MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6efaad7105c1442f8e047d51d05794e920b33ef37ee5196b79e282a8932f2b38. 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: 8


Intelligence 8 IOCs YARA 24 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6efaad7105c1442f8e047d51d05794e920b33ef37ee5196b79e282a8932f2b38
SHA3-384 hash: b057a5db6946eae5754a612e09cedefa7263dc1654f5d826cf6a8318a4a4a3b92fead72cdc3705128c78de0977abca2f
SHA1 hash: 6fbce3f02a836a0a81a47c8ac5e8fe87465d1d77
MD5 hash: ee0373a8336e794f702b0278e16af96b
humanhash: uniform-helium-quiet-california
File name:linux_arm7
Download: download sample
Signature Kaiji
Create hunting rule
File size:5'308'416 bytes
First seen:2026-02-01 20:23:27 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 49152:PJzG9XxZPF773LVPN9GnMbaVZGNJru8cYWPAXq7nLYvV2rzmpxUIU1F1:hzG9Xn53LtN9pbu0Jru8cYWPAXqk
TLSH T14B361A57B8D28A42C0E4367AACBDC1C433671EB99B9B12675D04FE3D3ABE1990E35314
telfhash t133c08c068c0c0cac339f83240084220853fb3da4001142690f08a1230c41835b08e07b
gimphash d32a616709154d99f5f34672a5e693bcff5dc106b2584b8d6f593ff16d689453
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 :
51
Origin country :
DE DE
Vendor Threat Intelligence
Gathering data
Detection(s):
Sanesecurity.Malware.30444.LC.UNOFFICIAL
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-10028086-0
Create hunting rule

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

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/6efaad7105c1442f8e047d51d05794e920b33ef37ee5196b79e282a8932f2b38
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:
2026-02-01T18:32:00Z UTC
Last seen:
2026-02-01T19:40:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/6efaad7105c1442f8e047d51d05794e920b33ef37ee5196b79e282a8932f2b38/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/0605a40d-fd07-4307-8c22-d5e686f46fea
Behavior Graph:
Download SVG
%3 guuid=da6dc908-1a00-0000-c101-beda580a0000 pid=2648 /usr/bin/sudo guuid=f5cc9c0a-1a00-0000-c101-beda5f0a0000 pid=2655 /tmp/sample.bin guuid=da6dc908-1a00-0000-c101-beda580a0000 pid=2648->guuid=f5cc9c0a-1a00-0000-c101-beda5f0a0000 pid=2655 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/ba62db7e-50e6-457d-a758-501e20c75533
Result
Threat name:
Chaos
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1861297
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: 1861297 Sample: linux_arm7.elf Startdate: 01/02/2026 Architecture: LINUX Score: 80 122 185.125.190.26, 443 CANONICAL-ASGB United Kingdom 2->122 124 118.107.41.45, 33898, 60416, 8011 BCPL-SGBGPNETGlobalASNSG Singapore 2->124 126 www.google.com 2->126 128 Multi AV Scanner detection for submitted file 2->128 130 Yara detected Chaos 2->130 132 Uses known network protocols on non-standard ports 2->132 12 linux_arm7.elf 2->12         started        16 systemd System.img.config 2->16         started        18 sshd sshd 2->18         started        20 7 other processes 2->20 signatures3 process4 file5 118 /etc/id.services.conf, ELF 12->118 dropped 120 /etc/32678, POSIX 12->120 dropped 144 Sample tries to set files in /etc globally writable 12->144 146 Writes identical ELF files to multiple locations 12->146 22 linux_arm7.elf linux_arm7.elf 12->22         started        26 linux_arm7.elf service systemctl 12->26         started        28 linux_arm7.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 sshd 18->38         started        40 sshd 20->40         started        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 134 Sample tries to set files in /etc globally writable 22->134 136 Writes identical ELF files to multiple locations 22->136 138 Sample tries to persist itself using /etc/profile 22->138 140 Drops files in suspicious directories 22->140 42 linux_arm7.elf bash 22->42         started        46 linux_arm7.elf service systemctl 22->46         started        48 linux_arm7.elf bash 22->48         started        56 5 other processes 22->56 50 service 26->50         started        58 3 other processes 26->58 52 bash 32678 28->52         started        54 sh 32678 30->54         started        60 4 other processes 32->60 signatures9 process10 file11 116 /etc/crontab, ASCII 42->116 dropped 142 Sample tries to persist itself using cron 42->142 62 service 46->62         started        70 3 other processes 46->70 72 4 other processes 48->72 74 2 other processes 50->74 64 32678 sleep 52->64         started        66 32678 id.services.conf 54->66         started        68 32678 sleep 54->68         started        76 4 other processes 56->76 78 2 other processes 60->78 signatures12 process13 process14 80 service systemctl 62->80         started        82 service sed 62->82         started        84 id.services.conf service systemctl 66->84         started        86 id.services.conf sh 66->86         started        88 id.services.conf pkill 66->88         started        90 id.services.conf id.services.conf 66->90         started        process15 92 service 84->92         started        94 service basename 84->94         started        96 service basename 84->96         started        98 service systemctl 84->98         started        100 sh 32678 86->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/6efaad7105c1442f8e047d51d05794e920b33ef37ee5196b79e282a8932f2b38
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6efaad7105c1442f8e047d51d05794e920b33ef37ee5196b79e282a8932f2b38/
Threat name:
Linux.Trojan.Kaiji
Create hunting rule
Status:
Malicious
First seen:
2026-02-01 20:25:51 UTC
File Type:
ELF32 Little (Exe)
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=n35k24ifyfcc7dqepvi5av4u5eqlgpxtp3srs23z4kbkrezpfm4a._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/260201-y61n4se16f/
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:
118.107.41.45:808
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/6efaad7105c1442f8e047d51d05794e920b33ef37ee5196b79e282a8932f2b38

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: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: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: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: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 6efaad7105c1442f8e047d51d05794e920b33ef37ee5196b79e282a8932f2b38

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3767526/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3767596/
  
URLhaus
https://urlhaus.abuse.ch/url/3767597/
  
URLhaus
https://urlhaus.abuse.ch/url/3768205/
  
URLhaus
https://urlhaus.abuse.ch/url/3768018/
  
URLhaus
https://urlhaus.abuse.ch/url/3770187/
  
URLhaus
https://urlhaus.abuse.ch/url/3768829/
  
URLhaus
https://urlhaus.abuse.ch/url/3769579/
  
URLhaus
https://urlhaus.abuse.ch/url/3768338/
  
URLhaus
https://urlhaus.abuse.ch/url/3769761/
  
URLhaus
https://urlhaus.abuse.ch/url/3768244/
  
URLhaus
https://urlhaus.abuse.ch/url/3767649/
  
URLhaus
https://urlhaus.abuse.ch/url/3769776/
  
URLhaus
https://urlhaus.abuse.ch/url/3767947/
  
URLhaus
https://urlhaus.abuse.ch/url/3769924/
  
URLhaus
https://urlhaus.abuse.ch/url/3770284/
  
URLhaus
https://urlhaus.abuse.ch/url/3769618/
  
URLhaus
https://urlhaus.abuse.ch/url/3767737/
  
URLhaus
https://urlhaus.abuse.ch/url/3767736/
  
URLhaus
https://urlhaus.abuse.ch/url/3768611/
  
URLhaus
https://urlhaus.abuse.ch/url/3769403/
  
URLhaus
https://urlhaus.abuse.ch/url/3770186/
  
URLhaus
https://urlhaus.abuse.ch/url/3769899/
  
URLhaus
https://urlhaus.abuse.ch/url/3769533/

Comments