MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4272a226592bdfc55e3e5759932d98744613dd1eced8f9137af9f453154ea999. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4272a226592bdfc55e3e5759932d98744613dd1eced8f9137af9f453154ea999
SHA3-384 hash: 67e311160b065dfed5ca61adbb036ed9bb99c28907bf0972ff14520d114ed2347b229568c56f3543d06ab41c0df01956
SHA1 hash: cef6995efab14e02d81ba9fbfdec5713952921d3
MD5 hash: 9fea77dad8dee58dfb72b6e2ee01499e
humanhash: tennis-eighteen-jig-freddie
File name:linux_mipsel_softfloat
Download: download sample
Signature Kaiji
Create hunting rule
File size:1'478'536 bytes
First seen:2025-08-14 21:06:45 UTC
Last seen:2025-08-15 00:15:22 UTC
File type: elf
MIME type:application/x-executable
ssdeep 24576:jXniMOOPydE2Aoaz+QyhNcG8Lw8jiCoEucY91wWHwc5dfoPnvR3:jX3OOqa2ScHNQK91wWHjxoPB
TLSH T1A3653364439D79FFCA3D447CC1394A54EC0F6F24110CEBFFF60D492A6A47A5A8AA049E
Magika elf
Reporter abuse_ch
Tags:elf kaiji UPX
File size (compressed) :1'478'536 bytes
File size (de-compressed) :5'898'240 bytes
Format:linux/mipsel
Unpacked file: 593893089b8cdda6260ecde16a45df9274ae57bfad167d637d348e9f7fc7641c

Intelligence

File Origin
# of uploads :
3
# of downloads :
62
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Other.Malware-gen.59733497.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sends data to a server
Creating a file
Manages services
Sets a written file as executable
Changes the time when the file was created, accessed, or modified
Receives data from a server
Kills processes
Launching a process
Connection attempt
Sets a file as executable
Locks files
Creating a process from a recently created file
DNS request
Writes files to system subdirectory
Creates or modifies files in /init.d to set up autorun
Performs a bruteforce attack in the network
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/d60669ea-45c4-4afe-b9d2-05cc3699cd70
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
52 / 100
Link:
https://www.joesandbox.com/analysis/1757453
Signature
Multi AV Scanner detection for submitted file
Sample is packed with UPX
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/4272a226592bdfc55e3e5759932d98744613dd1eced8f9137af9f453154ea999
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4272a226592bdfc55e3e5759932d98744613dd1eced8f9137af9f453154ea999/
Verdict:
Malicious
Threat:
HEUR:Trojan.Linux.Chaos
Link:
https://tip.neiki.dev/file/4272a226592bdfc55e3e5759932d98744613dd1eced8f9137af9f453154ea999
Threat name:
Linux.Trojan.Egairtigado
Create hunting rule
Status:
Malicious
First seen:
2025-08-14 21:09:43 UTC
File Type:
ELF32 Little (Exe)
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ijzkejszfpp4kxr6k5mzglmyordbhxi6z3mpse327h2fgfkovgmq._file
Result
Malware family:
kaiji
Create hunting rule
Score:
  10/10
Tags:
family:kaiji defense_evasion discovery persistence privilege_escalation upx
Link:
https://tria.ge/reports/250814-z1hrsa1tdw/
Behaviour
GoLang User-Agent
Enumerates kernel/hardware configuration
Reads runtime system information
System Network Configuration Discovery
Enumerates running processes
Modifies init.d
Modifies systemd
Executes dropped EXE
Modifies Watchdog functionality
Kaiji
Kaiji family
kaiji_chaosbot
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/c77ec9ac-04ed-4b66-9842-62bd318a968e
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/4272a226592bdfc55e3e5759932d98744613dd1eced8f9137af9f453154ea999

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:SUSP_ELF_LNX_UPX_Compressed_File
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a suspicious ELF binary with UPX compression
Reference:Internal Research
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:upx_packed_elf_v1
Create hunting rule
Author:RandomMalware

File information

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

Web download

Kaiji

elf 4272a226592bdfc55e3e5759932d98744613dd1eced8f9137af9f453154ea999

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3603565/
  
Delivery method
Distributed via web download

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