MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c93ed6a555c9202b0ff263607a1c39d8e2abe211c57b5f9d4acc80c9dc285c1. 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: 11


Intelligence 11 IOCs YARA 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4c93ed6a555c9202b0ff263607a1c39d8e2abe211c57b5f9d4acc80c9dc285c1
SHA3-384 hash: c7a6185ca9c775c022b6f3c95f5a51978d49b36a62c023af53e0e77a1ee27ed9c52dd55dcad577c3daac193b269ec0bd
SHA1 hash: 18b80cd4506ecc805bc927f0489d604a55539b18
MD5 hash: 09927147f162307d42adee0441a259ba
humanhash: september-oregon-eighteen-oregon
File name:linux_mips_softfloat
Download: download sample
Signature Kaiji
Create hunting rule
File size:6'029'312 bytes
First seen:2025-09-28 13:49:06 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 49152:8dIeDj1h5Yd67kjwah9oBiPkvwLLvpPNd66B2DLuPS6We/9W0snxt9YBBwaTpfm0:uBjU/JrkxuQ0
TLSH T137561723BE59D71EC62921344DB2CA9467693C8946DAA513B281F30EB8F10BC1D6FDF1
telfhash t149c08c458b10229c7d812dd19e8cf53334e8e563197a109cfaba90838a3c4b3a21c92c
gimphash 8c79a97ba015c48d3fe551f55fab6b128642b1eda101e793482aa9334653b862
Magika elf
Reporter abuse_ch
Tags:elf kaiji

Intelligence

File Origin
# of uploads :
1
# of downloads :
72
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.Malware.Kaiji-10002376-0
Create hunting rule

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

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

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Receives data from a server
Locks files
Sets a file as executable
Changes the time when the file was created, accessed, or modified
Creating a process from a recently created file
Sets a written file as executable
DNS request
Manages services
Creating a file
Sends data to a server
Connection attempt
Launching a process
Writes files to system subdirectory
Writes files to system directory
Creates or modifies files in /init.d to set up autorun
Performs a bruteforce attack in the network
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
golang obfuscated
Link:
https://www.filescan.io/uploads/68d93d39674d5fd6aa0ef355/reports/a5d3aad4-b472-42d8-a496-f57c25061299/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
mips
Packer:
not packed
Botnet:
unknown
Number of open files:
14
Number of processes launched:
13
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/4c93ed6a555c9202b0ff263607a1c39d8e2abe211c57b5f9d4acc80c9dc285c1
Behaviour
Persistence
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.be
First seen:
2025-09-28T11:55:00Z UTC
Last seen:
2025-09-28T11:55:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/4c93ed6a555c9202b0ff263607a1c39d8e2abe211c57b5f9d4acc80c9dc285c1/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/0f74b818-b411-4b5f-b02f-44822e51143a
Behavior Graph:
Download SVG
%3 guuid=1151c0af-1600-0000-2724-67d19b0c0000 pid=3227 /usr/bin/sudo guuid=6f6799b1-1600-0000-2724-67d19e0c0000 pid=3230 /tmp/sample.bin guuid=1151c0af-1600-0000-2724-67d19b0c0000 pid=3227->guuid=6f6799b1-1600-0000-2724-67d19e0c0000 pid=3230 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/4a36a08f-ca51-481f-9cbb-2d89d967effb
Result
Threat name:
Chaos
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
56 / 100
Link:
https://www.joesandbox.com/analysis/1785513
Signature
Multi AV Scanner detection for submitted file
Yara detected Chaos
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1785513 Sample: linux_mips_softfloat.elf Startdate: 28/09/2025 Architecture: LINUX Score: 56 19 109.202.202.202, 80 INIT7CH Switzerland 2->19 21 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->21 23 2 other IPs or domains 2->23 25 Multi AV Scanner detection for submitted file 2->25 27 Yara detected Chaos 2->27 7 sshd sshd 2->7         started        9 sshd sshd 2->9         started        11 sshd sshd 2->11         started        13 3 other processes 2->13 signatures3 process4 process5 15 sshd 7->15         started        17 sshd 9->17         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/4c93ed6a555c9202b0ff263607a1c39d8e2abe211c57b5f9d4acc80c9dc285c1
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4c93ed6a555c9202b0ff263607a1c39d8e2abe211c57b5f9d4acc80c9dc285c1/
Threat name:
Linux.Trojan.Kaiji
Create hunting rule
Status:
Malicious
First seen:
2025-09-28 13:53:30 UTC
File Type:
ELF32 Big (Exe)
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jsj622svlsjafmh7ey3apiodtwhcvprbdrl3l6ouvteazhocqxaq._file
Result
Malware family:
kaiji
Create hunting rule
Score:
  10/10
Tags:
family:kaiji discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/250928-q5mrvsgn9s/
Behaviour
GoLang User-Agent
Enumerates kernel/hardware configuration
Reads runtime system information
System Network Configuration Discovery
Changes its process name
Reads CPU attributes
Creates/modifies Cron job
Enumerates running processes
Executes dropped EXE
Kaiji
Kaiji family
kaiji_chaosbot
Verdict:
Malicious
Tags:
trojan kaiji chaos Unix.Trojan.Kaiji-9975494-0
YARA:
ELF_Kaiji_Chaos_April_2024
Link:
https://app.threat.zone/submission/516b9492-5f48-41e2-96ff-559278802f71
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/4c93ed6a555c9202b0ff263607a1c39d8e2abe211c57b5f9d4acc80c9dc285c1

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 4c93ed6a555c9202b0ff263607a1c39d8e2abe211c57b5f9d4acc80c9dc285c1

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3633854/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3633976/

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