MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 81aa3a1cec78008abbe0506a44c20fc80efe006f5c4d84fdec6c8ed9d84521d6. 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
| SHA256 hash: | 81aa3a1cec78008abbe0506a44c20fc80efe006f5c4d84fdec6c8ed9d84521d6 |
|---|---|
| SHA3-384 hash: | d190d465a0f9446da92b1222b9c1af6a3f3d1703001f18a2ed6319f453b06a681c081a966cbded9d37eb49607341131c |
| SHA1 hash: | 0f6984b214aef7b49866d3fe709cbe26957eda4d |
| MD5 hash: | c64014c3f8103bd49ddf1e0036f46ed4 |
| humanhash: | beer-cardinal-winter-rugby |
| File name: | px86 |
| Download: | download sample |
| Signature | Mirai |
| File size: | 20'880 bytes |
| First seen: | 2026-01-03 12:32:53 UTC |
| Last seen: | Never |
| File type: | elf |
| MIME type: | application/x-executable |
| ssdeep | 384:MsVFrtKI6ZBT9OIpbzDwEYrR8N66DG0Sx++I9B9AXtOJHqsYuO8+iyl029v1R/:NWBT9OiHwRR8A6DG0JBS8HqlKM/ |
| TLSH | T18692C16451884797DA1EF13FD24F4D1E36A0DB0A864AE7AFFA4003A8F99F055627CEC1 |
| 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 |
Intelligence
File Origin
# of uploads :
1
# of downloads :
46
Origin country :
DEVendor Threat Intelligence
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Connection attempt
Changes access rights for a written file
Sets a written file as executable
Changes the time when the file was created, accessed, or modified
Runs as daemon
Manages services
Creating a file
Opens a port
Sends data to a server
Launching a process
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Deleting of the original file
Creates or modifies files to set up autorun
Creates or modifies symbolic links in /init.d to set up autorun
Creates or modifies files in /init.d to set up autorun
Verdict:
Unknown
Threat level:
0/10
Confidence:
100%
Tags:
packed upx
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-01-03T08:49:00Z UTC
Last seen:
2026-01-04T01:46:00Z UTC
Hits:
~10
Status:
terminated
Behavior Graph:
Verdict:
Suspicious
Result
Threat name:
Mirai
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Signature
Drops files in suspicious directories
Executes the "crontab" command typically for achieving persistence
Malicious sample detected (through community Yara rule)
Modifies the '.bashrc' or '.bash_profile' file typically for persisting actions
Multi AV Scanner detection for submitted file
Protects files from modification
Sample deletes itself
Sample is packed with UPX
Sample tries to persist itself using /etc/profile
Sample tries to persist itself using cron
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Yara detected Mirai
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
ELF
Threat name:
Linux.Worm.Mirai
Status:
Malicious
First seen:
2026-01-03 12:33:18 UTC
File Type:
ELF32 Little (Exe)
AV detection:
19 of 38 (50.00%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
7/10
Tags:
defense_evasion discovery execution linux persistence privilege_escalation upx
Behaviour
Reads runtime system information
Changes its process name
Modifies Bash startup script
Creates/modifies Cron job
Creates/modifies environment variables
Enumerates running processes
Modifies init.d
Modifies systemd
File and Directory Permissions Modification
Deletes itself
Modifies Watchdog functionality
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Please note that we are no longer able to provide a coverage score for Virus Total.
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: | upx_packed_elf_v1 |
|---|---|
| Author: | RandomMalware |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
Comments
Login required
You need to login to in order to write a comment. Login with your abuse.ch account.