MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cac9311f39b9a11b7cd020369801b14d8ba9afb21b7e65eb437f5d1d6807c43e. 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: 6


Intelligence 6 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cac9311f39b9a11b7cd020369801b14d8ba9afb21b7e65eb437f5d1d6807c43e
SHA3-384 hash: 6f33c5d2f93b22684ef2b15dbf5dc91be8cf88d9143b465615cf607489da5e748d4176138bf5000cc97054631b6472e2
SHA1 hash: 514886df0640cedf47ac98916615e1ab9c3ec44f
MD5 hash: 9deb77f6bb7663f442380b3ac03674fc
humanhash: blossom-three-steak-utah
File name:aarch64
Download: download sample
Signature Mirai
Create hunting rule
File size:451'064 bytes
First seen:2026-02-05 07:28:26 UTC
Last seen:2026-02-05 08:26:39 UTC
File type: elf
MIME type:application/x-sharedlib
ssdeep 12288:IIX5Hvfbf/LIMxnrwIampQW88ohoO3dAD4d:IIX5Hvfbf/LIMnUIa58oWO3dAD4d
TLSH T129A46DCCFE1CFF82D6818A75A9770613A33934A47B49D0237D15202EE8D37D86D6758A
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 upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 091f2e8fff8bc8d83ec45640aeb6e12491614b577224cfe1813c7cd8a3e19474
File size (compressed) :175'608 bytes
File size (de-compressed) :451'064 bytes
Format:linux/arm64
Packed file: 091f2e8fff8bc8d83ec45640aeb6e12491614b577224cfe1813c7cd8a3e19474

Intelligence

File Origin
# of uploads :
2
# of downloads :
69
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.BackDoor.Fgt.6240.2990.16365.UNOFFICIAL
Create hunting rule

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
gafgyt gcc mirai
Link:
https://www.filescan.io/uploads/698446c9930564ff3c8c1da5/reports/95af1f44-f95f-4092-9381-f4e4fae18924/overview
Result
Gathering data
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/511684de-3128-4d03-8dc4-d080b106f037
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad.mine
Score:
52 / 100
Link:
https://www.joesandbox.com/analysis/1863748
Signature
Contains symbols with names commonly found in malware
Stdout / stderr contain strings indicative of a mining client
Terminates several processes with shell command 'killall'
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1863748 Sample: aarch64.elf Startdate: 05/02/2026 Architecture: LINUX Score: 52 24 169.254.169.254, 80 USDOSUS Reserved 2->24 26 109.202.202.202, 80 INIT7CH Switzerland 2->26 28 3 other IPs or domains 2->28 30 Stdout / stderr contain strings indicative of a mining client 2->30 32 Contains symbols with names commonly found in malware 2->32 7 aarch64.elf 2->7         started        9 dash rm 2->9         started        11 dash rm 2->11         started        13 python3.8 dpkg 2->13         started        signatures3 process4 process5 15 aarch64.elf killall 7->15         started        18 aarch64.elf killall 7->18         started        20 aarch64.elf killall 7->20         started        22 59 other processes 7->22 signatures6 34 Terminates several processes with shell command 'killall' 15->34
Score:
14%
Verdict:
Benign
File Type:
ELF
Link:
https://malprob.io/report/cac9311f39b9a11b7cd020369801b14d8ba9afb21b7e65eb437f5d1d6807c43e
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/cac9311f39b9a11b7cd020369801b14d8ba9afb21b7e65eb437f5d1d6807c43e/
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zletchzzxgqrw7gqea3jqanrjwf2tl5sdn7gl22dp5or22ahyq7a._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/260205-jbbn6sas2f/
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/cac9311f39b9a11b7cd020369801b14d8ba9afb21b7e65eb437f5d1d6807c43e

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:ELF_IoT_Persistence_Hunt
Create hunting rule
Author:4r4
Description:Hunts for ELF files with persistence and download capabilities
Rule name:ELF_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:iot_req_metachar
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:testlumma
Create hunting rule
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 091f2e8fff8bc8d83ec45640aeb6e12491614b577224cfe1813c7cd8a3e19474

Mirai

elf cac9311f39b9a11b7cd020369801b14d8ba9afb21b7e65eb437f5d1d6807c43e

(this sample)

  
Dropped by
SHA256 091f2e8fff8bc8d83ec45640aeb6e12491614b577224cfe1813c7cd8a3e19474
  
URLhaus
https://urlhaus.abuse.ch/url/3748050/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 ebb447980fae3a880a30f84087776b0b

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