MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31eb9db333129f588baf5c1d5e7e7da119db0d1ff502da95408ef8d5a7e19f97. 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

Gafgyt

Vendor detections: 8

Intelligence 8 IOCs YARA 21 File information Comments

SHA256 hash:	31eb9db333129f588baf5c1d5e7e7da119db0d1ff502da95408ef8d5a7e19f97
SHA3-384 hash:	6797a1eca8c19f9bb1a2ca11aa60511e55d57b847887356e8bbeeff084cd20b55c238a5974b72a13a44ad19cc8ac6a85
SHA1 hash:	4947ceff0b01f73b0d9fcca50193647388c3f040
MD5 hash:	b98a9bd31e585cd25b5534c1bcc40773
humanhash:	batman-network-item-pasta
File name:	kworker.bin
Download:	download sample
Signature	Gafgyt Create hunting rule
File size:	387'976 bytes
First seen:	2026-10-22 06:57:35 UTC
Last seen:	2026-10-22 06:58:26 UTC
File type:	elf
MIME type:	application/x-executable
ssdeep	6144:VbyXt/dlox5BrzDXUqqbARwa9vxqjzeIbg+B9wvjdq1rbRY:VerloxzzYcRwa9i8Ldq1rbRY
TLSH	T13D848D03BA8299FFC4C7D1B44BEF923B6D21B84E0935760A67A47E912F26FD02719741
telfhash	t143c10f3028a5345471c392523343caee99320c58c7e9b6e52e97bcbdddeb5c40db1863
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	Noche
Tags:	gafgyt

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

No detections

Detection(s):

Unix.Dropper.Mirai-7540662-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a process from a recently created file

Creating a file

DNS request

Changes access rights for a file

Opens a port

Runs as daemon

Sets a written file as executable

Creates or modifies symbolic links

Connection attempt

Creates or modifies files in /cron to set up autorun

Substitutes an application name

Deletes a system binary file

Traces processes

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

Creates or modifies files to set up autorun

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

bashlite botnet dropper gcc masquerade mirai

Link:

https://www.filescan.io/uploads/6ad9bc3a7c7fdd992eab6ffb/reports/625c3700-9d19-4ff0-bc76-d906bb33c2da/overview

Verdict:

Malicious

Uses P2P?:

false

Uses anti-vm?:

true

Architecture:

x86

Packer:

not packed

Botnet:

unknown

Number of open files:

148

Number of processes launched:

Processes remaning?

true

Remote TCP ports scanned:

not identified

Full report:

https://elfdigest.com/brief/31eb9db333129f588baf5c1d5e7e7da119db0d1ff502da95408ef8d5a7e19f97

Behaviour

Anti-VM

Persistence

Process Renaming

Anti-Debugging

Information Gathering

Botnet C2s

TCP botnet C2(s):

not identified

UDP botnet C2(s):

not identified

Verdict:

Malicious

File Type:

elf.64.le

First seen:

2026-10-18T17:44:00Z UTC

Last seen:

2026-10-19T14:12:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/31eb9db333129f588baf5c1d5e7e7da119db0d1ff502da95408ef8d5a7e19f97/results?tab=lookup

Status:

terminated

Link:

https://sandbox.kunai.rocks/analysis/3f76d0fa-8ed2-42d9-8ed9-3e870cfb5e98

Behavior Graph:

Download SVG

Verdict:

Unknown

Link:

https://analyze.intezer.com/analyses/8d335c0c-3cb9-4571-bf1d-fbd521f1f6b8

Score:

100%

Verdict:

Malware

File Type:

ELF

Link:

https://malprob.io/report/31eb9db333129f588baf5c1d5e7e7da119db0d1ff502da95408ef8d5a7e19f97

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/31eb9db333129f588baf5c1d5e7e7da119db0d1ff502da95408ef8d5a7e19f97/

Threat name:

Linux.Backdoor.Gafgyt

Status:

Malicious

First seen:

2026-10-18 22:45:28 UTC

File Type:

ELF64 Little (Exe)

AV detection:

17 of 24 (70.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ghvz3mztckpvrc5plqov47t5uem5wdi76ubnvfkar34nlj7bt6lq._file

Result

Malware family:

n/a

Score:

7/10

Tags:

defense_evasion discovery execution linux persistence privilege_escalation

Link:

https://tria.ge/reports/261022-jcjfeaay3x/

Behaviour

Enumerates kernel/hardware configuration

Reads runtime system information

Changes its process name

Reads system network configuration

Modifies Bash startup script

Creates/modifies Cron job

Creates/modifies environment variables

Enumerates active TCP sockets

Enumerates running processes

Modifies init.d

Modifies systemd

Reads MAC address of network interface

Write file to user bin folder

Executes dropped EXE

Traces itself

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/31eb9db33312/report/overview.html

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

Threat name:

Legit

Score:

0.26

Link:

https://yomi.yoroi.company/submissions/31eb9db333129f588baf5c1d5e7e7da119db0d1ff502da95408ef8d5a7e19f97

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:	ELF_IoT_Persistence_Hunt Create hunting rule
Author:	4r4
Description:	Hunts for ELF files with persistence and download capabilities

Rule name:	ELF_Packer_Dropper_Fileless_Armhf Create hunting rule
Author:	Serhii Kocherhan
Description:	Detects obfuscated Linux ELF packers/droppers featuring ChaCha20/RC4 decryption, memfd_create/execveat fileless execution capabilities, and unique binary artifacts.

Rule name:	ELF_Toriilike_persist Create hunting rule
Author:	4r4
Description:	Detects Torii IoT Botnet (stealthier Mirai alternative)
Reference:	Identified via researched data

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

Rule name:	exploit_any_poppopret Create hunting rule
Author:	Jeff White [karttoon@gmail.com] @noottrak
Description:	Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.

Rule name:	Linux_Trojan_Gafgyt_0cd591cd Create hunting rule
Author:	Elastic Security

Rule name:	Linux_Trojan_Gafgyt_33b4111a Create hunting rule
Author:	Elastic Security

Rule name:	Linux_Trojan_Gafgyt_620087b9 Create hunting rule
Author:	Elastic Security

Rule name:	Linux_Trojan_Gafgyt_807911a2 Create hunting rule
Author:	Elastic Security

Rule name:	Linux_Trojan_Gafgyt_9e9530a7 Create hunting rule
Author:	Elastic Security

Rule name:	Linux_Trojan_Gafgyt_a33a8363 Create hunting rule
Author:	Elastic Security

Rule name:	Linux_Trojan_Gafgyt_d0c57a2e Create hunting rule
Author:	Elastic Security

Rule name:	Linux_Trojan_Gafgyt_d4227dbf Create hunting rule
Author:	Elastic Security

Rule name:	Linux_Trojan_Gafgyt_d996d335 Create hunting rule
Author:	Elastic Security

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	SHA1_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA1 constants

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

Rule name:	TH_Generic_MassHunt_Linux_Malware_2026_CYFARE Create hunting rule
Author:	CYFARE
Description:	Generic Linux malware mass-hunt rule - 2026
Reference:	https://cyfare.net/

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

File information

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

No further information available

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