MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 63cb4b4816bcfa472ca033a570740921f2958172cca5a7cdda1a9228a8fde8e9. 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
| SHA256 hash: | 63cb4b4816bcfa472ca033a570740921f2958172cca5a7cdda1a9228a8fde8e9 |
|---|---|
| SHA3-384 hash: | e6e95f953cabce4d093d5284529cfa4ef96427a048d511c53ce2acb0449ae694d5eff72713df1b26d33f3e4bcb7e0c8f |
| SHA1 hash: | 7d770f10cf381dc8f8ce95e46801c7814e83886e |
| MD5 hash: | 26809397404f9754c3ffb5a8347bc392 |
| humanhash: | romeo-early-nebraska-cup |
| File name: | linux_386 |
| Download: | download sample |
| Signature | Kaiji |
| File size: | 5'251'072 bytes |
| First seen: | 2025-07-11 06:40:23 UTC |
| Last seen: | 2025-10-29 15:13:34 UTC |
| File type: | elf |
| MIME type: | application/x-executable |
| ssdeep | 49152:E33d0lGt6UHcFL7Rn2o03wiEhiDmzzd/9sARlBs/00Cpfx9a9uN3p9hW16klbU6V:E33GlbU8FwmzzRDZ9mMqRV |
| TLSH | T1B6364A10FECB54F6D5031D3044ABE2AF67316D064B25EB83EA047F6AF97B6A51D32209 |
| telfhash | t1b9c2ce73199da8fc67f0851387ab7120cfe6e03726d0297159f6b8c0e673d53a626878 |
| 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 |
UPX unpacked
This file is the unpacked version of a file that has been packed with UPX. Below is furhter information about the parent (compressed) file.
| File size (compressed) : | 1'610'836 bytes |
|---|---|
| File size (de-compressed) : | 5'251'072 bytes |
| Format: | linux/i386 |
| Packed file: | ec523cba48fe94a45da78c463e32f252fd095fec340a09d32aca0495599e961d |
Intelligence
File Origin
# of uploads :
2
# of downloads :
14
Origin country :
DEVendor Threat Intelligence
Verdict:
Malicious
Score:
70%
Link:
Tags:
malware
Result
Verdict:
Malware
Maliciousness:
Behaviour
DNS request
Locks files
Changes the time when the file was created, accessed, or modified
Receives data from a server
Creating a file
Manages services
Sets a written file as executable
Connection attempt
Launching a process
Sends data to a server
Creating a process from a recently created file
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:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
golang obfuscated
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
19
Number of processes launched:
15
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
Behaviour
Persistence
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Status:
terminated
Behavior Graph:
Verdict:
Suspicious
Result
Threat name:
Chaos
Detection:
malicious
Classification:
spre.troj.evad
Score:
76 / 100
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
Uses known network protocols on non-standard ports
Yara detected Chaos
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
ELF
Threat name:
Linux.Trojan.Multiverze
Status:
Malicious
First seen:
2025-07-11 06:41:30 UTC
File Type:
ELF32 Little (Exe)
AV detection:
25 of 37 (67.57%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
kaiji
Score:
10/10
Tags:
family:kaiji defense_evasion discovery execution linux persistence privilege_escalation ransomware rootkit
Behaviour
GoLang User-Agent
Reads runtime system information
Abuse Elevation Control Mechanism: Sudo and Sudo Caching
Creates/modifies Cron job
Executes dropped EXE
Loads a kernel module
Renames multiple (1040) files with added filename extension
Kaiji
Kaiji family
kaiji_chaosbot
Malware Config
C2 Extraction:
154.201.82.47:808
Verdict:
Malicious
Tags:
trojan chaos kaiji Unix.Trojan.Kaiji-9975495-0
YARA:
Linux_Trojan_Kaiji_91091be3 ELF_Kaiji_Chaos_April_2024
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.30
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 |
|---|---|
| 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 |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| Rule name: | DetectGoMethodSignatures |
|---|---|
| Author: | Wyatt Tauber |
| Description: | Detects Go method signatures in unpacked Go binaries |
| Rule name: | Detect_Go_GOMAXPROCS |
|---|---|
| Author: | Obscurity Labs LLC |
| Description: | Detects Go binaries by the presence of runtime.GOMAXPROCS in the runtime metadata |
| Rule name: | enterpriseapps2 |
|---|---|
| Author: | Tim Brown @timb_machine |
| Description: | Enterprise apps |
| Rule name: | F01_s1ckrule |
|---|---|
| Author: | s1ckb017 |
| Rule name: | GoBinTest |
|---|
| Rule name: | golang |
|---|
| Rule name: | golang_binary_string |
|---|---|
| Description: | Golang strings present |
| Rule name: | identity_golang |
|---|---|
| Author: | Eric Yocam |
| Description: | find Golang malware |
| Rule name: | Linux_Generic_Threat_a40aaa96 |
|---|---|
| Author: | Elastic Security |
| Rule name: | Linux_Trojan_Kaiji_91091be3 |
|---|---|
| Author: | Elastic Security |
| Rule name: | MD5_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for MD5 constants |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | ProgramLanguage_Golang |
|---|---|
| Author: | albertzsigovits |
| Description: | Application written in Golang programming language |
| Rule name: | RANSOMWARE |
|---|---|
| Author: | ToroGuitar |
| Rule name: | RIPEMD160_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for RIPEMD-160 constants |
| Rule name: | setsockopt |
|---|---|
| Author: | Tim Brown @timb_machine |
| Description: | Hunts for setsockopt() red flags |
| Rule name: | SHA1_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA1 constants |
| Rule name: | SHA512_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA384/SHA512 constants |
| Rule name: | unixredflags3 |
|---|---|
| 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
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
| ID | Title | Severity |
|---|---|---|
| CHECK_PIE | Missing Position-Independent Executable (PIE) Protection | high |
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