MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f75794feb9b60d0ea2bcab19e35114529c67014ee7005fff66ac1fc1886317f1. 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


Gafgyt


Vendor detections: 9


Intelligence 9 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f75794feb9b60d0ea2bcab19e35114529c67014ee7005fff66ac1fc1886317f1
SHA3-384 hash: 1fd2fc8cc0e56d685571f8ec707420583829d1c478f8afcb3a50c4f5e304defcf1a9f0a47fc1ab8e705461f89f07c8bd
SHA1 hash: 99e5afd71f6a772c5a8189693f595f271c52d0c5
MD5 hash: 9067274c0a81d595c7196de9141849f0
humanhash: single-hamper-whiskey-bluebird
File name:katrina
Download: download sample
Signature Gafgyt
Create hunting rule
File size:132'168 bytes
First seen:2025-08-15 13:52:24 UTC
Last seen:2025-08-15 14:24:07 UTC
File type: elf
MIME type:application/x-executable
ssdeep 3072:kmb/On5wSONopVNK53tJ2832/R7BywdAUKzmH/5tBZsQVDep5z:nJxiE/48m/jywrKzmH/5tBZsQVDepZ
TLSH T1B2D31993F900EFAAF00BD77644D34A24B230BF660E531666B21739A7AE361D43827F45
telfhash t1f9317622997943282ff79d28bcad46b311126b2353663f72af76c5cc44260a1e539d4f
Magika elf
Reporter abuse_ch
Tags:elf gafgyt

Intelligence

File Origin
# of uploads :
2
# of downloads :
82
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Unix.Trojan.Mirai-6981989-0
Create hunting rule

Unix.Dropper.Mirai-7139229-0
Create hunting rule

Unix.Downloader.Mirai-7340346-0
Create hunting rule

Unix.Trojan.Gafgyt-7782058-0
Create hunting rule

Unix.Trojan.Mirai-9940650-0
Create hunting rule

Unix.Trojan.Mirai-10018298-0
Create hunting rule

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

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
gcc lolbin obfuscated remote threat
Link:
https://www.filescan.io/uploads/689f3ba3abfbaec3182385c5/reports/619e0361-2158-40a7-8b2a-d1874ca4f30e/overview
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/32d0fbd6-4cca-4abc-993d-7b4a3510d0b2
Result
Threat name:
Gafgyt
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1757895
Signature
Connects to many ports of the same IP (likely port scanning)
Contains symbols with names commonly found in malware
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: 1757895 Sample: katrina.elf Startdate: 15/08/2025 Architecture: LINUX Score: 72 45 206.123.128.67, 65481 LEASEWEB-USA-NYC-11US United States 2->45 47 169.254.169.254, 80 USDOSUS Reserved 2->47 49 daisy.ubuntu.com 2->49 51 Multi AV Scanner detection for submitted file 2->51 53 Yara detected Gafgyt 2->53 55 Connects to many ports of the same IP (likely port scanning) 2->55 57 Contains symbols with names commonly found in malware 2->57 9 katrina.elf 2->9         started        12 python3.8 dpkg 2->12         started        signatures3 process4 signatures5 59 Opens /proc/net/* files useful for finding connected devices and routers 9->59 14 katrina.elf 9->14         started        16 katrina.elf 9->16         started        18 katrina.elf 9->18         started        process6 process7 20 katrina.elf sh 14->20         started        22 katrina.elf sh 14->22         started        24 katrina.elf sh 14->24         started        28 21 other processes 14->28 26 katrina.elf 16->26         started        process8 30 sh killall 20->30         started        33 sh killall 22->33         started        35 sh killall 24->35         started        37 sh killall 28->37         started        39 sh killall 28->39         started        41 sh killall 28->41         started        43 18 other processes 28->43 signatures9 61 Terminates several processes with shell command 'killall' 30->61
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/f75794feb9b60d0ea2bcab19e35114529c67014ee7005fff66ac1fc1886317f1
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f75794feb9b60d0ea2bcab19e35114529c67014ee7005fff66ac1fc1886317f1/
Verdict:
Malicious
Threat:
HEUR:Backdoor.Linux.Gafgyt
Link:
https://tip.neiki.dev/file/f75794feb9b60d0ea2bcab19e35114529c67014ee7005fff66ac1fc1886317f1
Threat name:
Linux.Backdoor.Bashlite
Create hunting rule
Status:
Malicious
First seen:
2025-08-15 12:37:48 UTC
File Type:
ELF32 Big (Exe)
AV detection:
13 of 23 (56.52%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=65lzj7vzwygq5iv4vmm6guiukkogoako44af773gvqp4dcddc7yq._file
Result
Malware family:
gafgyt
Create hunting rule
Score:
  10/10
Tags:
family:gafgyt linux
Link:
https://tria.ge/reports/250815-q68eysbk8z/
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-6981989-0
YARA:
n/a
Link:
https://app.threat.zone/submission/1978d72a-7e1d-4c98-84be-4a06d39020d7
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/f75794feb9b60d0ea2bcab19e35114529c67014ee7005fff66ac1fc1886317f1

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_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Mal_LNX_Gafgyt_Botnet_ELF
Create hunting rule
Author:Phatcharadol Thangplub
Description:Use to detect Gafgyt botnet, and there variants.
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

Gafgyt

elf f75794feb9b60d0ea2bcab19e35114529c67014ee7005fff66ac1fc1886317f1

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3576539/
  
Delivery method
Distributed via web download

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