YARA · Malpedia signator rules
MALPEDIA_Win_Nikitear_Auto
autogenerated rule brought to you by yara-signator
MalwareNikitearMalpedia 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: Nikitear.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-nikitear-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Nikitear_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "b9049d27-0fc1-583b-81a9-833de2d7522b"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.nikitear"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.nikitear_auto.yar#L1-L126"
= "N/A"
= "5827e9be2a08fd3d9f8ef691b6f311ed8991c684e910e34bdb5878684a36debd"
= 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 = { 448bd9 48bbb301000000010000 0f1f4000 660f1f840000000000 410fbe0a 8bd1 80e941 }
$sequence_1 = { 488d1567250200 b903000000 4c8d0553250200 e8???????? 488bd3 8bcf }
$sequence_2 = { 4833d8 490fafde 4983e901 75d9 488bcb e8???????? 488d55b0 }
$sequence_3 = { 4883ec60 488b05???????? 4833c4 488945f8 33db 48895dd0 4c8d05da5e0300 }
$sequence_4 = { 30440db9 48ffc1 4883f910 72ed 0fb645b9 }
$sequence_5 = { f6c304 7424 410fb60a 83e10f 4a0fbe843108460300 428a8c3118460300 }
$sequence_6 = { 40383c0b 75f7 33d2 48f7f1 0fb6041a }
$sequence_7 = { 488bc8 ff15???????? 4889842498000000 4885c0 0f8448070000 c744245654000000 c744245050004f00 }
$sequence_8 = { e8???????? 483bd8 7509 488d3dbce90100 eb16 b902000000 }
$sequence_9 = { 0f1f840000000000 8d040a 30440dc1 48ffc1 4883f90b 7306 }
condition:
7 of them and filesize < 610304
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 448bd9 48bbb301000000010000 0f1f4000 660f1f840000000000 410fbe0a 8bd1 80e941 } | |
| $sequence_1 | hex | { 488d1567250200 b903000000 4c8d0553250200 e8???????? 488bd3 8bcf } | |
| $sequence_2 | hex | { 4833d8 490fafde 4983e901 75d9 488bcb e8???????? 488d55b0 } | |
| $sequence_3 | hex | { 4883ec60 488b05???????? 4833c4 488945f8 33db 48895dd0 4c8d05da5e0300 } | |
| $sequence_4 | hex | { 30440db9 48ffc1 4883f910 72ed 0fb645b9 } | |
| $sequence_5 | hex | { f6c304 7424 410fb60a 83e10f 4a0fbe843108460300 428a8c3118460300 } | |
| $sequence_6 | hex | { 40383c0b 75f7 33d2 48f7f1 0fb6041a } | |
| $sequence_7 | hex | { 488bc8 ff15???????? 4889842498000000 4885c0 0f8448070000 c744245654000000 c744245050004f00 } | |
| $sequence_8 | hex | { e8???????? 483bd8 7509 488d3dbce90100 eb16 b902000000 } | |
| $sequence_9 | hex | { 0f1f840000000000 8d040a 30440dc1 48ffc1 4883f90b 7306 } |
Condition
7 of them and filesize < 610304In plain words (Heuristic)
- The file must be smaller than 610304 (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: b9049d27-0fc1-583b-81a9-833de2d7522b
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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