MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0088509f1ac99fd21921ff6a7b1dfd4a1d069f33be5e12cb8416fadae8a26984. 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 25 File information Comments
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SHA256 hash: 0088509f1ac99fd21921ff6a7b1dfd4a1d069f33be5e12cb8416fadae8a26984
SHA3-384 hash: 241f324abcc7fb091ad577e5f2135882c6826788b0c2f71b0feaf3ae0a197b5b72af459b893ba829e2db15e2c11934fe
SHA1 hash: 74bc93bacb4e830c007d91ce15b884acd8a5a633
MD5 hash: da51a0366f0db5d72cf9a86a4eb2847b
humanhash: tango-london-missouri-beryllium
File name:linux_amd64
Download: download sample
Signature Kaiji
Create hunting rule
File size:5'435'392 bytes
First seen:2026-02-25 20:32:13 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 49152:7Xa6xzZWhrb/T4vO90dL3BmAFd4A64nsfJPJ6TdXnT9aqeJaz2xNkapDnYRQoj1n:b2ONLBzSxtST7ElHz
TLSH T15E463943F89095A8C1EED13086629293BA717C895F3463D32F50FBB92B76BD46E79310
telfhash t105a231705abc74b1a667c961f3b374b4e63758b563f474b100276c92efe0e481ca682b
gimphash 8489141d42b5763d2533ede66ffeb9a2eae979105cb5dc27154b16bbb78716ff
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 :
63
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.30444.LC.UNOFFICIAL
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Unix.Trojan.Kaiji-9975495-0
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Unix.Malware.Kaiji-10002376-0
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Unix.Malware.Kaiji-10003612-0
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Unix.Malware.Kaiji-10003670-0
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Unix.Malware.Kaiji-10025522-0
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Unix.Malware.Kaiji-10028086-0
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Unix.Malware.Kaiji-10028719-0
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Changes the time when the file was created, accessed, or modified
Manages services
Receives data from a server
Sends data to a server
Launching a process
Connection attempt
Creates directories in a system directory
DNS request
Sets a written file as executable
Creating a file
Mounts file systems
Creating a process from a recently created file
Locks files
Writes files to system directory
Replaces system binary files
Creates or modifies files in /cron to set up autorun
Writes files to system subdirectory
Substitutes an application name
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
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
base64 chaos crypto expand golang kaiji lolbin obfuscated
Link:
https://www.filescan.io/uploads/699f5c5b10e80629d4f2a48e/reports/b4d065e2-ad1d-4451-8edb-f84e4c0ced35/overview
Result
Gathering data
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/3cd228c0-7af0-4c09-a45f-8c978aad40cc
Result
Threat name:
Chaos
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Detection:
malicious
Classification:
spre.troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1875001
Signature
Antivirus / Scanner detection for submitted sample
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
Uses known network protocols on non-standard ports
Yara detected Chaos
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1875001 Sample: linux_amd64.elf Startdate: 25/02/2026 Architecture: LINUX Score: 84 120 118.107.41.238, 40922, 40926, 57916 BCPL-SGBGPNETGlobalASNSG Singapore 2->120 122 www.google.com 2->122 124 Antivirus / Scanner detection for submitted sample 2->124 126 Multi AV Scanner detection for submitted file 2->126 128 Yara detected Chaos 2->128 130 Uses known network protocols on non-standard ports 2->130 12 linux_amd64.elf 2->12         started        16 systemd System.img.config 2->16         started        18 systemd cron 2->18         started        20 11 other processes 2->20 signatures3 process4 file5 118 /etc/32678, POSIX 12->118 dropped 140 Sample tries to set files in /etc globally writable 12->140 22 linux_amd64.elf linux_amd64.elf 12->22         started        26 linux_amd64.elf service systemctl 12->26         started        28 linux_amd64.elf bash 12->28         started        30 System.img.config sh 16->30         started        32 System.img.config service systemctl 16->32         started        34 System.img.config pkill 16->34         started        36 System.img.config System.img.config 16->36         started        38 cron 18->38         started        40 4 other processes 20->40 signatures6 process7 file8 108 /etc/profile.d/bash_config.sh, a 22->108 dropped 110 /etc/init.d/ssh, POSIX 22->110 dropped 112 /etc/init.d/linux_kill, POSIX 22->112 dropped 114 /.img, a 22->114 dropped 132 Sample tries to set files in /etc globally writable 22->132 134 Sample tries to persist itself using /etc/profile 22->134 136 Drops files in suspicious directories 22->136 42 linux_amd64.elf bash 22->42         started        46 linux_amd64.elf service systemctl 22->46         started        48 linux_amd64.elf bash 22->48         started        56 5 other processes 22->56 58 4 other processes 26->58 50 bash 32678 28->50         started        52 sh 32678 30->52         started        60 4 other processes 32->60 54 cron sh 38->54         started        signatures9 process10 file11 116 /etc/crontab, ASCII 42->116 dropped 138 Sample tries to persist itself using cron 42->138 70 4 other processes 46->70 72 4 other processes 48->72 62 32678 sleep 50->62         started        64 32678 id.services.conf 52->64         started        66 32678 sleep 52->66         started        68 sh 54->68         started        74 4 other processes 56->74 76 2 other processes 58->76 78 2 other processes 60->78 signatures12 process13 process14 80 id.services.conf service systemctl 64->80         started        82 id.services.conf sh 64->82         started        84 id.services.conf pkill 64->84         started        86 id.services.conf id.services.conf 64->86         started        88 service systemctl 70->88         started        90 service sed 70->90         started        process15 92 service 80->92         started        94 service basename 80->94         started        96 service basename 80->96         started        98 service systemctl 80->98         started        100 sh 32678 82->100         started        process16 102 service systemctl 92->102         started        104 service sed 92->104         started        106 32678 sleep 100->106         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/0088509f1ac99fd21921ff6a7b1dfd4a1d069f33be5e12cb8416fadae8a26984
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/0088509f1ac99fd21921ff6a7b1dfd4a1d069f33be5e12cb8416fadae8a26984/
Threat name:
Linux.Trojan.Kaiji
Create hunting rule
Status:
Malicious
First seen:
2026-02-25 20:33:37 UTC
File Type:
ELF64 Little (Exe)
AV detection:
19 of 36 (52.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=acefbhy2zgp5egjb75vhwhp5jioqnhztxzpbfs4ec35nv2fcngca._file
Result
Malware family:
kaiji
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Score:
  10/10
Tags:
family:kaiji defense_evasion discovery execution linux persistence privilege_escalation
Link:
https://tria.ge/reports/260225-zbjyjsex3a/
Behaviour
GoLang User-Agent
Enumerates kernel/hardware configuration
Reads runtime system information
Changes its process name
Modifies Bash startup script
Write file to user bin folder
Creates/modifies Cron job
Creates/modifies environment variables
Enumerates running processes
Modifies init.d
Executes dropped EXE
Modifies Watchdog functionality
Kaiji
Kaiji family
kaiji_chaosbot
Malware Config
C2 Extraction:
118.107.41.238:808
Malware family:
Kaiji
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/0088509f1ac9/report/overview.html
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/0088509f1ac99fd21921ff6a7b1dfd4a1d069f33be5e12cb8416fadae8a26984

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
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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
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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_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_a40aaa96
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Kaiji_dcf6565e
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
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Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:setsockopt
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Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:SHA1_Constants
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Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
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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)
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 0088509f1ac99fd21921ff6a7b1dfd4a1d069f33be5e12cb8416fadae8a26984

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3785687/
  
Delivery method
Distributed via web download

Comments