MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4b836359fc366f812800c2b667b9871544ce0e57554164e9e6e0a5c8fc181d7. 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: 8


Intelligence 8 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4b836359fc366f812800c2b667b9871544ce0e57554164e9e6e0a5c8fc181d7
SHA3-384 hash: 8566bee818363bccd4dc7a6b8704a3b51de805270bfcb9e7952d4ddcbd751fe61e3b68d7e1838d8237a9eeabe4299b4a
SHA1 hash: 5fa6fa1322175be8772db64528e2e418212420ac
MD5 hash: d81736847b5ab49f70c77734b0ef6e9e
humanhash: sodium-failed-indigo-sad
File name:xnxnxnxnxnxnxnxnaarch64xnxn
Download: download sample
Signature Mirai
Create hunting rule
File size:197'584 bytes
First seen:2025-12-22 07:11:49 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:y8/0ONHIiUTRpBydTBp+ogzPeOK3+N6tNIzPx2:LPNwpBydlpRwKCzb4
TLSH T121148CA8FE4FA8D1C2C7E37DED4A0FE275177874D655C0B21A00929FD5EAED88890613
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 gafgyt mirai upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 05fae73efc1356bc66de8543d49d2b8ad09b0aa8fa8446c27dfe25a5fbac8160
File size (compressed) :68'976 bytes
File size (de-compressed) :197'584 bytes
Format:linux/arm64
Packed file: 05fae73efc1356bc66de8543d49d2b8ad09b0aa8fa8446c27dfe25a5fbac8160

Intelligence

File Origin
# of uploads :
1
# of downloads :
66
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Kills processes
Sends data to a server
Creating a file in the %temp% directory
Receives data from a server
Locks files
Runs as daemon
Deletes a file
DNS request
Substitutes an application name
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
rust
Link:
https://www.filescan.io/uploads/6948ef633f8fdbf8e94e418f/reports/f5278c82-202e-40a6-bbe4-d84d03e9d2c7/overview
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2025-12-22T04:30:00Z UTC
Last seen:
2025-12-22T05:09:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/b4b836359fc366f812800c2b667b9871544ce0e57554164e9e6e0a5c8fc181d7/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/0e4d6e1a-245c-4fcc-bc54-f2577aa409d4
Behavior Graph:
Download SVG
%3 guuid=38216e8b-1b00-0000-c9ee-b6c3a70c0000 pid=3239 /usr/bin/sudo guuid=ccde708f-1b00-0000-c9ee-b6c3a90c0000 pid=3241 /tmp/sample.bin guuid=38216e8b-1b00-0000-c9ee-b6c3a70c0000 pid=3239->guuid=ccde708f-1b00-0000-c9ee-b6c3a90c0000 pid=3241 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/4385cc75-a310-4f67-a81d-2f8996b4d92a
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1837459
Signature
Connects to many ports of the same IP (likely port scanning)
Deletes system log files
Manipulation of devices in /dev
Sample tries to kill a massive number of system processes
Sample tries to kill multiple processes (SIGKILL)
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b4b836359fc366f812800c2b667b9871544ce0e57554164e9e6e0a5c8fc181d7
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b4b836359fc366f812800c2b667b9871544ce0e57554164e9e6e0a5c8fc181d7/
Threat name:
Linux.Trojan.Gafgyt
Create hunting rule
Status:
Malicious
First seen:
2025-12-22 07:13:20 UTC
File Type:
ELF64 Little (Exe)
AV detection:
9 of 24 (37.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ws4dmnm7yntpqeuabqvwm64yofkezyhfovkbmtu6nyffzd6bqhlq._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/251222-h2ctgsft4d/
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/1dc98c46-4132-4bbc-a347-d5e5071933c3
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/b4b836359fc366f812800c2b667b9871544ce0e57554164e9e6e0a5c8fc181d7

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:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
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

sh 3f369751f1b58e23d838e25846c03bd66f8e84dc08c878ab2d58073e37b59389

Mirai

elf 05fae73efc1356bc66de8543d49d2b8ad09b0aa8fa8446c27dfe25a5fbac8160

Mirai

elf b4b836359fc366f812800c2b667b9871544ce0e57554164e9e6e0a5c8fc181d7

(this sample)

  
Dropped by
SHA256 05fae73efc1356bc66de8543d49d2b8ad09b0aa8fa8446c27dfe25a5fbac8160
  
URLhaus
https://urlhaus.abuse.ch/url/3739944/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 602e5e94ec51caed5a5262f8bbb3a00b
  
URLhaus
https://urlhaus.abuse.ch/url/3713408/

Comments