MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b83f433a97619f6c703ca9cfac127c91c759bf99f4edab83809d83855698ab4c. 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: 9


Intelligence 9 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b83f433a97619f6c703ca9cfac127c91c759bf99f4edab83809d83855698ab4c
SHA3-384 hash: 342af650161cd1c41d74047d32b213911f01663dbd6a54ae930ef512395030b4843b6e3cbe6baaab521052440eadae97
SHA1 hash: c7a7377587f0dc202719275740c912f0fde3c7a1
MD5 hash: c13d05eedf8867bcab674184095e2a50
humanhash: xray-lima-michigan-delta
File name:nwfaiehg4ewijfgriehgirehaughrarg.arm7
Download: download sample
Signature Mirai
Create hunting rule
File size:177'811 bytes
First seen:2025-08-18 16:38:37 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 3072:npoGm6qQeztpa1g5rvJ1/IR0JLEoQ8pnPkXc7SpbWM/93v0OU:poGQhpaW5rvJ140JLNpPkM7SpqM/9cJ
TLSH T1BE042B46EB414A13C4D227B6BA9B424533239B64D3EB730699287FF43F87B9E0E67501
telfhash t1f2312d34273694086a71cd64d8fc97b2851b87170684ae33cf3bc8cc281a48ae62ac0f
Magika elf
Reporter abuse_ch
Tags:elf mirai upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 f7bb8a633c8265377864422034c32c0b8ae7cbd38fca4711d30fe292e1e26091
File size (compressed) :66'936 bytes
File size (de-compressed) :177'811 bytes
Format:linux/arm
Packed file: f7bb8a633c8265377864422034c32c0b8ae7cbd38fca4711d30fe292e1e26091

Intelligence

File Origin
# of uploads :
1
# of downloads :
37
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
Unix.Dropper.Mirai-7135925-0
Create hunting rule

Unix.Trojan.Mirai-9760303-0
Create hunting rule

Unix.Trojan.Mirai-10056451-0
Create hunting rule

Unix.Trojan.Mirai-10056463-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Changes access rights for a file
Runs as daemon
Changes access rights for a written file
Sends data to a server
Connection attempt
Substitutes an application name
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/15b01e82-7d6c-4ecd-a0cf-948caa743fab
Behavior Graph:
Download SVG
%3 guuid=1b85aa3c-1b00-0000-db17-2cacf80c0000 pid=3320 /usr/bin/sudo guuid=65beb83f-1b00-0000-db17-2cacfe0c0000 pid=3326 /tmp/sample.bin guuid=1b85aa3c-1b00-0000-db17-2cacf80c0000 pid=3320->guuid=65beb83f-1b00-0000-db17-2cacfe0c0000 pid=3326 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d5e921e7-27be-432c-af4b-c3a9495fa4fb
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1759509
Signature
Deletes system log files
Manipulation of devices in /dev
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1759509 Sample: nwfaiehg4ewijfgriehgirehaug... Startdate: 18/08/2025 Architecture: LINUX Score: 60 25 anranapi.xyz 2->25 27 169.254.169.254, 80 USDOSUS Reserved 2->27 29 2 other IPs or domains 2->29 31 Multi AV Scanner detection for submitted file 2->31 10 nwfaiehg4ewijfgriehgirehaughrarg.arm7.elf 2->10         started        12 python3.8 dpkg 2->12         started        signatures3 33 Performs DNS queries to domains with low reputation 25->33 process4 process5 14 nwfaiehg4ewijfgriehgirehaughrarg.arm7.elf 10->14         started        process6 16 nwfaiehg4ewijfgriehgirehaughrarg.arm7.elf 14->16         started        process7 18 nwfaiehg4ewijfgriehgirehaughrarg.arm7.elf 16->18         started        process8 20 nwfaiehg4ewijfgriehgirehaughrarg.arm7.elf 18->20         started        23 nwfaiehg4ewijfgriehgirehaughrarg.arm7.elf 18->23         started        signatures9 35 Manipulation of devices in /dev 20->35 37 Deletes system log files 20->37
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/b83f433a97619f6c703ca9cfac127c91c759bf99f4edab83809d83855698ab4c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b83f433a97619f6c703ca9cfac127c91c759bf99f4edab83809d83855698ab4c/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-08-18 16:39:45 UTC
File Type:
ELF32 Little (Exe)
AV detection:
20 of 38 (52.63%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xa7ugouxmgpwy4b4vhh2yet4shdvtp4z6tw2xa4atwbykvuyvnga._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai defense_evasion discovery
Link:
https://tria.ge/reports/250818-t563aaan6s/
Behaviour
Reads runtime system information
Changes its process name
Creates a large amount of network flows
Deletes log files
Enumerates running processes
Deletes Audit logs
Deletes system logs
Verdict:
Malicious
Tags:
Unix.Dropper.Mirai-7135925-0
YARA:
n/a
Link:
https://app.threat.zone/submission/16757bc8-5e75-47c4-b76e-acce7c60eabb
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/b83f433a97619f6c703ca9cfac127c91c759bf99f4edab83809d83855698ab4c

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:Linux_Generic_Threat_8299c877
Create hunting rule
Author:Elastic Security
Rule name:MAL_ARM_LNX_Mirai_Mar13_2022
Create hunting rule
Author:Mehmet Ali Kerimoglu a.k.a. CYB3RMX
Description:Detects new ARM Mirai variant
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
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 f7bb8a633c8265377864422034c32c0b8ae7cbd38fca4711d30fe292e1e26091

Mirai

elf b83f433a97619f6c703ca9cfac127c91c759bf99f4edab83809d83855698ab4c

(this sample)

  
Dropped by
SHA256 f7bb8a633c8265377864422034c32c0b8ae7cbd38fca4711d30fe292e1e26091
  
URLhaus
https://urlhaus.abuse.ch/url/3606039/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3606053/
  
URLhaus
https://urlhaus.abuse.ch/url/3606062/
  
Dropped by
MD5 8bed72e512a62c652529d69d069da09e

Comments