MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4d564c76fda674c3dcc01802d72c37d6176f0c382407e2428e7d05ab734ff5a. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4d564c76fda674c3dcc01802d72c37d6176f0c382407e2428e7d05ab734ff5a
SHA3-384 hash: 9305d2eab12bdd513278963e6d46879dd9d576b027fd1de6074ee5a907eb69ad901d99165753e847537c4b3f2222e085
SHA1 hash: 7d130a5b58ff9ab810232e00fdffded6669281ed
MD5 hash: fc09120994d38cdce4ce6764905fdb4d
humanhash: helium-monkey-romeo-india
File name:MK
Download: download sample
Signature Gafgyt
Create hunting rule
File size:67'976 bytes
First seen:2026-05-01 19:42:06 UTC
Last seen:2026-05-01 21:15:47 UTC
File type: elf
MIME type:application/x-executable
ssdeep 1536:m3WFb26I1keOf9w8FZlz/rEKTQzAvhXvpV3p8RLX:mm86G7Of9tl9ToAJdALX
TLSH T18D63E693FD01EFBBF40BE3BA449308057530FFAA49924A72736779A799360E41462F49
Magika elf
Reporter abuse_ch
Tags:elf gafgyt

Intelligence

File Origin
# of uploads :
2
# of downloads :
112
Origin country :
DE DE
Vendor Threat Intelligence
Gathering data
Detection(s):
Unix.Trojan.Mirai-6981989-0
Create hunting rule

Unix.Dropper.Mirai-7135944-0
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

Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
gcc
Link:
https://www.filescan.io/uploads/69f5023bdf14f1cb2ac7dab6/reports/ec0e5180-0689-450a-af44-1c6a04c95743/overview
Verdict:
Malicious
File Type:
elf.32.be
First seen:
2026-05-01T16:58:00Z UTC
Last seen:
2026-05-02T00:48:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/b4d564c76fda674c3dcc01802d72c37d6176f0c382407e2428e7d05ab734ff5a/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/54739e57-1a8d-4c24-a9c4-cd34d14e6cfc
Behavior Graph:
Download SVG
%3 guuid=6d841b25-1a00-0000-bf64-ce8e1d090000 pid=2333 /usr/bin/sudo guuid=3397b927-1a00-0000-bf64-ce8e25090000 pid=2341 /tmp/sample.bin guuid=6d841b25-1a00-0000-bf64-ce8e1d090000 pid=2333->guuid=3397b927-1a00-0000-bf64-ce8e25090000 pid=2341 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/5a0a4efb-79ec-4b39-95cd-fefaa6bb7f18
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1907488
Signature
Multi AV Scanner detection for submitted file
Opens /proc/net/* files useful for finding connected devices and routers
Reads system files that contain records of logged in users
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill a massive number of system processes
Sample tries to kill multiple processes (SIGKILL)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1907488 Sample: MK.elf Startdate: 01/05/2026 Architecture: LINUX Score: 72 57 Multi AV Scanner detection for submitted file 2->57 9 MK.elf 2->9         started        12 systemd gvfsd 2->12         started        14 systemd accounts-daemon 2->14         started        16 35 other processes 2->16 process3 signatures4 59 Opens /proc/net/* files useful for finding connected devices and routers 9->59 18 MK.elf 9->18         started        20 MK.elf 9->20         started        22 gvfsd 12->22         started        24 gvfsd gvfsd-trash 12->24         started        61 Reads system files that contain records of logged in users 14->61 26 accounts-daemon language-validate 14->26         started        63 Sample reads /proc/mounts (often used for finding a writable filesystem) 16->63 28 xfce4-panel wrapper-2.0 16->28         started        30 xfce4-panel wrapper-2.0 16->30         started        32 xfce4-panel wrapper-2.0 16->32         started        34 3 other processes 16->34 process5 process6 36 MK.elf 18->36         started        38 gvfsd gvfsd-fuse 22->38         started        40 language-validate language-options 26->40         started        42 wrapper-2.0 xfpm-power-backlight-helper 28->42         started        process7 44 MK.elf 36->44         started        47 MK.elf 36->47         started        49 gvfsd-fuse fusermount 38->49         started        51 language-options sh 40->51         started        signatures8 65 Sample tries to kill a massive number of system processes 44->65 67 Sample tries to kill multiple processes (SIGKILL) 44->67 69 Sample reads /proc/mounts (often used for finding a writable filesystem) 49->69 53 sh locale 51->53         started        55 sh grep 51->55         started        process9
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b4d564c76fda674c3dcc01802d72c37d6176f0c382407e2428e7d05ab734ff5a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b4d564c76fda674c3dcc01802d72c37d6176f0c382407e2428e7d05ab734ff5a/
Threat name:
Linux.Backdoor.Gafgyt
Create hunting rule
Status:
Malicious
First seen:
2026-05-01 19:43:39 UTC
File Type:
ELF32 Big (Exe)
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wtkwjr3p3jtuypomagac24wdpvqxn4gdqjah4jbi47ifvnzu75na._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/260501-yfcjlact7t/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.64
Link:
https://yomi.yoroi.company/submissions/b4d564c76fda674c3dcc01802d72c37d6176f0c382407e2428e7d05ab734ff5a

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:ELF_Toriilike_persist
Create hunting rule
Author:4r4
Description:Detects Torii IoT Botnet (stealthier Mirai alternative)
Reference:Identified via researched data
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 b4d564c76fda674c3dcc01802d72c37d6176f0c382407e2428e7d05ab734ff5a

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3836545/
  
Delivery method
Distributed via web download

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