YARA · Malpedia signator rules
MALPEDIA_Win_Nikihttp_Auto
autogenerated rule brought to you by yara-signator
MalwareNikihttpMalpedia 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: Nikihttp.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-nikihttp-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Nikihttp_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "efb93d62-2d55-5928-82c0-465797a9ac82"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.nikihttp"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.nikihttp_auto.yar#L1-L134"
= "N/A"
= "b0bfb904b49f84c19d386d2f363ca9288bcaadac73c512fcbf2bf48b763ea69c"
= 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 = { ba9ff636ca e9???????? c78424900000006f000000 898424c0000000 8b842490000000 038424c0000000 888424d1000000 }
$sequence_1 = { 8b6c2440 40886906 c744245067000000 bdde57ec52 0f1f8000000000 81fdde57ec52 740a }
$sequence_2 = { eb07 b90e73818d ebe7 c785c000000069000000 c785e800000033000000 b94880ffaa 662e0f1f840000000000 }
$sequence_3 = { 8b05???????? 8d50ff 0fafd0 f6c201 bae2cac19b 410f44d1 833d????????0a }
$sequence_4 = { b97ce72407 662e0f1f840000000000 6690 81f921011b60 0f8488feffff 81f97ce72407 75ec }
$sequence_5 = { baeefaca92 eba1 88842448010000 8a842448010000 046f 88842492010000 488d842493010000 }
$sequence_6 = { e8???????? 884604 4889d9 b253 e8???????? 884605 4889d9 }
$sequence_7 = { bab24ff80a ebb3 c7859800000069000000 888588000000 8a8588000000 8b8d98000000 00c1 }
$sequence_8 = { bb5c2fdba5 b8d00d104b 41b8787aaae5 bae5e72c6e 0f1f4000 81fb777aaae5 7e28 }
$sequence_9 = { e9???????? 888424d0000000 8a8424d0000000 884706 488d5908 bae09a3ca6 0f1f4000 }
condition:
7 of them and filesize < 2543616
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { ba9ff636ca e9???????? c78424900000006f000000 898424c0000000 8b842490000000 038424c0000000 888424d1000000 } | |
| $sequence_1 | hex | { 8b6c2440 40886906 c744245067000000 bdde57ec52 0f1f8000000000 81fdde57ec52 740a } | |
| $sequence_2 | hex | { eb07 b90e73818d ebe7 c785c000000069000000 c785e800000033000000 b94880ffaa 662e0f1f840000000000 } | |
| $sequence_3 | hex | { 8b05???????? 8d50ff 0fafd0 f6c201 bae2cac19b 410f44d1 833d????????0a } | |
| $sequence_4 | hex | { b97ce72407 662e0f1f840000000000 6690 81f921011b60 0f8488feffff 81f97ce72407 75ec } | |
| $sequence_5 | hex | { baeefaca92 eba1 88842448010000 8a842448010000 046f 88842492010000 488d842493010000 } | |
| $sequence_6 | hex | { e8???????? 884604 4889d9 b253 e8???????? 884605 4889d9 } | |
| $sequence_7 | hex | { bab24ff80a ebb3 c7859800000069000000 888588000000 8a8588000000 8b8d98000000 00c1 } | |
| $sequence_8 | hex | { bb5c2fdba5 b8d00d104b 41b8787aaae5 bae5e72c6e 0f1f4000 81fb777aaae5 7e28 } | |
| $sequence_9 | hex | { e9???????? 888424d0000000 8a8424d0000000 884706 488d5908 bae09a3ca6 0f1f4000 } |
Condition
7 of them and filesize < 2543616In plain words (Heuristic)
- The file must be smaller than 2543616 (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: efb93d62-2d55-5928-82c0-465797a9ac82
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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