MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fcdbd042bf46dd262812f3ceb6d2b8bbec48535c170c88619623c351d70444ac. 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: 9

Intelligence 9 IOCs YARA 24 File information Comments

SHA256 hash:	fcdbd042bf46dd262812f3ceb6d2b8bbec48535c170c88619623c351d70444ac
SHA3-384 hash:	8514d75755b82db7c27216951c981d0443e56ad373771cfd29d4fe6f450ff18e9bc3a7c34f05535b4cf2cda604f27c26
SHA1 hash:	e8d227f5c66081065e7cfede6326a8d23bc7159e
MD5 hash:	0a9c826a1d0f079f37973a6fb15cf79b
humanhash:	quiet-hydrogen-happy-burger
File name:	linux_386
Download:	download sample
Signature	Kaiji Create hunting rule
File size:	5'251'072 bytes
First seen:	2026-02-01 20:23:22 UTC
Last seen:	2026-02-02 15:27:54 UTC
File type:	elf
MIME type:	application/x-executable
ssdeep	49152:E33d0lGt6UHcFL7Rn2o03wiEhiDmzzd/9sARlBs/00Cpfx9a9uN3p9hW16klbU6V:E33GlbU8FwmzzRDZ9mEqRV
TLSH	T1D3364A10FECB54F6D5031D3044ABE2AF67316D064B25EB83EA047F6AF97B6A51D32209
telfhash	t1b9c2ce73199da8fc67f0851387ab7120cfe6e03726d0297159f6b8c0e673d53a626878
gimphash	d32a616709154d99f5f34672a5e693bcff5dc106b2584b8d6f593ff16d689453
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 kaiji

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Gathering data

Detection(s):

Sanesecurity.Malware.30444.LC.UNOFFICIAL

Unix.Trojan.Kaiji-9975495-0

Unix.Malware.Kaiji-10002376-0

Unix.Malware.Kaiji-10003612-0

Unix.Malware.Kaiji-10003670-0

Unix.Malware.Kaiji-10025522-0

Unix.Malware.Kaiji-10028086-0

Unix.Malware.Kaiji-10028719-0

Verdict:

Unknown

Threat level:

2.5/10

Confidence:

100%

Tags:

base64 crypto golang

Link:

https://www.filescan.io/uploads/697fb696930564ff3c822299/reports/ba9ffa6c-b5c5-4ee6-87d1-e01fb303e614/overview

Verdict:

Malicious

File Type:

elf.32.le

First seen:

2026-02-01T17:35:00Z UTC

Last seen:

2026-02-01T19:36:00Z UTC

Hits:

~10

Detections:

HEUR:Trojan.Linux.Chaos.mj

Link:

https://opentip.kaspersky.com/fcdbd042bf46dd262812f3ceb6d2b8bbec48535c170c88619623c351d70444ac/results?tab=lookup

Status:

terminated

Link:

https://sandbox.kunai.rocks/analysis/758434ef-8046-435a-8cbe-26dbc7740eb6

Behavior Graph:

Download SVG

Malware family:

Kaiji

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/03b896af-a257-408a-80cc-bf6b44ec338b

Score:

100%

Verdict:

Malware

File Type:

ELF

Link:

https://malprob.io/report/fcdbd042bf46dd262812f3ceb6d2b8bbec48535c170c88619623c351d70444ac

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/fcdbd042bf46dd262812f3ceb6d2b8bbec48535c170c88619623c351d70444ac/

Verdict:

Malicious

Threat:

Family.KAIJI

Link:

https://tip.neiki.dev/file/fcdbd042bf46dd262812f3ceb6d2b8bbec48535c170c88619623c351d70444ac

Threat name:

Linux.Trojan.Multiverze

Status:

Malicious

First seen:

2026-02-01 20:24:41 UTC

File Type:

ELF32 Little (Exe)

AV detection:

25 of 38 (65.79%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=7tn5aqv7i3osmkas6phlnuvyxpwequ24c4giqymwepbvdvyeiswa._file

Result

Malware family:

kaiji

Score:

10/10

Tags:

family:kaiji defense_evasion discovery execution linux persistence privilege_escalation

Link:

https://tria.ge/reports/260201-y6x8zse16c/

Behaviour

GoLang User-Agent

Enumerates kernel/hardware configuration

Reads runtime system information

Changes its process name

Modifies Bash startup script

Creates/modifies Cron job

Creates/modifies environment variables

Enumerates running processes

Modifies init.d

Write file to user bin folder

Executes dropped EXE

Modifies Watchdog functionality

Kaiji

Kaiji family

kaiji_chaosbot

Malware Config

C2 Extraction:

118.107.41.45:808

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

Threat name:

Suspicious File

Score:

0.30

Link:

https://yomi.yoroi.company/submissions/fcdbd042bf46dd262812f3ceb6d2b8bbec48535c170c88619623c351d70444ac

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:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

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

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:	Linux_Trojan_Kaiji_91091be3 Create hunting rule
Author:	Elastic Security

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

Rule name:	NET Create hunting rule
Author:	malware-lu

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

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

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