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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7504cc47a4f678a063114be7299971ae8a016e9c520fe4243e30513844dfee69. 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: 7


Intelligence 7 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7504cc47a4f678a063114be7299971ae8a016e9c520fe4243e30513844dfee69
SHA3-384 hash: d250847500e71240bfa0889d5808cfbfbe592e919576125d9f0710d0ab133b08f030af6cffd9db4bb7b6876641162a95
SHA1 hash: 19b992b655a569f00cc9421031bbc96ef3d3c244
MD5 hash: 3b7ddd300af30426bb16f7e57d25966e
humanhash: kentucky-pluto-two-lithium
File name:linux_arm5
Download: download sample
Signature Kaiji
Create hunting rule
File size:2'097'152 bytes
First seen:2023-03-15 06:33:23 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 24576:KcWM10Meqz5TmmhRikDRJEid6/Rm77QZm72fsBGMUQwADtgv5lWVhuBPnjKqZmD0:K5GH0pid2T1
TLSH T1D8A5F857B8918542C4E42637BCBE81C833635EB99B8A53666D05FE3C3ABF2D90E35314
TrID 50.1% (.) ELF Executable and Linkable format (Linux) (4022/12)
49.8% (.O) ELF Executable and Linkable format (generic) (4000/1)
Reporter 0xrb
Tags:elf kaiji

Intelligence

File Origin
# of uploads :
1
# of downloads :
152
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
Unix.Malware.Kaiji-9992785-0
Create hunting rule

Verdict:
No Threat
Threat level:
  2/10
Confidence:
100%
Tags:
anti-debug hacktool
Link:
https://www.filescan.io/uploads/641166dd06c49bd8b6b5e110/reports/50428e5a-8987-494b-b855-d3d1dc101e7c/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
true
Architecture:
arm
Packer:
not packed
Botnet:
unknown
Number of open files:
201
Number of processes launched:
82
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/7504cc47a4f678a063114be7299971ae8a016e9c520fe4243e30513844dfee69
Behaviour
Anti-VM
Persistence
Information Gathering
Botnet C2s
TCP botnet C2(s):
154.7.10.30:888
UDP botnet C2(s):
not identified
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/481bef9a-40eb-40b9-bf46-77fdbb26fb5f
Result
Threat name:
Kaiji
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1193925
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
Snort IDS alert for network traffic
Yara detected Kaiji
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 826827 Sample: linux_arm5.elf Startdate: 15/03/2023 Architecture: LINUX Score: 76 82 109.202.202.202, 80 INIT7CH Switzerland 2->82 84 botmax.top 154.7.10.30, 58830, 888 COGENT-174US United States 2->84 86 3 other IPs or domains 2->86 88 Snort IDS alert for network traffic 2->88 90 Multi AV Scanner detection for submitted file 2->90 92 Yara detected Kaiji 2->92 10 linux_arm5.elf 2->10         started        12 systemd cron 2->12         started        14 udisksd dumpe2fs 2->14         started        16 3 other processes 2->16 signatures3 process4 process5 18 linux_arm5.elf linux_arm5.elf 10->18         started        22 cron 12->22         started        file6 72 /etc/profile.d/gateway.sh, Bourne-Again 18->72 dropped 74 /etc/profile.d/bash_cfg.sh, Bourne-Again 18->74 dropped 76 /etc/init.d/x11-common, POSIX 18->76 dropped 78 44 other files (42 malicious) 18->78 dropped 94 Sample tries to persist itself using /etc/profile 18->94 96 Drops files in suspicious directories 18->96 24 linux_arm5.elf bash 18->24         started        28 linux_arm5.elf service systemctl 18->28         started        30 linux_arm5.elf service systemctl 18->30         started        34 6 other processes 18->34 32 cron sh 22->32         started        signatures7 process8 file9 80 /etc/crontab, ASCII 24->80 dropped 98 Sample tries to persist itself using cron 24->98 36 service 28->36         started        38 service basename 28->38         started        40 service basename 28->40         started        42 service systemctl 28->42         started        44 service 30->44         started        50 3 other processes 30->50 46 sh .mod 32->46         started        48 bash 32676 34->48         started        52 7 other processes 34->52 signatures10 process11 process12 54 service systemctl 36->54         started        56 service sed 36->56         started        58 service systemctl 44->58         started        60 service sed 44->60         started        62 .mod 46->62         started        64 32676 sleep 48->64         started        66 32676 sleep 48->66         started        68 32676 sleep 48->68         started        70 2 other processes 48->70
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7504cc47a4f678a063114be7299971ae8a016e9c520fe4243e30513844dfee69/
Threat name:
Linux.Trojan.Kaiji
Create hunting rule
Status:
Malicious
First seen:
2023-03-15 06:34:08 UTC
File Type:
ELF32 Little (Exe)
AV detection:
8 of 39 (20.51%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=oucmyr5e6z4kayyrjptstglrv2fac3u4kih6ijb6gbitqrg75zuq._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
persistence
Link:
https://tria.ge/reports/230315-hbrvqabh78/
Behaviour
Enumerates kernel/hardware configuration
Reads runtime system information
Writes file to tmp directory
Creates/modifies Cron job
Modifies Bash startup script
Modifies init.d
Write file to user bin folder
Modifies hosts file
Writes DNS configuration
Modifies the Watchdog daemon
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/7504cc47a4f678a063114be7299971ae8a016e9c520fe4243e30513844dfee69

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: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:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
Rule name:yara_template
Create hunting rule

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Comments