YARA · Malpedia signator rules
MALPEDIA_Win_Atharvan_Auto
autogenerated rule brought to you by yara-signator
MalwareAtharvanMalpedia 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: Atharvan.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-atharvan-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Atharvan_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "dd431719-94ae-5231-a751-29bdaf0704ba"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.atharvan"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.atharvan_auto.yar#L1-L122"
= "N/A"
= "19e37c8e9adb39c411ba39c49044a47b42d2c1f02c40c66504cd4acf945815d9"
= 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 = { f6d1 80c103 8848ff 4883ea01 75eb 448b8504010000 488bd5 }
$sequence_1 = { 4885c0 7441 48c7c1ffffffff 0f1f4000 48ffc1 803c0800 }
$sequence_2 = { 895128 488d0d9fc10000 488b45d8 488908 488d0d915b0100 488b45d8 }
$sequence_3 = { 0fb601 84c0 75f1 488d4c2468 b0c2 }
$sequence_4 = { 48c1f806 4c8d0504f50000 83e23f 488d14d2 498b04c0 f644d03801 7424 }
$sequence_5 = { ff15???????? 85c0 0f842f010000 b901001000 }
$sequence_6 = { 488b08 488d05b8330100 483901 7408 488b09 e8???????? 488b03 }
$sequence_7 = { ff15???????? 488bd8 4883f8ff 742b 448d460e 488bc8 }
$sequence_8 = { 4533d2 498bd2 4885ff 7e1f 4c8d05179dfeff 4b8b8ce070550200 }
$sequence_9 = { 458be0 c7442469cf968ed8 4c8bea c744246d8dc8c4cf }
condition:
7 of them and filesize < 348160
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { f6d1 80c103 8848ff 4883ea01 75eb 448b8504010000 488bd5 } | |
| $sequence_1 | hex | { 4885c0 7441 48c7c1ffffffff 0f1f4000 48ffc1 803c0800 } | |
| $sequence_2 | hex | { 895128 488d0d9fc10000 488b45d8 488908 488d0d915b0100 488b45d8 } | |
| $sequence_3 | hex | { 0fb601 84c0 75f1 488d4c2468 b0c2 } | |
| $sequence_4 | hex | { 48c1f806 4c8d0504f50000 83e23f 488d14d2 498b04c0 f644d03801 7424 } | |
| $sequence_5 | hex | { ff15???????? 85c0 0f842f010000 b901001000 } | |
| $sequence_6 | hex | { 488b08 488d05b8330100 483901 7408 488b09 e8???????? 488b03 } | |
| $sequence_7 | hex | { ff15???????? 488bd8 4883f8ff 742b 448d460e 488bc8 } | |
| $sequence_8 | hex | { 4533d2 498bd2 4885ff 7e1f 4c8d05179dfeff 4b8b8ce070550200 } | |
| $sequence_9 | hex | { 458be0 c7442469cf968ed8 4c8bea c744246d8dc8c4cf } |
Condition
7 of them and filesize < 348160In plain words (Heuristic)
- The file must be smaller than 348160 (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: dd431719-94ae-5231-a751-29bdaf0704ba
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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