MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1a64e7866a0ce19079d8372710c74f5bd3f5f1d99a5ec45b57736a592458d937. 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: 8


Intelligence 8 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1a64e7866a0ce19079d8372710c74f5bd3f5f1d99a5ec45b57736a592458d937
SHA3-384 hash: 49f3dac17a20d6f0db636b539dc185a422b67ee7fe7996956e26f7e8274854082b663f25c73f018dab840237802e4644
SHA1 hash: 460e50efa86684b4c50945ef6e76ef86e6909512
MD5 hash: c0b0477b239fb2f8bf0e95f085035444
humanhash: arizona-king-golf-maryland
File name:katrina
Download: download sample
Signature Mirai
Create hunting rule
File size:155'666 bytes
First seen:2025-07-12 05:09:38 UTC
Last seen:2025-07-13 02:52:39 UTC
File type: elf
MIME type:application/x-executable
ssdeep 3072:1N7MTUc53sr19Ptc1Yb6nyHjWn9Ey7admp/rtBLK5T5yNb:1p7xNtSYIyHaemp/rtBLK5T5yNb
TLSH T14BE3CB69F406DB67E197523121CEEF227D305BD137DAB12672B136B5ADB31832812E8C
telfhash t12e316522943546192fb3a928acbd56b315222b2323597f71af26c5cc49370f1e93de0f
Magika elf
Reporter abuse_ch
Tags:elf gafgyt mirai

Intelligence

File Origin
# of uploads :
2
# of downloads :
18
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.29325.LC.Pl.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Linux.Mirai-81.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.29052.TSource.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-6981989-0
Create hunting rule

Unix.Dropper.Mirai-7135944-0
Create hunting rule

Unix.Dropper.Mirai-7136018-0
Create hunting rule

Unix.Dropper.Mirai-7136031-0
Create hunting rule

Unix.Dropper.Mirai-7139229-0
Create hunting rule

Unix.Downloader.Mirai-7340346-0
Create hunting rule

Unix.Trojan.Gafgyt-7782058-0
Create hunting rule

Verdict:
Clean
Score:
82.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6871ee48900df8e7f86a0868linux22vpnfull_triage
Tags:
n/a
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/4658ec39-76aa-4b4b-963b-f30b04e58031
Behavior Graph:
Download SVG
%3 guuid=f3902b7f-1d00-0000-b837-fb6069090000 pid=2409 /usr/bin/sudo guuid=57786981-1d00-0000-b837-fb6071090000 pid=2417 /tmp/sample.bin guuid=f3902b7f-1d00-0000-b837-fb6069090000 pid=2409->guuid=57786981-1d00-0000-b837-fb6071090000 pid=2417 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/1f414626-063d-46ef-b3dd-00a369e0b687
Result
Threat name:
Gafgyt, Mirai
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1734482
Signature
Antivirus / Scanner detection for submitted sample
Connects to many ports of the same IP (likely port scanning)
Contains symbols with names commonly found in malware
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Opens /proc/net/* files useful for finding connected devices and routers
Sample tries to kill multiple processes (SIGKILL)
Terminates several processes with shell command 'killall'
Yara detected Gafgyt
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1734482 Sample: katrina.elf Startdate: 12/07/2025 Architecture: LINUX Score: 100 58 206.123.128.67, 52858, 52860, 52862 LEASEWEB-USA-NYC-11US United States 2->58 60 gay.energy 2->60 62 daisy.ubuntu.com 2->62 66 Malicious sample detected (through community Yara rule) 2->66 68 Antivirus / Scanner detection for submitted sample 2->68 70 Multi AV Scanner detection for submitted file 2->70 72 4 other signatures 2->72 9 katrina.elf 2->9         started        12 xfce4-session xfwm4 2->12         started        14 xfce4-session 2->14         started        signatures3 process4 signatures5 74 Opens /proc/net/* files useful for finding connected devices and routers 9->74 16 katrina.elf 9->16         started        19 katrina.elf sh 9->19         started        21 katrina.elf 9->21         started        23 katrina.elf 9->23         started        process6 signatures7 64 Sample tries to kill multiple processes (SIGKILL) 16->64 25 katrina.elf sh 16->25         started        27 katrina.elf sh 16->27         started        29 katrina.elf sh 16->29         started        41 55 other processes 16->41 31 sh wget 19->31         started        33 sh chmod 19->33         started        35 sh sh 19->35         started        37 sh rm 19->37         started        39 katrina.elf 21->39         started        process8 process9 43 sh killall 25->43         started        46 sh killall 27->46         started        48 sh killall 29->48         started        50 sh killall 41->50         started        52 sh killall 41->52         started        54 sh killall 41->54         started        56 52 other processes 41->56 signatures10 76 Terminates several processes with shell command 'killall' 43->76
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/1a64e7866a0ce19079d8372710c74f5bd3f5f1d99a5ec45b57736a592458d937
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1a64e7866a0ce19079d8372710c74f5bd3f5f1d99a5ec45b57736a592458d937/
Threat name:
Linux.Backdoor.Gafgyt
Create hunting rule
Status:
Malicious
First seen:
2025-07-12 05:10:23 UTC
File Type:
ELF32 Big (Exe)
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=djsopbtkbtqza6oyg4trbr2plpj7l4oztjpmiw2xonvfsjcy3e3q._file
Result
Malware family:
gafgyt
Create hunting rule
Score:
  10/10
Tags:
family:gafgyt linux
Link:
https://tria.ge/reports/250712-ftte6ayky8/
Verdict:
Malicious
Tags:
trojan gafgyt Unix.Trojan.Mirai-6981989-0
YARA:
Linux_Trojan_Gafgyt_28a2fe0c Linux_Gafgyt_May_2024
Link:
https://app.threat.zone/submission/0897d6d9-a71c-4f69-8243-3fe2c22d25f6
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/1a64e7866a0ce19079d8372710c74f5bd3f5f1d99a5ec45b57736a592458d937

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:Linux_Gafgyt_Generic
Create hunting rule
Author:albertzsigovits
Description:Generic Approach to Mirai/Gafgyt samples
Rule name:Linux_Trojan_Gafgyt_28a2fe0c
Create hunting rule
Author:Elastic Security
Rule name:Mal_LNX_Gafgyt_Botnet_ELF
Create hunting rule
Author:Phatcharadol Thangplub
Description:Use to detect Gafgyt botnet, and there variants.
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
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 1a64e7866a0ce19079d8372710c74f5bd3f5f1d99a5ec45b57736a592458d937

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3576539/
  
Delivery method
Distributed via web download

Comments