YARA · Malpedia signator rules
MALPEDIA_Win_Narilam_Auto
autogenerated rule brought to you by yara-signator
MalwareNarilamMalpedia 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: Narilam.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-narilam-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Narilam_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "af0e4e1f-e94b-5739-b250-feb476e56fd8"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.narilam"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.narilam_auto.yar#L1-L134"
= "N/A"
= "da37473068a43dcf4df78c2e458b0e88b0f6e24efee8edcae0e2f184bead1d80"
= 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 = { e8???????? e8???????? 85c0 0f8e90000000 8bc3 e8???????? e8???????? }
$sequence_1 = { e8???????? 50 8bc3 8b10 ff527c 8bd0 4a }
$sequence_2 = { 8d7818 8d75e0 a5 a5 a5 a5 eb15 }
$sequence_3 = { ff8de8feffff 8d45c0 ba02000000 e8???????? 66c785dcfeffff9800 ba???????? 8d45bc }
$sequence_4 = { ffb50cfeffff e8???????? 59 8985f4fdffff 8b4d08 83b96003000006 0f85ff010000 }
$sequence_5 = { e8???????? eb13 8bce b201 a1???????? e8???????? e8???????? }
$sequence_6 = { 8bf2 8bd8 8bd6 8bc3 8b08 ff91d0010000 8bd6 }
$sequence_7 = { 8d8540ffffff ba02000000 e8???????? 66c785dcfeffff1802 ba???????? 8d853cffffff e8???????? }
$sequence_8 = { 8bd0 ff85e8feffff 8b4510 e8???????? 8d55f8 52 ba???????? }
$sequence_9 = { 8d8568ffffff e8???????? 8bc8 ff852cfeffff 8b95f4fdffff 8b949570e3f9ff 8b85fcfdffff }
condition:
7 of them and filesize < 3325952
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { e8???????? e8???????? 85c0 0f8e90000000 8bc3 e8???????? e8???????? } | |
| $sequence_1 | hex | { e8???????? 50 8bc3 8b10 ff527c 8bd0 4a } | |
| $sequence_2 | hex | { 8d7818 8d75e0 a5 a5 a5 a5 eb15 } | |
| $sequence_3 | hex | { ff8de8feffff 8d45c0 ba02000000 e8???????? 66c785dcfeffff9800 ba???????? 8d45bc } | |
| $sequence_4 | hex | { ffb50cfeffff e8???????? 59 8985f4fdffff 8b4d08 83b96003000006 0f85ff010000 } | |
| $sequence_5 | hex | { e8???????? eb13 8bce b201 a1???????? e8???????? e8???????? } | |
| $sequence_6 | hex | { 8bf2 8bd8 8bd6 8bc3 8b08 ff91d0010000 8bd6 } | |
| $sequence_7 | hex | { 8d8540ffffff ba02000000 e8???????? 66c785dcfeffff1802 ba???????? 8d853cffffff e8???????? } | |
| $sequence_8 | hex | { 8bd0 ff85e8feffff 8b4510 e8???????? 8d55f8 52 ba???????? } | |
| $sequence_9 | hex | { 8d8568ffffff e8???????? 8bc8 ff852cfeffff 8b95f4fdffff 8b949570e3f9ff 8b85fcfdffff } |
Condition
7 of them and filesize < 3325952In plain words (Heuristic)
- The file must be smaller than 3325952 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: af0e4e1f-e94b-5739-b250-feb476e56fd8
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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