MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a31a8d7d5f83a0c737be21f4211fc33867f9141643be35aac0a599c807c8f2ac. 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: 7


Intelligence 7 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a31a8d7d5f83a0c737be21f4211fc33867f9141643be35aac0a599c807c8f2ac
SHA3-384 hash: 23acfed6ee9d4e9302958e1738c56e815d6566d85b1c02b08867b66599a374627b8da57141bd3b7b5b64d5477cfa53f6
SHA1 hash: 720135c79c4f94eb10c9ffabfcfa8c4f3420a3dc
MD5 hash: f7aa098d08b15716fefa1e3974c0924e
humanhash: west-network-zebra-orange
File name:wife.x86
Download: download sample
Signature Mirai
Create hunting rule
File size:126'492 bytes
First seen:2026-05-19 23:35:48 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:mmWYyt1l+kxj3/TIaTthxo3jZ/mEM+AzLuAuX3JKzuQrBvl9+Or:9WYAS4/TZJhxo3j1mEyHL1vV
TLSH T1B7C32882BF43DAB7E55310F001B79B310B32FD3A5822DA96D768BCB199925D0E61637C
telfhash t1976139f76eea0cdcb7d14805c34e1ba26959ea3f155072b346b2681423f37c1a1bac39
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 c859725375e28257c471a3f46b2cf1083d7bdb3d3a3020f9dfa9fd6e8fc4dd40
File size (compressed) :52'580 bytes
File size (de-compressed) :126'492 bytes
Format:linux/i386
Packed file: c859725375e28257c471a3f46b2cf1083d7bdb3d3a3020f9dfa9fd6e8fc4dd40

Intelligence

File Origin
# of uploads :
1
# of downloads :
82
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Detection(s):
Unix.Trojan.Mirai-9853183-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Changes access rights for a file
Creating a file
Deletes a file
Connection attempt
Sends data to a server
Runs as daemon
Receives data from a server
Kills processes
Kills critical processes
Deletes a system binary file
Substitutes an application name
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
bash gcc lolbin masquerade
Link:
https://www.filescan.io/uploads/6a0cf3f7efbd399b39bcb98a/reports/af541a1c-8180-40e3-b5c3-74e40da95983/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-05-19T01:37:00Z UTC
Last seen:
2026-05-21T02:04:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/a31a8d7d5f83a0c737be21f4211fc33867f9141643be35aac0a599c807c8f2ac/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/833c06a0-30dd-4808-8a30-695aa33413a5
Behavior Graph:
Download SVG
%3 guuid=73a88001-1700-0000-3814-1a9c0e0f0000 pid=3854 /usr/bin/sudo guuid=83c23104-1700-0000-3814-1a9c150f0000 pid=3861 /tmp/sample.bin guuid=73a88001-1700-0000-3814-1a9c0e0f0000 pid=3854->guuid=83c23104-1700-0000-3814-1a9c150f0000 pid=3861 execve guuid=a9655204-1700-0000-3814-1a9c160f0000 pid=3862 /tmp/sample.bin guuid=83c23104-1700-0000-3814-1a9c150f0000 pid=3861->guuid=a9655204-1700-0000-3814-1a9c160f0000 pid=3862 clone guuid=87a25d04-1700-0000-3814-1a9c170f0000 pid=3863 /tmp/sample.bin delete-file dns net send-data write-file zombie guuid=a9655204-1700-0000-3814-1a9c160f0000 pid=3862->guuid=87a25d04-1700-0000-3814-1a9c170f0000 pid=3863 clone 4f6baed0-9587-596c-82b3-fd721afe4cc1 10.0.2.3:53 guuid=87a25d04-1700-0000-3814-1a9c170f0000 pid=3863->4f6baed0-9587-596c-82b3-fd721afe4cc1 send: 45B f4fcae0d-8693-5551-9db5-b014c559241c greatwivesforme.wifenet.lol:1337 guuid=87a25d04-1700-0000-3814-1a9c170f0000 pid=3863->f4fcae0d-8693-5551-9db5-b014c559241c send: 32B d93b5911-7e33-573b-b6da-b01954a6f3e6 9.9.9.9:12345 guuid=87a25d04-1700-0000-3814-1a9c170f0000 pid=3863->d93b5911-7e33-573b-b6da-b01954a6f3e6 send: 4193280B
Gathering data
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a31a8d7d5f83a0c737be21f4211fc33867f9141643be35aac0a599c807c8f2ac
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a31a8d7d5f83a0c737be21f4211fc33867f9141643be35aac0a599c807c8f2ac/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-05-19 21:25:12 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=umni27k7qoqmon56eh2cch6dhbt7sfawio7dlkwauwm4qb6i6kwa._file
Result
Malware family:
n/a
Score:
  6/10
Tags:
credential_access discovery linux
Link:
https://tria.ge/reports/260519-3lptbsdx3z/
Behaviour
Reads runtime system information
Changes its process name
Reads process memory
Enumerates running processes
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/a31a8d7d5f83a0c737be21f4211fc33867f9141643be35aac0a599c807c8f2ac

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:ELF_Toriilike_persist
Create hunting rule
Author:4r4
Description:Detects Torii IoT Botnet (stealthier Mirai alternative)
Reference:Identified via researched data
Rule name:Linux_Trojan_Gafgyt_5bf62ce4
Create hunting rule
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_389ee3e9
Create hunting rule
Author:Elastic Security
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:TH_Generic_MassHunt_Linux_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Generic Linux malware mass-hunt rule - 2026
Reference:https://cyfare.net/
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 c859725375e28257c471a3f46b2cf1083d7bdb3d3a3020f9dfa9fd6e8fc4dd40

Mirai

elf a31a8d7d5f83a0c737be21f4211fc33867f9141643be35aac0a599c807c8f2ac

(this sample)

  
Dropped by
SHA256 c859725375e28257c471a3f46b2cf1083d7bdb3d3a3020f9dfa9fd6e8fc4dd40
  
Dropped by
MD5 a91107a22199509e57e5daa076b8773b
  
URLhaus
https://urlhaus.abuse.ch/url/3850288/
  
Delivery method
Distributed via web download

Comments