MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31e77cc535cf8b296d879f2f41825f8b73279556c005d6345c87e4df1dffddd3. 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: 8


Intelligence 8 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 31e77cc535cf8b296d879f2f41825f8b73279556c005d6345c87e4df1dffddd3
SHA3-384 hash: 3a0ff401fb7d82e308df34ffb06175e83e2555ea4bde6aa2dbeb395c480e338adac0e5a2bd6d55a7a1a7953c050a3d39
SHA1 hash: f004d8d71b868a986566935de0c3b40642389c6f
MD5 hash: 1684f3632f584d5e839de0c247acc281
humanhash: earth-fourteen-pizza-aspen
File name:nklarm7
Download: download sample
Signature Mirai
Create hunting rule
File size:98'144 bytes
First seen:2025-12-26 17:48:34 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:CdnmGWaiLwq0U8Hp77gq5tLitUX42sxl+60owmsoREFQ6bq3cNlGJip5027+xZAI:IY+SUX1sjVwmscEFQ6buW577+xmq2TA
TLSH T1DBA3188AF8819B25C5D522BEFE1E518D335357B8E3EF7202DD245B14778A82B0E7B601
telfhash t131d02bc1ca2ad58ef9f5a384aeec13808d7773fc7b070421846c6a4ad012c92312d984
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
32
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.31075.LX.BOT.UNOFFICIAL
Create hunting rule

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

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

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

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

Gathering data
Result
Gathering data
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-12-26T14:12:00Z UTC
Last seen:
2025-12-26T14:38:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/31e77cc535cf8b296d879f2f41825f8b73279556c005d6345c87e4df1dffddd3/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/d77cb67c-7293-4727-841b-a07c58e4145f
Behavior Graph:
Download SVG
%3 guuid=00646257-1a00-0000-0a8f-7635590a0000 pid=2649 /usr/bin/sudo guuid=8c046d59-1a00-0000-0a8f-76355e0a0000 pid=2654 /tmp/sample.bin guuid=00646257-1a00-0000-0a8f-7635590a0000 pid=2649->guuid=8c046d59-1a00-0000-0a8f-76355e0a0000 pid=2654 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5bb9f1ae-00ee-4463-9f38-2729a3d244f1
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1839830
Signature
Connects to many IPs within the same subnet mask (likely port scanning)
Multi AV Scanner detection for submitted file
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1839830 Sample: nklarm7.elf Startdate: 26/12/2025 Architecture: LINUX Score: 60 18 2.192.103.204, 23 ASN-TIMServiceProviderIT Italy 2->18 20 2.192.103.218, 23 ASN-TIMServiceProviderIT Italy 2->20 22 100 other IPs or domains 2->22 24 Multi AV Scanner detection for submitted file 2->24 26 Yara detected Mirai 2->26 28 Connects to many IPs within the same subnet mask (likely port scanning) 2->28 8 nklarm7.elf 2->8         started        10 dash rm 2->10         started        12 dash rm 2->12         started        signatures3 process4 process5 14 nklarm7.elf 8->14         started        process6 16 nklarm7.elf 14->16         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/31e77cc535cf8b296d879f2f41825f8b73279556c005d6345c87e4df1dffddd3
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/31e77cc535cf8b296d879f2f41825f8b73279556c005d6345c87e4df1dffddd3/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-12-26 17:49:23 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=ghtxzrjvz6fss3mht4xudas7rnzspfkwyac5mnc4q7sn6hp73xjq._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
discovery
Link:
https://tria.ge/reports/251226-wd693sskez/
Behaviour
Changes its process name
Renames itself
Contacts a large (18127) amount of remote hosts
Creates a large amount of network flows
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/31e77cc535cf8b296d879f2f41825f8b73279556c005d6345c87e4df1dffddd3

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_8299c877
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 31e77cc535cf8b296d879f2f41825f8b73279556c005d6345c87e4df1dffddd3

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3739154/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3739156/

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