YARA · Malpedia signator rules
MALPEDIA_Win_Nighthawk_Auto
autogenerated rule brought to you by yara-signator
Hack toolNighthawkMalpedia 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: Nighthawk.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-nighthawk-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Nighthawk_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "1ea956b0-be8c-5890-911a-c393aa58e8a5"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.nighthawk"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.nighthawk_auto.yar#L1-L134"
= "N/A"
= "4b751c3e5abba245cd70e3ad89ca9e58ef5b2ca9415a570dd8fcbbbd6942fa59"
= 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 = { 740e 83e901 7412 83f901 0f858b000000 f6838000000010 eb07 }
$sequence_1 = { e8???????? 90 48897597 488975a7 4c896daf 41b81d000000 488d15d3020800 }
$sequence_2 = { 7211 488b8d40080000 4885c9 7405 e8???????? 4889b550080000 4889bd58080000 }
$sequence_3 = { 4c89642448 6644897c2430 e8???????? 4c8d442430 488b5320 e8???????? 85c0 }
$sequence_4 = { 4c2bc7 4803d7 488d8c2430010000 e8???????? 90 4c3ba424a0000000 744f }
$sequence_5 = { e8???????? 85c0 0f8517010000 80fb2c 0f840e010000 80fb5d 0f8405010000 }
$sequence_6 = { 90 83ff03 0f85d1040000 8bfb 488b5c2440 488d4c2430 48837c244808 }
$sequence_7 = { c3 e8???????? 90 cc 4883ec28 488b09 4885c9 }
$sequence_8 = { 4c896e20 6644897e08 4883c660 488d4ec8 483bcd 0f856affffff 488b5c2450 }
$sequence_9 = { 743f 0fb7d9 81cb00000780 85c9 0f4ed9 eb2f 488b8de8000000 }
condition:
7 of them and filesize < 1949696
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 740e 83e901 7412 83f901 0f858b000000 f6838000000010 eb07 } | |
| $sequence_1 | hex | { e8???????? 90 48897597 488975a7 4c896daf 41b81d000000 488d15d3020800 } | |
| $sequence_2 | hex | { 7211 488b8d40080000 4885c9 7405 e8???????? 4889b550080000 4889bd58080000 } | |
| $sequence_3 | hex | { 4c89642448 6644897c2430 e8???????? 4c8d442430 488b5320 e8???????? 85c0 } | |
| $sequence_4 | hex | { 4c2bc7 4803d7 488d8c2430010000 e8???????? 90 4c3ba424a0000000 744f } | |
| $sequence_5 | hex | { e8???????? 85c0 0f8517010000 80fb2c 0f840e010000 80fb5d 0f8405010000 } | |
| $sequence_6 | hex | { 90 83ff03 0f85d1040000 8bfb 488b5c2440 488d4c2430 48837c244808 } | |
| $sequence_7 | hex | { c3 e8???????? 90 cc 4883ec28 488b09 4885c9 } | |
| $sequence_8 | hex | { 4c896e20 6644897e08 4883c660 488d4ec8 483bcd 0f856affffff 488b5c2450 } | |
| $sequence_9 | hex | { 743f 0fb7d9 81cb00000780 85c9 0f4ed9 eb2f 488b8de8000000 } |
Condition
7 of them and filesize < 1949696In plain words (Heuristic)
- The file must be smaller than 1949696 (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: 1ea956b0-be8c-5890-911a-c393aa58e8a5
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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