence_7 | hex | { 83e61f c1f805 c1e606 8b0485d0d14100 80643004fd 8b45f8 } | |
| $sequence_8 | hex | { 6a01 6a00 f7d8 50 53 ff15???????? 8b8d34ffffff } | |
| $sequence_9 | hex | { ff15???????? 837c241001 7507 b101 e8???????? 8b35???????? } |
Condition
7 of them and filesize < 273408In plain words (Heuristic)
- The file must be smaller than 273408 (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: 4bef4e35-3450-5f50-98ad-424279417112
Metadata
| version | 1 |
|---|---|
| tool | yara-signator v0.6.0 |
| signator_config | callsandjumps;datarefs;binvalue |
| malpedia_rule_date | 20231130 |
| malpedia_hash | fc8a0e9f343f6d6ded9e7df1a64dac0cc68d7351 |
| malpedia_version | 20230808 |
| malpedia_license | CC BY-SA 4.0 |
| malpedia_sharing | TLP:WHITE |
Tags:FILE
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