MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81bfa711967bb0fbc4603c0a3852932dfe8ea2a4246c642b9a1af35803d9cb77. 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: 6


Intelligence 6 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81bfa711967bb0fbc4603c0a3852932dfe8ea2a4246c642b9a1af35803d9cb77
SHA3-384 hash: 90514db190bc75e03c5f737b6305b42af7486603ffa89867894b23f71919d97c843eac795494f25a4c475828b81fc6be
SHA1 hash: 00128810745477e158b3ee7aeb34512ccf31c42a
MD5 hash: 714e071373e45f0a8b2f52074a1819f8
humanhash: cup-fish-kilo-fourteen
File name:zersh4
Download: download sample
Signature Mirai
Create hunting rule
File size:46'260 bytes
First seen:2025-12-24 15:33:32 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 768:marSJe+1jCHx05q6BQbwPNf0mIlpAL6jUzCeoIUmC2TT:marSJUHK5TBQUp0moOmUzG5mC2TT
TLSH T1E1237D36C43DAD94D858A274B4308E785B53B004D6D71FFBAA4586B08083EACFA5D7F8
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 :
69
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.31075.LX.BOT.UNOFFICIAL
Create hunting rule

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

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

Result
Gathering data
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/b70399bc-0ea5-44e0-a20c-5f2344d9a288
Behavior Graph:
Download SVG
%3 guuid=5d787825-1a00-0000-e696-373d0e090000 pid=2318 /usr/bin/sudo guuid=c6929c28-1a00-0000-e696-373d15090000 pid=2325 /tmp/sample.bin guuid=5d787825-1a00-0000-e696-373d0e090000 pid=2318->guuid=c6929c28-1a00-0000-e696-373d15090000 pid=2325 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/0e969980-2341-4ce1-a7a5-b7e39268ea82
Result
Threat name:
n/a
Detection:
malicious
Classification:
n/a
Score:
48 / 100
Link:
https://www.joesandbox.com/analysis/1838909
Signature
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1838909 Sample: zersh4.elf Startdate: 24/12/2025 Architecture: LINUX Score: 48 14 206.189.99.30, 39691, 42890 DIGITALOCEAN-ASNUS United States 2->14 16 seris.gd 2->16 18 Multi AV Scanner detection for submitted file 2->18 8 zersh4.elf 2->8         started        signatures3 process4 process5 10 zersh4.elf 8->10         started        process6 12 zersh4.elf 10->12         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/81bfa711967bb0fbc4603c0a3852932dfe8ea2a4246c642b9a1af35803d9cb77
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/81bfa711967bb0fbc4603c0a3852932dfe8ea2a4246c642b9a1af35803d9cb77/
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qg72oemwpoypxrdahqfdquutfx7i5iveerwgik42dlzvqa6zzn3q._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/251224-szlcysfz9b/
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-9885259-0
YARA:
n/a
Link:
https://app.threat.zone/submission/ac118310-d0d8-4997-a9b7-7c4f778373a7
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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 81bfa711967bb0fbc4603c0a3852932dfe8ea2a4246c642b9a1af35803d9cb77

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3739404/
  
Delivery method
Distributed via web download

Comments