YARA · Malpedia signator rules
MALPEDIA_Win_Unidentified_077_Auto
autogenerated rule brought to you by yara-signator
- 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
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-unidentified-077-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_077_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "3b8ce629-be81-5718-b343-4456bf84f34b"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_077"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_077_auto.yar#L1-L113"
= "N/A"
= "92845c8e7f25ff0c6256c08ed3227d9541fa707c62bf6ffcfe21d1a372a280ec"
= 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 = { e8???????? 85c0 740c 488d0dc9060000 }
$sequence_1 = { 48ffc1 3a440eff 7513 4883f907 75ed }
$sequence_2 = { 44896c2444 418d45ff 0fb68c8252400100 0fb6b48253400100 8bd9 8bf8 }
$sequence_3 = { 4c8bea 4c8be1 4883fa40 7312 }
$sequence_4 = { 48894638 488d059cfcffff 48894640 488d05a1fcffff }
$sequence_5 = { 4c8bea f04f0fb1bcf1a0bf0100 4c8b05???????? 4883cfff 418bc8 }
$sequence_6 = { 4c8bf0 4885c0 751b ff15???????? 488bce 418907 }
$sequence_7 = { 48895c2458 ff15???????? 488bf8 4885c0 }
$sequence_8 = { 7407 483bdf 747a eb73 4d8bbcf700310100 33d2 498bcf }
$sequence_9 = { 0f84be000000 8b7500 33c0 f04d0fb1bcf180bf0100 }
condition:
7 of them and filesize < 270336
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { e8???????? 85c0 740c 488d0dc9060000 } | |
| $sequence_1 | hex | { 48ffc1 3a440eff 7513 4883f907 75ed } | |
| $sequence_2 | hex | { 44896c2444 418d45ff 0fb68c8252400100 0fb6b48253400100 8bd9 8bf8 } | |
| $sequence_3 | hex | { 4c8bea 4c8be1 4883fa40 7312 } | |
| $sequence_4 | hex | { 48894638 488d059cfcffff 48894640 488d05a1fcffff } | |
| $sequence_5 | hex | { 4c8bea f04f0fb1bcf1a0bf0100 4c8b05???????? 4883cfff 418bc8 } | |
| $sequence_6 | hex | { 4c8bf0 4885c0 751b ff15???????? 488bce 418907 } | |
| $sequence_7 | hex | { 48895c2458 ff15???????? 488bf8 4885c0 } | |
| $sequence_8 | hex | { 7407 483bdf 747a eb73 4d8bbcf700310100 33d2 498bcf } | |
| $sequence_9 | hex | { 0f84be000000 8b7500 33c0 f04d0fb1bcf180bf0100 } |
Condition
7 of them and filesize < 270336In plain words (Heuristic)
- The file must be smaller than 270336 (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: 3b8ce629-be81-5718-b343-4456bf84f34b
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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