MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 00adc960a4c5b25828f84d45e8225c08e66cb9315cb745702b3007e1f7bb1a80. 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: 12


Intelligence 12 IOCs YARA 23 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 00adc960a4c5b25828f84d45e8225c08e66cb9315cb745702b3007e1f7bb1a80
SHA3-384 hash: 3ec0f7832cbd7c2e083937cf19eaa99fd9640bdf38e91aeaff95f07884500afc2c8402f6695d8b89b417f83a5c2c94ed
SHA1 hash: 5f234d83b8e7ab8973174062afba406f76f9a12a
MD5 hash: 143b4c1b4de6cfb4fa8ec8bf4f39f4ca
humanhash: mobile-fish-tennis-comet
File name:linux_arm6
Download: download sample
Signature Kaiji
Create hunting rule
File size:5'373'952 bytes
First seen:2025-09-28 13:49:04 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 49152:OivdZEsC7nnDdZbOYmp1AOC3RgZOFUXXHAkJU1F1:TvdZRCDDdd1u1MRxc
TLSH T165461A97B8D18653C0E4367ABCBD81C432631EB99B9B12676D04FE3D3ABE1990E35704
telfhash t193c02bc21f0c04dcf71ff008004b831945e931700010014ccf16b0d32c14833305c436
gimphash 8c79a97ba015c48d3fe551f55fab6b128642b1eda101e793482aa9334653b862
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 :
37
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.30444.LC.UNOFFICIAL
Create hunting rule

Unix.Trojan.Kaiji-9975494-0
Create hunting rule

Unix.Trojan.Kaiji-9975495-0
Create hunting rule

Unix.Malware.Kaiji-10002376-0
Create hunting rule

Unix.Malware.Kaiji-10003612-0
Create hunting rule

Unix.Malware.Kaiji-10003670-0
Create hunting rule

Unix.Malware.Kaiji-10025522-0
Create hunting rule

Unix.Malware.Kaiji-10028719-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
expand golang lolbin obfuscated threat
Link:
https://www.filescan.io/uploads/68d93d216c140e5b35fefda5/reports/c5d3c44a-1468-452d-be8c-69cc15bf29fd/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
not packed
Botnet:
unknown
Number of open files:
0
Number of processes launched:
0
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/00adc960a4c5b25828f84d45e8225c08e66cb9315cb745702b3007e1f7bb1a80
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-09-28T11:55:00Z UTC
Last seen:
2025-09-28T11:55:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan.Linux.Chaos.mj
Link:
https://opentip.kaspersky.com/00adc960a4c5b25828f84d45e8225c08e66cb9315cb745702b3007e1f7bb1a80/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/253a7208-fa72-40c8-87f2-6f55e7c14bc8
Behavior Graph:
Download SVG
%3 guuid=1b76dd21-1b00-0000-7b73-32f7db0a0000 pid=2779 /usr/bin/sudo guuid=494d3024-1b00-0000-7b73-32f7e40a0000 pid=2788 /tmp/sample.bin guuid=1b76dd21-1b00-0000-7b73-32f7db0a0000 pid=2779->guuid=494d3024-1b00-0000-7b73-32f7e40a0000 pid=2788 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/10143d13-3810-45da-878e-09c25053fa36
Result
Threat name:
Chaos
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1785514
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
Uses known network protocols on non-standard ports
Writes identical ELF files to multiple locations
Yara detected Chaos
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1785514 Sample: linux_arm6.elf Startdate: 28/09/2025 Architecture: LINUX Score: 80 122 202.61.139.18, 45076, 56494, 808 TH-AS-APTianhaiInfoTechCN Australia 2->122 124 www.google.com 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_arm6.elf 2->12         started        16 systemd System.img.config 2->16         started        18 systemd cron 2->18         started        20 10 other processes 2->20 signatures3 process4 file5 118 /etc/id.services.conf, ELF 12->118 dropped 120 /etc/32678, POSIX 12->120 dropped 142 Sample tries to set files in /etc globally writable 12->142 144 Writes identical ELF files to multiple locations 12->144 22 linux_arm6.elf linux_arm6.elf 12->22         started        26 linux_arm6.elf service systemctl 12->26         started        28 linux_arm6.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 2 other processes 20->40 signatures6 process7 file8 108 /usr/lib/system-monitor, ELF 22->108 dropped 110 /usr/lib/libdlrpcld.so, ELF 22->110 dropped 112 /usr/bin/ss, ELF 22->112 dropped 114 12 other files (11 malicious) 22->114 dropped 132 Sample tries to set files in /etc globally writable 22->132 134 Writes identical ELF files to multiple locations 22->134 136 Sample tries to persist itself using /etc/profile 22->136 138 Drops files in suspicious directories 22->138 42 linux_arm6.elf bash 22->42         started        46 linux_arm6.elf service systemctl 22->46         started        48 linux_arm6.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 140 Sample tries to persist itself using cron 42->140 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/00adc960a4c5b25828f84d45e8225c08e66cb9315cb745702b3007e1f7bb1a80
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/00adc960a4c5b25828f84d45e8225c08e66cb9315cb745702b3007e1f7bb1a80/
Verdict:
Malicious
Threat:
Family.KAIJI
Link:
https://tip.neiki.dev/file/00adc960a4c5b25828f84d45e8225c08e66cb9315cb745702b3007e1f7bb1a80
Threat name:
Linux.Trojan.Kaiji
Create hunting rule
Status:
Malicious
First seen:
2025-09-28 13:50:39 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=acw4syfeywzfqkhyjvc6qis4bdtgzojrls3uk4blgad6d553dkaa._file
Result
Malware family:
kaiji
Create hunting rule
Score:
  10/10
Tags:
family:kaiji defense_evasion discovery execution persistence privilege_escalation ransomware
Link:
https://tria.ge/reports/250928-q5dh7axtfx/
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
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:
202.61.139.18:8080
Verdict:
Malicious
Tags:
trojan kaiji chaos Unix.Trojan.Kaiji-9975494-0
YARA:
ELF_Kaiji_Chaos_April_2024
Link:
https://app.threat.zone/submission/3b7a3638-7f62-436a-b4ca-ae6631302b36
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/00adc960a4c5b25828f84d45e8225c08e66cb9315cb745702b3007e1f7bb1a80

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:botnet_plaintext_c2
Create hunting rule
Author:cip
Description:Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.
Rule name:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
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: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: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: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 00adc960a4c5b25828f84d45e8225c08e66cb9315cb745702b3007e1f7bb1a80

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3633853/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3633971/

Comments