MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 40cf6d42aae4f489f9f4f57fb348fcbc2dfbcb67d479f7e2c4fba6f59e2fba8e. 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


Mirai


Vendor detections: 10


Intelligence 10 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 40cf6d42aae4f489f9f4f57fb348fcbc2dfbcb67d479f7e2c4fba6f59e2fba8e
SHA3-384 hash: 3e314fca7d335d160ee343e3c159a6fcd0781f38600baa3a9808ffdd84d2e19a86c27085ebf90a006118070590838565
SHA1 hash: df7b6fb024bb0fe45f27728734fc4b239783851b
MD5 hash: 8e9564b5c785cf896da51856fce05f5d
humanhash: moon-eighteen-seven-utah
File name:putita.arm5
Download: download sample
Signature Mirai
Create hunting rule
File size:136'836 bytes
First seen:2026-08-25 20:26:21 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:bJWQq88pVB/WF4UffD8H+ybvscrXMehpfKqznKS6pTXXYiNLLjkY:tY88pngNfDQ+QsynfKqzKS6xYiNXIY
TLSH T15CD3295AF890DF62C6C026BAFB5D528C33531BB8C2DAB106CD145F3537EB95A0E3A542
Magika elf
Reporter abuse_ch
Tags:elf mirai upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 4f634ca23ee5b0824f2c91d3c46771c2e0cd926b7f8a1335d7c758a1a903caf7
File size (compressed) :65'348 bytes
File size (de-compressed) :136'836 bytes
Format:linux/arm
Packed file: 4f634ca23ee5b0824f2c91d3c46771c2e0cd926b7f8a1335d7c758a1a903caf7

Intelligence

File Origin
# of uploads :
1
# of downloads :
42
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.Mirai.10742.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Changes the time when the file was created, accessed, or modified
Opens a port
Creating a file
Launching a process
Connection attempt
Sets a written file as executable
Runs as daemon
Creates or modifies symbolic links
Changes access rights for a written file
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Writes files to system directory
Deleting of the original file
Creates or modifies files in /init.d to set up autorun
Creates or modifies symbolic links in /init.d to set up autorun
Creates or modifies files to set up autorun
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
gcc masquerade mirai rust
Link:
https://www.filescan.io/uploads/6a8dfaa01248c1f5b85f9a3c/reports/376470de-68a4-45c5-9dd5-c62983a293d7/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
UPX
Botnet:
unknown
Number of open files:
52
Number of processes launched:
20
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/40cf6d42aae4f489f9f4f57fb348fcbc2dfbcb67d479f7e2c4fba6f59e2fba8e
Behaviour
Persistence
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-08-25T18:22:00Z UTC
Last seen:
2026-08-25T18:57:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/40cf6d42aae4f489f9f4f57fb348fcbc2dfbcb67d479f7e2c4fba6f59e2fba8e/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/f3b065d4-7de3-490a-acf6-75e828559b72
Behavior Graph:
Download SVG
%3 guuid=ed9a716f-1a00-0000-459c-041312080000 pid=2066 /usr/bin/sudo guuid=39660573-1a00-0000-459c-041319080000 pid=2073 /tmp/sample.bin guuid=ed9a716f-1a00-0000-459c-041312080000 pid=2066->guuid=39660573-1a00-0000-459c-041319080000 pid=2073 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0e0f0ee9-228f-4db0-a5c4-ce81c44781c1
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/40cf6d42aae4f489f9f4f57fb348fcbc2dfbcb67d479f7e2c4fba6f59e2fba8e
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/40cf6d42aae4f489f9f4f57fb348fcbc2dfbcb67d479f7e2c4fba6f59e2fba8e/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-08-25 20:27:18 UTC
File Type:
ELF32 Little (SO)
AV detection:
5 of 36 (13.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=idhw2qvk4t2it6pu6v73gsh4xqw7xs3h2r47pywe7otplhrpxkha._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion execution persistence privilege_escalation
Link:
https://tria.ge/reports/260825-y8hajsvydw/
Behaviour
Changes its process name
Modifies Bash startup script
Creates/modifies Cron job
Creates/modifies environment variables
Modifies init.d
Modifies rc script
Modifies systemd
Deletes itself
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/40cf6d42aae4f489f9f4f57fb348fcbc2dfbcb67d479f7e2c4fba6f59e2fba8e

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:elf_arm_mips_ko_so
Create hunting rule
Rule name:ELF_IoT_Persistence_Hunt
Create hunting rule
Author:4r4
Description:Hunts for ELF files with persistence and download capabilities
Rule name:ELF_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
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

Mirai

elf 4f634ca23ee5b0824f2c91d3c46771c2e0cd926b7f8a1335d7c758a1a903caf7

Mirai

elf 40cf6d42aae4f489f9f4f57fb348fcbc2dfbcb67d479f7e2c4fba6f59e2fba8e

(this sample)

  
Dropped by
SHA256 4f634ca23ee5b0824f2c91d3c46771c2e0cd926b7f8a1335d7c758a1a903caf7
  
URLhaus
https://urlhaus.abuse.ch/url/3892139/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 b1e9b249a922958e8dd3af3b0b920e22
  
URLhaus
https://urlhaus.abuse.ch/url/3892132/

Comments