MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a73d16d750858b857050257d6235ba682fe492ccc4bc6dd5efdd2600901ec4a2. 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: 10


Intelligence 10 IOCs YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a73d16d750858b857050257d6235ba682fe492ccc4bc6dd5efdd2600901ec4a2
SHA3-384 hash: a794ec60d69d19cee391c54c93b2494b60596b81927dcde5113b8e34cb7db884cbdbc5221f521dc97602ca08f3297c24
SHA1 hash: 87bc947bbaef2196f0b38cbac99eff37654ad6fe
MD5 hash: 5b633b5bd712e3c82826fa88437e49fe
humanhash: magnesium-yellow-golf-yankee
File name:krfk64
Download: download sample
Signature Mirai
Create hunting rule
File size:139'624 bytes
First seen:2025-01-23 20:21:36 UTC
Last seen:2025-01-24 17:35:35 UTC
File type: elf
MIME type:application/x-executable
ssdeep 3072:kuWrj4VcD/oIfLFKtwVG/TNxDYnnk//p3fXM:urj45y3AkUfc
TLSH T18ED34A1771D080FDC8D9C1B48FEAF236D972B42D5238B21E2798EA262E5DE305F6D650
telfhash t18351bb7035563de471e7ba2ab34ad625d83a0a7250e132e2ca727cf5de61bc10d72437
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 mirai

Intelligence

File Origin
# of uploads :
2
# of downloads :
244
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.30423.LX.BOT.UNOFFICIAL
Create hunting rule

Unix.Dropper.Mirai-7540662-0
Create hunting rule

Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
DNS request
Kills processes
Sends data to a server
Opens a port
Creating a file
Runs as daemon
Traces processes
Substitutes an application name
Deleting of the original file
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
bash lolbin remote
Link:
https://www.filescan.io/uploads/6792a4f13d654e5f56c79761/reports/b6109da1-2fc1-499f-9c0d-47debddcad87/overview
Result
Verdict:
UNKNOWN
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7016307f-ac6a-4356-ac74-1bbf72173e69
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1598044
Signature
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Reads system files that contain records of logged in users
Sample deletes itself
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill multiple processes (SIGKILL)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1598044 Sample: krfk64.elf Startdate: 23/01/2025 Architecture: LINUX Score: 76 79 109.202.202.202, 80 INIT7CH Switzerland 2->79 81 162.213.35.25, 443, 53278 CANONICAL-ASGB United States 2->81 83 3 other IPs or domains 2->83 87 Malicious sample detected (through community Yara rule) 2->87 89 Multi AV Scanner detection for submitted file 2->89 91 Machine Learning detection for sample 2->91 11 systemd gdm3 2->11         started        13 krfk64.elf 2->13         started        16 systemd gpu-manager 2->16         started        18 29 other processes 2->18 signatures3 process4 file5 21 gdm3 gdm-session-worker 11->21         started        34 3 other processes 11->34 97 Sample deletes itself 13->97 23 krfk64.elf 13->23         started        26 gpu-manager sh 16->26         started        28 gpu-manager sh 16->28         started        30 gpu-manager sh 16->30         started        36 5 other processes 16->36 77 /var/log/wtmp, data 18->77 dropped 99 Sample reads /proc/mounts (often used for finding a writable filesystem) 18->99 101 Reads system files that contain records of logged in users 18->101 32 accounts-daemon language-validate 18->32         started        38 2 other processes 18->38 signatures6 process7 signatures8 40 gdm-session-worker gdm-wayland-session 21->40         started        93 Sample tries to kill multiple processes (SIGKILL) 23->93 42 krfk64.elf 23->42         started        55 2 other processes 23->55 45 sh grep 26->45         started        47 sh grep 28->47         started        49 sh grep 30->49         started        51 language-validate language-options 32->51         started        53 sh grep 36->53         started        57 4 other processes 36->57 process9 signatures10 59 gdm-wayland-session dbus-run-session 40->59         started        61 gdm-wayland-session dbus-daemon 40->61         started        95 Sample tries to kill multiple processes (SIGKILL) 42->95 64 language-options sh 51->64         started        process11 signatures12 66 dbus-run-session dbus-daemon 59->66         started        103 Sample reads /proc/mounts (often used for finding a writable filesystem) 61->103 69 dbus-daemon 61->69         started        71 sh locale 64->71         started        73 sh grep 64->73         started        process13 signatures14 85 Sample reads /proc/mounts (often used for finding a writable filesystem) 66->85 75 dbus-daemon false 69->75         started        process15
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a73d16d750858b857050257d6235ba682fe492ccc4bc6dd5efdd2600901ec4a2
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a73d16d750858b857050257d6235ba682fe492ccc4bc6dd5efdd2600901ec4a2/
Threat name:
Linux.Trojan.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-01-23 20:22:06 UTC
File Type:
ELF64 Little (Exe)
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=u46rnv2qqwfyk4cqev6wenn2nax6jewmys6g3vpp3utabea6ysra._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai linux
Link:
https://tria.ge/reports/250123-y5jzzasjcw/
Behaviour
Writes file to tmp directory
Changes its process name
Deletes itself
Traces itself
Malware Config
C2 Extraction:
raw.awaken-network.net
Verdict:
Malicious
Tags:
trojan gafgyt Unix.Dropper.Mirai-7540662-0
YARA:
Linux_Trojan_Gafgyt_9e9530a7 Linux_Trojan_Gafgyt_807911a2 Linux_Trojan_Gafgyt_d4227dbf Linux_Trojan_Gafgyt_d996d335 Linux_Trojan_Gafgyt_d0c57a2e Linux_Trojan_Gafgyt_620087b9 Linux_Trojan_Gafgyt_0cd591cd Linux_Trojan_Gafgyt_33b4111a Linux_Trojan_Gafgyt_a33a8363
Link:
https://app.threat.zone/submission/edb886ff-053c-4fc7-bcf1-2ad508a20f3d
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Mirai
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/a73d16d750858b857050257d6235ba682fe492ccc4bc6dd5efdd2600901ec4a2

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_Mirai
Create hunting rule
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:Linux_Trojan_Gafgyt_0cd591cd
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_33b4111a
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_620087b9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_807911a2
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_9e9530a7
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_a33a8363
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d0c57a2e
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d4227dbf
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Gafgyt_d996d335
Create hunting rule
Author:Elastic Security
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

Mirai

elf a73d16d750858b857050257d6235ba682fe492ccc4bc6dd5efdd2600901ec4a2

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3409465/
  
Delivery method
Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh

Comments