MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bc56faa396b8b6f6487e925a19c3cfa0a1daeaa36e774615db56a7664fa7ad4d. 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: 7


Intelligence 7 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bc56faa396b8b6f6487e925a19c3cfa0a1daeaa36e774615db56a7664fa7ad4d
SHA3-384 hash: 8f816ac763c9b7faa6102c8d37bcbb332be7337cac4b27b1ba9b60f5ab7728acf6228e5d991fd6781f67daa77c75c4d0
SHA1 hash: 913c4d9c15123a189e6a7107c59198f2c429cb96
MD5 hash: 45aea77d76cf4f6424b39576de98d6ed
humanhash: texas-football-leopard-fillet
File name:xWr
Download: download sample
Signature Mirai
Create hunting rule
File size:83'664 bytes
First seen:2026-07-21 22:42:25 UTC
Last seen:2026-07-22 17:09:01 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:+knXPQEE2PvaYUIlkvkCWd3cbqDdGgbOHB2Nk6z8VTuC5llGviHe1PkZdz:95EwvNgy0ClbOHB2Nk6z8V1AWe1kd
TLSH T1A983086ABD419F05D4D526BAFF1E9289335357BCE3EE7102DE142B2527CAA1B0F3A401
telfhash t16ee061b64a4185fc93e44559d05f711a430ce052051045d8bafc5e1fd173886760e40a
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
2
# of downloads :
101
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.Siggen.13801.67214974.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Manages services
Creating a file
Sends data to a server
Collects information on the RAM
Connection attempt
Receives data from a server
Sets a written file as executable
Kills processes
Runs as daemon
Collects information on the CPU
Writes symbolic links to system directory
Creates or modifies files in /cron to set up autorun
Creates or modifies files in /init.d to set up autorun
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
rust
Link:
https://www.filescan.io/uploads/6a5ff5e689419e40a50badbd/reports/4ca2a3bb-1157-4edf-a220-bd92bf4d9c6d/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-07-21T20:51:00Z UTC
Last seen:
2026-07-22T18:35:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/bc56faa396b8b6f6487e925a19c3cfa0a1daeaa36e774615db56a7664fa7ad4d/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/ba4dc64b-6f88-4ff2-8116-01baf5d7c3d8
Behavior Graph:
Download SVG
%3 guuid=7c5369c0-1800-0000-dcdf-f4d176080000 pid=2166 /usr/bin/sudo guuid=4f9d37c4-1800-0000-dcdf-f4d17f080000 pid=2175 /tmp/sample.bin guuid=7c5369c0-1800-0000-dcdf-f4d176080000 pid=2166->guuid=4f9d37c4-1800-0000-dcdf-f4d17f080000 pid=2175 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/c108fdec-22c7-4835-b22f-728732f06736
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1946179
Signature
Multi AV Scanner detection for submitted file
Protects files from modification
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill multiple processes (SIGKILL)
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: 1946179 Sample: xWr.elf Startdate: 22/07/2026 Architecture: LINUX Score: 72 46 5.231.70.61, 3512, 51364 DATAFORESTDE Germany 2->46 48 94.154.43.102, 40488, 41298, 5632 CDNEXTGB Turkey 2->48 50 Multi AV Scanner detection for submitted file 2->50 10 xWr.elf 2->10         started        12 systemd snapd-env-generator 2->12         started        14 systemd snapd-env-generator 2->14         started        16 8 other processes 2->16 signatures3 process4 process5 18 xWr.elf 10->18         started        process6 20 xWr.elf 18->20         started        signatures7 52 Sample tries to kill multiple processes (SIGKILL) 20->52 54 Sample tries to persist itself using cron 20->54 56 Sample tries to persist itself using System V runlevels 20->56 23 xWr.elf 20->23         started        27 xWr.elf chattr 20->27         started        29 xWr.elf chattr 20->29         started        31 29 other processes 20->31 process8 file9 40 /etc/rc.local, POSIX 23->40 dropped 42 /etc/crontab, ASCII 23->42 dropped 44 /etc/cron.d/crond, ASCII 23->44 dropped 60 Sample tries to set files in /etc globally writable 23->60 62 Sample reads /proc/mounts (often used for finding a writable filesystem) 23->62 64 Sample tries to persist itself using cron 23->64 66 Sample tries to persist itself using System V runlevels 23->66 33 xWr.elf systemctl 23->33         started        35 xWr.elf systemctl 23->35         started        68 Protects files from modification 27->68 70 Sample tries to kill multiple processes (SIGKILL) 31->70 37 xWr.elf 31->37         started        signatures10 process11 signatures12 58 Sample tries to kill multiple processes (SIGKILL) 37->58
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/bc56faa396b8b6f6487e925a19c3cfa0a1daeaa36e774615db56a7664fa7ad4d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bc56faa396b8b6f6487e925a19c3cfa0a1daeaa36e774615db56a7664fa7ad4d/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-07-21 22:43:38 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=xrlpvi4wxc3pmsd6sjnbtq6pucq5v2vdnz3umfo3k2twmt5hvvgq._file
Result
Malware family:
n/a
Score:
  6/10
Tags:
antivm discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/260721-2mz51sga58/
Behaviour
Reads runtime system information
Checks CPU configuration
Creates/modifies Cron job
Enumerates running processes
Modifies rc script
Modifies systemd
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/bc56faa396b8b6f6487e925a19c3cfa0a1daeaa36e774615db56a7664fa7ad4d

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:Linux_Generic_Threat_0ea505fa
Create hunting rule
Author:Elastic Security
Rule name:TH_Generic_MassHunt_Linux_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Generic Linux malware mass-hunt rule - 2026
Reference:https://cyfare.net/
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 bc56faa396b8b6f6487e925a19c3cfa0a1daeaa36e774615db56a7664fa7ad4d

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3889862/
  
Delivery method
Distributed via web download

Comments