MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8790f1a963db6fc53a4e0159f264949b5a3c11c4e99566b3620fd2b92d16433. 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: 13


Intelligence 13 IOCs YARA 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b8790f1a963db6fc53a4e0159f264949b5a3c11c4e99566b3620fd2b92d16433
SHA3-384 hash: 18f25cbc1f876b1ea5ac0312551cfc27fd6a1106e895ea6589f1bbd42a6e7a58ee144aeddb17bc7bb1953d9f53892020
SHA1 hash: 12ae0a73c7dd730a8c50c09a6d8962e12e331626
MD5 hash: 20e5844ea981fc619ed95031286c3051
humanhash: double-robin-carolina-steak
File name:kvariant.x86
Download: download sample
Signature Mirai
Create hunting rule
File size:83'880 bytes
First seen:2025-10-07 21:56:22 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:b44XB9AkHPtnm/B+AA5ICBLf0553GMSxu:Z6kHPkJrXCBruJGXk
TLSH T1AC834B13909080FDC4DAD6784F9F9536EA22F03E5372B65E63D46E273A4DE202F4E259
telfhash t104318bb478222ca062fbf271b343d4955c220fa490f574d5ae7368facf663d15ca5023
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 gafgyt mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
67
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.29524.LC.UNOFFICIAL
Create hunting rule

Unix.Dropper.Mirai-7540662-0
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:

