MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0b6afd80b86f121ce1bc892df6ab1c206493c52e3e46f4136980620a867007f0. 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 21 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 0b6afd80b86f121ce1bc892df6ab1c206493c52e3e46f4136980620a867007f0
SHA3-384 hash: f374839635a44eb7518338092ae7b747a8bbd886b9a746b40c0266d076f567c7fef18715797a0e7770671602015ecc6b
SHA1 hash: 55aaf2f73a89969dc87f2b3d7e168dc923f246dc
MD5 hash: 61a00c9a2e15bfc31c54da66c3c97a2e
humanhash: sierra-neptune-march-magnesium
File name:linux_arm6
Download: download sample
Signature Kaiji
Create hunting rule
File size:5'308'416 bytes
First seen:2025-10-13 07:58:48 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 98304:8cSBHdgN2a7JP97kJru8cYWPAXqou+60:8cS03wu+6
TLSH T13D362A57B8D28A42C0E4367ABCBDC1C432675EB99B9B12675D04FE3D3ABE1990E35304
telfhash t10dc02bc21f0c079cff1be0080801a70927d621310011013d8f52f0831c20cb2334c02a
gimphash d32a616709154d99f5f34672a5e693bcff5dc106b2584b8d6f593ff16d689453
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 :
55
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.30444.LC.UNOFFICIAL
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-10028086-0
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
expand golang lolbin obfuscated threat
Link:
https://www.filescan.io/uploads/68ecb1629da6b44f3c8b6363/reports/83890da2-9b1d-436c-abdb-3d3a09306756/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
not packed
Botnet:
unknown
Number of open files:
0
Number of processes launched:
0
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/0b6afd80b86f121ce1bc892df6ab1c206493c52e3e46f4136980620a867007f0
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-10-13T06:29:00Z UTC
Last seen:
2025-10-13T07:09:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/0b6afd80b86f121ce1bc892df6ab1c206493c52e3e46f4136980620a867007f0/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/c5dd56ac-a9cb-46ae-89e1-bfbf0141954c
Behavior Graph:
Download SVG
%3 guuid=f1be20f7-1800-0000-8fba-1a2580130000 pid=4992 /usr/bin/sudo guuid=378312f9-1800-0000-8fba-1a2587130000 pid=4999 /tmp/sample.bin guuid=f1be20f7-1800-0000-8fba-1a2580130000 pid=4992->guuid=378312f9-1800-0000-8fba-1a2587130000 pid=4999 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/ff1e59d7-6a7a-49e2-94f2-1743b8c8b5c7
Result
Threat name:
Chaos
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1793816
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 Chaos
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1793816 Sample: linux_arm6.elf Startdate: 13/10/2025 Architecture: LINUX Score: 76 90 154.201.82.47, 50940, 50944, 50948 PEGTECHINCUS Seychelles 2->90 92 109.202.202.202, 80 INIT7CH Switzerland 2->92 94 4 other IPs or domains 2->94 96 Multi AV Scanner detection for submitted file 2->96 98 Yara detected Chaos 2->98 10 linux_arm6.elf 2->10         started        14 systemd System.img.config 2->14         started        16 systemd snapd-env-generator 2->16         started        18 4 other processes 2->18 signatures3 process4 file5 86 /etc/id.services.conf, ELF 10->86 dropped 88 /etc/32678, POSIX 10->88 dropped 110 Sample tries to set files in /etc globally writable 10->110 112 Writes identical ELF files to multiple locations 10->112 20 linux_arm6.elf linux_arm6.elf 10->20         started        24 linux_arm6.elf service systemctl 10->24         started        26 linux_arm6.elf bash 10->26         started        28 System.img.config service systemctl 14->28         started        30 System.img.config sh 14->30         started        32 System.img.config pkill 14->32         started        34 System.img.config System.img.config 14->34         started        signatures6 process7 file8 76 /usr/lib/system-monitor, ELF 20->76 dropped 78 /usr/lib/libdlrpcld.so, ELF 20->78 dropped 80 /usr/bin/ss, ELF 20->80 dropped 82 12 other files (11 malicious) 20->82 dropped 100 Sample tries to set files in /etc globally writable 20->100 102 Writes identical ELF files to multiple locations 20->102 104 Sample tries to persist itself using /etc/profile 20->104 106 Drops files in suspicious directories 20->106 36 linux_arm6.elf bash 20->36         started        40 linux_arm6.elf bash 20->40         started        50 2 other processes 20->50 42 service 24->42         started        52 3 other processes 24->52 44 bash 32678 26->44         started        46 service 28->46         started        54 3 other processes 28->54 48 sh 32678 30->48         started        signatures9 process10 file11 84 /etc/crontab, ASCII 36->84 dropped 108 Sample tries to persist itself using cron 36->108 68 4 other processes 40->68 56 service systemctl 42->56         started        58 service sed 42->58         started        60 32678 sleep 44->60         started        70 2 other processes 46->70 62 32678 id.services.conf 48->62         started        64 32678 sleep 48->64         started        66 update-rc.d systemctl 50->66         started        72 3 other processes 50->72 signatures12 process13 process14 74 id.services.conf pkill 62->74         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/0b6afd80b86f121ce1bc892df6ab1c206493c52e3e46f4136980620a867007f0
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/0b6afd80b86f121ce1bc892df6ab1c206493c52e3e46f4136980620a867007f0/
Threat name:
Linux.Trojan.Kaiji
Create hunting rule
Status:
Malicious
First seen:
2025-10-13 07:59:38 UTC
File Type:
ELF32 Little (Exe)
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=bnvp3afyn4jbzyn4rew7nky4ebsjhrjohzdpie3jqbravbtqa7ya._file
Result
Malware family:
kaiji
Create hunting rule
Score:
  10/10
Tags:
family:kaiji defense_evasion discovery execution persistence privilege_escalation ransomware
Link:
https://tria.ge/reports/251013-jvl91swxbv/
Behaviour
Enumerates kernel/hardware configuration
Reads runtime system information
Changes its process name
Modifies Bash startup script
Creates/modifies Cron job
Creates/modifies environment variables
Enumerates running processes
Modifies init.d
Modifies systemd
Write file to user bin folder
Executes dropped EXE
Modifies Watchdog functionality
Renames multiple (1004) files with added filename extension
Malware Config
C2 Extraction:
154.201.82.47:809
Verdict:
Malicious
Tags:
trojan chaos kaiji Unix.Trojan.Kaiji-9975495-0
YARA:
ELF_Kaiji_Chaos_April_2024
Link:
https://app.threat.zone/submission/c9582523-fcc7-4cb5-9823-bbab42a59ac1
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/0b6afd80b86f121ce1bc892df6ab1c206493c52e3e46f4136980620a867007f0

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: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:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
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: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: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 0b6afd80b86f121ce1bc892df6ab1c206493c52e3e46f4136980620a867007f0

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3581008/
  
Delivery method
Distributed via web download

Comments