MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a523f7af291965f2a522e12f1186f1146dd02b100720256f7dbd281ad941cc3d. 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: 5


Intelligence 5 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a523f7af291965f2a522e12f1186f1146dd02b100720256f7dbd281ad941cc3d
SHA3-384 hash: 7ff31d042ad684653a0f0578b7bc5981a5bb33074af5a1169eee429c90be9f4d81fa798b6a8793bed30821745df66b5f
SHA1 hash: 9b24a478cbbd1ceb441dfddb74a5268c96eab322
MD5 hash: ccf234c4563519eb53835ddac86de7df
humanhash: lima-eight-venus-nine
File name:catgirl.armv7b
Download: download sample
Signature Mirai
Create hunting rule
File size:91'452 bytes
First seen:2026-02-07 19:06:21 UTC
Last seen:2026-02-07 20:07:06 UTC
File type: elf
MIME type:application/x-sharedlib
ssdeep 1536:7E7UuUyPhEQt4covBlOb6MUT32y2XOO6ynlAPiopHMbHIk9+qi5dLcIPQrD:7oO+EDnBlO2MzwO3nlAPpUkdc6oD
TLSH T1EB930855F850DA62C6D4267AFB5E538C33131F74C2DD72068D14AB3477EA95A0F3B882
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
2
# of downloads :
40
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Result
Gathering data
Verdict:
Unknown
File Type:
elf.32.be
First seen:
2026-01-31T19:25:00Z UTC
Last seen:
2026-02-01T08:47:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/a523f7af291965f2a522e12f1186f1146dd02b100720256f7dbd281ad941cc3d/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/b434f9f8-9578-4603-8ab9-60d4da2b235b
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
68 / 100
Link:
https://www.joesandbox.com/analysis/1865353
Signature
Connects to many ports of the same IP (likely port scanning)
Drops files in suspicious directories
Multi AV Scanner detection for submitted file
Sample deletes itself
Sample tries to persist itself using cron
Sample tries to persist itself using System V runlevels
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a523f7af291965f2a522e12f1186f1146dd02b100720256f7dbd281ad941cc3d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a523f7af291965f2a522e12f1186f1146dd02b100720256f7dbd281ad941cc3d/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-28 01:51:57 UTC
File Type:
ELF32 Big (SO)
AV detection:
12 of 36 (33.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uur7plzjdfs7fjjc4exrdbxrcrw5akyqa4qck335xuubvwkbzq6q._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/260207-xsqrbaav2h/
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/a523f7af291965f2a522e12f1186f1146dd02b100720256f7dbd281ad941cc3d

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:elf_arm_mips_ko_so
Create hunting rule
Rule name:ELF_IoT_Persistence_Hunt
Create hunting rule
Author:4r4
Description:Hunts for ELF files with persistence and download capabilities
Rule name:F01_s1ckrule
Create hunting rule
Author:s1ckb017
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
Rule name:upx_antiunpack_elf32
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:UPX Anti-Unpacking technique to magic renamed for ELF32

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Mirai

elf a523f7af291965f2a522e12f1186f1146dd02b100720256f7dbd281ad941cc3d

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3774053/
  
Delivery method
Distributed via web download

Comments