Behaviour
DNS request
Receives data from a server
Runs as daemon
Sends data to a server
Connection attempt
Substitutes an application name
Performs a bruteforce attack in the network
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
lolbin masquerade obfuscated remote threat
Link:
https://www.filescan.io/uploads/68e58ca5d4a0085473c34b1a/reports/0b1cae7c-26da-43df-a265-6ceabf147cfc/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
2
Number of processes launched:
5
Processes remaning?
true
Remote TCP ports scanned:
37215,23
Full report:
https://elfdigest.com/brief/b8790f1a963db6fc53a4e0159f264949b5a3c11c4e99566b3620fd2b92d16433
Behaviour
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.64.le
Link:
https://opentip.kaspersky.com/b8790f1a963db6fc53a4e0159f264949b5a3c11c4e99566b3620fd2b92d16433/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/a21f13cb-12b5-4fbc-9720-207aff0e8755
Behavior Graph:
Download SVG
%3 guuid=d538ff2e-1700-0000-d2e6-20c0d00c0000 pid=3280 /usr/bin/sudo guuid=30471931-1700-0000-d2e6-20c0d50c0000 pid=3285 /tmp/sample.bin guuid=d538ff2e-1700-0000-d2e6-20c0d00c0000 pid=3280->guuid=30471931-1700-0000-d2e6-20c0d50c0000 pid=3285 execve guuid=0c8a4931-1700-0000-d2e6-20c0d60c0000 pid=3286 /tmp/sample.bin zombie guuid=30471931-1700-0000-d2e6-20c0d50c0000 pid=3285->guuid=0c8a4931-1700-0000-d2e6-20c0d60c0000 pid=3286 clone guuid=90455231-1700-0000-d2e6-20c0d70c0000 pid=3287 /tmp/sample.bin dns net send-data zombie guuid=0c8a4931-1700-0000-d2e6-20c0d60c0000 pid=3286->guuid=90455231-1700-0000-d2e6-20c0d70c0000 pid=3287 clone 4f6baed0-9587-596c-82b3-fd721afe4cc1 10.0.2.3:53 guuid=90455231-1700-0000-d2e6-20c0d70c0000 pid=3287->4f6baed0-9587-596c-82b3-fd721afe4cc1 send: 35B 3eea8321-7a1a-53e3-8cc5-fd3fbfba42a6 auth.binaries.lol:41323 guuid=90455231-1700-0000-d2e6-20c0d70c0000 pid=3287->3eea8321-7a1a-53e3-8cc5-fd3fbfba42a6 send: 11B guuid=a9b44680-1700-0000-d2e6-20c0400d0000 pid=3392 /tmp/sample.bin net net-scan send-data guuid=90455231-1700-0000-d2e6-20c0d70c0000 pid=3287->guuid=a9b44680-1700-0000-d2e6-20c0400d0000 pid=3392 clone guuid=e0f94b80-1700-0000-d2e6-20c0410d0000 pid=3393 /tmp/sample.bin net net-scan send-data guuid=90455231-1700-0000-d2e6-20c0d70c0000 pid=3287->guuid=e0f94b80-1700-0000-d2e6-20c0410d0000 pid=3393 clone 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=a9b44680-1700-0000-d2e6-20c0400d0000 pid=3392->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=a9b44680-1700-0000-d2e6-20c0400d0000 pid=3392|send-data send-data to 4097 IP addresses review logs to see them all guuid=a9b44680-1700-0000-d2e6-20c0400d0000 pid=3392->guuid=a9b44680-1700-0000-d2e6-20c0400d0000 pid=3392|send-data send guuid=e0f94b80-1700-0000-d2e6-20c0410d0000 pid=3393->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=e0f94b80-1700-0000-d2e6-20c0410d0000 pid=3393|send-data send-data to 4096 IP addresses review logs to see them all guuid=e0f94b80-1700-0000-d2e6-20c0410d0000 pid=3393->guuid=e0f94b80-1700-0000-d2e6-20c0410d0000 pid=3393|send-data send
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/57c771da-0437-4b43-9476-b7c6a74e9eba
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1791039
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)
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Uses known network protocols on non-standard ports
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1791039 Sample: kvariant.x86.elf Startdate: 07/10/2025 Architecture: LINUX Score: 92 21 156.158.50.48 airtel-tz-asTZ Tanzania United Republic of 2->21 23 156.91.176.177, 37215 WAL-MARTUS United States 2->23 25 99 other IPs or domains 2->25 27 Malicious sample detected (through community Yara rule) 2->27 29 Antivirus / Scanner detection for submitted sample 2->29 31 Multi AV Scanner detection for submitted file 2->31 33 4 other signatures 2->33 9 kvariant.x86.elf 2->9         started        11 python3.8 dpkg 2->11         started        signatures3 process4 process5 13 kvariant.x86.elf 9->13         started        process6 15 kvariant.x86.elf 13->15         started        process7 17 kvariant.x86.elf 15->17         started        19 kvariant.x86.elf 15->19         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b8790f1a963db6fc53a4e0159f264949b5a3c11c4e99566b3620fd2b92d16433
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b8790f1a963db6fc53a4e0159f264949b5a3c11c4e99566b3620fd2b92d16433/
Threat name:
Linux.Backdoor.Gafgyt
Create hunting rule
Status:
Malicious
First seen:
2025-10-07 21:57:42 UTC
File Type:
ELF64 Little (Exe)
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xb4q6guwhw3pyu5e4akz6jsjjg22hqi4j2mvm2zwed6sxewrmqzq._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
discovery linux
Link:
https://tria.ge/reports/251007-1tvcnsal7t/
Behaviour
Changes its process name
Contacts a large (37334) amount of remote hosts
Creates a large amount of network flows
Verdict:
Malicious
Tags:
trojan gafgyt Unix.Dropper.Mirai-7540662-0
YARA:
Linux_Trojan_Gafgyt_9e9530a7 Linux_Trojan_Gafgyt_807911a2 Linux_Trojan_Gafgyt_d4227dbf Linux_Trojan_Gafgyt_d996d335 Linux_Trojan_Gafgyt_d0c57a2e Linux_Trojan_Gafgyt_620087b9 Linux_Trojan_Gafgyt_0cd591cd Linux_Trojan_Gafgyt_33b4111a Linux_Trojan_Gafgyt_a33a8363
Link:
https://app.threat.zone/submission/c2c868ba-9e72-4068-95a1-c85da6f6299d
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b8790f1a963db6fc53a4e0159f264949b5a3c11c4e99566b3620fd2b92d16433

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_Trojan_Gafgyt_0cd591cd
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_33b4111a
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_620087b9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_807911a2
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_9e9530a7
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_a33a8363
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d0c57a2e
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d4227dbf
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d996d335
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 b8790f1a963db6fc53a4e0159f264949b5a3c11c4e99566b3620fd2b92d16433

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3620499/
  
Delivery method
Distributed via web download

Comments