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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 661a9eb7b6ff21f7e4e2e3f389ca8a06e3b3ca7117df71dd29232a799d4c80f5. 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: 8


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

SHA256 hash: 661a9eb7b6ff21f7e4e2e3f389ca8a06e3b3ca7117df71dd29232a799d4c80f5
SHA3-384 hash: 22f049f1cdfb38e707101d9d256d5c6ab1bde0f81b8562d413010080bb65cb40975bf3c699569700c260ff4035503073
SHA1 hash: fb2fba6325ddf0da10cd42b22937da2018f33c77
MD5 hash: eb8271f4188bff5630113c61391d65df
humanhash: skylark-tango-mobile-yellow
File name:ext4
Download: download sample
Signature Gafgyt
Create hunting rule
File size:105'160 bytes
First seen:2026-09-15 06:10:05 UTC
Last seen:2026-09-15 12:21:00 UTC
File type: elf
MIME type:application/x-executable
ssdeep 3072:yVELdGE+bhbckf3Ziq0utD7mzDjMz/Zxmhh7z5:AEz+bpck/ZiQsDjMz/Zxmhh7z5
TLSH T16FA35C53B71D1B43C09B99F02DBB37F087A9F9B002A36180650EEEC05777AB42526F69
telfhash t1fe210042b6be8a282ff24a28ac7c07f025516a2373817e70ef5ec5c41537006b565e9f
Magika elf
Reporter abuse_ch
Tags:elf gafgyt

Intelligence

File Origin
# of uploads :
2
# of downloads :
51
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.30541.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.32133.LX.BOT.UNOFFICIAL
Create hunting rule

