MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a91c792a020fe26773500dd33cc0a43d803268497c235f2ca0f314b6f4a30253. 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: 14


Intelligence 14 IOCs YARA 23 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a91c792a020fe26773500dd33cc0a43d803268497c235f2ca0f314b6f4a30253
SHA3-384 hash: 37983c0db55d91b163d0faa819463e6b9e854dd9d29ebc01a980b170057921cd2a9250f08ee11b928915a7e0dfd773e2
SHA1 hash: ab5a1649e13e18f7d91562d97d0461bc8eb7604f
MD5 hash: 11bbaccab6b01e0d84ed2b124256f9b3
humanhash: jupiter-neptune-salami-winter
File name:db0fa4b8db0333367e9bda3ab68b8042.x86
Download: download sample
Signature Mirai
Create hunting rule
File size:152'488 bytes
First seen:2026-02-04 00:28:21 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:lTqTFtXGzUUHs4zA0oRPI5TUGK9nrI/dr05wZpwbZny:lT6fXGzFnE0wQaxJc45CpwRy
TLSH T1F1E37D80B783D9F6E80506712177AF72BA72E87A243ADB91D3A8AD33DC51542C5073BD
telfhash t1d9514cb9faaa49ec5bc0d902d28e5b21ed0ef67b742132bd05e212e43233551607dc7d
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 upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 554729ae1fc6a7c144dab6a0860a5930050b9a60f5277cb7744729922bd13972
File size (compressed) :61'200 bytes
File size (de-compressed) :152'488 bytes
Format:linux/i386
Packed file: 554729ae1fc6a7c144dab6a0860a5930050b9a60f5277cb7744729922bd13972

Intelligence

File Origin
# of uploads :
1
# of downloads :
50
Origin country :
NL NL
Vendor Threat Intelligence
Malware configuration found for:
Mirai
Details
Mirai
an XOR decryption key and at least a c2 socket address
Link:
https://research.acce.ciphertechsolutions.com/results/15b5cd82-0c3a-488e-a261-ca9a0e8fa987/
Detection(s):
SecuriteInfo.com.Linux.Mirai-63.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.29524.LC.UNOFFICIAL
Create hunting rule

