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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8235183b4bbede6402a39a1db714593fc27fecfda575347ebb0d3f87ac793254. 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 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8235183b4bbede6402a39a1db714593fc27fecfda575347ebb0d3f87ac793254
SHA3-384 hash: 82770823acb72f84e871d761bb6760b48055466be4d4fe9efbe8b7b127e6d0c14b925e85ea766ee0291fd28822537838
SHA1 hash: 3ac4b626f05253533ed401cd958d7a82d66e6acf
MD5 hash: f18fa7b1e7437460d01654ea9e134e29
humanhash: tennessee-twenty-early-rugby
File name:linux_arm5
Download: download sample
Signature Kaiji
Create hunting rule
File size:2'097'152 bytes
First seen:2025-04-16 18:38:12 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 24576:NmGM05U6zdl5megDmMTwJCmxjZthdwpVQsl6nBVSDr21p27DCcSXHXHVhSBPnjKm:N/bNmkr12T1
TLSH T160A5F857B8918542C4E5363BACBE81C833639EB99B8653166D05FE3C3ABF2D90E35314
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 abuse_ch
Tags:elf kaiji

Intelligence

File Origin
# of uploads :
1
# of downloads :
79
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Unix.Malware.Kaiji-10000905-0
Create hunting rule

Unix.Malware.Kaiji-10002375-0
Create hunting rule

Unix.Malware.Kaiji-10003730-0
Create hunting rule

Unix.Malware.Kaiji-10014302-0
Create hunting rule

Unix.Malware.Kaiji-10017581-0
Create hunting rule

Unix.Malware.Kaiji-10028720-0
Create hunting rule

Unix.Malware.Kaiji-9992785-0
Create hunting rule

Unix.Malware.Kaiji-9993888-0
Create hunting rule

Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67fffac5f3fd91e7d60bd8dblinux22vpnfull_triage
Tags:
malware
Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Sets a written file as executable
Collects information on the RAM
Sets a file as executable
Changes the time when the file was created, accessed, or modified
Launching a process
Sends data to a server
Creating a file
Receives data from a server
Creates directories in a system directory
Creating a process from a recently created file
Manages services
Mounts file systems
Replaces system binary files
Writes files to system directory
Creates or modifies files in /cron to set up autorun
Writes files to system subdirectory
Substitutes an application name
Creates or modifies files to set up autorun
Creates or modifies files in /init.d to set up autorun
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
crypto golang
Link:
https://www.filescan.io/uploads/67fff94bb13d3e2cb277bde1/reports/6274187f-ae4d-4246-b6cb-78e9d59398dc/overview
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/ff4b447f-20f8-4969-bc69-68af782b3e92
Result
Threat name:
Kaiji
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1666668
Signature
Drops files in suspicious directories
Multi AV Scanner detection for submitted file
Sample tries to persist itself using /etc/profile
Sample tries to persist itself using cron
Sample tries to set files in /etc globally writable
Yara detected Kaiji
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1666668 Sample: linux_arm5.elf Startdate: 16/04/2025 Architecture: LINUX Score: 72 86 109.202.202.202, 80 INIT7CH Switzerland 2->86 88 154.40.47.248, 51154, 888 COGENT-174US United States 2->88 90 3 other IPs or domains 2->90 92 Multi AV Scanner detection for submitted file 2->92 94 Yara detected Kaiji 2->94 10 dash rm linux_arm5.elf 2->10         started        12 systemd cron 2->12         started        14 systemd cron 2->14         started        16 14 other processes 2->16 signatures3 process4 process5 18 linux_arm5.elf linux_arm5.elf 10->18         started        22 cron 12->22         started        24 cron 14->24         started        file6 76 /etc/profile.d/gateway.sh, Bourne-Again 18->76 dropped 78 /etc/profile.d/bash_cfg.sh, Bourne-Again 18->78 dropped 80 /etc/init.d/x11-common, POSIX 18->80 dropped 82 44 other files (43 malicious) 18->82 dropped 96 Sample tries to set files in /etc globally writable 18->96 98 Sample tries to persist itself using /etc/profile 18->98 100 Drops files in suspicious directories 18->100 26 linux_arm5.elf bash 18->26         started        30 linux_arm5.elf service systemctl 18->30         started        32 linux_arm5.elf service systemctl 18->32         started        38 6 other processes 18->38 34 cron sh 22->34         started        36 cron sh 24->36         started        signatures7 process8 file9 84 /etc/crontab, ASCII 26->84 dropped 102 Sample tries to persist itself using cron 26->102 40 service 30->40         started        42 service basename 30->42         started        52 2 other processes 30->52 44 service 32->44         started        54 3 other processes 32->54 46 sh .mod 34->46         started        48 sh .mod 36->48         started        50 bash 32676 38->50         started        56 7 other processes 38->56 signatures10 process11 process12 58 service systemctl 40->58         started        60 service sed 40->60         started        62 service systemctl 44->62         started        64 service sed 44->64         started        66 .mod 46->66         started        68 .mod 48->68         started        70 32676 sleep 50->70         started        72 32676 sleep 50->72         started        74 3 other processes 50->74
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/8235183b4bbede6402a39a1db714593fc27fecfda575347ebb0d3f87ac793254
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8235183b4bbede6402a39a1db714593fc27fecfda575347ebb0d3f87ac793254/
Threat name:
Linux.Trojan.Kaiji
Create hunting rule
Status:
Malicious
First seen:
2025-04-16 18:39:11 UTC
File Type:
ELF32 Little (Exe)
AV detection:
23 of 38 (60.53%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qi2rqo2lx3pgiavdtio3ofczh7bh73h5uv2ti7v3bu7ypldzgjka._file
Result
Malware family:
kaiji
Create hunting rule
Score:
  10/10
Tags:
family:kaiji defense_evasion discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/250416-xanh8styh1/
Behaviour
Command and Scripting Interpreter: Unix Shell
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
Malware Config
C2 Extraction:
154.40.47.248:888
Please note that we are no longer able to provide a coverage score for Virus Total.

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:DetectGoMethodSignatures
Create hunting rule
Author:Wyatt Tauber
Description:Detects Go method signatures in unpacked Go binaries
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: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: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 8235183b4bbede6402a39a1db714593fc27fecfda575347ebb0d3f87ac793254

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3513593/
  
Delivery method
Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh

Comments