MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b255f50a52bc040e81199e5dff3adb4299b3a2d4dd5e7024c1a49d1bafe777a2. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b255f50a52bc040e81199e5dff3adb4299b3a2d4dd5e7024c1a49d1bafe777a2
SHA3-384 hash: 9144cea5ca37cb5ecd61869d9b74e2429821cdd087ef67f07f8c6f8c8b27a19ee133a9fa076e7a0122086f71dce109d4
SHA1 hash: 72f192768d2cdc8760c14d3abac3700c922a6cdf
MD5 hash: 4faf776489de19a7057125c33b3d452f
humanhash: yankee-april-minnesota-low
File name:kvariant.arm
Download: download sample
Signature Mirai
Create hunting rule
File size:91'496 bytes
First seen:2025-10-07 23:13:18 UTC
Last seen:2025-10-07 23:41:33 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:vqwv9ja4EN7cubBfwrGroS4B0ZyOPOFkHpjHLE/7JEcXvmzo:vqwv5a4Y/bBfeGp006+JbQ/Bfv
TLSH T1E5932985BD41AA26C7C1167BFF4F0289371A6798E3EE3203C9295F70378B95B0D6B611
telfhash t1c2b09bc3cd094df413871cdfc52f5547434031417511641554cd1ec94171964f453165
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 :
2
# of downloads :
91
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.29524.LC.UNOFFICIAL
Create hunting rule

Unix.Exploit.Mirai-9795501-0
Create hunting rule

Unix.Exploit.Mirai-9798002-0
Create hunting rule

Unix.Dropper.Mirai-9977145-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade obfuscated rust
Link:
https://www.filescan.io/uploads/68e59eabd4a0085473c358ea/reports/f9508858-535b-4983-8419-aa07a545d06a/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
not packed
Botnet:
unknown
Number of open files:
2
Number of processes launched:
4
Processes remaning?
true
Remote TCP ports scanned:
37215,23
Full report:
https://elfdigest.com/brief/b255f50a52bc040e81199e5dff3adb4299b3a2d4dd5e7024c1a49d1bafe777a2
Behaviour
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-10-07T18:12:00Z UTC
Last seen:
2025-10-09T16:10:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/b255f50a52bc040e81199e5dff3adb4299b3a2d4dd5e7024c1a49d1bafe777a2/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/2815b545-c070-4bc6-8f6d-ce7b57ee0642
Behavior Graph:
Download SVG
%3 guuid=c854a3f7-1700-0000-5204-fe08af0c0000 pid=3247 /usr/bin/sudo guuid=b5e42efa-1700-0000-5204-fe08b80c0000 pid=3256 /tmp/sample.bin guuid=c854a3f7-1700-0000-5204-fe08af0c0000 pid=3247->guuid=b5e42efa-1700-0000-5204-fe08b80c0000 pid=3256 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/df4b5330-d2b7-4dfd-af0b-f002cc728250
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1791064
Signature
Antivirus / Scanner detection for submitted sample
Connects to many IPs within the same subnet mask (likely port scanning)
Connects to many ports of the same IP (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: 1791064 Sample: kvariant.arm.elf Startdate: 08/10/2025 Architecture: LINUX Score: 80 21 223.8.251.202, 37215 CHINANET-BACKBONENo31Jin-rongStreetCN China 2->21 23 223.8.251.203 CHINANET-BACKBONENo31Jin-rongStreetCN China 2->23 25 100 other IPs or domains 2->25 27 Antivirus / Scanner detection for submitted sample 2->27 29 Multi AV Scanner detection for submitted file 2->29 31 Yara detected Mirai 2->31 33 2 other signatures 2->33 9 kvariant.arm.elf 2->9         started        11 python3.8 dpkg 2->11         started        signatures3 process4 process5 13 kvariant.arm.elf 9->13         started        process6 15 kvariant.arm.elf 13->15         started        process7 17 kvariant.arm.elf 15->17         started        19 kvariant.arm.elf 15->19         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b255f50a52bc040e81199e5dff3adb4299b3a2d4dd5e7024c1a49d1bafe777a2
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b255f50a52bc040e81199e5dff3adb4299b3a2d4dd5e7024c1a49d1bafe777a2/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-10-07 23:13:41 UTC
File Type:
ELF32 Little (Exe)
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wjk7kcssxqca5aiztzo76ow3ikm3hiwu3vphajgbusorxl7ho6ra._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/251007-27rdlszsbw/
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/2d82a462-dba2-4d53-b9cb-be5228a4dd86
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Reaper
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/b255f50a52bc040e81199e5dff3adb4299b3a2d4dd5e7024c1a49d1bafe777a2

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:CVE_2017_17215
Create hunting rule
Author:NDA0E
Description:Detects exploitation attempt of CVE-2017-17215
Rule name:ELF_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
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 b255f50a52bc040e81199e5dff3adb4299b3a2d4dd5e7024c1a49d1bafe777a2

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3620496/
  
Delivery method
Distributed via web download

Comments