MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c1fc75d7e279d839d8762c174a29f40f38a10d4f21e01d3a1a1881d3b407fe56. 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: c1fc75d7e279d839d8762c174a29f40f38a10d4f21e01d3a1a1881d3b407fe56
SHA3-384 hash: a93c2ddeee7c005bf068b55370ef4c63d7c3748ef68ea3d2ed7901839b2197d7456e0744472e7a0d5fae42ecb1842800
SHA1 hash: edbb807c2ae69656c877f3f86382d0a0c4c7f19f
MD5 hash: 50bb657927a25d465a603585b883ff2e
humanhash: uncle-august-eleven-football
File name:ssh-agent-auth.x86_64
Download: download sample
Signature Mirai
Create hunting rule
File size:38'939 bytes
First seen:2026-01-31 21:17:06 UTC
Last seen:2026-02-01 04:28:30 UTC
File type: elf
MIME type:application/x-executable
ssdeep 768:2byQKr/7RHeBIh155aws3BS4AW/LlERRsAq3ROkSAVWbFnx09Y:2NK77xwk5UwsRtAW/LKqBOknWpcY
TLSH T15803E1630367EEFCD49796FA5F0E54C8FA0660266202673F081072FDCED67952B68781
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 :
55
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/f172cfe5-8cfb-4411-805d-b802895d2f13/
Detection(s):
SecuriteInfo.com.Linux.Mirai-19.UNOFFICIAL
Create hunting rule

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
packed packed upx
Link:
https://www.filescan.io/uploads/697e7171c9bfb60ece19f4a2/reports/e2e51ed8-ff69-4ffe-9023-c71510a33a6d/overview
Result
Gathering data
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/404035b1-0edf-45ef-89fd-a1374070dc6b
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1861026
Signature
Deletes system log files
Drops files in suspicious directories
Malicious sample detected (through community Yara rule)
Manipulation of devices in /dev
Multi AV Scanner detection for submitted file
Sample deletes itself
Sample is packed with UPX
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1861026 Sample: ssh-agent-auth.x86_64.elf Startdate: 31/01/2026 Architecture: LINUX Score: 84 53 Malicious sample detected (through community Yara rule) 2->53 55 Multi AV Scanner detection for submitted file 2->55 57 Sample is packed with UPX 2->57 9 dash rm ssh-agent-auth.x86_64.elf 2->9         started        12 dash rm 2->12         started        14 dash head 2->14         started        16 7 other processes 2->16 process3 signatures4 65 Sample deletes itself 9->65 18 ssh-agent-auth.x86_64.elf 9->18         started        process5 process6 20 ssh-agent-auth.x86_64.elf 18->20         started        file7 47 /etc/init.d/sysd, POSIX 20->47 dropped 59 Sample tries to set files in /etc globally writable 20->59 61 Drops files in suspicious directories 20->61 63 Sample tries to persist itself using System V runlevels 20->63 24 ssh-agent-auth.x86_64.elf 20->24         started        26 ssh-agent-auth.x86_64.elf sh 20->26         started        28 ssh-agent-auth.x86_64.elf 20->28         started        30 7 other processes 20->30 signatures8 process9 process10 32 ssh-agent-auth.x86_64.elf 24->32         started        35 sh cp 26->35         started        37 ssh-agent-auth.x86_64.elf 28->37         started        39 ssh-agent-auth.x86_64.elf 30->39         started        41 ssh-agent-auth.x86_64.elf 30->41         started        43 ssh-agent-auth.x86_64.elf 30->43         started        45 4 other processes 30->45 signatures11 49 Manipulation of devices in /dev 32->49 51 Deletes system log files 32->51
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/c1fc75d7e279d839d8762c174a29f40f38a10d4f21e01d3a1a1881d3b407fe56
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c1fc75d7e279d839d8762c174a29f40f38a10d4f21e01d3a1a1881d3b407fe56/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-31 21:18:36 UTC
File Type:
ELF64 Little (Exe)
AV detection:
8 of 36 (22.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yh6hlv7cphmdtwdwfqluukpub44kcdkpehqb2oq2dca5hnah7zla._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet defense_evasion discovery linux persistence upx
Link:
https://tria.ge/reports/260131-z49pnshz7a/
Behaviour
Reads runtime system information
Writes file to tmp directory
Changes its process name
Deletes log files
Enumerates running processes
Modifies init.d
Modifies rc script
Deletes Audit logs
Deletes itself
Deletes journal logs
Deletes system logs
Traces itself
Mirai
Mirai family
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.29
Link:
https://yomi.yoroi.company/submissions/c1fc75d7e279d839d8762c174a29f40f38a10d4f21e01d3a1a1881d3b407fe56

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:SUSP_ELF_LNX_UPX_Compressed_File
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a suspicious ELF binary with UPX compression
Reference:Internal Research
Rule name:upx_packed_elf_v1
Create hunting rule
Author:RandomMalware

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Mirai

elf c1fc75d7e279d839d8762c174a29f40f38a10d4f21e01d3a1a1881d3b407fe56

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3766858/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3766863/

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