MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bf1fedba1e7390e1dfbdc9c457becad2f648225f4b47f46e73f39a0b1399e86b. 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 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bf1fedba1e7390e1dfbdc9c457becad2f648225f4b47f46e73f39a0b1399e86b
SHA3-384 hash: 65b9f4dfca6426248d18bc36dcdd1590f76bdc5af5272afd44ae1e283f55ae22fc36ac4d1bae8aa68eab24d18973a777
SHA1 hash: 8f3724105b9c2bedf7519684b0ec3b0bd203d483
MD5 hash: f7238b04094dc492ab999e2811657cb5
humanhash: venus-north-golf-blue
File name:f7238b04094dc492ab999e2811657cb5
Download: download sample
Signature Mirai
Create hunting rule
File size:1'522'956 bytes
First seen:2024-02-08 15:57:33 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 24576:Cfnxp8kJVX5PSWFB5+ulIaN4TueJv6sMgH8gBWlSZeFdgPnvh:CfoknuMesIHzWdgPnp
TLSH T152653A56FC419B61C5D096BAFB2E928933132BB8D3DF31078D149B346B9B89A0F3B541
telfhash t11e0110b285c40cfd2bc0c18d52de74275f9834fd2b48364e862efb6499039c4a219c4b
Reporter zbetcheckin
Tags:32 arm elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
96
Origin country :
FR FR
Vendor Threat Intelligence
Detection(s):
Unix.Trojan.Mirai-7100807-0
Create hunting rule

Unix.Dropper.Mirai-7135897-0
Create hunting rule

Unix.Dropper.Mirai-7135901-0
Create hunting rule

Unix.Dropper.Mirai-7135909-0
Create hunting rule

Unix.Dropper.Mirai-7135918-0
Create hunting rule

Unix.Dropper.Mirai-7135954-0
Create hunting rule

Unix.Dropper.Mirai-7136013-0
Create hunting rule

Unix.Dropper.Mirai-7136028-0
Create hunting rule

Unix.Dropper.Mirai-7136057-0
Create hunting rule

Unix.Trojan.Mirai-8025795-0
Create hunting rule

Unix.Trojan.Mirai-9858729-0
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug expand lolbin remote
Link:
https://www.filescan.io/uploads/65c4fa0e2cb3f19023f5fc90/reports/565b57ba-fbe1-4f43-8fbf-688210f77b63/overview
Result
Verdict:
MALICIOUS
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/1535f492-dd59-4aed-9777-ec1b1efdd989
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1389260
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Connects to many ports of the same IP (likely port scanning)
Drops files in suspicious directories
Executes the "crontab" command typically for achieving persistence
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Sample tries to persist itself using cron
Sample tries to persist itself using System V runlevels
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1389260 Sample: KEjYfbfZK9.elf Startdate: 08/02/2024 Architecture: LINUX Score: 88 55 xza.goweqmcsa.xyz 2->55 57 xza.goweqmcsa.xyz 156.96.155.238, 17560, 34000 VDI-NETWORKUS United States 2->57 67 Antivirus detection for dropped file 2->67 69 Antivirus / Scanner detection for submitted sample 2->69 71 Multi AV Scanner detection for submitted file 2->71 73 Connects to many ports of the same IP (likely port scanning) 2->73 9 KEjYfbfZK9.elf 2->9         started        11 udisksd dumpe2fs 2->11         started        13 udisksd dumpe2fs 2->13         started        signatures3 75 Performs DNS queries to domains with low reputation 55->75 process4 process5 15 KEjYfbfZK9.elf 9->15         started        19 KEjYfbfZK9.elf cp 9->19         started        21 KEjYfbfZK9.elf 9->21         started        file6 47 /var/www/.recoverys, ASCII 15->47 dropped 49 /etc/init.d/S99dnsconfig, POSIX 15->49 dropped 59 Drops files in suspicious directories 15->59 23 KEjYfbfZK9.elf sh 15->23         started        25 KEjYfbfZK9.elf sh 15->25         started        27 KEjYfbfZK9.elf sh 15->27         started        29 16 other processes 15->29 51 /var/www/nginx_kel, ELF 19->51 dropped signatures7 process8 process9 31 sh crontab 23->31         started        35 sh ln 25->35         started        37 sh ln 27->37         started        39 sh ln 29->39         started        41 sh ln 29->41         started        43 sh ln 29->43         started        45 13 other processes 29->45 file10 53 /var/spool/cron/crontabs/tmp.hrxL3k, ASCII 31->53 dropped 61 Sample tries to persist itself using cron 31->61 63 Executes the "crontab" command typically for achieving persistence 31->63 65 Sample tries to persist itself using System V runlevels 35->65 signatures11
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/bf1fedba1e7390e1dfbdc9c457becad2f648225f4b47f46e73f39a0b1399e86b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bf1fedba1e7390e1dfbdc9c457becad2f648225f4b47f46e73f39a0b1399e86b/
Threat name:
Linux.Trojan.Mirai
Create hunting rule
Status:
Malicious
First seen:
2024-02-08 15:58:10 UTC
File Type:
ELF32 Little (Exe)
AV detection:
17 of 23 (73.91%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=x4p63oq6ooiodx55zhcfppwk2l3eqis7jnd7i3tt6onawe4z5bvq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet:lzrd botnet persistence
Link:
https://tria.ge/reports/240208-tegppshb33/
Behaviour
Reads runtime system information
Creates/modifies Cron job
Modifies init.d
Mirai
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Mirai
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/bf1fedba1e7390e1dfbdc9c457becad2f648225f4b47f46e73f39a0b1399e86b

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:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:SUSP_XORed_Mozilla
Create hunting rule
Author:Florian Roth
Description:Detects suspicious single byte XORed keyword 'Mozilla/5.0' - it uses yara's XOR modifier and therefore cannot print the XOR key. You can use the CyberChef recipe linked in the reference field to brute force the used key.
Reference:https://gchq.github.io/CyberChef/#recipe=XOR_Brute_Force()
Rule name:SUSP_XORed_Mozilla_RID2DB4
Create hunting rule
Author:Florian Roth
Description:Detects suspicious XORed keyword - Mozilla/5.0
Reference:Internal Research
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 bf1fedba1e7390e1dfbdc9c457becad2f648225f4b47f46e73f39a0b1399e86b

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2758400/

Comments


Avatar
zbet commented on 2024-02-08 15:57:34 UTC

url : hxxp://23.224.176.63/new_a7l