MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6780e6cc7907e30deba055a98f78b02561411cc866a86fccbf555481b8eecd65. 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 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6780e6cc7907e30deba055a98f78b02561411cc866a86fccbf555481b8eecd65
SHA3-384 hash: cf5138e51c92c8e9244309cb58027d3ce93eadc2927c5a03a2c5d20846b6d1380612bdf3ea584f62120412557c539224
SHA1 hash: 12d757ff03af4fecb4ee2c2beb438f31d0d8ae6d
MD5 hash: 125e6ed1bc0de7bc8f3b0a73ca55d1e8
humanhash: high-stream-network-september
File name:linux_aarch64
Download: download sample
Signature Kaiji
Create hunting rule
File size:5'046'272 bytes
First seen:2025-02-22 19:21:30 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 49152:+w6IWGDZYMvrffr3WFNJNq06gPRxk5EUAIYFD5YEEeKeI1:d6IWGDjvrffr3Wh6grWEd
TLSH T199364A99FC1DB862EAC87AB46F350194B739FC499F4183277518BBAD6AF13148F21360
gimphash e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
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 :
22
Origin country :
US US
Vendor Threat Intelligence
Detection(s):
Unix.Malware.Kaiji-10003730-0
Create hunting rule

Unix.Malware.Kaiji-10003917-0
Create hunting rule

Unix.Malware.Kaiji-10028246-0
Create hunting rule

Verdict:
Clean
Score:
84.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67ba240228ab76d43a5c6b62linux22vpnfull_triage
Tags:
n/a
Result
Verdict:
Malware
Maliciousness:

Behaviour
Deleting a recently created file
Manages services
Connection attempt
Creating a file
Mounts file systems
Creates directories in a system directory
Sets a written file as executable
Locks files
Launching a process
Creating a process from a recently created file
Runs as daemon
Receives data from a server
Sends data to a server
Changes the time when the file was created, accessed, or modified
Writes files to system directory
Writes files to system subdirectory
Replaces system binary files
Creates or modifies files in /cron to set up autorun
Creates or modifies files in /init.d to set up autorun
Creates or modifies files to set up autorun
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
crypto expand golang lolbin obfuscated
Link:
https://www.filescan.io/uploads/67ba23ee6222db7f23d8b824/reports/6cd85ae5-1040-401d-aff6-0f1d98f4bee2/overview
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/16adea0a-0197-4d4e-a281-198740164e66
Result
Threat name:
Kaiji
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1621915
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
Writes identical ELF files to multiple locations
Yara detected Kaiji
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1621915 Sample: linux_aarch64.elf Startdate: 22/02/2025 Architecture: LINUX Score: 76 97 196.251.85.22, 40100, 50000 SONIC-WirelessZA Seychelles 2->97 99 109.202.202.202, 80 INIT7CH Switzerland 2->99 101 3 other IPs or domains 2->101 105 Multi AV Scanner detection for submitted file 2->105 107 Yara detected Kaiji 2->107 11 linux_aarch64.elf 2->11         started        13 systemd cron 2->13         started        15 systemd cron 2->15         started        17 6 other processes 2->17 signatures3 process4 process5 19 linux_aarch64.elf linux_aarch64.elf 11->19         started        23 cron 13->23         started        25 cron 15->25         started        27 System.mod System.mod 17->27         started        29 System.mod System.mod 17->29         started        file6 87 /usr/lib/system-mark, ELF 19->87 dropped 89 /usr/lib/libgdi.so.0.8.1, ELF 19->89 dropped 91 /usr/bin/ss, ELF 19->91 dropped 93 63 other files (62 malicious) 19->93 dropped 109 Sample tries to set files in /etc globally writable 19->109 111 Writes identical ELF files to multiple locations 19->111 113 Sample tries to persist itself using /etc/profile 19->113 115 Drops files in suspicious directories 19->115 31 linux_aarch64.elf bash 19->31         started        35 linux_aarch64.elf bash 19->35         started        37 linux_aarch64.elf service systemctl 19->37         started        43 6 other processes 19->43 39 cron sh 23->39         started        41 cron sh 25->41         started        signatures7 process8 file9 95 /etc/crontab, ASCII 31->95 dropped 103 Sample tries to persist itself using cron 31->103 45 bash 32675 35->45         started        47 service 37->47         started        49 service basename 37->49         started        51 service basename 37->51         started        53 service systemctl 37->53         started        55 sh .mod 39->55         started        57 sh .mod 41->57         started        59 service 43->59         started        61 10 other processes 43->61 signatures10 process11 process12 63 32675 opt.services.cfg 45->63         started        65 32675 sleep 45->65         started        79 2 other processes 45->79 67 service systemctl 47->67         started        69 service sed 47->69         started        71 .mod libgdi.so.0.8.1 55->71         started        73 .mod libgdi.so.0.8.1 57->73         started        75 service systemctl 59->75         started        77 service sed 59->77         started        process13 81 opt.services.cfg opt.services.cfg 63->81         started        83 libgdi.so.0.8.1 libgdi.so.0.8.1 71->83         started        85 libgdi.so.0.8.1 libgdi.so.0.8.1 73->85         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/6780e6cc7907e30deba055a98f78b02561411cc866a86fccbf555481b8eecd65
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6780e6cc7907e30deba055a98f78b02561411cc866a86fccbf555481b8eecd65/
Threat name:
Linux.Trojan.Kaiji
Create hunting rule
Status:
Malicious
First seen:
2025-02-22 19:22:39 UTC
File Type:
ELF64 Little (Exe)
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=m6aontdza7rq325akwuy66fqevquchgim2ug7tf7kvkidohozvsq._file
Result
Malware family:
kaiji
Create hunting rule
Score:
  10/10
Tags:
family:kaiji linux
Link:
https://tria.ge/reports/250222-x3lkcaxrx4/
Verdict:
Malicious
Tags:
Unix.Malware.Kaiji-10003730-0
YARA:
n/a
Link:
https://app.threat.zone/submission/01f1e1ce-f111-4351-9c78-2164038d7c5a
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kaiji
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/6780e6cc7907e30deba055a98f78b02561411cc866a86fccbf555481b8eecd65

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:DetectGoMethodSignatures
Create hunting rule
Author:Wyatt Tauber
Description:Detects Go method signatures in unpacked Go binaries
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
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:Linux_Generic_Threat_cd9ce063
Create hunting rule
Author:Elastic Security
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:test_Malaysia
Create hunting rule
Author:rectifyq
Description:Detects file containing malaysia string
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 6780e6cc7907e30deba055a98f78b02561411cc866a86fccbf555481b8eecd65

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3448964/
  
Delivery method
Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh

Comments