MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31f8fa7aa1d924ecd3453607b4c6f48db5def0d683325163f1a04613fbd6ea33. 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 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 31f8fa7aa1d924ecd3453607b4c6f48db5def0d683325163f1a04613fbd6ea33
SHA3-384 hash: d364e57f68812cd0f4f5f36161980b03453addf90b6369330d174aa9c030f445ea07af495cec78b3ffb7295006bef754
SHA1 hash: 8359460b543eb33091c2868ca3c09a97ec58aee3
MD5 hash: 55e15a8af110ae6a40bc4f50aee38baf
humanhash: wolfram-paris-solar-virginia
File name:x86
Download: download sample
Signature Mirai
Create hunting rule
File size:79'280 bytes
First seen:2026-01-21 15:44:32 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:wp6kfm+q4sX4YFAO+PxV9T8x/ReOSpwPH5oyhg35f9kfzM4NSNTQ1SP1:wAkfm+q4S4YFl+5V18pPyye3h9uIv71
TLSH T1E1737CC6F643D0F4FC570470207BE7375A32E1FA1129EA43D7A89A72EC56602E616B9C
telfhash t1ef31e9f71abd0decabd46840c31e2b50655ed7bb596032a28163dc25326fdc290bac7d
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 b1eca05ac8f0dca29557632c95eab45b6cdedd3a594cc28c6d94ce8f7ef37bba
File size (compressed) :41'668 bytes
File size (de-compressed) :79'280 bytes
Format:linux/i386
Packed file: b1eca05ac8f0dca29557632c95eab45b6cdedd3a594cc28c6d94ce8f7ef37bba

Intelligence

File Origin
# of uploads :
1
# of downloads :
44
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/3e7f9eb2-11fc-45d8-8ce2-6b134cca4c5d/
Detection(s):
Sanesecurity.Malware.28880.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.29325.LC.Pl.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Linux.Mirai-81.UNOFFICIAL
Create hunting rule

Unix.Trojan.Mirai-8025795-0
Create hunting rule

Unix.Trojan.Mirai-9441505-0
Create hunting rule

Unix.Trojan.Mirai-9857931-0
Create hunting rule

Unix.Trojan.Mirai-9866113-0
Create hunting rule

Unix.Trojan.Mirai-10011027-0
Create hunting rule

Unix.Trojan.Mirai-10011918-0
Create hunting rule

Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
mirai
Link:
https://www.filescan.io/uploads/6970f4935db9ae47708c0c17/reports/b19876ce-6091-4c08-99c3-ee2b7c994e50/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
81
Number of processes launched:
1
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/31f8fa7aa1d924ecd3453607b4c6f48db5def0d683325163f1a04613fbd6ea33
Behaviour
Anti-Debugging
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Result
Gathering data
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/8c1e67b2-1b03-40c6-b578-ae75afb6c61d
Behavior Graph:
Download SVG
%3 guuid=1f1f90a1-1900-0000-c3a4-e0af340b0000 pid=2868 /usr/bin/sudo guuid=9eb004a6-1900-0000-c3a4-e0af400b0000 pid=2880 /tmp/sample.bin net guuid=1f1f90a1-1900-0000-c3a4-e0af340b0000 pid=2868->guuid=9eb004a6-1900-0000-c3a4-e0af400b0000 pid=2880 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=9eb004a6-1900-0000-c3a4-e0af400b0000 pid=2880->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=63931fc5-1900-0000-c3a4-e0af830b0000 pid=2947 /tmp/sample.bin zombie guuid=9eb004a6-1900-0000-c3a4-e0af400b0000 pid=2880->guuid=63931fc5-1900-0000-c3a4-e0af830b0000 pid=2947 clone guuid=071b27c5-1900-0000-c3a4-e0af840b0000 pid=2948 /tmp/sample.bin dns net send-data zombie guuid=9eb004a6-1900-0000-c3a4-e0af400b0000 pid=2880->guuid=071b27c5-1900-0000-c3a4-e0af840b0000 pid=2948 clone guuid=071b27c5-1900-0000-c3a4-e0af840b0000 pid=2948->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 42B 92baddd7-8a81-534e-9407-4c1f931774f6 ahahahahahajs.unproxy.st:9772 guuid=071b27c5-1900-0000-c3a4-e0af840b0000 pid=2948->92baddd7-8a81-534e-9407-4c1f931774f6 send: 40B
Gathering data
Result
Threat name:
Mirai, Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.mine
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1855047
Signature
Antivirus / Scanner detection for submitted sample
Found strings related to Crypto-Mining
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Mirai
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1855047 Sample: x86.elf Startdate: 21/01/2026 Architecture: LINUX Score: 84 23 Malicious sample detected (through community Yara rule) 2->23 25 Antivirus / Scanner detection for submitted sample 2->25 27 Multi AV Scanner detection for submitted file 2->27 29 2 other signatures 2->29 8 x86.elf 2->8         started        11 dash rm 2->11         started        13 dash rm 2->13         started        process3 signatures4 31 Found strings related to Crypto-Mining 8->31 15 x86.elf 8->15         started        17 x86.elf 8->17         started        process5 process6 19 x86.elf 15->19         started        process7 21 x86.elf 19->21         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/31f8fa7aa1d924ecd3453607b4c6f48db5def0d683325163f1a04613fbd6ea33
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/31f8fa7aa1d924ecd3453607b4c6f48db5def0d683325163f1a04613fbd6ea33/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-01-21 15:45:18 UTC
File Type:
ELF32 Little (Exe)
AV detection:
21 of 36 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gh4pu6vb3esozu2fgyd3jrxurw2554gwqmzfcy7rubdbh66w5izq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai credential_access discovery linux
Link:
https://tria.ge/reports/260121-s69n5acs9g/
Behaviour
Reads runtime system information
Changes its process name
Reads process memory
Enumerates running processes
Traces itself
Malware Config
C2 Extraction:
ahahahahahajs.unproxy.st
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/31f8fa7aa1d924ecd3453607b4c6f48db5def0d683325163f1a04613fbd6ea33

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:CoinMiner_Strings
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects mining pool protocol string in Executable
Reference:https://minergate.com/faq/what-pool-address
Rule name:CoinMiner_Strings_RID2DDE
Create hunting rule
Author:Florian Roth
Description:Detects mining pool protocol string in Executable
Reference:https://minergate.com/faq/what-pool-address
Rule name:ELF_Toriilike_persist
Create hunting rule
Author:4r4
Description:Detects Torii IoT Botnet (stealthier Mirai alternative)
Reference:Identified via researched data
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Linux_Trojan_Gafgyt_28a2fe0c
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_389ee3e9
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_5f7b67b8
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_88de437f
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_8aa7b5d3
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_ae9d0fa6
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_b14f4c5d
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 b1eca05ac8f0dca29557632c95eab45b6cdedd3a594cc28c6d94ce8f7ef37bba

Mirai

elf 31f8fa7aa1d924ecd3453607b4c6f48db5def0d683325163f1a04613fbd6ea33

(this sample)

  
Dropped by
SHA256 b1eca05ac8f0dca29557632c95eab45b6cdedd3a594cc28c6d94ce8f7ef37bba
  
URLhaus
https://urlhaus.abuse.ch/url/3683088/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 4d48adb347d78eb96d7e5857e074463e
  
URLhaus
https://urlhaus.abuse.ch/url/3761553/
  
URLhaus
https://urlhaus.abuse.ch/url/3761652/

Comments