MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99ffa905d34dcfbbcc2042d08e9374446a610d0a8a027dee6f35cb9447a23f35. 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: 11


Intelligence 11 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 99ffa905d34dcfbbcc2042d08e9374446a610d0a8a027dee6f35cb9447a23f35
SHA3-384 hash: fd07f6fa18d0bd800801eaf9beda8a046517bf49d41c1814ccb2028ac957d7f55237472ded8aed2612fd72c202eb9eda
SHA1 hash: 877c933c2c60553e5efcab85e736e776b65d5dfa
MD5 hash: beac8f38aa88e554ac1d95575c7a0a4d
humanhash: cardinal-georgia-blossom-vegan
File name:arm5.uhavenobotsxd
Download: download sample
Signature Mirai
Create hunting rule
File size:91'348 bytes
First seen:2025-11-22 04:42:05 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:4dJhsyCj3o8EIE55dxSfHVpEZBj/D3DJoLemA:4dJhM3FW5X2HVC/rDr
TLSH T168934A52BD81CA12C5C562B7FB1E428D772753FCD3EA32038D226F61638A96B0E7B541
telfhash t19c41cefa8b960acc77d5d38492cf602d4eee31a95b052566ca5d8b0fc1d36c0b15e83b
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 :
82
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.30455.LC.BadVar.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-10001386-0
Create hunting rule

Unix.Trojan.Mirai-10010119-0
Create hunting rule

Unix.Trojan.Mirai-10010127-0
Create hunting rule

Unix.Trojan.Mirai-10017351-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm mirai rust
Link:
https://www.filescan.io/uploads/69213f2ef96b58f0dc7fc981/reports/bd7070d1-5ffe-4bb6-b658-df7b8a685fa4/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-11-22T02:53:00Z UTC
Last seen:
2025-11-22T03:53:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/99ffa905d34dcfbbcc2042d08e9374446a610d0a8a027dee6f35cb9447a23f35/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/9246d8d1-b644-4562-abc0-da166adb6d32
Behavior Graph:
Download SVG
%3 guuid=bb0b20a9-1900-0000-c669-7bdeb40c0000 pid=3252 /usr/bin/sudo guuid=8ea721ab-1900-0000-c669-7bdeba0c0000 pid=3258 /tmp/sample.bin guuid=bb0b20a9-1900-0000-c669-7bdeb40c0000 pid=3252->guuid=8ea721ab-1900-0000-c669-7bdeba0c0000 pid=3258 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b8da8b09-c6e7-4bca-957b-3f9482de0eb5
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1818994
Signature
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 kill multiple processes (SIGKILL)
Sample tries to persist itself using /etc/profile
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1818994 Sample: arm5.uhavenobotsxd.elf Startdate: 22/11/2025 Architecture: LINUX Score: 88 61 94.154.35.153, 59724, 6969 SELECTELRU Ukraine 2->61 63 109.202.202.202, 80 INIT7CH Switzerland 2->63 65 4 other IPs or domains 2->65 75 Multi AV Scanner detection for submitted file 2->75 10 arm5.uhavenobotsxd.elf 2->10         started        13 dash rm 2->13         started        15 dash rm 2->15         started        signatures3 process4 signatures5 79 Sample reads /proc/mounts (often used for finding a writable filesystem) 10->79 17 arm5.uhavenobotsxd.elf 10->17         started        process6 file7 49 /var/spool/cron/root, ASCII 17->49 dropped 51 /var/spool/cron/crontabs/root, ASCII 17->51 dropped 53 /root/.bashrc, ASCII 17->53 dropped 55 6 other malicious files 17->55 dropped 67 Sample tries to set files in /etc globally writable 17->67 69 Sample tries to persist itself using /etc/profile 17->69 71 Drops files in suspicious directories 17->71 73 3 other signatures 17->73 21 arm5.uhavenobotsxd.elf sh 17->21         started        23 arm5.uhavenobotsxd.elf sh 17->23         started        25 arm5.uhavenobotsxd.elf 17->25         started        28 6 other processes 17->28 signatures8 process9 signatures10 30 sh crontab 21->30         started        34 sh 21->34         started        36 sh cp 23->36         started        77 Sample tries to kill multiple processes (SIGKILL) 25->77 38 arm5.uhavenobotsxd.elf sh 28->38         started        40 arm5.uhavenobotsxd.elf sh 28->40         started        42 arm5.uhavenobotsxd.elf sh 28->42         started        44 6 other processes 28->44 process11 file12 57 /var/spool/cron/crontabs/tmp.VYLyrF, ASCII 30->57 dropped 83 Sample tries to persist itself using cron 30->83 85 Executes the "crontab" command typically for achieving persistence 30->85 46 sh crontab 34->46         started        59 /usr/bin/.sh, ELF 36->59 dropped 87 Drops invisible ELF files 36->87 89 Drops files in suspicious directories 36->89 signatures13 process14 signatures15 81 Executes the "crontab" command typically for achieving persistence 46->81
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/99ffa905d34dcfbbcc2042d08e9374446a610d0a8a027dee6f35cb9447a23f35
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/99ffa905d34dcfbbcc2042d08e9374446a610d0a8a027dee6f35cb9447a23f35/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-11-22 04:42:24 UTC
File Type:
ELF32 Little (Exe)
AV detection:
12 of 36 (33.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=th72sbotjxh3xtbailii5e3uirvgcdikribh33tpgxfzir5ch42q._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai
Link:
https://tria.ge/reports/251122-fbvkhadk21/
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-10001386-0
YARA:
n/a
Link:
https://app.threat.zone/submission/09ab3bea-b64c-4245-9c98-89f171ad7f68
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/99ffa905d34dcfbbcc2042d08e9374446a610d0a8a027dee6f35cb9447a23f35

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:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:Linux_Generic_Threat_d94e1020
Create hunting rule
Author:Elastic Security
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 99ffa905d34dcfbbcc2042d08e9374446a610d0a8a027dee6f35cb9447a23f35

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3686383/
  
Delivery method
Distributed via web download

Comments