MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 858af8cba31f33905f8aa6bd9e63c8de72687a47621371e290fbc28ced58068c. 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: 11


Intelligence 11 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 858af8cba31f33905f8aa6bd9e63c8de72687a47621371e290fbc28ced58068c
SHA3-384 hash: 0068fdfe418c1a827a96c80dcb8e0634d8c0334bcdf69873f27308f554264cb06ead49411fbf23909f60eec8fa2313ed
SHA1 hash: df7a907320c18fe35c664f2ff99ae74e75df474a
MD5 hash: 299dd36ad0414099e7afc6960b7eb13c
humanhash: cat-charlie-sierra-bravo
File name:w5c9u4xf
Download: download sample
Signature Mirai
Create hunting rule
File size:83'600 bytes
First seen:2025-12-20 18:13:21 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:xp8qEknpXLVUkN7lW4HIWRawsK2oXcK6W2EFI9z:hEkp7VU07lBgXK7XX6Tx
TLSH T16F8329C1BA8BC4F6D80748304067F33FCB32E53940A6D75DEF6A9E26D9376416B16289
telfhash t11a3104bb0a760de8e3e1e400871e6b55595de67b28703bb24563d53423aeec240fbd38
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 upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 e89451bf15b4bf89fe666b83e2a3318162569344c6f238c14f37a2515ed82607
File size (compressed) :40'520 bytes
File size (de-compressed) :83'600 bytes
Format:linux/i386
Packed file: e89451bf15b4bf89fe666b83e2a3318162569344c6f238c14f37a2515ed82607

Intelligence

File Origin
# of uploads :
1
# of downloads :
38
Origin country :
NL NL
Vendor Threat Intelligence
Malware configuration found for:
Mirai
Details
Mirai
an XOR decryption key and at least a c2 socket address
Link:
https://research.acce.ciphertechsolutions.com/results/7c8c6b19-134a-4aee-ad7a-fff094a3609d/
Detection(s):
SecuriteInfo.com.Linux.Siggen.9999-14.UNOFFICIAL
Create hunting rule

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

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

Unix.Trojan.Mirai-10057788-0
Create hunting rule

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
mirai
Link:
https://www.filescan.io/uploads/6946e7733f8fdbf8e94d1854/reports/44a26418-52f4-419e-9a78-92bed560c01f/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-12-20T16:24:00Z UTC
Last seen:
2025-12-20T17:20:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/858af8cba31f33905f8aa6bd9e63c8de72687a47621371e290fbc28ced58068c/results?tab=lookup
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5120bd8c-6a18-4fb6-9e17-da27a98c7d69
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1836812
Signature
Deletes system log files
Malicious sample detected (through community Yara rule)
Manipulation of devices in /dev
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1836812 Sample: w5c9u4xf.elf Startdate: 20/12/2025 Architecture: LINUX Score: 64 29 latinashosting.com 94.156.152.67, 12121, 56696, 56698 NET1-ASBG Bulgaria 2->29 31 109.202.202.202, 80 INIT7CH Switzerland 2->31 33 3 other IPs or domains 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Multi AV Scanner detection for submitted file 2->37 10 w5c9u4xf.elf 2->10         started        12 dash rm 2->12         started        14 dash cut 2->14         started        16 8 other processes 2->16 signatures3 process4 process5 18 w5c9u4xf.elf 10->18         started        process6 20 w5c9u4xf.elf 18->20         started        process7 22 w5c9u4xf.elf 20->22         started        process8 24 w5c9u4xf.elf 22->24         started        27 w5c9u4xf.elf 22->27         started        signatures9 39 Manipulation of devices in /dev 24->39 41 Deletes system log files 24->41
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/858af8cba31f33905f8aa6bd9e63c8de72687a47621371e290fbc28ced58068c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/858af8cba31f33905f8aa6bd9e63c8de72687a47621371e290fbc28ced58068c/
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-12-20 18:14:11 UTC
File Type:
ELF32 Little (Exe)
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qwfprs5dd4zzax4ku26z4y6i3zzgq6shmijxdyuq7pbiz3kya2ga._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai defense_evasion discovery linux
Link:
https://tria.ge/reports/251220-wt1ggady4g/
Behaviour
Reads runtime system information
Changes its process name
Deletes log files
Enumerates running processes
Deletes Audit logs
Deletes journal logs
Deletes system logs
Verdict:
Malicious
Tags:
trojan mirai Unix.Trojan.Mirai-10056451-0
YARA:
Linux_Trojan_Mirai_268aac0b Linux_Trojan_Mirai_0cb1699c Linux_Trojan_Mirai_70ef58f1 Linux_Trojan_Mirai_485c4b13 Linux_Trojan_Mirai_2e3f67a9 Linux_Trojan_Mirai_0d73971c Linux_Trojan_Mirai_88de437f Linux_Trojan_Mirai_cc93863b
Link:
https://app.threat.zone/submission/e20217d4-2b7b-4093-a57a-c62b7804b57a
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.20
Link:
https://yomi.yoroi.company/submissions/858af8cba31f33905f8aa6bd9e63c8de72687a47621371e290fbc28ced58068c

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_Trojan_Mirai_0cb1699c
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_0d73971c
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_268aac0b
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_2e3f67a9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_485c4b13
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_70ef58f1
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_88de437f
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_cc93863b
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 e89451bf15b4bf89fe666b83e2a3318162569344c6f238c14f37a2515ed82607

Mirai

elf 858af8cba31f33905f8aa6bd9e63c8de72687a47621371e290fbc28ced58068c

(this sample)

  
Dropped by
SHA256 e89451bf15b4bf89fe666b83e2a3318162569344c6f238c14f37a2515ed82607
  
URLhaus
https://urlhaus.abuse.ch/url/3738279/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 2fa7afd9feb0d958b870733b9f9a3a63

Comments