YARA · Malpedia signator rules
MALPEDIA_Win_Htprat_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
Associated malware family: Htprat.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-htprat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Htprat_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "2a40ad4e-1514-53dd-8180-69420f7bc60e"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.htprat"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.htprat_auto.yar#L1-L126"
= "N/A"
= "9b31ea685effc72070edec20cdbb0f150b670c182033265ef40f9b7f10fd4d1d"
= 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 = { 50 e8???????? ffb568efffff e8???????? 59 }
$sequence_1 = { a3???????? 53 8d854cdcffff 50 8bce e8???????? c78540dcffff01000000 }
$sequence_2 = { 8b4d08 83c10c 8bc3 e8???????? 84c0 7445 }
$sequence_3 = { c745cc73747576 c745d07778797a c745d441424344 c745d845464748 c745dc494a4b4c c745e04d4e4f50 c745e451525354 }
$sequence_4 = { c6400401 eb3c 8d45f8 e8???????? 8b4df8 83c10c 8bc3 }
$sequence_5 = { 7705 83c2d0 eb1c 83fa41 720a 83fa46 7705 }
$sequence_6 = { 8b01 8945d0 3bc1 744e }
$sequence_7 = { a1???????? 33c4 50 8d8424e0000000 64a300000000 33db c744245c0f000000 }
$sequence_8 = { 6a16 ffb574efffff 89bd6cefffff ffd6 3bc7 750b }
$sequence_9 = { 50 e8???????? 83c40c 8d85e8fdffff 6a0c 898524efffff }
condition:
7 of them and filesize < 278528
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 50 e8???????? ffb568efffff e8???????? 59 } | |
| $sequence_1 | hex | { a3???????? 53 8d854cdcffff 50 8bce e8???????? c78540dcffff01000000 } | |
| $sequence_2 | hex | { 8b4d08 83c10c 8bc3 e8???????? 84c0 7445 } | |
| $sequence_3 | hex | { c745cc73747576 c745d07778797a c745d441424344 c745d845464748 c745dc494a4b4c c745e04d4e4f50 c745e451525354 } | |
| $sequence_4 | hex | { c6400401 eb3c 8d45f8 e8???????? 8b4df8 83c10c 8bc3 } | |
| $sequence_5 | hex | { 7705 83c2d0 eb1c 83fa41 720a 83fa46 7705 } | |
| $sequence_6 | hex | { 8b01 8945d0 3bc1 744e } | |
| $sequence_7 | hex | { a1???????? 33c4 50 8d8424e0000000 64a300000000 33db c744245c0f000000 } | |
| $sequence_8 | hex | { 6a16 ffb574efffff 89bd6cefffff ffd6 3bc7 750b } | |
| $sequence_9 | hex | { 50 e8???????? 83c40c 8d85e8fdffff 6a0c 898524efffff } |
Condition
7 of them and filesize < 278528In plain words (Heuristic)
- The file must be smaller than 278528 (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: 2a40ad4e-1514-53dd-8180-69420f7bc60e
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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