MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9066394b24a05f71b1908c6761ea0a37e91a4cb9ab1f718e7ed06f2ff72e79cb. 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 24 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9066394b24a05f71b1908c6761ea0a37e91a4cb9ab1f718e7ed06f2ff72e79cb
SHA3-384 hash: 875dea0bbb7a2e71bea2800bb3ff1ec983d6266f5d33a297f1f90d03e4f9ec965b9863376a28380792c8512e5b59e969
SHA1 hash: ead1fae474cd69ace9ec8d6d66cb276e4cfb1880
MD5 hash: eaf55c11dd7e17b897ed38a90fc72903
humanhash: cup-london-fourteen-maryland
File name:linux_amd64
Download: download sample
Signature Kaiji
Create hunting rule
File size:5'398'528 bytes
First seen:2024-09-21 19:00:27 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 49152:8mTtqFdLBZsYQ8rb/T0vO90d7HjmAFd4A64nsfJWpltZ4GhhAl6e9d1SVq82T8xu:Qobp+GhSXAEo
TLSH T1C5463947F85555E8D1AED234CA628262BB717C885B3023E33F50F7B82B32BD46A79354
telfhash t1c1f167b4097d78b4b696d910b392b9b8a937199526ec38b15133b8d0ffc1f815ce5833
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 NDA0E
Tags:elf kaiji

Intelligence

File Origin
# of uploads :
1
# of downloads :
96
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
Unix.Malware.Kaiji-10003730-0
Create hunting rule

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

Unix.Malware.Kaiji-10025520-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
anti-debug expand golang lolbin
Link:
https://www.filescan.io/uploads/66ef17f20883d6a903ed5908/reports/b4c4efbc-88ff-4570-8e7f-bc2d5dd4963c/overview
Result
Verdict:
SUSPICIOUS
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/035a4b05-5a09-4e8c-a1b9-76f97d6869c6
Result
Threat name:
Kaiji
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1515156
Signature
Drops files in suspicious directories
Machine Learning detection for sample
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
Yara detected Kaiji
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1515156 Sample: linux_amd64.elf Startdate: 21/09/2024 Architecture: LINUX Score: 76 93 109.202.202.202, 80 INIT7CH Switzerland 2->93 95 cc.ava9527.cc 23.224.121.29, 51220, 51222, 51224 CNSERVERSUS United States 2->95 97 3 other IPs or domains 2->97 99 Multi AV Scanner detection for submitted file 2->99 101 Yara detected Kaiji 2->101 103 Machine Learning detection for sample 2->103 11 dash rm linux_amd64.elf 2->11         started        13 systemd cron 2->13         started        15 systemd System.mod 2->15         started        17 6 other processes 2->17 signatures3 process4 process5 19 linux_amd64.elf linux_amd64.elf 11->19         started        23 cron 13->23         started        25 System.mod System.mod 15->25         started        27 System.mod System.mod 17->27         started        file6 83 /etc/profile.d/gateway.sh, Bourne-Again 19->83 dropped 85 /etc/profile.d/bash_cfg.sh, Bourne-Again 19->85 dropped 87 /etc/init.d/x11-common, POSIX 19->87 dropped 89 44 other files (43 malicious) 19->89 dropped 105 Sample tries to set files in /etc globally writable 19->105 107 Sample tries to persist itself using /etc/profile 19->107 109 Drops files in suspicious directories 19->109 29 linux_amd64.elf bash 19->29         started        33 linux_amd64.elf bash 19->33         started        35 linux_amd64.elf service systemctl 19->35         started        39 6 other processes 19->39 37 cron sh 23->37         started        signatures7 process8 file9 91 /etc/crontab, ASCII 29->91 dropped 111 Sample tries to persist itself using cron 29->111 41 bash 32675 33->41         started        43 service 35->43         started        45 service basename 35->45         started        47 service basename 35->47         started        49 service systemctl 35->49         started        51 sh .mod 37->51         started        53 service 39->53         started        55 bash systemctl 39->55         started        57 9 other processes 39->57 signatures10 process11 process12 59 32675 opt.services.cfg 41->59         started        61 32675 opt.services.cfg 41->61         started        63 32675 sleep 41->63         started        75 2 other processes 41->75 65 service systemctl 43->65         started        67 service sed 43->67         started        69 .mod libgdi.so.0.8.1 51->69         started        71 service systemctl 53->71         started        73 service sed 53->73         started        process13 77 opt.services.cfg opt.services.cfg 59->77         started        79 opt.services.cfg opt.services.cfg 61->79         started        81 libgdi.so.0.8.1 libgdi.so.0.8.1 69->81         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/9066394b24a05f71b1908c6761ea0a37e91a4cb9ab1f718e7ed06f2ff72e79cb
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9066394b24a05f71b1908c6761ea0a37e91a4cb9ab1f718e7ed06f2ff72e79cb/
Threat name:
Linux.Trojan.Kaiji
Create hunting rule
Status:
Malicious
First seen:
2024-09-21 19:01:06 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=sbtdsszeubpxdmmqrrtwd2qkg7urutfzvmpxddt62bxs75zophfq._file
Result
Malware family:
kaiji
Create hunting rule
Score:
  10/10
Tags:
family:kaiji defense_evasion discovery execution linux persistence privilege_escalatio privilege_escalation ransomware
Link:
https://tria.ge/reports/240921-xn75ssycnn/
Behaviour
Command and Scripting Interpreter: Unix Shell
Enumerates kernel/hardware configuration
Reads runtime system information
Modifies Bash startup script
Abuse Elevation Control Mechanism: Sudo and Sudo Caching
Creates/modifies Cron job
Creates/modifies environment variables
Disables SELinux
Enumerates running processes
Modifies init.d
Modifies systemd
Write file to user bin folder
Executes dropped EXE
Modifies Watchdog functionality
Renames multiple (1040) files with added filename extension
Kaiji
Malware Config
C2 Extraction:
cc.ava9527.cc:60888
Verdict:
Suspicious
Tags:
trojan
YARA:
Linux_Generic_Threat_d7802b0a
Link:
https://app.threat.zone/submission/fbc64afa-443f-4eb6-8a22-75f0405db0bc
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.50
Link:
https://yomi.yoroi.company/submissions/9066394b24a05f71b1908c6761ea0a37e91a4cb9ab1f718e7ed06f2ff72e79cb

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:Detect_APT29_WINELOADER_Backdoor
Create hunting rule
Author:daniyyell
Description:Detects APT29's WINELOADER backdoor variant used in phishing campaigns, this rule also detect bad pdf,shtml,htm and vbs or maybe more depends
Reference:https://cloud.google.com/blog/topics/threat-intelligence/apt29-wineloader-german-political-parties
Rule name:Detect_Malicious_VBScript_Base64
Create hunting rule
Author:daniyyell
Description:Detects malicious VBScript patterns, including Base64 decoding, file operations, and PowerShell.
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:golang_duffcopy_amd64
Create hunting rule
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:Linux_Generic_Threat_d7802b0a
Create hunting rule
Author:Elastic Security
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
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: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 9066394b24a05f71b1908c6761ea0a37e91a4cb9ab1f718e7ed06f2ff72e79cb

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3185020/
  
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