MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c8e4bb12b21dfd1259fc86c104583bf13df0aa9099ac3d50d9bb5d937b65756b. 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

Kaiji

Vendor detections: 8

Intelligence 8 IOCs YARA 18 File information Comments

SHA256 hash:	c8e4bb12b21dfd1259fc86c104583bf13df0aa9099ac3d50d9bb5d937b65756b
SHA3-384 hash:	94e98b42d5711977a7eec628e622f05179d6ca2d3c84f85c46d4b334faa94c29ade0c62156a2158cc845179baa3da412
SHA1 hash:	51d2a95d0a2796977ceb1b979e2a6c73891aa3c8
MD5 hash:	823c13442e3780023fb8213362de446e
humanhash:	sierra-lactose-pip-paris
File name:	linux_arm5
Download:	download sample
Signature	Kaiji Create hunting rule
File size:	2'097'152 bytes
First seen:	2026-10-22 17:07:05 UTC
Last seen:	Never
File type:	elf
MIME type:	application/x-executable
ssdeep	24576:J1rMILphWsdRm6vM7lUVJtq8wfe9OqbVgYQ3k48jtIMoG34rJnWVh1BPnjKqZdtX:JVfjmPMo2T1
TLSH	T1F2A5F857B8918552C4E42637BCBE81C833635EB99B8663666D04FE3C3ABF2D90E35314
gimphash	e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
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	BlinkzSec
Tags:	kaiji

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

No detections

Result

Verdict:

Malware

Maliciousness:

Behaviour

Launching a process

Creates directories in a system directory

Creating a process from a recently created file

Manages services

Receives data from a server

Locks files

Sets a file as executable

Mounts file systems

Creating a file

Runs as daemon

Sends data to a server

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

Collects information on the RAM

Connection attempt

Sets a written file as executable

Creates or modifies files in /cron to set up autorun

Writes files to system subdirectory

Replaces system binary files

Writes files to system directory

Creates or modifies files to set up autorun

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

Gathering data

Verdict:

Malicious

Uses P2P?:

false

Uses anti-vm?:

true

Architecture:

arm

Packer:

not packed

Botnet:

unknown

Number of open files:

212

Number of processes launched:

Processes remaning?

false

Remote TCP ports scanned:

not identified

Full report:

https://elfdigest.com/brief/c8e4bb12b21dfd1259fc86c104583bf13df0aa9099ac3d50d9bb5d937b65756b

Behaviour

Anti-VM

Persistence

Information Gathering

Botnet C2s

TCP botnet C2(s):

type:Kaiji 94.154.43.148:25195

UDP botnet C2(s):

not identified

Verdict:

Malicious

File Type:

elf.32.le

First seen:

2026-10-22T16:43:00Z UTC

Last seen:

2026-10-23T18:23:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/c8e4bb12b21dfd1259fc86c104583bf13df0aa9099ac3d50d9bb5d937b65756b/results?tab=lookup

Status:

terminated

Link:

https://sandbox.kunai.rocks/analysis/8dd2ff83-b959-40b1-b5ae-c00840b0594a

Behavior Graph:

Download SVG

Verdict:

Unknown

Link:

https://analyze.intezer.com/analyses/7f8f9091-5c69-4ce2-989c-e3495419e7dd

Score:

100%

Verdict:

Malware

File Type:

ELF

Link:

https://malprob.io/report/c8e4bb12b21dfd1259fc86c104583bf13df0aa9099ac3d50d9bb5d937b65756b

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c8e4bb12b21dfd1259fc86c104583bf13df0aa9099ac3d50d9bb5d937b65756b/

Threat name:

Linux.Trojan.Kaiji

Status:

Malicious

First seen:

2026-10-22 17:06:27 UTC

File Type:

ELF32 Little (Exe)

AV detection:

18 of 24 (75.00%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=zdslwevsdx6rewp4q3aqiwb36e67bkuqtgwd2ugzxnozg63fovvq._file

Result

Malware family:

kaiji

Score:

10/10

Tags:

family:kaiji botnet defense_evasion discovery execution persistence privilege_escalation ransomware

Link:

https://tria.ge/reports/261022-vm7frsag88/

Behaviour

Command and Scripting Interpreter: Unix Shell

Enumerates kernel/hardware configuration

Reads runtime system information

Modifies Bash startup script

Creates/modifies Cron job

Creates/modifies environment variables

Disables SELinux

Enumerates running processes

Modifies init.d

Modifies systemd

Write file to user bin folder

Executes dropped EXE

Modifies Watchdog functionality

Renames multiple (1004) files with added filename extension

Malware Config

C2 Extraction:

zz.woshisaob.club:25195

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

Threat name:

Legit

Score:

0.00

Link:

https://yomi.yoroi.company/submissions/c8e4bb12b21dfd1259fc86c104583bf13df0aa9099ac3d50d9bb5d937b65756b

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:	CP_Script_Inject_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	Detects attempts to inject code into another process across PE, ELF, Mach-O binaries

Rule name:	DetectGoMethodSignatures Create hunting rule
Author:	Wyatt Tauber
Description:	Detects Go method signatures in unpacked Go binaries

Rule name:	Detect_Go_GOMAXPROCS Create hunting rule
Author:	Obscurity Labs LLC
Description:	Detects Go binaries by the presence of runtime.GOMAXPROCS in the runtime metadata

Rule name:	enterpriseunix2 Create hunting rule
Author:	Tim Brown @timb_machine
Description:	Enterprise UNIX

Rule name:	F01_s1ckrule Create hunting rule
Author:	s1ckb017

Rule name:	GoBinTest Create hunting rule

Rule name:	golang Create hunting rule

Rule name:	golang_binary_string Create hunting rule
Description:	Golang strings present

Rule name:	Golang_Find_CSC846 Create hunting rule
Author:	Ashar Siddiqui
Description:	Find Go Signatuers

Rule name:	Golang_Find_CSC846_Simple Create hunting rule
Author:	Ashar Siddiqui
Description:	Find Go Signatuers

Rule name:	identity_golang Create hunting rule
Author:	Eric Yocam
Description:	find Golang malware

Rule name:	Linux_Generic_Threat_a40aaa96 Create hunting rule
Author:	Elastic Security

Rule name:	ProgramLanguage_Golang Create hunting rule
Author:	albertzsigovits
Description:	Application written in Golang programming language

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	setsockopt Create hunting rule
Author:	Tim Brown @timb_machine
Description:	Hunts for setsockopt() red flags

Rule name:	Suspicious_Golang_Binary Create hunting rule
Author:	Tim Machac
Description:	Triage: Golang-compiled binary with suspicious OS/persistence/network strings (not family-specific)

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.

Web download

Kaiji

elf c8e4bb12b21dfd1259fc86c104583bf13df0aa9099ac3d50d9bb5d937b65756b

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/3955781/

Delivery method

Distributed via web download

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