MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2b6f56c547be1ee984193bbb9cb613dc8810fc5a0072e3bb097001783175d85d. 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: 9


Intelligence 9 IOCs YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2b6f56c547be1ee984193bbb9cb613dc8810fc5a0072e3bb097001783175d85d
SHA3-384 hash: cd927d2800a373fcd1894c45085b4207a17380a6cee67a3091c482552b506fbbc3f84ca1033dad845a994e25b893aa18
SHA1 hash: 9c07cddc8ad19d6fbfd2b5c1d90c9fe0b66e76d4
MD5 hash: fc816e7d82d80b89a9cf4b040fd0b9f9
humanhash: tango-wisconsin-berlin-september
File name:linux_mips
Download: download sample
Signature Kaiji
Create hunting rule
File size:5'898'240 bytes
First seen:2025-07-11 06:40:40 UTC
Last seen:2025-10-29 15:13:38 UTC
File type: elf
MIME type:application/x-executable
ssdeep 49152:H2EpH9kX4nazMqH5Erob6XMv7fn3FuL9idt42uXYfTYetBDa9zrHAMnpHsLFnoeF:WEiAQUMZudhDM
TLSH T1CB5627037E18D71EC62922305DB2CAD4672A3C8546DB9613B391F31EB8F11AC696EDF1
telfhash t1d1c08c458b20229c7d812dd29e8cf53374e8f563097a109cfe7a9083893c4b3a20c92c
gimphash d32a616709154d99f5f34672a5e693bcff5dc106b2584b8d6f593ff16d689453
Magika elf
Reporter abuse_ch
Tags:elf kaiji
File size (compressed) :1'447'872 bytes
File size (de-compressed) :5'898'240 bytes
Format:linux/mips
Packed file: 9c9c7794d549e9419a4b5fd86d052d9c4fa452b515bd14df074f411c8ad431ad

Intelligence

File Origin
# of uploads :
2
# of downloads :
15
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.30444.LC.UNOFFICIAL
Create hunting rule

Unix.Malware.Kaiji-10002376-0
Create hunting rule

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

Unix.Malware.Reverseshell-10003613-0
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

Verdict:
Clean
Score:
82.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6870b265c9eb974737684627linux22vpnfull_triage
Tags:
n/a
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sets a file as executable
Locks files
Receives data from a server
Sets a written file as executable
DNS request
Connection attempt
Manages services
Creating a file
Sends data to a server
Creating a process from a recently created file
Changes the time when the file was created, accessed, or modified
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:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
golang obfuscated
Link:
https://www.filescan.io/uploads/6870b22c80b46be06e9f6444/reports/264cd3f3-5424-45aa-ae1f-08d2b5058139/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:
15
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/2b6f56c547be1ee984193bbb9cb613dc8810fc5a0072e3bb097001783175d85d
Behaviour
Persistence
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/8aae2cf1-579f-467f-9f0d-0671328b9e29
Behavior Graph:
Download SVG
%3 guuid=2f519636-2100-0000-6aae-aa84140b0000 pid=2836 /usr/bin/sudo guuid=d6517a38-2100-0000-6aae-aa84180b0000 pid=2840 /tmp/sample.bin guuid=2f519636-2100-0000-6aae-aa84140b0000 pid=2836->guuid=d6517a38-2100-0000-6aae-aa84180b0000 pid=2840 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/8a37cc6a-982e-4026-9197-c6f147de8a98
Result
Threat name:
Chaos
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
56 / 100
Link:
https://www.joesandbox.com/analysis/1733414
Signature
Multi AV Scanner detection for submitted file
Yara detected Chaos
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/2b6f56c547be1ee984193bbb9cb613dc8810fc5a0072e3bb097001783175d85d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2b6f56c547be1ee984193bbb9cb613dc8810fc5a0072e3bb097001783175d85d/
Threat name:
Linux.Trojan.Kaiji
Create hunting rule
Status:
Malicious
First seen:
2025-07-11 06:42:17 UTC
File Type:
ELF32 Big (Exe)
AV detection:
24 of 38 (63.16%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fnxvnrkhxypotbazho5zznqt3sebb7c2abzohoyjoaaxqmlv3boq._file
Result
Malware family:
kaiji
Create hunting rule
Score:
  10/10
Tags:
family:kaiji discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/250711-hf6jnstpx3/
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 chaos kaiji Unix.Malware.Kaiji-10002376-0
YARA:
ELF_Kaiji_Chaos_April_2024
Link:
https://app.threat.zone/submission/13db8564-715f-45b5-8be6-d2d83fe1ed71
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/2b6f56c547be1ee984193bbb9cb613dc8810fc5a0072e3bb097001783175d85d

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: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 2b6f56c547be1ee984193bbb9cb613dc8810fc5a0072e3bb097001783175d85d

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3581025/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3581029/

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