MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cf5919a13185ac0bbf3c5890fad0ca5c0e79841bda8c5de99b867f749237ee13. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry

Mirai

Vendor detections: 9

Intelligence 9 IOCs YARA 3 File information Comments

SHA256 hash:	cf5919a13185ac0bbf3c5890fad0ca5c0e79841bda8c5de99b867f749237ee13
SHA3-384 hash:	fb55e6e679e66c9fd93b623f736c26a0c38cddbde8165b50e1f676f03cf9835e38569b1ab62b227bd01d405da8ae3aa6
SHA1 hash:	a7591138236ee82018b0eabde347b3a1375d0953
MD5 hash:	44042ff732909fb5203385528b3e1348
humanhash:	eleven-winter-artist-foxtrot
File name:	nz.sh
Download:	download sample
Signature	Mirai Create hunting rule
File size:	2'789 bytes
First seen:	2026-07-19 10:17:21 UTC
Last seen:	2026-07-19 14:06:22 UTC
File type:	sh
MIME type:	text/x-shellscript
ssdeep	48:isQbsFCEsGP3sRRsHVsPdscTTcTGFlsILsnxLsWZJsRJrs3ds+jTscpVsriF:ib6dKsop8az/OLnaOhhfF
TLSH	T1E351D6D610824B35AE5A9D72BBBB890E34C1C09A75DBEFD79BD8B8B4848CD147C60743
TrID	70.0% (.SH) Linux/UNIX shell script (7000/1) 30.0% (.) Unix-like shebang (var.3) (gen) (3000/1)
Magika	shell
Reporter	abuse_ch
Tags:	mirai sh

Shell script dropper

This file seems to be a shell script dropper, using wget, ftpget and/or curl. More information about the corresponding payload URLs are shown below.

URL	Malware sample (SHA256 hash)	Signature	Tags
http://157.173.119.111/nz/nz.x86	n/a	n/a	mirai
http://157.173.119.111/nz/nz.mips	n/a	n/a	mirai
http://157.173.119.111/nz/nz.arc	n/a	n/a	mirai
http://157.173.119.111/nz/nz.i468	n/a	n/a	mirai
http://157.173.119.111/nz/nz.i686	n/a	n/a	mirai
http://157.173.119.111/nz/nz.x86_64	n/a	n/a	mirai
http://157.173.119.111/nz/nz.mpsl	n/a	n/a	mirai
http://157.173.119.111/nz/nz.arm	n/a	n/a	mirai
http://157.173.119.111/nz/nz.arm5	n/a	n/a	mirai
http://157.173.119.111/nz/nz.arm6	n/a	n/a	mirai
http://157.173.119.111/nz/nz.arm7	n/a	n/a	mirai
http://157.173.119.111/nz/nz.ppc	n/a	n/a	mirai
http://157.173.119.111/nz/nz.spc	n/a	n/a	mirai
http://157.173.119.111/nz/nz.m68k	n/a	n/a	mirai
http://157.173.119.111/nz/nz.sh4	n/a	n/a	mirai

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

No detections

Detection(s):

Sanesecurity.Malware.30790.LX.BOT.UNOFFICIAL

SecuriteInfo.com.Linux.Downloader-29.UNOFFICIAL

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

busybox downloader evasive mirai obfuscated

Link:

https://www.filescan.io/uploads/6a5ca473625a0236a7f2d52a/reports/193bdc2c-e475-4ca7-9dc6-ee9c92ab7015/overview

Verdict:

Malicious

File Type:

unix shell

First seen:

2026-07-19T07:32:00Z UTC

Last seen:

2026-07-21T01:23:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/cf5919a13185ac0bbf3c5890fad0ca5c0e79841bda8c5de99b867f749237ee13/results?tab=lookup

Status:

terminated

Link:

https://sandbox.kunai.rocks/analysis/247ef6f7-cc84-4db0-8ccc-e477ac173dc5

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/cf5919a13185ac0bbf3c5890fad0ca5c0e79841bda8c5de99b867f749237ee13

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/cf5919a13185ac0bbf3c5890fad0ca5c0e79841bda8c5de99b867f749237ee13/

Threat name:

Linux.Downloader.Medusa

Status:

Malicious

First seen:

2026-07-19 10:18:34 UTC

File Type:

Text (Shell)

AV detection:

16 of 24 (66.67%)

Threat level:

3/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=z5mrtijrqwwaxpz4lcipvugklqhhtba33kgf32m3qz7xjerx5yjq._file

Result

Malware family:

mirai

Score:

10/10

Tags:

family:mirai antivm botnet defense_evasion discovery linux

Link:

https://tria.ge/reports/260719-mb5h2ag15p/

Behaviour

Reads runtime system information

System Network Configuration Discovery

Writes file to tmp directory

Checks CPU configuration

Enumerates running processes

Writes file to system bin folder

File and Directory Permissions Modification

Modifies Watchdog functionality

Family: Mirai

Malware Config

C2 Extraction:

codeinspector.ddns.net

Malware family:

Mirai

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/cf5919a13185/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/cf5919a13185ac0bbf3c5890fad0ca5c0e79841bda8c5de99b867f749237ee13

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:	ach_202412_suspect_bash_script Create hunting rule
Author:	abuse.ch
Description:	Detects suspicious Linux bash scripts

Rule name:	Linux_Shellscript_Downloader Create hunting rule
Author:	albertzsigovits
Description:	Generic Approach to Shellscript downloaders

Rule name:	MAL_Linux_IoT_MultiArch_BotnetLoader_Generic Create hunting rule
Author:	Anish Bogati
Description:	Technique-based detection of IoT/Linux botnet loader shell scripts downloading binaries from numeric IPs, chmodding, and executing multi-architecture payloads
Reference:	MalwareBazaar sample lilin.sh

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Mirai

sh cf5919a13185ac0bbf3c5890fad0ca5c0e79841bda8c5de99b867f749237ee13

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/3888605/

Delivery method

Distributed via web download

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