Unix.Dropper.Mirai-7135870-0
Create hunting rule

Unix.Dropper.Mirai-7135906-0
Create hunting rule

Unix.Dropper.Mirai-7135966-0
Create hunting rule

Unix.Dropper.Mirai-7135979-0
Create hunting rule

Unix.Dropper.Mirai-7355719-0
Create hunting rule

Unix.Trojan.Mirai-9935718-0
Create hunting rule

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

Unix.Trojan.Mirai-10028515-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Runs as daemon
Receives data from a server
Opens a port
Sends data to a server
DNS request
Connection attempt
Substitutes an application name
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
gafgyt masquerade mirai obfuscated
Link:
https://www.filescan.io/uploads/698292da2ffccda097675a2b/reports/1be8181e-ba4d-4fd3-8278-6a8529aebbe9/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:
4
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/a91c792a020fe26773500dd33cc0a43d803268497c235f2ca0f314b6f4a30253
Behaviour
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Result
Gathering data
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/52e2f61f-d745-4b2c-867d-72019f92ea39
Behavior Graph:
Download SVG
%3 guuid=412305cc-1900-0000-ebc4-70b4e80a0000 pid=2792 /usr/bin/sudo guuid=f346eecd-1900-0000-ebc4-70b4ea0a0000 pid=2794 /tmp/sample.bin net guuid=412305cc-1900-0000-ebc4-70b4e80a0000 pid=2792->guuid=f346eecd-1900-0000-ebc4-70b4ea0a0000 pid=2794 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=f346eecd-1900-0000-ebc4-70b4ea0a0000 pid=2794->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=146e5ace-1900-0000-ebc4-70b4eb0a0000 pid=2795 /tmp/sample.bin dns net send-data zombie guuid=f346eecd-1900-0000-ebc4-70b4ea0a0000 pid=2794->guuid=146e5ace-1900-0000-ebc4-70b4eb0a0000 pid=2795 clone guuid=146e5ace-1900-0000-ebc4-70b4eb0a0000 pid=2795->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 45B b336e4e1-2db1-5d9f-b8f7-41d0ac55746c stopdicksucking.duckdns.org:59666 guuid=146e5ace-1900-0000-ebc4-70b4eb0a0000 pid=2795->b336e4e1-2db1-5d9f-b8f7-41d0ac55746c send: 7B guuid=0ee669ce-1900-0000-ebc4-70b4ec0a0000 pid=2796 /tmp/sample.bin guuid=146e5ace-1900-0000-ebc4-70b4eb0a0000 pid=2795->guuid=0ee669ce-1900-0000-ebc4-70b4ec0a0000 pid=2796 clone guuid=98d484ce-1900-0000-ebc4-70b4ed0a0000 pid=2797 /tmp/sample.bin guuid=146e5ace-1900-0000-ebc4-70b4eb0a0000 pid=2795->guuid=98d484ce-1900-0000-ebc4-70b4ed0a0000 pid=2797 clone
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2f77c3d6-bb2f-4ed5-a33a-0f0705a3bc05
Result
Threat name:
Mirai
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1862929
Signature
Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Uses dynamic DNS services
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a91c792a020fe26773500dd33cc0a43d803268497c235f2ca0f314b6f4a30253
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a91c792a020fe26773500dd33cc0a43d803268497c235f2ca0f314b6f4a30253/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/a91c792a020fe26773500dd33cc0a43d803268497c235f2ca0f314b6f4a30253
Threat name:
Linux.Backdoor.Gafgyt
Create hunting rule
Status:
Malicious
First seen:
2026-02-04 00:29:28 UTC
File Type:
ELF32 Little (Exe)
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=veohskqcb7rgo42qbxjtzqfehwade2cjpqrv6lfa6mkln5fdajjq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:echobot family:mirai botnet:unstable defense_evasion discovery linux
Link:
https://tria.ge/reports/260204-asz9esfv7f/
Behaviour
Changes its process name
Reads system network configuration
Enumerates active TCP sockets
Writes file to system bin folder
Modifies Watchdog functionality
Malware Config
C2 Extraction:
stopdicksucking.duckdns.org
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.84
Link:
https://yomi.yoroi.company/submissions/a91c792a020fe26773500dd33cc0a43d803268497c235f2ca0f314b6f4a30253

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:ELF_Toriilike_persist
Create hunting rule
Author:4r4
Description:Detects Torii IoT Botnet (stealthier Mirai alternative)
Reference:Identified via researched data
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Linux_Generic_Threat_1ac392ca
Create hunting rule
Author:Elastic Security
Rule name:Linux_Mirai_Generic
Create hunting rule
Author:albertzsigovits
Description:Generic Approach to Mirai/Gafgyt samples
Rule name:Linux_Trojan_Mirai_389ee3e9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_5f7b67b8
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_804f8e7c
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_88de437f
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_8aa7b5d3
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_93fc3657
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_99d78950
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_a68e498c
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_ae9d0fa6
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_b14f4c5d
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_cc93863b
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_fa3ad9d0
Create hunting rule
Author:Elastic Security
Rule name:MAL_ELF_LNX_Mirai_Oct10_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects ELF Mirai variant
Reference:Internal Research
Rule name:MAL_ELF_LNX_Mirai_Oct10_1_RID2F39
Create hunting rule
Author:Florian Roth
Description:Detects ELF Mirai variant
Reference:Internal Research
Rule name:SUSP_XORed_Mozilla_Oct19
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

sh fa87c723cba46f5e1d708d97d5eb79fd4f10ff0acebfc9187c8baa30f5bcbd0e

Mirai

elf 554729ae1fc6a7c144dab6a0860a5930050b9a60f5277cb7744729922bd13972

Mirai

elf a91c792a020fe26773500dd33cc0a43d803268497c235f2ca0f314b6f4a30253

(this sample)

  
Dropped by
SHA256 554729ae1fc6a7c144dab6a0860a5930050b9a60f5277cb7744729922bd13972
  
URLhaus
https://urlhaus.abuse.ch/url/3770576/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 6b95c7f776c94c4fc9f3276a557a6b64
  
URLhaus
https://urlhaus.abuse.ch/url/3770788/

Comments