MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d99d31dba21bc3f823b71baf039e14ce6b8a3cd824fb15e497dca07d736d2290. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d99d31dba21bc3f823b71baf039e14ce6b8a3cd824fb15e497dca07d736d2290
SHA3-384 hash: f36f9f6543584ecf55446d70f837015413541ae9cba6aade3a0776bf1ada5a0de10bd458355ae0343e2e7f980c374a32
SHA1 hash: 27deb2bee0ec1e4bea967c28b0bf5a4a1d5e7ed7
MD5 hash: b3fbfa9e956964848c9268459ebf98dd
humanhash: connecticut-island-comet-edward
File name:mipsel
Download: download sample
Signature Mirai
Create hunting rule
File size:196'800 bytes
First seen:2025-09-13 16:29:21 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:UJRP78J81Wxx0Crqw+aA+7e+YznX+B4TvUjskhYl6vbCZvmblhdpkoLe2s5RKuJ4:wixr2LGgkClA/16RKsYJRoKEiOuGy
TLSH T14014C50AAF610FFBD8AFDD3702E90B0635CC650722A53B753674D528F54A64B4AE3C68
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 gafgyt mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
66
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Linux.Siggen.9999-12.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.30395.LC.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-10056448-0
Create hunting rule

Unix.Trojan.Gafgyt-10056449-0
Create hunting rule

Unix.Trojan.Gafgyt-10056462-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Collects information on the CPU
Creating a file
Runs as daemon
Sets a written file as executable
Kills processes
Sets a file as executable
Launching a process
Deletes a file
Creating a process from a recently created file
Substitutes an application name
Writes files to system directory
Creates or modifies symbolic links in /init.d to set up autorun
Creates or modifies files in /init.d to set up autorun
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
bash lolbin obfuscated remote threat
Link:
https://www.filescan.io/uploads/68c59da5dbc6f5a29c437426/reports/ec5d331f-fc27-420e-b117-0efa0347f63c/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
mips
Packer:
not packed
Botnet:
unknown
Number of open files:
7
Number of processes launched:
2
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/d99d31dba21bc3f823b71baf039e14ce6b8a3cd824fb15e497dca07d736d2290
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-09-13T13:51:00Z UTC
Last seen:
2025-09-13T13:51:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Gafgyt.bl HEUR:Backdoor.Linux.Gafgyt.bj
Link:
https://opentip.kaspersky.com/d99d31dba21bc3f823b71baf039e14ce6b8a3cd824fb15e497dca07d736d2290/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/b125064d-59d1-4d01-b6d1-0f5ebd430200
Behavior Graph:
Download SVG
%3 guuid=403cb7bc-1900-0000-ea69-8f64f6090000 pid=2550 /usr/bin/sudo guuid=12496dbf-1900-0000-ea69-8f64fd090000 pid=2557 /tmp/sample.bin guuid=403cb7bc-1900-0000-ea69-8f64f6090000 pid=2550->guuid=12496dbf-1900-0000-ea69-8f64fd090000 pid=2557 execve guuid=94f89cc0-1900-0000-ea69-8f64020a0000 pid=2562 /usr/bin/dash guuid=12496dbf-1900-0000-ea69-8f64fd090000 pid=2557->guuid=94f89cc0-1900-0000-ea69-8f64020a0000 pid=2562 clone
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/1402c72d-aff4-4424-ad12-372c3665b502
Result
Threat name:
Gafgyt, Mirai
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1777044
Signature
Drops files in suspicious directories
Drops invisible ELF files
Multi AV Scanner detection for submitted file
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Yara detected Gafgyt
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1777044 Sample: mipsel.elf Startdate: 13/09/2025 Architecture: LINUX Score: 80 26 109.202.202.202, 80 INIT7CH Switzerland 2->26 28 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->28 30 2 other IPs or domains 2->30 32 Multi AV Scanner detection for submitted file 2->32 34 Yara detected Gafgyt 2->34 36 Yara detected Mirai 2->36 8 mipsel.elf dbus-daemon 2->8         started        12 dash rm 2->12         started        14 dash rm 2->14         started        signatures3 process4 file5 24 /etc/init.d/sysd, POSIX 8->24 dropped 42 Sample tries to set files in /etc globally writable 8->42 44 Drops files in suspicious directories 8->44 46 Sample tries to persist itself using System V runlevels 8->46 16 mipsel.elf sh 8->16         started        signatures6 process7 process8 18 sh cp 16->18         started        file9 22 /usr/bin/.sh, ELF 18->22 dropped 38 Drops invisible ELF files 18->38 40 Drops files in suspicious directories 18->40 signatures10
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d99d31dba21bc3f823b71baf039e14ce6b8a3cd824fb15e497dca07d736d2290/
Verdict:
Malicious
Threat:
Backdoor.Linux.Gafgyt
Link:
https://tip.neiki.dev/file/d99d31dba21bc3f823b71baf039e14ce6b8a3cd824fb15e497dca07d736d2290
Threat name:
Linux.Trojan.Gafgyt
Create hunting rule
Status:
Malicious
First seen:
2025-09-13 16:47:34 UTC
File Type:
ELF32 Little (Exe)
AV detection:
17 of 38 (44.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3gotdw5cdpb7qi5xdoxqhhquzzvyupgyet5rlzex3sqh243nekia._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery persistence
Link:
https://tria.ge/reports/250913-t4mbgsdp91/
Behaviour
Reads runtime system information
System Network Configuration Discovery
Writes file to tmp directory
Changes its process name
Enumerates running processes
Modifies init.d
Modifies rc script
Write file to user bin folder
Executes dropped EXE
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/f0779cd0-320b-4518-b2b6-42d3c66dca41
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/d99d31dba21bc3f823b71baf039e14ce6b8a3cd824fb15e497dca07d736d2290

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:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:testlumma
Create hunting rule
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 d99d31dba21bc3f823b71baf039e14ce6b8a3cd824fb15e497dca07d736d2290

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3623335/
  
Delivery method
Distributed via web download

Comments