MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 caf8129b8e3ce62e0d759cf516a664b60d79e01446870674ad8af1297a755f61. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: caf8129b8e3ce62e0d759cf516a664b60d79e01446870674ad8af1297a755f61
SHA3-384 hash: d917f8aa53dfe2c0d701bf3d167a3c8f4475b139d499af6b46224ee866d25452026023d8d7df09a68f12baae194a3107
SHA1 hash: be9fc383ab5c7a16a0a36798462e9022cb07394d
MD5 hash: fc35d2d44867610a7fa3a7df7865c2e0
humanhash: september-kitten-diet-solar
File name:sumrak.arm
Download: download sample
Signature Mirai
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File size:50'824 bytes
First seen:2026-01-16 02:50:35 UTC
Last seen:2026-01-16 15:35:03 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:6c+z6c4cJ/za/zRrAzgHoMAbzTIj0Ia2Q6zc:1i6pcNzemzzTIvaL6w
TLSH T1C033025A6B2CC6C0D67048B6DD361744B757AEFEE1D732603520E938A3165026EFC9C7
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 UPX
File size (compressed) :50'824 bytes
File size (de-compressed) :129'120 bytes
Format:linux/arm
Unpacked file: 64ffa98464151f732c68c758eef025fe222a9463bead095a9e9c5d91b71aa165

Intelligence

File Origin
# of uploads :
2
# of downloads :
89
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/a251b467-50e7-4bc8-9fce-0c22fe2e192d/
Detection(s):
SecuriteInfo.com.Linux.Mirai-18.UNOFFICIAL
Create hunting rule

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade mirai packed upx
Link:
https://www.filescan.io/uploads/6969a7aa584f1963ad560059/reports/5727bfcd-b8e6-41ea-9776-646283f846ad/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-01-16T03:30:00Z UTC
Last seen:
2026-01-16T04:17:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/caf8129b8e3ce62e0d759cf516a664b60d79e01446870674ad8af1297a755f61/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/cdce7950-10e4-454d-8b2e-e36b4d5ee599
Behavior Graph:
Download SVG
%3 guuid=4220283c-1800-0000-e6b4-ad56490c0000 pid=3145 /usr/bin/sudo guuid=b7125b3e-1800-0000-e6b4-ad564f0c0000 pid=3151 /tmp/sample.bin guuid=4220283c-1800-0000-e6b4-ad56490c0000 pid=3145->guuid=b7125b3e-1800-0000-e6b4-ad564f0c0000 pid=3151 execve
Malware family:
Mirai
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7b279be9-0ef0-4185-8a52-5749070d6979
Result
Threat name:
Gafgyt
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1851809
Signature
Multi AV Scanner detection for submitted file
Sample is packed with UPX
Yara detected Gafgyt
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1851809 Sample: sumrak.arm.elf Startdate: 16/01/2026 Architecture: LINUX Score: 60 20 91.92.240.251, 1997, 33938, 33940 THEZONEBG Bulgaria 2->20 22 Multi AV Scanner detection for submitted file 2->22 24 Yara detected Gafgyt 2->24 26 Sample is packed with UPX 2->26 8 sumrak.arm.elf 2->8         started        signatures3 process4 process5 10 sumrak.arm.elf 8->10         started        12 sumrak.arm.elf 8->12         started        14 sumrak.arm.elf 8->14         started        process6 16 sumrak.arm.elf 10->16         started        18 sumrak.arm.elf 10->18         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/caf8129b8e3ce62e0d759cf516a664b60d79e01446870674ad8af1297a755f61
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/caf8129b8e3ce62e0d759cf516a664b60d79e01446870674ad8af1297a755f61/
Threat name:
Linux.Backdoor.Bushido
Create hunting rule
Status:
Malicious
First seen:
2026-01-16 02:51:23 UTC
File Type:
ELF32 Little (Exe)
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zl4bfg4ohttc4dlvtt2rnjtewygxtyaui2dqm5fnrlyss6tvl5qq._file
Result
Malware family:
n/a
Score:
  5/10
Tags:
upx
Link:
https://tria.ge/reports/260116-dcb4fadz6c/
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/7c495bbf-30d4-4cef-bcf8-f67f4c16a023
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/caf8129b8e3ce62e0d759cf516a664b60d79e01446870674ad8af1297a755f61

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 caf8129b8e3ce62e0d759cf516a664b60d79e01446870674ad8af1297a755f61

(this sample)

Mirai

elf 64ffa98464151f732c68c758eef025fe222a9463bead095a9e9c5d91b71aa165

  
URLhaus
https://urlhaus.abuse.ch/url/3758542/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 64ffa98464151f732c68c758eef025fe222a9463bead095a9e9c5d91b71aa165
  
Dropping
MD5 ca1a2f23319251c6dce2c58188710035

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