MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5fe9f096f711fe78bfa1f4a3fcbb41b39a016a8ef47d55e8adba14bb358a0a78. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5fe9f096f711fe78bfa1f4a3fcbb41b39a016a8ef47d55e8adba14bb358a0a78
SHA3-384 hash: 06a80e0058ea02079d7f2bbb555f8f1fd6bd84021da05ec61c46d63a4ca616b2664e2ae2d21bb9c2186d49f68f39c0d6
SHA1 hash: c96ccaa64a8839d27d5c314c22de257a51875e59
MD5 hash: 4dad309cc72ce51067d485a5853924e0
humanhash: pizza-yankee-football-lake
File name:linux_amd64
Download: download sample
Signature Kaiji
Create hunting rule
File size:1'770'228 bytes
First seen:2025-08-14 21:06:33 UTC
Last seen:2025-08-15 00:15:24 UTC
File type: elf
MIME type:application/x-executable
ssdeep 49152:w4t+wEZnaqE6/Jx9P4w4QGOth9g/3vxjtHIRAYiWz8JJpa/E:w48n9E6/gQGK9gfvFtH1dE/E
TLSH T1B5853387562E4532C3322D73A93649C02B82BD8EB39C767B69352133E1577CC5ED3AA1
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 UPX
File size (compressed) :1'770'228 bytes
File size (de-compressed) :5'435'392 bytes
Format:linux/amd64
Unpacked file: 6a5ffad7eaea62eedabaacdc3269a310bf76163af730a4352ab31c7c2bf0a5e1

Intelligence

File Origin
# of uploads :
3
# of downloads :
28
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Other.Malware-gen.73279153.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Malware family:
Kaiji
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5f4c18d2-92f5-408d-9eb4-1a68f84a90a8
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1757461
Signature
Drops files in suspicious directories
Multi AV Scanner detection for submitted file
Sample is packed with UPX
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1757461 Sample: linux_amd64.elf Startdate: 14/08/2025 Architecture: LINUX Score: 72 120 154.201.82.47, 34688, 34692, 54348 PEGTECHINCUS Seychelles 2->120 122 www.google.com 2->122 124 Multi AV Scanner detection for submitted file 2->124 126 Uses known network protocols on non-standard ports 2->126 128 Sample is packed with UPX 2->128 12 linux_amd64.elf 2->12         started        16 systemd System.img.config 2->16         started        18 systemd cron 2->18         started        20 12 other processes 2->20 signatures3 process4 file5 118 /etc/32678, POSIX 12->118 dropped 138 Sample tries to set files in /etc globally writable 12->138 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        38 2 other processes 16->38 34 cron 18->34         started        36 cron 20->36         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 130 Sample tries to set files in /etc globally writable 22->130 132 Sample tries to persist itself using /etc/profile 22->132 134 Drops files in suspicious directories 22->134 42 linux_amd64.elf bash 22->42         started        46 linux_amd64.elf service systemctl 22->46         started        56 6 other processes 22->56 58 4 other processes 26->58 48 bash 32678 28->48         started        50 sh 32678 30->50         started        60 4 other processes 32->60 52 cron sh 34->52         started        54 cron sh 36->54         started        signatures9 process10 file11 116 /etc/crontab, ASCII 42->116 dropped 136 Sample tries to persist itself using cron 42->136 72 4 other processes 46->72 62 32678 sleep 48->62         started        64 32678 id.services.conf 50->64         started        66 32678 sleep 50->66         started        68 sh 52->68         started        70 sh 54->70         started        74 8 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 72->88         started        90 service sed 72->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/5fe9f096f711fe78bfa1f4a3fcbb41b39a016a8ef47d55e8adba14bb358a0a78
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5fe9f096f711fe78bfa1f4a3fcbb41b39a016a8ef47d55e8adba14bb358a0a78/
Verdict:
Malicious
Threat:
HEUR:Trojan.Linux.Chaos
Link:
https://tip.neiki.dev/file/5fe9f096f711fe78bfa1f4a3fcbb41b39a016a8ef47d55e8adba14bb358a0a78
Threat name:
Linux.Trojan.Kaiji
Create hunting rule
Status:
Malicious
First seen:
2025-08-14 21:09:38 UTC
File Type:
ELF64 Little (Exe)
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=l7u7bfxxch7hrp5b6sr7zo2bwonac2uo6r6vl2fnxiklwnmkbj4a._file
Result
Malware family:
kaiji
Create hunting rule
Score:
  10/10
Tags:
family:kaiji defense_evasion discovery execution linux persistence privilege_escalation upx
Link:
https://tria.ge/reports/250814-zzhqds1tbv/
Behaviour
GoLang User-Agent
Enumerates kernel/hardware configuration
Reads runtime system information
Changes its process name
Modifies Bash startup script
UPX packed file
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
Kaiji
Kaiji family
kaiji_chaosbot
Malware Config
C2 Extraction:
154.201.82.47:808
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/827b3a08-15f5-4369-8387-c73ffba585c9
Malware family:
Kaiji
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/5fe9f096f711/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/5fe9f096f711fe78bfa1f4a3fcbb41b39a016a8ef47d55e8adba14bb358a0a78

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:SUSP_ELF_LNX_UPX_Compressed_File
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a suspicious ELF binary with UPX compression
Reference:Internal Research
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:upx_packed_elf_v1
Create hunting rule
Author:RandomMalware

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Kaiji

elf 5fe9f096f711fe78bfa1f4a3fcbb41b39a016a8ef47d55e8adba14bb358a0a78

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3603522/
  
Delivery method
Distributed via web download

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