YARA · Malpedia signator rules
MALPEDIA_Win_Pseudo_Manuscrypt_Auto
autogenerated rule brought to you by yara-signator
MalwarePseudo ManuscryptMalpedia 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: Pseudo Manuscrypt.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-pseudo-manuscrypt-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Pseudo_Manuscrypt_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "a2bb2d28-922c-5165-af00-8264e9dc198d"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.pseudo_manuscrypt"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.pseudo_manuscrypt_auto.yar#L1-L133"
= "N/A"
= "c1375ce99acff00af3750f77d989563b610b0d118b8fb67c014ab6172f438d65"
= 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 = { 8b0f 8b55f8 8b4708 2bc2 50 8d0411 50 }
$sequence_1 = { 8b36 8b4344 2bc6 85c0 7fbf 5f 5e }
$sequence_2 = { 8b5d0c 42 56 57 894df8 8d43ff 8955f0 }
$sequence_3 = { 8bf0 85f6 0f8494000000 56 e8???????? 83c404 8945cc }
$sequence_4 = { 8b4df8 03cf 833900 75c9 8b4d0c 83c114 894d0c }
$sequence_5 = { ff15???????? 8906 85c0 7440 8d4e1c 897e10 c7461400040000 }
$sequence_6 = { 53 56 8945f8 8b4510 57 8bf9 8945f4 }
$sequence_7 = { 8bec 81ecdc070000 a1???????? 33c5 8945fc 53 56 }
$sequence_8 = { 8d044502000000 50 8b45fc ff75f0 03c6 50 e8???????? }
$sequence_9 = { 85c0 7427 8d4df8 51 8d4e78 e8???????? }
condition:
7 of them and filesize < 753664
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8b0f 8b55f8 8b4708 2bc2 50 8d0411 50 } | |
| $sequence_1 | hex | { 8b36 8b4344 2bc6 85c0 7fbf 5f 5e } | |
| $sequence_2 | hex | { 8b5d0c 42 56 57 894df8 8d43ff 8955f0 } | |
| $sequence_3 | hex | { 8bf0 85f6 0f8494000000 56 e8???????? 83c404 8945cc } | |
| $sequence_4 | hex | { 8b4df8 03cf 833900 75c9 8b4d0c 83c114 894d0c } | |
| $sequence_5 | hex | { ff15???????? 8906 85c0 7440 8d4e1c 897e10 c7461400040000 } | |
| $sequence_6 | hex | { 53 56 8945f8 8b4510 57 8bf9 8945f4 } | |
| $sequence_7 | hex | { 8bec 81ecdc070000 a1???????? 33c5 8945fc 53 56 } | |
| $sequence_8 | hex | { 8d044502000000 50 8b45fc ff75f0 03c6 50 e8???????? } | |
| $sequence_9 | hex | { 85c0 7427 8d4df8 51 8d4e78 e8???????? } |
Condition
7 of them and filesize < 753664In plain words (Heuristic)
- The file must be smaller than 753664 (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: a2bb2d28-922c-5165-af00-8264e9dc198d
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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