MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 551cbc1698d7e07b9e00c4443098449f0a5ef09e14e7d861b757e853f77fe671. 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: 12

Intelligence 12 IOCs YARA 12 File information Comments

SHA256 hash:	551cbc1698d7e07b9e00c4443098449f0a5ef09e14e7d861b757e853f77fe671
SHA3-384 hash:	94d4f2d1da926c0c9076ee51dc5d7c8385adb822d553c0379c91932c093579394e6e0bbb04500f312dcef09c758bf7c8
SHA1 hash:	c67541171d6385c5913b90b0bd35ea5fd2fc4812
MD5 hash:	ceb7d42ef64c1f4f1b8c19fa868a6111
humanhash:	earth-july-kentucky-fillet
File name:	x86_32.urbotnetisass
Download:	download sample
Signature	Mirai Create hunting rule
File size:	210'572 bytes
First seen:	2025-09-13 14:38:44 UTC
Last seen:	Never
File type:	elf
MIME type:	application/x-executable
ssdeep	3072:6+C60kFvj2RQzDED7TRh9wIKDUw41V84r+nqQhO+wu7pchlzbXRA:6+Cg5aRQze6IM4116OR+pMbXRA
TLSH	T1B2245C43EB43C1F2E9570574116BE7379A369A350032D64AEB94EE31EC76602E70EB6C
telfhash	t138b1c1b62db51ae973e09902c30f2b51ce2ae27b296039fb05f124d132f2e815776c35
TrID	50.1% (.) ELF Executable and Linkable format (Linux) (4022/12) 49.8% (.O) ELF Executable and Linkable format (generic) (4000/1)
Magika	elf
Reporter	abuse_ch
Tags:	elf mirai

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Result

Verdict:

Malware

Maliciousness:

Behaviour

Sets a written file as executable

Kills processes

Mounts file systems

Runs as daemon

Deletes a file

Changes owner for a written file

Changes the time when the file was created, accessed, or modified

Launching a process

Receives data from a server

Opens a port

Changes access rights for a written file

Manages services

Creating a file

Sends data to a server

Connection attempt

Collects information on the network activity

Unmounts file systems

Deleting a recently created file

Deletes a system binary file

Creates or modifies files in /cron to set up autorun

Substitutes an application name

Writes files to system directory

Creates or modifies files in /init.d to set up autorun

Creates or modifies symbolic links in /init.d to set up autorun

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm

Link:

https://www.filescan.io/uploads/68c582230d1238ff0aab5e5a/reports/55f1329a-8fe6-4181-9fe2-b1dc5f863a8a/overview

Verdict:

Malicious

File Type:

elf.32.le

First seen:

2025-09-13T11:31:00Z UTC

Last seen:

2025-09-13T11:31:00Z UTC

Hits:

~10

Detections:

HEUR:Backdoor.Linux.Mirai.gen

Link:

https://opentip.kaspersky.com/551cbc1698d7e07b9e00c4443098449f0a5ef09e14e7d861b757e853f77fe671/results?tab=lookup

Status:

terminated

Link:

https://sandbox.kunai.rocks/analysis/ab76622e-79ab-4e50-b9e3-83c20ab49fbe

Behavior Graph:

Download SVG

Verdict:

Suspicious

Link:

https://analyze.intezer.com/analyses/3f7238bb-69f5-4e21-b029-5d53682d2228

Result

Threat name:

Gafgyt, Mirai

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1777001

Signature

Deletes system log files

Drops files in suspicious directories

Executes the "crontab" command typically for achieving persistence

Malicious sample detected (through community Yara rule)

Modifies the '.bashrc' or '.bash_profile' file typically for persisting actions

Multi AV Scanner detection for submitted file

Sample reads /proc/mounts (often used for finding a writable filesystem)