Unix.Dropper.Mirai-7139232-0
Create hunting rule

Unix.Trojan.Gafgyt-7643791-0
Create hunting rule

Unix.Trojan.Mirai-7688276-0
Create hunting rule

Unix.Trojan.Gafgyt-9396656-0
Create hunting rule

Unix.Trojan.Gafgyt-9875100-0
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6aa8e157dc0329f10a1f1416/reports/6fcc3c1a-c0f4-4a4f-9ad4-fe2ba808546b/overview
Verdict:
Malicious
File Type:
elf.32.be
First seen:
2026-09-13T13:24:00Z UTC
Last seen:
2026-09-13T13:44:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/661a9eb7b6ff21f7e4e2e3f389ca8a06e3b3ca7117df71dd29232a799d4c80f5/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/04db4f41-dcf6-46a5-863e-e3114889c859
Behavior Graph:
Download SVG
%3 guuid=a5ad660d-1c00-0000-9eb5-822760090000 pid=2400 /usr/bin/sudo guuid=3e0fa014-1c00-0000-9eb5-822769090000 pid=2409 /tmp/sample.bin guuid=a5ad660d-1c00-0000-9eb5-822760090000 pid=2400->guuid=3e0fa014-1c00-0000-9eb5-822769090000 pid=2409 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/60c44969-255d-4077-9ff4-0ac33d7c66ce
Result
Threat name:
Gafgyt, Mirai
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1973000
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains symbols with names commonly found in malware
Drops files in suspicious directories
Drops invisible ELF files
Found malware configuration
Modifies the '.bashrc' or '.bash_profile' file typically for persisting actions
Multi AV Scanner detection for submitted file
Opens /proc/net/* files useful for finding connected devices and routers
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to access files in /etc/config/ (typical for OpenWRT routers)
Sample tries to kill multiple processes (SIGKILL)
Sample tries to persist itself using /etc/profile
Sample tries to persist itself using cron
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Yara detected Gafgyt
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1973000 Sample: ext4.elf Startdate: 15/09/2026 Architecture: LINUX Score: 100 113 64.89.160.222, 55487, 56166 GHOSTYNETWORKSUS Luxembourg 2->113 115 192.74.80.114, 23, 2323 DNIC-AS-00749-UnitedStatesDepartmentofDefenseDoDUS United States 2->115 117 daisy.ubuntu.com 91.189.95.56, 35980, 443 CANONICAL-ASGB United Kingdom 2->117 121 Found malware configuration 2->121 123 Antivirus detection for dropped file 2->123 125 Antivirus / Scanner detection for submitted sample 2->125 127 4 other signatures 2->127 13 ext4.elf 2->13         started        16 systemd gpu-manager 2->16         started        18 systemd gpu-manager 2->18         started        20 166 other processes 2->20 signatures3 process4 signatures5 143 Opens /proc/net/* files useful for finding connected devices and routers 13->143 22 ext4.elf 13->22         started        24 gpu-manager sh 16->24         started        26 gpu-manager sh 16->26         started        34 6 other processes 16->34 36 8 other processes 18->36 145 Sample reads /proc/mounts (often used for finding a writable filesystem) 20->145 28 gpu-manager sh 20->28         started        30 gpu-manager sh 20->30         started        32 gpu-manager sh 20->32         started        38 132 other processes 20->38 process6 process7 40 ext4.elf 22->40         started        44 sh grep 24->44         started        46 sh grep 26->46         started        48 sh grep 28->48         started        50 sh grep 30->50         started        52 sh grep 32->52         started        54 6 other processes 34->54 56 8 other processes 36->56 58 90 other processes 38->58 file8 105 /var/spool/cron/crontabs/root, ASCII 40->105 dropped 107 /root/.bashrc, ASCII 40->107 dropped 109 /root/.bash_profile, ASCII 40->109 dropped 111 7 other malicious files 40->111 dropped 135 Sample tries to set files in /etc globally writable 40->135 137 Sample tries to persist itself using /etc/profile 40->137 139 Drops files in suspicious directories 40->139 141 4 other signatures 40->141 60 ext4.elf sh 40->60         started        62 ext4.elf sh 40->62         started        64 ext4.elf sh 40->64         started        66 4 other processes 40->66 signatures9 process10 signatures11 69 sh at 60->69         started        73 sh 60->73         started        75 sh cp 62->75         started        77 sh chmod 62->77         started        79 sh update-rc.d 64->79         started        119 Sample tries to kill multiple processes (SIGKILL) 66->119 81 sh systemctl 66->81         started        83 sh 66->83         started        process12 file13 99 /var/spool/cron/atjobs/a0000101c714df, POSIX 69->99 dropped 101 /var/spool/cron/atjobs/.SEQ, ASCII 69->101 dropped 129 Sample tries to persist itself using cron 69->129 103 /tmp/.kworker, ELF 75->103 dropped 131 Drops invisible ELF files 75->131 133 Sample tries to persist itself using System V runlevels 79->133 85 update-rc.d systemctl 79->85         started        87 systemctl systemd-sysv-install 81->87         started        signatures14 process15 process16 89 systemd-sysv-install update-rc.d 87->89         started        91 systemd-sysv-install update-rc.d 87->91         started        93 systemd-sysv-install getopt 87->93         started        process17 95 update-rc.d systemctl 89->95         started        97 update-rc.d systemctl 91->97         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/661a9eb7b6ff21f7e4e2e3f389ca8a06e3b3ca7117df71dd29232a799d4c80f5
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/661a9eb7b6ff21f7e4e2e3f389ca8a06e3b3ca7117df71dd29232a799d4c80f5/
Threat name:
Linux.Trojan.LnxGafgyt
Create hunting rule
Status:
Malicious
First seen:
2026-09-14 01:58:17 UTC
File Type:
ELF32 Big (Exe)
AV detection:
23 of 36 (63.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mynj5n5w74q7pzhc4pzytsuka3r3hstrc7pxdxjjemvhthkmqd2q._file
Result
Malware family:
gafgyt
Create hunting rule
Score:
  10/10
Tags:
family:gafgyt botnet linux
Link:
https://tria.ge/reports/260915-gw92csdj5w/
Malware Config
C2 Extraction:
64.89.160.222:55487
Please note that we are no longer able to provide a coverage score for Virus Total.

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:ELF_IoT_Persistence_Hunt
Create hunting rule
Author:4r4
Description:Hunts for ELF files with persistence and download capabilities
Rule name:ELF_Toriilike_persist
Create hunting rule
Author:4r4
Description:Detects Torii IoT Botnet (stealthier Mirai alternative)
Reference:Identified via researched data
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:TH_Generic_MassHunt_Linux_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Generic Linux malware mass-hunt rule - 2026
Reference:https://cyfare.net/
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 661a9eb7b6ff21f7e4e2e3f389ca8a06e3b3ca7117df71dd29232a799d4c80f5

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3916725/
  
Delivery method
Distributed via web download

Comments