MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b81a71fa2b2a01e87b9c21d293665235cf359e86676acb66dbe2fe4f5a931610. 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: 7


Intelligence 7 IOCs YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b81a71fa2b2a01e87b9c21d293665235cf359e86676acb66dbe2fe4f5a931610
SHA3-384 hash: e1b502c9daa9490bfabfc8ef717578c3f2b353fec1a6f03b0f4a291adde550cb8081cff7bd6c04b445dbdcfab511e271
SHA1 hash: 1f74b39e7801d893995c638cbd0699f75fa68b61
MD5 hash: 384755a505dc1fb974ff4ac5f3132f3c
humanhash: september-massachusetts-fanta-five
File name:a-r.m-7.Sakura
Download: download sample
Signature Gafgyt
Create hunting rule
File size:115'122 bytes
First seen:2026-08-11 09:43:56 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:Y+PrNZ+s+uJSuR5oHtDJdBRmnK0PDrO7fFOo:Y+PrNZIuJPzsJJdBRmnK0PDrO7fFOo
TLSH T132B33A13B71C0B53C4975AF129BB3BF197A9B9E112966285A50AFFC01373DF02422F99
telfhash t1f621eb0371eaca296bb356246cb842b112a56a333391be71bf1dc4c494370027974ecb
Magika elf
Reporter abuse_ch
Tags:elf gafgyt mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
53
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.Siggen.2205.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.29052.TSource.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.29325.LC.Pl.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Linux.Mirai-81.UNOFFICIAL
Create hunting rule

Unix.Dropper.Mirai-7138865-0
Create hunting rule

Unix.Dropper.Mirai-7138907-0
Create hunting rule

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

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

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

Unix.Trojan.Mirai-9943729-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sends data to a server
Receives data from a server
Runs as daemon
Collects information on the CPU
Connection attempt
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
gcc
Link:
https://www.filescan.io/uploads/6a7aef2f086bfd23460e5c33/reports/57649c03-be3f-4496-a4f6-de0558b35462/overview
Verdict:
Malicious
File Type:
elf.32.be
First seen:
2026-08-11T07:35:00Z UTC
Last seen:
2026-08-12T03:41:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/b81a71fa2b2a01e87b9c21d293665235cf359e86676acb66dbe2fe4f5a931610/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/f9845ed0-ce70-43a8-bd4d-d12743fabec0
Behavior Graph:
Download SVG
%3 guuid=cf8e9450-1a00-0000-32a3-a39dfc080000 pid=2300 /usr/bin/sudo guuid=a9f78154-1a00-0000-32a3-a39d05090000 pid=2309 /tmp/sample.bin guuid=cf8e9450-1a00-0000-32a3-a39dfc080000 pid=2300->guuid=a9f78154-1a00-0000-32a3-a39d05090000 pid=2309 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/fb136267-4ece-4609-9c92-abafbf22c3ce
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b81a71fa2b2a01e87b9c21d293665235cf359e86676acb66dbe2fe4f5a931610
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b81a71fa2b2a01e87b9c21d293665235cf359e86676acb66dbe2fe4f5a931610/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-08-11 09:47:30 UTC
File Type:
ELF32 Big (Exe)
AV detection:
22 of 36 (61.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xanhd6rlfia6q644ehjjgzssgxhtlhugm5vmwzw34l7e6wutcyia._file
Result
Malware family:
gafgyt
Create hunting rule
Score:
  10/10
Tags:
family:gafgyt botnet linux
Link:
https://tria.ge/reports/260811-lqwn1azhkb/
Malware Config
C2 Extraction:
23.251.34.31:5555
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/b81a71fa2b2a01e87b9c21d293665235cf359e86676acb66dbe2fe4f5a931610

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:botnet_dayzddos
Create hunting rule
Author:NDA0E
Description:dayzddos botnet
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:Linux_Trojan_Gafgyt_28a2fe0c
Create hunting rule
Author:Elastic Security
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 b81a71fa2b2a01e87b9c21d293665235cf359e86676acb66dbe2fe4f5a931610

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3901472/
  
Delivery method
Distributed via web download

Comments