MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8d37351feb40c8cffa43b778bc7087eb6b516b5e498244e640ab366d276d4800. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8d37351feb40c8cffa43b778bc7087eb6b516b5e498244e640ab366d276d4800
SHA3-384 hash: c794f8818fa918fd5bdbb5366cb501b5499822d2f3fe99393c23cb5f00ff1cb13ae9bc888773c75730934ddfc97aee58
SHA1 hash: be679ce82d6fa74f67234770b8d7eb3452104c0c
MD5 hash: ae68edeca454373636b0337e32bbfdbe
humanhash: eighteen-summer-iowa-potato
File name:sh4.urbotnetisass
Download: download sample
Signature Mirai
Create hunting rule
File size:176'872 bytes
First seen:2025-09-13 14:13:18 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:Dtl5U7yRboqE0rUGPdjRIxu78PuVC7yb8+DsdothnnfiW3JQ:RL/Rbo03P1RIxQ8PH+ko13JQ
TLSH T13704CF62C9645CA1D46505B478F5CFBC4F93A5A089432EFDD0ABCB74C54BE8C720ABB8
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 mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
81
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.31069.LX.BOT.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.31075.LX.BOT.UNOFFICIAL
Create hunting rule

Unix.Dropper.Mirai-7136288-0
Create hunting rule

Unix.Trojan.Mirai-7755770-0
Create hunting rule

Unix.Trojan.Mirai-9885259-0
Create hunting rule

Unix.Trojan.Gafgyt-9940653-0
Create hunting rule

Unix.Trojan.Mirai-9951087-0
Create hunting rule

Unix.Trojan.Mirai-10008934-0
Create hunting rule

Unix.Trojan.Gafgyt-6735924-0
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm busybox evasive
Link:
https://www.filescan.io/uploads/68c57c12dbc6f5a29c436124/reports/81109d8f-a0c6-46b6-96fc-7cdfc4e7bed9/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-09-13T11:24:00Z UTC
Last seen:
2025-09-13T11:24:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.gen
Link:
https://opentip.kaspersky.com/8d37351feb40c8cffa43b778bc7087eb6b516b5e498244e640ab366d276d4800/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/4db6f789-14ef-482d-9ef9-0283ab0315a2
Behavior Graph:
Download SVG
%3 guuid=ca2711f4-1800-0000-66b0-c56a56120000 pid=4694 /usr/bin/sudo guuid=bcb130f6-1800-0000-66b0-c56a5f120000 pid=4703 /tmp/sample.bin guuid=ca2711f4-1800-0000-66b0-c56a56120000 pid=4694->guuid=bcb130f6-1800-0000-66b0-c56a5f120000 pid=4703 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/98db2e87-fab9-4bf2-ad32-62757e14dae6
Result
Threat name:
Gafgyt, Mirai
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1776993
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Deletes system log files
Drops files in suspicious directories
Drops invisible ELF files
Executes the "crontab" command typically for achieving persistence
Modifies the '.bashrc' or '.bash_profile' file typically for persisting actions
Multi AV Scanner detection for submitted file
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to persist itself using cron
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Writes identical ELF files to multiple locations
Yara detected Gafgyt
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1776993 Sample: sh4.urbotnetisass.elf Startdate: 13/09/2025 Architecture: LINUX Score: 100 89 94.154.35.153, 43212 SELECTELRU Ukraine 2->89 91 109.202.202.202, 80 INIT7CH Switzerland 2->91 93 2 other IPs or domains 2->93 109 Antivirus detection for dropped file 2->109 111 Antivirus / Scanner detection for submitted sample 2->111 113 Multi AV Scanner detection for submitted file 2->113 115 2 other signatures 2->115 12 dash rm sh4.urbotnetisass.elf 2->12         started        14 udisksd dumpe2fs 2->14         started        16 udisksd dumpe2fs 2->16         started        18 36 other processes 2->18 signatures3 process4 process5 20 sh4.urbotnetisass.elf 12->20         started        file6 75 /usr/bin/uraskid, ELF 20->75 dropped 77 /root/.bashrc, ASCII 20->77 dropped 79 /root/.bash_profile, ASCII 20->79 dropped 81 13 other malicious files 20->81 dropped 119 Sample tries to set files in /etc globally writable 20->119 121 Writes identical ELF files to multiple locations 20->121 123 Drops files in suspicious directories 20->123 125 2 other signatures 20->125 24 sh4.urbotnetisass.elf sh 20->24         started        26 sh4.urbotnetisass.elf sh 20->26         started        28 sh4.urbotnetisass.elf sh 20->28         started        30 8 other processes 20->30 signatures7 process8 file9 34 sh cp 24->34         started        37 sh crontab 26->37         started        40 sh 26->40         started        42 sh cp 28->42         started        87 /etc/sedxIcFkq, POSIX 30->87 dropped 127 Sample tries to persist itself using System V runlevels 30->127 44 sh4.urbotnetisass.elf 30->44         started        46 sh cp 30->46         started        48 sh systemctl 30->48         started        50 3 other processes 30->50 signatures10 process11 file12 95 Writes identical ELF files to multiple locations 34->95 97 Drops invisible ELF files 34->97 99 Drops files in suspicious directories 34->99 83 /var/spool/cron/crontabs/tmp.bwfGpB, ASCII 37->83 dropped 101 Sample tries to persist itself using cron 37->101 103 Executes the "crontab" command typically for achieving persistence 37->103 52 sh crontab 40->52         started        55 sh grep 40->55         started        85 /usr/bin/.sh, ELF 42->85 dropped 105 Sample reads /proc/mounts (often used for finding a writable filesystem) 44->105 107 Deletes system log files 44->107 57 sh4.urbotnetisass.elf 44->57         started        59 sh4.urbotnetisass.elf 44->59         started        61 sh4.urbotnetisass.elf 44->61         started        65 7 other processes 44->65 63 systemctl systemd-sysv-install 48->63         started        signatures13 process14 signatures15 117 Executes the "crontab" command typically for achieving persistence 52->117 67 systemd-sysv-install update-rc.d 63->67         started        69 systemd-sysv-install getopt 63->69         started        71 systemd-sysv-install update-rc.d 63->71         started        process16 process17 73 update-rc.d systemctl 67->73         started       
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8d37351feb40c8cffa43b778bc7087eb6b516b5e498244e640ab366d276d4800/
Verdict:
Malicious
Threat:
Backdoor.Linux.Mirai
Link:
https://tip.neiki.dev/file/8d37351feb40c8cffa43b778bc7087eb6b516b5e498244e640ab366d276d4800
Threat name:
Linux.Exploit.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-09-13 14:14:41 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=ru3tkh7lidem76sdw54ly4eh5nvvc226jgbejzsavm3g2j3njaaa._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/250913-rjqgast1fy/
Verdict:
Malicious
Tags:
Unix.Dropper.Mirai-7136288-0
YARA:
n/a
Link:
https://app.threat.zone/submission/7d467d3b-d463-479b-9f28-55a5ccb68e94
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/8d37351feb40c8cffa43b778bc7087eb6b516b5e498244e640ab366d276d4800

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:ach_202503_elf_Mirai
Create hunting rule
Author:abuse.ch
Description:Detects Mirai 'TSource' ELF files
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:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

Web download

Mirai

elf 8d37351feb40c8cffa43b778bc7087eb6b516b5e498244e640ab366d276d4800

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3618253/
  
Delivery method
Distributed via web download

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