Sample tries to persist itself using cron

Sample tries to persist itself using System V runlevels

Sample tries to set files in /etc globally writable

Writes identical ELF files to multiple locations

Yara detected Gafgyt

Yara detected Mirai

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

ELF

Link:

https://malprob.io/report/551cbc1698d7e07b9e00c4443098449f0a5ef09e14e7d861b757e853f77fe671

Detection:

mirai

Link:

https://mwdb.cert.pl/sample/551cbc1698d7e07b9e00c4443098449f0a5ef09e14e7d861b757e853f77fe671/

Verdict:

Malicious

Threat:

Backdoor.Linux.Mirai

Link:

https://tip.neiki.dev/file/551cbc1698d7e07b9e00c4443098449f0a5ef09e14e7d861b757e853f77fe671

Threat name:

Linux.Worm.Mirai

Status:

Malicious

First seen:

2025-09-13 14:25:38 UTC

File Type:

ELF32 Little (Exe)

AV detection:

17 of 24 (70.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=kuolyfuy27qhxhqayrcdbgcet4ff54e6ctt5qynxk7ufh5374zyq._file

Result

Malware family:

n/a

Score:

7/10

Tags:

credential_access defense_evasion discovery execution linux persistence privilege_escalation

Link:

https://tria.ge/reports/250913-r1kmdacl6z/

Behaviour

Reads runtime system information

Changes its process name

Reads system network configuration

Modifies Bash startup script

Reads process memory

Creates/modifies Cron job

Creates/modifies environment variables

Deletes log files

Enumerates running processes

Modifies init.d

Modifies rc script

Modifies systemd

Writes file to system bin folder

Deletes system logs

Executes dropped EXE

Modifies Watchdog functionality

Verdict:

Malicious

Tags:

trojan gafgyt mirai Unix.Trojan.Mirai-7755770-0

YARA:

Linux_Trojan_Gafgyt_5bf62ce4 Linux_Trojan_Mirai_5f7b67b8 Linux_Trojan_Mirai_88de437f Linux_Trojan_Mirai_389ee3e9 Linux_Trojan_Mirai_cc93863b

Link:

https://app.threat.zone/submission/b17382ac-5145-44ee-879b-082254367b78

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

Threat name:

Suspicious File

Score:

0.64

Link:

https://yomi.yoroi.company/submissions/551cbc1698d7e07b9e00c4443098449f0a5ef09e14e7d861b757e853f77fe671

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_202503_elf_Mirai Create hunting rule
Author:	abuse.ch
Description:	Detects Mirai 'TSource' ELF files

Rule name:	CP_AllMal_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication

Rule name:	enterpriseapps2 Create hunting rule
Author:	Tim Brown @timb_machine
Description:	Enterprise apps

Rule name:	linux_generic_ipv6_catcher Create hunting rule
Author:	@_lubiedo
Description:	ELF samples using IPv6 addresses

Rule name:	Linux_Trojan_Gafgyt_5bf62ce4 Create hunting rule
Author:	Elastic Security

Rule name:	Linux_Trojan_Mirai_389ee3e9 Create hunting rule
Author:	Elastic Security

Rule name:	Linux_Trojan_Mirai_5f7b67b8 Create hunting rule
Author:	Elastic Security

Rule name:	Linux_Trojan_Mirai_88de437f Create hunting rule
Author:	Elastic Security

Rule name:	Linux_Trojan_Mirai_cc93863b Create hunting rule
Author:	Elastic Security

Rule name:	SHA512_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA384/SHA512 constants

Rule name:	unixredflags3 Create hunting rule
Author:	Tim Brown @timb_machine
Description:	Hunts for UNIX red flags

Rule name:	vmdetect Create hunting rule
Author:	nex
Description:	Possibly employs anti-virtualization techniques

File information

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

Web download

Mirai

elf 551cbc1698d7e07b9e00c4443098449f0a5ef09e14e7d861b757e853f77fe671

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/3618255/

Delivery method

Distributed via web download

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

No comments found for this malware sample