MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a2ce4bfd8411324b10576d228b04cb8036e61b998ae9162e6f81ab65cf7416bd. 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: 11


Intelligence 11 IOCs YARA 21 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a2ce4bfd8411324b10576d228b04cb8036e61b998ae9162e6f81ab65cf7416bd
SHA3-384 hash: f97d0d96aac2fe970c2c92b9981186f962110a0ab1ec8df3622cd00387e1354540d02e91de1b9e8b17c57e5bff220ca1
SHA1 hash: 3c287e6495d7cb75304f0c43506d4d9124f444e7
MD5 hash: 0df954759bd65fe0c260820c257a084c
humanhash: early-social-arkansas-december
File name:linux_amd64
Download: download sample
Signature Kaiji
Create hunting rule
File size:2'011'136 bytes
First seen:2026-04-11 18:22:18 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 49152:XXPVKrbvGOQLeS7rb/TCvO90d7HjmAFd4A64nsfJrkaani38J4B+g2vUqHOErz1:tPXZz
TLSH T166952847B89156A9C0AAE234CA664252B761BC991F3163D73F10B3F82F33BD45E39358
telfhash t162d114b148bdb8b4baaadd20b353b578993705e566ec34b05133ec90efc1b845cd2823
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 :
59
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Unix.Malware.Kaiji-9992785-0
Create hunting rule

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

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-10003738-0
Create hunting rule

Unix.Malware.Kaiji-10003978-0
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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Mounts file systems
Connection attempt
Runs as daemon
Kills processes
Launching a process
Locks files
Sends data to a server
Creating a process from a recently created file
Creating a file
Manages services
Changes the time when the file was created, accessed, or modified
Receives data from a server
Sets a written file as executable
Creates directories in a system directory
Writes files to system subdirectory
Creates or modifies files in /cron to set up autorun
Replaces system binary files
Writes files to system directory
Performs a bruteforce attack in the network
Creates or modifies files in /init.d to set up autorun
Creates or modifies files to set up autorun
Gathering data
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2026-03-11T05:23:00Z UTC
Last seen:
2026-04-11T16:46:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan.Linux.Agent.ne
Link:
https://opentip.kaspersky.com/a2ce4bfd8411324b10576d228b04cb8036e61b998ae9162e6f81ab65cf7416bd/results?tab=lookup
Malware family:
Kaiji
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ca4b2ca6-7f4f-4efa-aef4-f18fd6830809
Result
Threat name:
Kaiji
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1896921
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
Suricata IDS alerts for network traffic
Uses IRC for communication with a C&C
Yara detected Kaiji
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1896921 Sample: linux_amd64.elf Startdate: 11/04/2026 Architecture: LINUX Score: 84 99 s4.quicklyspeed.com 176.65.149.237, 56636, 8080 PALTEL-ASPALTELAutonomousSystemPS Germany 2->99 101 183.236.97.73, 22 CMNET-GUANGDONG-APChinaMobilecommunicationscorporation China 2->101 103 www.google.com 2->103 107 Suricata IDS alerts for network traffic 2->107 109 Multi AV Scanner detection for submitted file 2->109 111 Yara detected Kaiji 2->111 113 Uses IRC for communication with a C&C 2->113 11 linux_amd64.elf 2->11         started        13 systemd cron 2->13         started        15 systemd cron 2->15         started        17 6 other processes 2->17 signatures3 process4 process5 19 linux_amd64.elf linux_amd64.elf 11->19         started        23 cron 13->23         started        25 cron 15->25         started        27 System.mod System.mod 17->27         started        29 System.mod System.mod 17->29         started        file6 89 /etc/profile.d/gateway.sh, Bourne-Again 19->89 dropped 91 /etc/profile.d/bash_cfg.sh, Bourne-Again 19->91 dropped 93 /etc/init.d/x11-common, POSIX 19->93 dropped 95 44 other files (43 malicious) 19->95 dropped 115 Sample tries to set files in /etc globally writable 19->115 117 Sample tries to persist itself using /etc/profile 19->117 119 Drops files in suspicious directories 19->119 31 linux_amd64.elf bash 19->31         started        35 linux_amd64.elf bash 19->35         started        37 linux_amd64.elf service systemctl 19->37         started        43 6 other processes 19->43 39 cron sh 23->39         started        41 cron sh 25->41         started        signatures7 process8 file9 97 /etc/crontab, ASCII 31->97 dropped 105 Sample tries to persist itself using cron 31->105 45 bash 32676 35->45         started        47 service 37->47         started        49 service basename 37->49         started        51 service basename 37->51         started        53 service systemctl 37->53         started        55 sh .mod 39->55         started        57 sh .mod 41->57         started        59 service 43->59         started        61 10 other processes 43->61 signatures10 process11 process12 63 32676 opt.services.cfg 45->63         started        65 32676 opt.services.cfg 45->65         started        67 32676 sleep 45->67         started        77 2 other processes 45->77 69 service systemctl 47->69         started        71 service sed 47->71         started        73 .mod libgdi.so.0.8.1 55->73         started        75 .mod libgdi.so.0.8.1 57->75         started        79 2 other processes 59->79 process13 81 opt.services.cfg opt.services.cfg 63->81         started        83 opt.services.cfg opt.services.cfg 65->83         started        85 libgdi.so.0.8.1 libgdi.so.0.8.1 73->85         started        87 libgdi.so.0.8.1 libgdi.so.0.8.1 75->87         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a2ce4bfd8411324b10576d228b04cb8036e61b998ae9162e6f81ab65cf7416bd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a2ce4bfd8411324b10576d228b04cb8036e61b998ae9162e6f81ab65cf7416bd/
Verdict:
Malicious
Threat:
Family.KAIJI
Link:
https://tip.neiki.dev/file/a2ce4bfd8411324b10576d228b04cb8036e61b998ae9162e6f81ab65cf7416bd
Threat name:
Linux.Trojan.Kaiji
Create hunting rule
Status:
Malicious
First seen:
2026-03-11 13:27:38 UTC
File Type:
ELF64 Little (Exe)
AV detection:
18 of 36 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ulhex7mecezewecxnuriwbglqa3omg4zrlurmltpqgvwlt3uc26q._file
Result
Malware family:
kaiji
Create hunting rule
Score:
  10/10
Tags:
family:kaiji defense_evasion discovery execution linux persistence privilege_escalation
Link:
https://tria.ge/reports/260411-wz42vaex7k/
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
Enumerates running processes
Modifies init.d
Write file to user bin folder
Executes dropped EXE
Modifies Watchdog functionality
Creates a large amount of network flows
Kaiji
Kaiji family
Malware Config
C2 Extraction:
s4.quicklyspeed.com:8080
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a2ce4bfd8411324b10576d228b04cb8036e61b998ae9162e6f81ab65cf7416bd

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: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_duffcopy_amd64
Create hunting rule
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_23d54a0e
Create hunting rule
Author:Elastic Security
Rule name:Linux_Generic_Threat_6bed4416
Create hunting rule
Author:Elastic Security
Rule name:Linux_Generic_Threat_a40aaa96
Create hunting rule
Author:Elastic Security
Rule name:Linux_Generic_Threat_d7802b0a
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 a2ce4bfd8411324b10576d228b04cb8036e61b998ae9162e6f81ab65cf7416bd

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3816466/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3816452/

Comments