MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6b2d4b72f1e5302f8db2683de4c2406c1057d74c2412fba669e4c5dbfd14c198. 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 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6b2d4b72f1e5302f8db2683de4c2406c1057d74c2412fba669e4c5dbfd14c198
SHA3-384 hash: ecb42010891e17a2938b9d8ccc42637c86c06a4d3ad8d39a3ef0249a5fc280ea3bcfc9cee112dfebe6adb8c6eca185b4
SHA1 hash: d25073e3a3682a8b797ac7c499b2cceee28586a8
MD5 hash: 8e4734de8ca3b7abd55db385dc83303e
humanhash: lactose-hydrogen-quiet-cat
File name:linux_mips64el
Download: download sample
Signature Kaiji
Create hunting rule
File size:6'160'384 bytes
First seen:2025-09-28 13:48:58 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 49152:FY7BgFhpjnm60P62sBv2d7le/35gWr5cKIbIIGiIIssuIDA6IIkfVT8JJuoUvxMR:FY7Bov56KIbIIGiIIssuIDA6IIkHMv
TLSH T17756F901AEC26B66C5DC037445FE925622643E145B950B2313B8EFB83E7773EEF56888
gimphash 44693be645dd81ce63c2d34b2a7a6cbf5ad30e5504566fee7e7e6c6f5e77a2c6
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 :
69
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:

Behaviour
Sends data to a server
Creating a file
Manages services
Sets a written file as executable
Receives data from a server
Changes the time when the file was created, accessed, or modified
Sets a file as executable
Launching a process
Connection attempt
Kills processes
Locks files
Creating a process from a recently created file
Creates or modifies files in /init.d to set up autorun
Performs a bruteforce attack in the network
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
crypto expand golang lolbin
Link:
https://www.filescan.io/uploads/68d93ce7c564c8e81d095a8e/reports/45e5fe7a-e031-4e2b-8574-e216ab863f4e/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
mips
Packer:
not packed
Botnet:
unknown
Number of open files:
7
Number of processes launched:
1
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/6b2d4b72f1e5302f8db2683de4c2406c1057d74c2412fba669e4c5dbfd14c198
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2025-09-28T11:43:00Z UTC
Last seen:
2025-09-28T11:43:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan.Linux.Chaos.mj
Link:
https://opentip.kaspersky.com/6b2d4b72f1e5302f8db2683de4c2406c1057d74c2412fba669e4c5dbfd14c198/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/13ae4e52-bc90-4837-bad7-caa7d2db5f9b
Behavior Graph:
Download SVG
%3 guuid=d6d52038-2100-0000-8310-f002880a0000 pid=2696 /usr/bin/sudo guuid=5796083a-2100-0000-8310-f0028d0a0000 pid=2701 /tmp/sample.bin guuid=d6d52038-2100-0000-8310-f002880a0000 pid=2696->guuid=5796083a-2100-0000-8310-f0028d0a0000 pid=2701 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/b58514e8-5e2c-4bed-af30-7f71a4335b0d
Result
Threat name:
Chaos
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
56 / 100
Link:
https://www.joesandbox.com/analysis/1785517
Signature
Multi AV Scanner detection for submitted file
Yara detected Chaos
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1785517 Sample: linux_mips64el.elf Startdate: 28/09/2025 Architecture: LINUX Score: 56 12 109.202.202.202, 80 INIT7CH Switzerland 2->12 14 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->14 16 2 other IPs or domains 2->16 18 Multi AV Scanner detection for submitted file 2->18 20 Yara detected Chaos 2->20 6 dash rm 2->6         started        8 dash rm 2->8         started        10 linux_mips64el.elf 2->10         started        signatures3 process4
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/6b2d4b72f1e5302f8db2683de4c2406c1057d74c2412fba669e4c5dbfd14c198
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6b2d4b72f1e5302f8db2683de4c2406c1057d74c2412fba669e4c5dbfd14c198/
Verdict:
Malicious
Threat:
Family.KAIJI
Link:
https://tip.neiki.dev/file/6b2d4b72f1e5302f8db2683de4c2406c1057d74c2412fba669e4c5dbfd14c198
Threat name:
Linux.Trojan.Kaiji
Create hunting rule
Status:
Malicious
First seen:
2025-09-28 13:50:38 UTC
File Type:
ELF64 Little (Exe)
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nmwuw4xr4uyc7dnsna66jqsanqifpv2meqjpxjtj4tc5x7iuygma._file
Result
Malware family:
kaiji
Create hunting rule
Score:
  10/10
Tags:
family:kaiji discovery
Link:
https://tria.ge/reports/250928-q4wndagn6z/
Behaviour
System Network Configuration Discovery
Verdict:
Unknown
Tags:
trojan chaos kaiji
YARA:
ELF_Kaiji_Chaos_April_2024
Link:
https://app.threat.zone/submission/a753540b-dddc-425d-9b54-29dcf791051f
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/6b2d4b72f1e5302f8db2683de4c2406c1057d74c2412fba669e4c5dbfd14c198

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: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:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
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 6b2d4b72f1e5302f8db2683de4c2406c1057d74c2412fba669e4c5dbfd14c198

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3633848/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3633849/
  
URLhaus
https://urlhaus.abuse.ch/url/3633975/
  
URLhaus
https://urlhaus.abuse.ch/url/3633977/

Comments