MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b937261df1693998bc8fc57c183bfb6f04c0084ca45afecdb5e53d1fc242ea4d. 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: 10


Intelligence 10 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b937261df1693998bc8fc57c183bfb6f04c0084ca45afecdb5e53d1fc242ea4d
SHA3-384 hash: 20c88a9ad9abdb4effa74ed84b2e6d8e5c471a303b6e2ea0de479a506d40f8b8e26afefc5f71c50ffdae7f95b05ff2fa
SHA1 hash: d7192782d8168be0180b0db9c2dba04a8479d024
MD5 hash: 057f5c0b7b596bfc4c1a5c03e2cec3b0
humanhash: mirror-eleven-fourteen-golf
File name:s
Download: download sample
Signature Mirai
Create hunting rule
File size:200'110 bytes
First seen:2025-08-15 08:15:06 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 6144:npca3D6LiNHC2PJlNGcKaEM/9QgAmsOwY922LVs:npca3D6LiNHlJ/G+V/kmsOF922LVs
TLSH T1AF142809D640475BC2E227BAF68B429E33335F54A3D733299938BBB43BD1B691E32115
telfhash t1c6317522997883242ff79928fcbc57b301226b2353563e72af35c5cc44260a1e53ad9b
Magika elf
Reporter abuse_ch
Tags:elf gafgyt mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
37
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Unix.Dropper.Mirai-7139229-0
Create hunting rule

Unix.Trojan.Mirai-9760303-0
Create hunting rule

Unix.Trojan.Mirai-10056454-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Attempts to kill processes by name
Collects information on the CPU
Runs as daemon
Creating a file
Opens a port
Launching a process
Kills processes
Sends data to a server
Connection attempt
Substitutes an application name
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
gcc rust threat
Link:
https://www.filescan.io/uploads/689eecc22fbe0788fb20895c/reports/64db4f6a-9238-499e-a4b0-ea487e62ca5c/overview
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/aa4f0ee6-9ed7-4e11-95c3-fba46a6394dd
Result
Threat name:
Gafgyt
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1757715
Signature
Antivirus / Scanner detection for submitted sample
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
Opens /proc/net/* files useful for finding connected devices and routers
Terminates several processes with shell command 'killall'
Yara detected Gafgyt
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1757715 Sample: s.elf Startdate: 15/08/2025 Architecture: LINUX Score: 84 49 206.123.128.67, 51836, 65481 LEASEWEB-USA-NYC-11US United States 2->49 51 169.254.169.254, 80 USDOSUS Reserved 2->51 53 4 other IPs or domains 2->53 57 Malicious sample detected (through community Yara rule) 2->57 59 Antivirus / Scanner detection for submitted sample 2->59 61 Multi AV Scanner detection for submitted file 2->61 63 2 other signatures 2->63 9 s.elf 2->9         started        12 dash rm 2->12         started        14 dash rm 2->14         started        16 python3.8 dpkg 2->16         started        signatures3 process4 signatures5 65 Opens /proc/net/* files useful for finding connected devices and routers 9->65 18 s.elf 9->18         started        20 s.elf 9->20         started        22 s.elf 9->22         started        process6 process7 24 s.elf sh 18->24         started        26 s.elf sh 18->26         started        28 s.elf sh 18->28         started        32 5 other processes 18->32 30 s.elf 20->30         started        process8 34 sh killall 24->34         started        37 sh killall 26->37         started        39 sh killall 28->39         started        41 sh killall 32->41         started        43 sh killall 32->43         started        45 sh killall 32->45         started        47 2 other processes 32->47 signatures9 55 Terminates several processes with shell command 'killall' 34->55
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b937261df1693998bc8fc57c183bfb6f04c0084ca45afecdb5e53d1fc242ea4d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b937261df1693998bc8fc57c183bfb6f04c0084ca45afecdb5e53d1fc242ea4d/
Verdict:
Malicious
Threat:
HEUR:Backdoor.Linux.Mirai
Link:
https://tip.neiki.dev/file/b937261df1693998bc8fc57c183bfb6f04c0084ca45afecdb5e53d1fc242ea4d
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-08-15 08:15:55 UTC
File Type:
ELF32 Little (Exe)
AV detection:
14 of 23 (60.87%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xe3smhprne4zrpepyv6bqo73n4cmaccmurnp5tnv4u6r7qsc5jgq._file
Result
Malware family:
gafgyt
Create hunting rule
Score:
  10/10
Tags:
family:gafgyt antivm defense_evasion discovery execution
Link:
https://tria.ge/reports/250815-j51kdsvzax/
Behaviour
Command and Scripting Interpreter: Unix Shell
Reads runtime system information
Changes its process name
Checks CPU configuration
Reads system network configuration
Enumerates running processes
Reads system routing table
Modifies Watchdog functionality
Writes memory of remote process
Verdict:
Malicious
Tags:
trojan gafgyt Unix.Dropper.Mirai-7139229-0
YARA:
Linux_Trojan_Gafgyt_6a510422 Linux_Trojan_Gafgyt_d2953f92
Link:
https://app.threat.zone/submission/c74a10b7-2a39-48cd-a08a-7ccc1411f682
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/b937261df1693998bc8fc57c183bfb6f04c0084ca45afecdb5e53d1fc242ea4d

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:ach_202503_elf_Mirai
Create hunting rule
Author:abuse.ch
Description:Detects Mirai 'TSource' ELF files
Rule name:botnet_plaintext_c2
Create hunting rule
Author:cip
Description:Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:Linux_Gafgyt_Generic
Create hunting rule
Author:albertzsigovits
Description:Generic Approach to Mirai/Gafgyt samples
Rule name:Linux_Trojan_Gafgyt_6a510422
Create hunting rule
Author:Elastic Security
Reference:14cc92b99daa0c91aa09d9a7996ee5549a5cacd7be733960b2cf3681a7c2b628
Rule name:Linux_Trojan_Gafgyt_d2953f92
Create hunting rule
Author:Elastic Security
Reference:14cc92b99daa0c91aa09d9a7996ee5549a5cacd7be733960b2cf3681a7c2b628
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
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 b937261df1693998bc8fc57c183bfb6f04c0084ca45afecdb5e53d1fc242ea4d

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3576532/
  
Delivery method
Distributed via web download

Comments